Academic literature on the topic 'Agonistic behaviour'

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Journal articles on the topic "Agonistic behaviour"

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Waas, Joseph R. "Intraspecific Variation in Social Repertoires: Evidence From Cave- and Burrow-Dwelling Little Blue Penguins." Behaviour 115, no. 1-2 (1990): 63–99. http://dx.doi.org/10.1163/156853990x00293.

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Abstract1. Breeding habitat variation in little blue penguin agonistic behaviour is correlated with environmental heterogeneity. 2. Cave-dwellers nested in tight colonial aggregations and had no physical barriers between nest sites. Burrow-dwellers nested as solitary pairs or in loose aggregations and were physically isolated from one another. 3. Cave-dwellers had significantly higher agonistic interaction rates than burrow-dwellers. 4. Cave-dwellers used a total of 22 distinct agonistic behaviours with 54 variations. Burrow-dwellers used a total of 13 agonistic behaviours with 29 variations. Variations on base behaviour were primarily the result of differences in vocal accompaniment. 5. Both cave- and burrow-dwellers used growl, low bray, medium bray, full bray, aggressive bark and aggressive yell vocalizations during agonistic behaviour. Only burrow-dwellers used a hiss vocalization. 6. Despite variation between cave- and burrow-dweller repertoires, many agonistic behaviours were very similar in form (posture, duration, movement, presence or absence of vocal components) and/or context (distance from the opponent when performing the behaviour, proportion of interactions involving the behaviour). 7. Repertoires from both habitats could be divided into three discrete categories: defensive behaviour, offensive behaviour, and overt aggression. For each habitat, the defensive behaviour category could be divided into stationary and distance increasing behaviour; the offensive behaviour category could be divided into stationary, distance reducing, and contact behaviour; and the overt aggression category could be divided into distance reducing and contact behaviour. 8. Cave-dwellers used twice as many defensive behaviours, twice as many offensive behaviours, and the same number of overtly aggressive behaviours as burrow-dwellers. 9. In both habitats, defensive behaviour was used most when the opponent was nearby ( < 1 m to 1-2 m), whereas stationary offensive behaviour was performed most when opponents were further away (2-3 m to > 3 m). Distance reducing behaviour (both offensive and overt) was performed most at middle interaction distances (1-2 m to 2-3 m) in both habitats. 10. Males were involved in a higher proportion of agonistic interactions than females in both habitats. 11. Burrow-dwellers used the overt behaviour Attack significantly more than cave-dwellers and also used the most dangerous fighting method more commonly than cave-dwellers. Burrow-dwellers also bit and fought significantly longer than cave-dwellers. 12. An egg transfer experiment (i.e. between cave and burrow colonies) indicated that chicks may not be genetically bound to the use of a habitat-specific repertoire of agonistic behaviours. 13. Four possible mechanisms are suggested for the origin of variation between habitats: (1) genetic influences; (2) phenotypic modulation; (3) experience; and (4) circumstantial influences. 14. Plastic agonistic behaviour may allow immediate and potentially adaptive phenotypic change in response to environmental heterogeneity. The large cave repertoire may reduce the chances of any one interaction ending with overt aggression. The smaller burrow-dweller repertoire may be sufficient to defend the physically enclosed burrow nest sites.
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Brillet, Ch. "Behavioural cues in sex recognition by two species of nocturnal lizards: Eublepharis macularius and Paroedura pictus." Amphibia-Reptilia 14, no. 1 (1993): 71–82. http://dx.doi.org/10.1163/156853893x00200.

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AbstractAlthough several senses are used in agonistic and sexual behaviours by Eublepharis macularius and Paroedura pictus, different cues do not have the same relative value for males of the two species. Behavioural patterns observed in the presence of anesthetized conspecifics of both sexes differed considerably. The agonistic and sexual behaviours of E. macularius underwent progressive changes in reaction time and the frequency and duration of other behaviours. Aggressive behaviour eventually almost completely disappeared in P. pictus and was replaced by sexual behaviour, whatever the sex of the stimulus-animal ; the lizards then appeared to be incapable of distinguishing males from females. Agonistic behaviour of both species was sensitive to the immobility of the conspecific, although to different degrees. These data concur with observations carried out under more natural conditions; sex recognition criteria differ between the species. E. macularius relies primarily on chemical signals for sex recognition and sex-related behaviours. In P. pictus, which depends primarily on visual signals, conspecific posture and behaviour are the main factors responsible for both sexual and agonistic reactions.
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Reynierse, James H. "Agonistic Behaviour in Mongolian Gerbils." Zeitschrift für Tierpsychologie 29, no. 2 (2010): 175–79. http://dx.doi.org/10.1111/j.1439-0310.1971.tb01731.x.

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Shelverton, P. A., and C. G. Carter. "The Effect of Ration on Behaviour, Food Consumption and Growth in Juvenile Greenback Flounder (Rhombosolea Tapirina: Teleostei)." Journal of the Marine Biological Association of the United Kingdom 78, no. 4 (1998): 1307–20. http://dx.doi.org/10.1017/s0025315400044519.

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This study examined the relationships between food ration, intra- and interindividual variation in food consumption, observed behaviours and the growth of individual juvenile greenback flounder (Rhombosolea tapirina: Teleostei) held singly and in groups. Agonistic, feeding and neutral behavioural units were identified and described using video records and focal sampling. Agonistic behaviour, including nipping and pushing, were infrequent and accounted for <5% of behavioural units. The influence of food ration upon agonistic behaviour was investigated using three groups of six flounder offered either a low, medium or high food ration. The total number of agonistic behaviours recorded in each group did not differ significantly (P>0.05) suggesting food ration had little influence upon the total number of agonistic behaviours performed. Single flounder showed less intra- and less interindividual variation in day-to-day food consumption than in groups of six. Variation in food consumption increased with increasing food ration in single and in groups of flounder. Significant positive correlations between food consumption, intraindividual variation in food consumption and specific growth rate provided indirect evidence for the presence of feeding hierarchies. The small contribution made by agonistic behaviour to the total number of behaviours recorded for each group suggests exploitation competition, as opposed to interference competition, was the dominant competitive mechanism employed by juvenile greenback flounder.
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Khatiwada, Sunil, and Mukesh K. Chalise. "Agnostic Interaction between Rhesus Monkey and Human at Swayambhu and Pashupati Area, Nepal." Nepalese Journal of Zoology 3, no. 1 (2015): 82–88. http://dx.doi.org/10.3126/njz.v3i1.30870.

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The study was designed using Scan Sampling and Ad libitum recording to investigate the interaction between Rhesus monkey and Humans in Pashupatinath Temple Area and Swayambhunath Stupa Area for a total of 250 hours (8 hours per day; from 9:00 a.m.-5:00 p.m.). Interactions at Swayambhu were occurring high in midday (1p.m. to 2 p.m.) and at Pashupati interactions were occurring high in morning (10 a.m. to 11 a.m.) and evening (4 p.m. to 5 p.m.). Monkey interacted more for the context of food while humans interacted for recreation purpose. Biting was observed only in Swayambhu area. Agonistic behaviour by human was 44% at Pashupati and 34.7% at Swayambhu and Agonistic monkey behaviour was 23.1% at Swayambhu while 22.4% at Pashupati. Living in commensalism with human agonistic behaviour of monkey was high in response to human behaviour rather than through its initiation and also monkeys’ have devised passive behavior strategy during presence of food. Threat shown by monkey at both places tends to increase in absence of food. Female monkey individuals residing in Swayambhu initiate more encounters (58%) than of Pashupati (28%) area while the overall encounter was accounted for male individual. Female monkey individuals were likely to start an encounter at Swayambhu preferring agonistic behaviour during encounter than male individuals while at Pashupati male monkey individual were likely to prefer agonistic behaviour.
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Solomon-Lane, Tessa K., Madelyne C. Willis, Devaleena S. Pradhan, and Matthew S. Grober. "Female, but not male, agonistic behaviour is associated with male reproductive success in stable bluebanded goby (Lythrypnus dalli) hierarchies." Behaviour 151, no. 10 (2014): 1367–87. http://dx.doi.org/10.1163/1568539x-00003188.

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In many social species, there are important connections between social behaviour and reproduction that provide critical insights into the evolution of sociality. In this study, we describe associations between agonistic behaviour and male reproductive success in stable social groups of bluebanded gobies (Lythrypnus dalli). This highly social, sex-changing species forms linear hierarchies of a dominant male and multiple subordinate females. Males reproduce with each female in the harem and care for the eggs. Since aggression tends to be associated with reduced reproduction in social hierarchies, we hypothesized that males in groups with high rates of aggression would fertilise fewer eggs. We also hypothesized that a male’s agonistic behaviour would be associated with his reproductive success. Dominants often exert substantial control over their harem, including control over subordinate reproduction. To address these hypotheses, we quantified egg laying/fertilisation over 13 days and observed agonistic behaviour. We show that there was a significant, negative association between male reproductive success and the total rate agonistic interactions by a group. While no male behaviours were associated with the quantity of eggs fertilised, female agonistic behaviour may be central to male reproductive success. We identified a set of models approximating male reproductive success that included three female behaviours: aggression by the highest-ranking female and approaches by the lowest-ranking female were negatively associated with the quantity of eggs fertilised by males in their groups, but the efficiency with which the middle-ranking female displaced others was positively associated with this measure. These data provide a first step in elucidating the behavioural mechanisms that are associated with L. dalli reproductive success.
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Pereira, Michael E., and Peter M. Kappeler. "Divergent Systems of Agonistic Behaviour in Lemurid Primates." Behaviour 134, no. 3-4 (1997): 225–74. http://dx.doi.org/10.1163/156853997x00467.

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AbstractTwo semifree-ranging groups of ringtailed lemurs (Lemur catta) and two co-ranging groups of redfronted lemurs (Eulemur fulvus rufus) were studied across a two-year period to characterise and contrast the adult agonistic behaviour these primates exhibit within groups. Temporal analyses of behavioural data distinguished agonistic from non-agonistic behaviour and aggressive from submissive behaviour. The ringtailed lemurs employed a diverse repertoire of behavioural elements to communicate agonistic intent. More than 50% of these elements were signals and nearly 50% of signals were submissive. The agonistic repertoire of the redfronted lemurs, by contrast, was relatively unelaborated: less than 40% of agonistic behaviour in this species comprised signals and less than 20% of signals were submissive. These structural differences underlay marked species differences in agonistic interaction and relationship. All pairs of ringtailed lemurs maintained dominance relations resembling those seen in many anthropoid primates: subordinates consistently signalled submissively to dominant partners, often in the absence of aggression. Dominance relations among members of each sex were seasonally unstable and not always transitive (hierarchical) during periods of stability, however. Redfronted lemurs, by contrast, did not maintain dominance relations, failing to respond agonistically to most aggression received (52% of interactions) and responding with aggression on many other occasions (12%). Even applying relaxed criteria, few adult redfronted dyads (14%) showed consistent asymmetries in agonistic relations and several never exhibited any asymmetry. Lacking dominance, E. f rufus relied heavily on alternate behavioural mechanisms to moderate social conflict as frequent and intense as that seen in study groups of ringtailed lemurs. These included a great inclination not to respond agonistically to aggression, a distinctive behavioural proposal to limit or terminate dyadic conflict (Look away), post-conflict reconciliation, and relatively frequent third-party aggression. The existence of such divergent systems of agonistic behaviour in partially sympatric, closely related and generally similar prosimian primates offers important opportunities for comparative study of the ecology, development, and evolution of mammalian social systems. Future research may reveal ecophysiological factors that promote the use of dominance behaviour among like-sexed ringtailed lemurs and show how the relative absence of dominance relates to other major elements of redfronted lemur biology, including 'special relationships' of variable duration between adult males and females.
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Dunham, David W., and Radu Cornel Guiasu. "Agonistic Interactions in Male Form Ii Cambarus Robustus Girard, 1852 Crayfish (Decapoda, Cambaridae) and a Comparison Between Male Form i aNd Form Ii Intra-Form Contests." Crustaceana 70, no. 6 (1997): 720–36. http://dx.doi.org/10.1163/156854097x00159.

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AbstractAn analysis of intra-form agonistic contests between size-matched male Form II (non-breeding form) Cambarus robustus Girard, 1852 crayfish revealed that the winners and losers of these contests differed in the numbers and types of initiation behaviours used. The (eventual) winners, which initiated significantly more fights overall, used mostly the aggressive Claws Raised and Lunge initiation behaviours, whereas the (eventual) losers, which also initiated most of the very first fights of the overall agonistic contests, used mostly the tentative Ambivalent Contact behaviour. Thus, initiation behaviours can be used as good predictors of status for males of this species. The Lunge behaviour is a strong indicator of the eventual dominant status of male crayfish, during agonistic contests. There was a significant, negative correlation between the relative frequency of the Lunge initiation behaviours used by the winners and the total time spent fighting. A comparison between the male Form II and Form I (breeding form) intra-form contests, in this species, and an analysis of the differences and similarities between these two types of contests, indicated that male form is an important variable in the agonistic interactions of cambarid crayfish.
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Oyama, Taiga, Yuto Momohara, Hirona Yano, Michiya Kamio, Naoyuki Fujiyama, and Toshiki Nagayama. "Sex recognition and agonistic strategies of male and female crayfish." Behaviour 157, no. 6 (2020): 575–96. http://dx.doi.org/10.1163/1568539x-bja10014.

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Abstract Intraspecific communication is essential for agonistic and mating behaviours. Agonistic strategy of males must change according to the sex of opponents and that of females is also dependent on their physiological state as to whether they are brooding or not. We have analysed here the agonistic encounters between pairs of male and female crayfish in various combinations to reveal the interaction between agonistic and mating behaviours. After male crayfish became dominant, they aggressively chased subordinate males with attacks, while they did not attack female opponents. Furthermore, the agonistic behaviour of males changed depending on whether females were ovigerous or not. On the other hand, two females showed intense combats despite being ovigerous or not. Crayfish discriminated the sex of opponents via chemical signals in the urine. However, the dominant and subordinate social order of crayfish had no effect on selecting mating partners.
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Ferron, Jean. "How do population density and food supply influence social behaviour in the snowshoe hare (Lepus americanus)?" Canadian Journal of Zoology 71, no. 6 (1993): 1084–89. http://dx.doi.org/10.1139/z93-147.

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The influence of population density and food on the social behaviour of the snowshoe hare (Lepus americanus) was studied in an outdoor enclosure. The year was divided into two periods: the nonbreeding season (October to March) and the breeding season (April to August). During each period, data on social interactions were recorded for groups of 4, 6, 8, and 10 animals, with three different sets of animals for each group size. Agonistic behaviour characterized social encounters between hares year-round. During the nonbreeding season, there was a significant correlation between agonistic behaviour and group size for females only. During the breeding season, the rate of interaction was lower and agonistic behaviour was significantly and negatively correlated with group size for males only. Two-way ANOVA of total agonistic behaviour revealed that group size and sex interacted significantly only during the nonbreeding season. The different categories of agonistic behaviour (aggression, threat, and taking the place of another animal) were also analysed separately. The distribution of aggression within each of the experimental groups indicated that the two top-ranking animals were generally males and that they initiated most of the aggressive encounters. Another experiment with restricted food availability was conducted to study the impact of limited resources on agonistic behaviour. Hares were significantly more aggressive when food was restricted than when food was available ad libitum. It thus appears that food availability has a stronger influence on social behaviour than does hare density.
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Dissertations / Theses on the topic "Agonistic behaviour"

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Bradshaw, Richard H. "Agonistic behaviour and individual recognition in groups of laying hens." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276581.

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Hobson, Helen. "Serotonergic modulation of social and agonistic behaviour in male mice." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333815.

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Schoening, Barbara. "Evaluation and prediction of agonistic behaviour in the domestic dog." Thesis, University of Bristol, 2006. http://hdl.handle.net/1983/23316504-ed58-4004-8a77-0242644c2c4d.

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To date, the strategy in many countries for prevention of danger originating from dogs, has been a) to ban certain breeds which are supposed to be more aggressive than others, and b) to apply a variety of temperament tests to dogs of all breeds, with the aim of detecting those with elevated aggressiveness. There is some scientific literature in this field, but empirical hypothesis testing is still scarce. The first part of this thesis examines whether "dangerous dogs" can be reliably distinguished from "normal" dogs. In a formal test of aggressive and unacceptable social behaviour, designed to predict aggressive behaviour later in the dog's life, six distinct sets of releasers for aggression were identified (Groups A-F), and a further three in a supplementary test conducted in-home (Groups G-I). Breed, age, sex, and previous training were found to influence the quality and quantity of the behaviour shown in the individual subtests. Responses to Group D (dogs) were associated with previous history of biting dogs; responses to Groups B (threats from humans) and E (play) were associated with previous history of biting people. Both might therefore be predictive of future risk of biting. In addition to aggressive responses, an ethogram was used to characterise the dogs' behaviour; the majority appeared to display aggressive behaviour motivated by a stressful state and/or uncertainty. In the second part, the behavioural development of four litters of Rhodesian Ridgebacks was recorded in weeks four to eight of life, focussing on behaviour shown in dyadic interactions with siblings. When the same dogs were tested as adults, puppy behaviour proved not to be a predictor for any behaviour patterns shown in conflict situations, Biases in the test, and the implications of the results for keeping and breeding dogs, and for prevention of danger arising from dogs, are discussed.
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Wilson, Jeremy David. "The functions of agonistic interaction, social dominance and display in a winter population of the great tit, Parus major L." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/14677.

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Black, J. M. "The pair-bond, agonistic behaviour and parent-offspring relationships in barnacle geese." Thesis, Cardiff University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378102.

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Sneddon, Lynne Ure. "The physiological effects of agonistic behaviour in the shore crab, Carcinus maenas (L.)." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264141.

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Tan, Shenton S. L. "Agonistic behaviour in finishing pigs (Sus scrofa) following mixing : its effect on productivity." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28408.

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The effect of mixing unfamiliar finishing pigs (Sus scrofa) on agonistic behaviour and productivity over a 3 week period was investigated. Nine groups of six pigs were allocated to one of three treatments and eight groups of six pigs to the fourth treatment. In the first treatment (unmixed) littermate groups were moved into a new pen and in the second treatment (3:3 mixed) 3 pigs from one littermate group were mixed with 3 pigs from a second littermate group. The third treatment (Stresnil-treated) was similar to the second treatment but pigs were injected with the tranquilizer Stresnil (azaperone) prior to mixing. In the fourth treatment (5:1 mixed) groups of five pigs were introduced into a pen already occupied by either a single relatively light weight pig or a relatively heavy weight pig. Intense fighting was displayed by the regrouped pigs immediately following mixing, while unmixed and Stresnil-treated pigs generally went to sleep. During feeding periods, initiated aggression was the most common agonistic behaviour exceeding aggressive responses and submissive responses by a factor of up to 14. In mixed groups initiated aggression was significantly higher than in unmixed groups. Administration of Stresnil appeared to disrupt the animals' behavioural repetoire by delaying aggression, retarding social hierarchy establishment and depressing productivity. Prior occupancy of pen space also appeared to influence aggressive behaviour. Over the entire three week sample period, average daily weight gains (ADG) of all three mixed treatments were significantly less than unmixed groups. The differences were significant during the first week but not in the second or third weeks. The mixed groups were also poorer converters of feed during the first week and over the three week period. Stresnil-treated pigs, on average, exhibited the poorest productivity of the mixed treatments. The economic costs of raising mixed groups from an initial weight of 76 kg to a standard final weight of 95 kg as a result of their reduced weight gain and feed efficiency, was substantial: $2.92 per pig for Stresnil-treated groups; $1.43 per pig for 3:3 mixed groups; and $1.13 per pig for 5:1 mixed groups. Assuming that growth rates remain the same, extrapolation of the data to a market weight of 102 kg resulted in overall costs of $3.50 per pig for Stresnil-treated groups, $1.94 per pig for 3:3 mixed groups and $1.54 per pig for 5:1 mixed groups.<br>Land and Food Systems, Faculty of<br>Graduate
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Ramos, Daniela Maria Justino Alves. "Intraspecific agonistic behaviour during settlement events of a marine invertebrate with a biphasic life cycle." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/16834.

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Mestrado em Ecologia Aplicada<br>Cannibalism is a well-known behaviour among several invertebrate marine species and may play a relevant role in population dynamics and distribution. In this study we tested if this behaviour occurs at key moments of the complex life cycle of a decapod, namely at settlement and early post-metamorphosis. We collected wild megalopae of the brachyuran crab Carcinus maenas at Ria de Aveiro (Portugal) and at laboratory conditions tested the survival of megalopae stocked at different densities and under contrasting conditions of habitat and food availability. We also tested if cannibalism could be observed between megalopae and first, second and third instar juvenile crabs. Our results showed that megalopae only display cannibalism towards conspecifics at the same life stage under high densities scenarios. The occurrence of cannibalism towards megalopae was immediate and more significant with juveniles on the third crab stage (C3) when compared with the first and second juvenile crab stage (C1 and C2). This study allowed to perceived that during high settlement peaks, the performance and survival of megalopae is not affected by possible cannibalistic interactions among other megalopae. However, the structure and number of the adult population may not correspond to the potential settlement of the larvae when conspecifics of previous events, such as juvenile C3 are present in the same place, due to occurrence of cannibalism.<br>O canibalismo é um comportamento intraespecífico observado entre muitas espécies de invertebrados marinhos, introduzindo alterações na dinâmica e distribuição das populações. Neste estudo pretendemos testar se este comportamento pode ser observado durante o assentamento e pós-assentamento de um decápode com um ciclo de vida complexo. Megalopas selvagens do caranguejo braquiúro Carcinus maenas foram recolhidas na Ria de Aveiro (Portugal) e em condições de laboratório, testou-se a sua sobrevivência quando expostas a diferentes densidades, complexidade de habitat e disponibilidade de alimento. Foi também testada a ocorrência de canibalismo dos três primeiros estágios de juvenis para com conspecíficos no estado larvar de megalopa. Os resultados experimentais revelaram que o canibalismo não é comum entre megalopas, sendo apenas influenciado quando estão presentes em grandes densidades. Os juvenis no terceiro estágio de caranguejo (C3) apresentaram comportamentos canibalísticos imediatos e mais significativos quando comparados com os juvenis do primeiro e segundo estágio de caranguejo (C1 e C2). Os resultados apresentados permitiram deste modo perceber que durante elevados picos de assentamento, o desempenho e sobrevivência das megalopas não é afetado por possíveis comportamentos canibalísticos entre estas. No entanto, a estrutura das populações adultas pode não corresponder ao potencial de assentamento das larvas quando coespecíficos de eventos anteriores, como por exemplo, juvenis C3, se encontram presentes no mesmo local, devido à ocorrência de canibalismo.
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Backström, Tobias. "Roles of Arginine-Vasotocin and Corticotropin-Releasing Hormone in Stress Responses and Agonistic Behaviour of Rainbow Trout." Doctoral thesis, Uppsala universitet, Jämförande fysiologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8485.

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The neuropeptides arginine-vasotocin (AVT) and corticotropin-releasing hormone (CRH) are involved in the hypothalamic-pituitary-interrenal (HPI) axis. During stress, the HPI axis is activated and cortisol is released into the blood. In addition to their role in the HPI axis, AVT and CRH also have behavioural effects. The roles of AVT and CRH in stress responses and agonistic behaviour were studied in this thesis, using two different models. In the first model, two strains of rainbow trout (Onchorhynchus mykiss) divergent in stress-induced release of cortisol were investigated. This was done by observing behaviour and stress responses under different conditions. These strains were found to have divergent stress coping strategies based on the observed behaviour and levels of plasma cortisol. This divergence in behaviour could be associated with the CRH system, since the mRNA levels of CRH differed between the strains during stress. However, no differences between strains were observed in AVT or its receptor expressions. In the second model, non-selected rainbow trout were paired and the effect of intracerebroventricular (icv) injections of an active substance (AVT, CRH or the CRH related peptide Urotensin-I (UI)) on fights for dominance was investigated. One fish of the pair received the active substance icv and the other received saline icv. Fish receiving AVT became subordinate in accordance with the suggestion that AVT attenuates aggression in territorial vertebrates. Fish receiving CRH became subordinate whereas UI showed no effect on fights for dominance. Further, both CRH and UI induced an anxiety-related behaviour similar to non-ambulatory motor activity in rats. In addition, CRH appeared to affect the dopaminergic and serotonergic systems. In this thesis, it is suggested that CRH is involved in the behavioural modulation of the stress coping strategies in teleost fish. Further, AVT and CRH seem to act inhibitory on aggressive behaviour.
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Guiasu, Radu Cornel. "Agonistic behaviour patterns and the distribution and status of the Cambarus (Decapoda, Cambaridae) crayfish of Ontario, Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0005/NQ27940.pdf.

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Books on the topic "Agonistic behaviour"

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Olivier, B., J. Mos, and P. F. Brain, eds. Ethopharmacology of Agonistic Behaviour in Animals and Humans. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3359-0.

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Guiasu, Radu Cornel. Agonistic behaviour patterns and the distribution and status of the Cambarus (Decapoda, Cambaridae) crayfish of Ontario, Canada. National Library of Canada = Bibliothèque nationale du Canada, 1997.

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Desjardins, Dawn C. The effects of environmental conditions and brain micro structure on agonistic behaviour displayed in rats subsequent to seizure induction by lithium and pilocarpine. Laurentian University, Department of Biology, 1998.

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Williams, Jean Balch. Agonistic alliances of nonhuman primates: A bibliography, 1975-1985. Primate Information Center, Regional Primate Research Center, University of Washington, 1985.

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1954-, Turner Angela K., ed. Animal conflict. Chapman and Hall, 1987.

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1959-, Rowe Locke, ed. Sexual conflict. Princeton University Press, 2005.

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St-Pierre, Linda S. Experimental production of agonistic behavior in groups of male epileptic rats by different magnetic field patterns presented during local night. Laurentian University, Behavioural Neuroscience Program, 1998.

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Volpe, Rebecca L., 1983- author and Sigma Theta Tau International, eds. Toxic nursing: Managing bullying, bad attitudes, and total turmoil. Sigma Theta Tau International, 2013.

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Rusk, Ilene Naomi. The effects of selective dopamine D [inferior] 1 and D [inferior] 2 agonists and antagonists on feeding and associated behaviour. University of Birmingham, 1989.

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Baldi, Elisabetta, and Corrado Bucherelli. Neuroscience. Firenze University Press, 2017. http://dx.doi.org/10.36253/978-88-6453-638-5.

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This bibliographic material is patrimony of our Laboratory of the Behavior Physiology. This research unit originated in 1972 by will of Aldo Giachetti (until 1990) and with the beginning of the activity of Corrado Bucherelli. In the early 1980s, with Carlo Ambrogi Lorenzini (until 2004), the cataloging became more capillary and systematic, to continue to this day. All the researchers who worked in our laboratory contributed to this collection (Giovanna Tassoni 1986-2000, Benedetto Sacchetti 1996-2002 and Elisabetta Baldi from 1991). The study of learning, memory and behavior requires to follow a broad spectrum of neuroscience topics, ranging from neuronal biochemistry to neuropsychology. The Authors’ idea of publishing this collection comes from believing that a such website, though not exhaustive, might be a useful and targeted tool for the selection of bibliographic material in the field of behavioral neuroscience. The bibliographic references present at the publication (29500), accompanied by a brief comment highlighting the contents, are organized in relation to the topics (represented by the 99 themes) constituting the publication itself. The intersection of several references will point out the topics that represent them simultaneously. Concerning neurotransmitters and neuromodulators, references to agonists, antagonists or molecules interfering with the activity of these synapses have been inserted in the pages of the implicated neurotransmitter (e.g. acetylcholine). The pages including topics that could have been dealt with separately (e.g. active and passive avoidance) are introduced by a short explanatory note. The comment of each publication highlights the animal species used. Each comment is intended to indicate the content rather than the experimental results of paper. This choice comes from wanting to provide the reader with a more objective and less speculative comment.
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Book chapters on the topic "Agonistic behaviour"

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Olivier, Berend, Jan Mos, Jan van der Heyden, et al. "Serotonergic Modulation of Agonistic Behaviour." In Topics in the Neurosciences. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3359-0_11.

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Sutrisna, Elaine, Min Teah, and Ian Phau. "Agonistic Behaviour in Marketing: An Extended Abstract." In Marketing at the Confluence between Entertainment and Analytics. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47331-4_108.

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Poshivalov, Vladimir P. "Ethopharmacological and Neuropharmacological Analyses of Agonistic Behaviour." In Topics in the Neurosciences. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3359-0_8.

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Olivier, B., J. Mos, and R. Oorschot. "Etho-Experimental Studies of Similarities and Differences in Male and Female Agonistic Behaviour." In Ethoexperimental Approaches to the Study of Behavior. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2403-1_34.

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Yoshimura, H. "Studies Contrasting Drug Effects on Reproduction Induced Agonistic Behaviour in Male and Female Mice." In Topics in the Neurosciences. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3359-0_6.

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Young, Christopher. "Agonistic Behavior." In Encyclopedia of Animal Cognition and Behavior. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-47829-6_320-1.

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Zumpe, Doris, and Richard P. Michael. "Agonistic Behavior." In Notes on the Elements of Behavioral Science. Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1239-4_12.

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Scherrmann, Jean-Michel, Kim Wolff, Christine A. Franco, et al. "Agonistic Behavior." In Encyclopedia of Psychopharmacology. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-68706-1_1018.

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Olivier, Berend, and Jan Mos. "Serotonergic Aspects of Agonistic Behavior." In New Directions in Affective Disorders. Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3524-8_9.

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Schneider, Henning. "Measuring Agonistic Behavior in Zebrafish." In Neuromethods. Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60761-953-6_10.

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Conference papers on the topic "Agonistic behaviour"

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Rowe, Richard J. "The social dimension: Agonistic behaviour in larvae." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.93377.

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Makris, P. E., A. Papadopoulos, and D. A. Tsakiris. "LIPOXYGENASE PRODUCTS CHANGES IN ‘IN VITRO’ AND ‘IN VIVO’ ASPIRINISED PLATELETS UNDER THE INFLUENCE OF PAF AND EPINEPHRINE." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644829.

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We aimed to investigate the changes of lipoxygenase products in platelets and the simultaneous behaviour of ‘in vivo’ or ‘in vitro’ aspirinised platelets, stimulated by two agonists, PAF and epinephrine (EPI). 12 healthy were included. 6 received 20mg of aspirin (ASA) per os for 7 days (group A), and in 6 (group B) platelets were aspirinised ‘in vitro’ (5 or lOmin incubation at 37°C with ASA 1M). In group A blood was drawn once at the beginning and once at the end of the trial, while in group B just ome. First, platelet aggregation was studied using two agonists simultaneously (0.6 ¼M EPI and 20 nM PAF). We incubated then all platelet samples with 0.5 M of the substance BW755C (kind offer of Dr Moncada) far 3 min at 37°C. Second we measured PL0 products according to Takayama et al (1980), in platelets with or without ASA, and in platelets with ASA and after treatment with BW755C, always after addition of both agonists. Our results showed: a) Irreversible aggregation was slightly enhanced by the simultaneous addition of PAF and EPI in both groups and in non-aspirinised platelets. After ASA treatment, each agonist alone did not induce irreversible aggregation, whereas their combination overcame this inhibition, a fact not noticed under BW755C (a known PLO inhibitor). b) PLO products were measured in nmol TBRS/10 platelets:Our results agree with Cerletti et al (1986) and confirm that the two agonists combined are capable of overcoming the inhibition caused by ASA, possibly by activating the PLO pathway (Cerletti et al, 1986). Respectively the quantitative determination of PLO products (about which we did not notice any other report insofar) confirm the above assumption, since inhibition by BW755C coincides with the steep fall of PLOlevels, which for group A is statisticallysignificant (p≺0.01, paired t-test) and for group B entirely significant (p ≺0.001).
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Schuoler, Claudio, Claudia Steurer-Stey, Elke Ullmer, et al. "Prescription behaviour of short-acting ß2-agonists in Switzerland." In ERS International Congress 2020 abstracts. European Respiratory Society, 2020. http://dx.doi.org/10.1183/13993003.congress-2020.2640.

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Berselli, Giovanni, Rocco Vertechy, Mitja Babič, and Vincenzo Parenti Castelli. "Implementation of a Variable Stiffness Actuator Based on Dielectric Elastomers: A Feasibility Study." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8144.

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Dielectric Elastomers (DE) seem to be a promising technology for the implementation of light and compact Variable Stiffness Actuators (VSAs), thanks to their large power densities, low costs and shock-insensitivity. Nonetheless, the development of DE-based VSA is not trivial owing to the relevant dissipative phenomena that affect the DE when subjected to rapidly changing deformations. In this context, the purpose of the present paper is to investigate the practical feasibility of DE-based VSA. As a case study, two conically-shaped actuators, in agonistic-antagonistic configuration, are modeled accounting for the visco-hyperelastic nature of the DE films. The model is then linearized and employed for the design of a stiffness controller. The control algorithm requires the knowledge of the actuator configuration (via a position sensor) and of the force exchanged with the environment (via a force sensor). An optimum full-state observer is then implemented, which enables both accurate estimation of the DE time-dependent behavior and adequate suppression of sensor measurement noise. At last, experimental results are provided together with the description of an effective electronic driver that allows an independent activation of the agonistic-antagonistic DE membranes.
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Spangenberg, P., W. Lobche, and U. Till. "ALTERATIONS OP THE ACTIN STATUS OP PLATELETS APPECTS THE FUNCTIONAL BEHAVIOUR OP THE CELL." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644874.

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Many platelet responses to agonists involve contractile proteins. Particularly, the status of the most abundant protein actin is changed in motile and contractile events. We have studied the effects of SH-reagents on platelets and found significant effects of a SH-oxidizing agent on the actin organization which are neutralized following the addition of a disulfide-reducing compound. SH-oxidation of intact platelets was achieved by incubation with diamide (azodicarboxylic acid-bis-dimethylamide). The P-actin of those cells is increased and the filaments became centralized indicating a disturbance of the membrane-cytoskeleton interaction. Treatment of SH-oxidized platelets with 2-mercaptopropionylglycine which reduces disulfides resulted in a return of P-actin levels to those seen in untreated cells The actin organization of platelets is discussed with regard to the altered functional behaviour of diamide-treated cells.
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Kutina, Anna, and Elizaveta Petrova. "EFFECT OF VASOPRESSIN AGONISTS ON DRINKING BEHAVIOR, SALT APPETITE AND RENAL SODIUM EXCRETION IN RATS." In XVII INTERNATIONAL INTERDISCIPLINARY CONGRESS NEUROSCIENCE FOR MEDICINE AND PSYCHOLOGY. LCC MAKS Press, 2021. http://dx.doi.org/10.29003/m2197.sudak.ns2021-17/225-226.

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TAPPARELLI, C., P. GFELLER, S. SANJAR, and J. MORLEY. "COMPARISON BETWEEN IN VITRO AND IN VIVO AGGREGATION OF PLATELETS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644539.

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The extensive utilisation of in vitro tests of platelet aggregation presumes that corresponding effects occur in vivo. Platelet aggregometry in vitro and in vivo have been compared using a range of agonists in order to test this assumption.PRP from citrated peripheral blood of man, rat and guinea-pig was exposed to ADP, adrenaline, serotonin, collagen, thrombin and PAF in a Born aggregometer to define the time course and amplitude of these responses. In rat and guinea-pig, these aggregatory stimuli have also been used to define the time course and amplitude of intrathoracic accumulation of 111 -Indium labelled platelets, using an automated monitoring system (AIMS 8000).Concordance between these tests was evident for ADP, collagen, thrombin and PAF in both species; but, substantial discrepancy was observed between in vitro and in vivo responses to serotonin and adrenaline, since sustained aggregation followed injection of these agonists in the rat.For these platelet stimuli, in vivo aggregometry in rat and guinea-pig may more faithfully reflect the behaviour of human platelets than in vitro studies.
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Sommacal, Laurent, Pierre Melchior, Jean-Marie Cabelguen, Alain Oustaloup, and Auke Jan Ijspeert. "Fractional Model of a Gastrocnemius Muscle for Tetanus Pattern." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84864.

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This study talks about gastrocnemius muscle identification. During biological activation, every contractile structure is unsynchronized. Likewise, contraction and relaxation phases depend on all contractile elements, the activation type and the state of health. Moreover, gastrocnemius muscle is composed of three fibre types: Fast Fatigable (FF), Fast Resistant (FR) and Slow (S) fibres. Some recent works highlight a fractal structure of the muscle, which consolidate the approach based on the use of a non integer (or fractal) model to characterize its dynamic behavior. A fractional structure model, due to its infinite dimension nature, is particularly adapted to model complex systems with few parameters and to obtain a real time exploitable model. According to its complexity, muscle structure and activation mechanisms, and to these previous considerations, an identification based on fractional model is presented. A model is proposed for the tetanus pattern response in a high tiredness state. It is based on a multi-model structure, which corresponds to the decomposition in contraction and relaxation phases. This multi-model structure is expected to be included subsequently in agonist-antagonist structure.
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Potevin, F., T. Lecompte, C. Lecrubier, and M. Samama. "ADMINISTRATION OF TICLOPIDINE IMPEDES ADP-INDUCED ACTIVATION BUT DOES NOT INDUCE A THROMBASTHENIC STATE." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643852.

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The aim of this study was to reassess the pattern of aggregation and to investigate the platelet-fibrinogen interaction, in response to various agonists, following T. treatment: 250 mg b.i.d. for at least 1 week. Platelets were obtained from healthy volunteers (n=8) as well as from patients with cerebro-vascular disease (n=5). The regimen was able to induce the well-known and expected alterations of platelet behaviour in citrated PRP. Washed platelets were prepared according to MUSTARD et al. (1972). (1) In a first set of experiments it was shown that these alterations persisted after resuspension of twice-washed platelets, in the presence of fibrinogen (3.7 μM); with ADP there was a marked impairment of aggregation, quantified either as maximal change in light transmission (DTLmax), or as maximal velocity; after stimulation with 100 μM ADP there was still a 40% decrease in DTL max and an about 50-fold faster de-aggregation as compared to values obtained without T. treatment. PAF-acether (0.1 to 3 μM): decreased DTLmax mainly with the higher doses, persistent de-aggregation but unimpaired velocity. Collagen (from Stago, μg.ml−1 ): DTLmax was decreased in response to low concentrations only (0.3 and 0.6). Arachidonic acid (20, 50, 100 μM) -induced aggregation remained unchanged, but the concentrations of U 46,619 able to induce an at least 50% DTLmax was shifted from 0.05 to 0.1 or 1.0 μM. (2) The association of human fibrinogen with stimulated platelets was quantified by plotting velocity against concentration of exogenous fibrinogen (0.06, 0.23, 0.92, 3.7 μM). The dose-response curves were modified in the presence of ADP (5 μM) but not PAF (0.5 μM) . With selected low concentrations of collagen or arachidonic acid addition of fibrinogen is a prerequisite for aggregation; under these experimental conditions T. treatment only induced slight modifications of the responses. Fibrinogen-dependent aggregation (DTLmax) of platelets from T. treated patients in response to ADP (10 μM) or after pretreatment with alpha-chymotrypsin was 1/3 and 2/3 of control values respectively. Taken together our results do not support the induction of a functionally thrombasthenic-like state, but rather suggest a selective impairment of ADP-mediated platelet activation. Accordingly, the pattern of platelet behaviour observed under T. treatment can be mimicked by adding ATP (as ADP-antagonist) to normal platelets.
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Perger, Cs, and A. von Felten. "IS IT POSSIBLE TO IDENTIFY HUMAN PLATELETS IN VITRO AS BEING DESENSITIZED TO PLATELET ACTIVATING FACTOR (PAF-ACETHER,PAF) IN VIVO?" In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643484.

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PAF is suggested to be of pathophysiological importance in a variety of diseases. Since platelets exhibit a reduced sensitivity to PAF after a contact with this agent, this behavior may be used as indicator of PAF released into the circulation. In extrinsic asthma, platelets show a diminished reaction to PAF after exposition of the patients to the antigen compared to their own platelets before exposition (Beer and von Felten, Adv. Inflamm. Res. 10:323,1986). We were therefore looking for a test system indicating directly whether platelets had been in contact with PAF.Preparation of PAF-desensitized platelets: Citrated PRP was placed in a cuvette of an aggregometer, and PAF was added in 10 portions at intervals of 10 sec (37oc, constant stirring) to a final concentration of 10 to 100 nM, depending on the individual sensitivity of each platelet preparation. Therby, only a minimal, completely reversible aggregation was registered without any release of serotonin (ST) or 3-thromboglobulin (BTG). Control platelets were pretreated with buffer instead of PAF. Both platelets preparations were kept at 37°C for 45 min. Whereas control platelets showed a secondary aggregation to PAF (5x conc. used for desensitization), PAF-pretreated piatelets were only reversibly aggregated.Sensitivity of PAF-desensitized and control platelets to other platelet agonists: No difference in aggregation, ST-or BTG-relea-se was observed after stimulation with several concentrations of ADP, collagen and arachidonate (p&gt;0.05,n= 41).Binding of 3H-PAF to platelets: PAF-desensitized and control platelets were separated from plasma by filtration through sepharose CL-2B (Pharmacia) in hepes-buffered Tyrode’s solution. After incubation with 3H-PAF, platelets were washed on Whatman 934-AH filters (vacuum filtration). On desensitized and control platelets, we found 175±48 (mean±sd) and 231±70 3H-PAF molecules / platelet respectively after incubation with 5 nM ^h-PAF, 399±36 and 504±66 ^H-PAF molecules / platelet after incubation with 20 nM. In spite of a statistically significant reduction of PAF-binding after desensitization (p&lt;0.01),the variability of PAF-binding between platelets of different individuals is too high to allow a discrimination of normal from PAF-desensitized platelets.
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Reports on the topic "Agonistic behaviour"

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Sherman, Paul. Agonistic Behavior and Dominance in Townsend's Chipmunks (Eutamias townsendii). Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.2038.

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