Relevant bibliographies by topics / Gorillas

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Academic literature on the topic 'Gorillas'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 July 2024

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Journal articles on the topic "Gorillas"

1

Tsuchida, Sayaka, Steven Kakooza, Pierre Mbehang Nguema, Eddie Wampande, and Kazunari Ushida. "Characteristics of Gorilla-Specific Lactobacillus Isolated from Captive and Wild Gorillas." Microorganisms 6, no. 3 (August 14, 2018): 86. http://dx.doi.org/10.3390/microorganisms6030086.

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Lactic acid bacteria (LAB) reside in a wide range of mammals, such as autochthonous intestinal bacteria. In this paper, we present the phenotypic and phylogenetic characteristics of gorilla-specific LAB. Lactobacillus gorillae—previously isolated from the wild and captive western lowland gorillas (Gorilla gorilla gorilla)—were successfully isolated from wild mountain gorillas (Gorilla gorilla beringei) in addition to other captive and wild western lowland gorillas. The strains from wild gorillas could ferment D-xylose, arbutine, cellobiose, and trehalose better than those from captive gorillas. By contrast, tolerance to NaCl was higher in isolates from captive gorillas than in those from wild gorillas. This tendency may have been induced by regular foods in zoos, which contain sufficient amount of salts but less amount of indigestible fiber and plant secondary metabolites compared to foods in the wild. All strains of L. gorillae showed inhibitory activities to enteric pathogenic bacteria; however, the activity was significantly higher for strains from wild gorillas than for those from captive gorillas. This may have been induced by the captive condition with routine veterinary intervention. Since L. gorillae can grow in the gastrointestinal tract of gorillas in captivity, the strains from wild mountain gorillas are potential probiotics for gorillas under captive conditions.
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MAPUA, MWANAHAMISI I., MONEEB A. QABLAN, KATEŘINA POMAJBÍKOVÁ, KLÁRA J. PETRŽELKOVÁ, ZUZANA HŮZOVÁ, JANA RÁDROVÁ, JAN VOTÝPKA, et al. "Ecology of malaria infections in western lowland gorillas inhabiting Dzanga Sangha Protected Areas, Central African Republic." Parasitology 142, no. 7 (March 4, 2015): 890–900. http://dx.doi.org/10.1017/s0031182015000086.

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SUMMARYAfrican great apes are susceptible to infections with several species of Plasmodium, including the predecessor of Plasmodium falciparum. Little is known about the ecology of these pathogens in gorillas. A total of 131 gorilla fecal samples were collected from Dzanga-Sangha Protected Areas to study the diversity and prevalence of Plasmodium species. The effects of sex and age as factors influencing levels of infection with Plasmodium in habituated gorilla groups were assessed. Ninety-five human blood samples from the same locality were also analysed to test for cross-transmission between humans and gorillas. According to a cytB PCR assay 32% of gorilla's fecal samples and 43·1% human individuals were infected with Plasmodium spp. All Laverania species, Plasmodium vivax, and for the first time Plasmodium ovale were identified from gorilla samples. Plasmodium praefalciparum was present only from habituated individuals and P. falciparum was detected from human samples. Although few P. vivax and P. ovale sequences were obtained from gorillas, the evidence for cross-species transmission between humans and gorillas requires more in depth analysis. No association was found between malaria infection and sex, however, younger individuals aged ≤6 years were more susceptible. Switching between two different Plasmodium spp. was observed in three individuals. Prolonged monitoring of Plasmodium infection during various seasons and recording behavioural data is necessary to draw a precise picture about the infection dynamics.
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Alvarez-Estape, Marina, Harvinder Pawar, Claudia Fontsere, Amber E. Trujillo, Jessica L. Gunson, Richard A. Bergl, Magdalena Bermejo, et al. "Past Connectivity but Recent Inbreeding in Cross River Gorillas Determined Using Whole Genomes from Single Hairs." Genes 14, no. 3 (March 18, 2023): 743. http://dx.doi.org/10.3390/genes14030743.

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The critically endangered western gorillas (Gorilla gorilla) are divided into two subspecies: the western lowland (G. g. gorilla) and the Cross River (G. g. diehli) gorilla. Given the difficulty in sampling wild great ape populations and the small estimated size of the Cross River gorilla population, only one whole genome of a Cross River gorilla has been sequenced to date, hindering the study of this subspecies at the population level. In this study, we expand the number of whole genomes available for wild western gorillas, generating 41 new genomes (25 belonging to Cross River gorillas) using single shed hairs collected from gorilla nests. By combining these genomes with publicly available wild gorilla genomes, we confirm that Cross River gorillas form three population clusters. We also found little variation in genome-wide heterozygosity among them. Our analyses reveal long runs of homozygosity (>10 Mb), indicating recent inbreeding in Cross River gorillas. This is similar to that seen in mountain gorillas but with a much more recent bottleneck. We also detect past gene flow between two Cross River sites, Afi Mountain Wildlife Sanctuary and the Mbe Mountains. Furthermore, we observe past allele sharing between Cross River gorillas and the northern western lowland gorilla sites, as well as with the eastern gorilla species. This is the first study using single shed hairs from a wild species for whole genome sequencing to date. Taken together, our results highlight the importance of implementing conservation measures to increase connectivity among Cross River gorilla sites.
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Sandbrook, Chris, and Stuart Semple. "The rules and the reality of mountain gorilla Gorilla beringei beringei tracking: how close do tourists get?" Oryx 40, no. 4 (October 2006): 428–33. http://dx.doi.org/10.1017/s0030605306001323.

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Mountain gorilla Gorilla beringei beringei tracking tourism generates important revenue for conservation efforts but brings with it the threat of disease transmission into the gorilla population. This study quantifies for the first time aspects of encounters between gorillas and tourists at Bwindi Impenetrable National Park that are likely to contribute to the risk of disease transmission. These include how close tourists get to gorillas, how close encounters are initiated, how long they last, and the age class of gorillas involved. Tourists got significantly closer to gorillas than the park rules allow (a mean of 2.76 m, compared to the rule of 7 m), and remained close for long periods. Contacts with the gorillas most vulnerable to disease, the juveniles, were closer but of shorter duration than those with adults. Contacts initiated by gorillas were closer but shorter than those initiated by tourists. Taken together these results demonstrate that the present rules are failing, and that the risk of disease transmission may be greater than previously believed.
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Roy, Justin, Mimi Arandjelovic, Brenda J. Bradley, Katerina Guschanski, Colleen R. Stephens, Dan Bucknell, Henry Cirhuza, et al. "Recent divergences and size decreases of eastern gorilla populations." Biology Letters 10, no. 11 (November 2014): 20140811. http://dx.doi.org/10.1098/rsbl.2014.0811.

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Compared with other African apes, eastern gorillas ( Gorilla beringei ) have been little studied genetically. We used analysis of autosomal DNA genotypes obtained from non-invasively collected faecal samples to estimate the evolutionary histories of the two extant mountain gorilla populations and the closely related eastern lowland gorillas. Our results suggest that eastern lowland gorillas and mountain gorillas split beginning some 10 000 years ago, followed 5000 years ago by the split of the two mountain gorilla populations of Bwindi Impenetrable National Park and the Virungas Massif. All three populations have decreased in effective population size, with particularly substantial 10-fold decreases for the mountain gorillas. These dynamics probably reflect responses to habitat changes resulting from climate fluctuations over the past 20 000 years as well as increasing human influence in this densely populated region in the last several thousand years.
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Lockard, Joan, and Jennifer Scott. "FEMALE DOMINANCE RELATIONSHIPS AMONG CAPTIVE WESTERN LOWLAND GORILLAS: COMPARISONS WITH THE WILD." Behaviour 136, no. 10-11 (1999): 1283–310. http://dx.doi.org/10.1163/156853999500721.

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AbstractFemale dominance relationships were studied among three family groups of western lowland gorillas (Gorilla gorilla gorilla) housed in large enclosures at Howletts Wild Animal Park, in Kent, England. In common with gorillas in their natural habitat, the Howletts gorillas forage throughout the day on low nutrient foods. However, the latter differ, at least from mountain gorillas (Gorilla gorilla beringei), in that they also have relatively frequent access to high nutrient, high energy novel food items which are patchily distributed in time and space, and defendable. It was predicted that, despite these differences, the Howletts females would resemble mountain gorillas in forming adult female dominance hierarchies (determined from supplant interactions) in which older females that have lived in the group the longest are dominant to younger females, more recent to the group. The comparison was made with mountain gorillas as they are the only gorilla subspecies for which such data exist for wild-living populations. As predicted, an age/tenure-based dominance hierarchy was found to be the case for those groups at Howletts where there was considerable variation between the females' ages and length of group tenure. As gorillas and chimpanzees resemble more closely each other in forming age/tenure-based dominance hierarchies than they do other female-transfer primate species, it is proposed that the gorilla-chimpanzee pattern may have common phylogenetic origins. In addition, the order of progression of gorillas into their indoor living quarters appears to be a good indicator of supplant-dominance relationships among adult group members. It was also found that, despite being removed from their natural habitat, dominant males in captivity still lead their groups during group travel in the same manner that do males in the wild: either at the head, or bringing up the rear. Though primate social behaviour may be flexible depending on immediate context and life history variables, this flexibility may well remain within evolutionarily defined parameters, leading to species-typical patterns in general social interactions.
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Oyaba Yinda, Leresche Even Doneilly, Richard Onanga, Pierre Philippe Mbehang Nguema, Etienne François Akomo-Okoue, Gontran Nsi Akoue, Neil Michel Longo Pendy, Desire Otsaghe Ekore, et al. "Phylogenetic Groups, Pathotypes and Antimicrobial Resistance of Escherichia coli Isolated from Western Lowland Gorilla Faeces (Gorilla gorilla gorilla) of Moukalaba-Doudou National Park (MDNP)." Pathogens 11, no. 10 (September 23, 2022): 1082. http://dx.doi.org/10.3390/pathogens11101082.

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(1) Background: Terrestrial mammals in protected areas have been identified as a potential source of antimicrobial-resistant bacteria. Studies on antimicrobial resistance in gorillas have already been conducted. Thus, this study aimed to describe the phylogroups, pathotypes and prevalence of antimicrobial resistance of Escherichia coli isolated from western lowland gorilla’s faeces living in MDNP. (2) Materials and Methods: Ninety-six faecal samples were collected from western lowland gorillas (Gorilla gorilla gorilla) during daily monitoring in the MDNP. Sixty-four E. coli isolates were obtained and screened for phylogenetic and pathotype group genes by polymerase chain reaction (PCR) after DNA extraction. In addition, antimicrobial susceptibility was determined by the disk diffusion method on Mueller Hinton agar. (3) Results: Sixty-four (64%) isolates of E. coli were obtained from samples. A high level of resistance to the beta-lactam family, a moderate rate for fluoroquinolone and a low rate for aminoglycoside was obtained. All E. coli isolates were positive in phylogroup PCR with a predominance of A (69% ± 11.36%), followed by B2 (20% ± 19.89%) and B1 (10% ± 8.90%) and low prevalence for D (1% ± 3.04%). In addition, twenty E. coli isolates (31%) were positive for pathotype PCR, such as EPEC (85% ± 10.82%) and EPEC/EHEC (15% ± 5.18%) that were obtained in this study. The majority of these MDR E. coli (DECs) belonged to phylogenetic group A, followed by MDR E. coli (DECs) belonging to group B2. (4) Conclusion: This study is the first description of MDR E. coli (DECs) assigned to phylogroup A in western lowland gorillas from the MDNP in Gabon. Thus, wild gorillas in MDNP could be considered as asymptomatic carriers of potential pathogenic MDR E. coli (DECs) that may present a potential risk to human health.
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ČERVENÁ, BARBORA, PETER VALLO, BARBORA PAFČO, KATEŘINA JIRKŮ, MILOSLAV JIRKŮ, KLÁRA JUDITA PETRŽELKOVÁ, ANGELIQUE TODD, ANDREA K. TURKALO, and DAVID MODRÝ. "Host specificity and basic ecology ofMammomonogamus(Nematoda, Syngamidae) from lowland gorillas and forest elephants in Central African Republic." Parasitology 144, no. 8 (March 9, 2017): 1016–25. http://dx.doi.org/10.1017/s0031182017000221.

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SUMMARYSyngamid strongylids of the genusMammomonogamusundoubtedly belong among the least known nematodes with apparent zoonotic potential and the real diversity of the genus remains hard to evaluate without extensive molecular data. Eggs ofMammomonogamussp. are frequently found in feces of African forest elephants (Loxodonta cyclotis) and western lowland gorillas (Gorilla gorilla gorilla) in Dzanga-Sangha Protected Areas. Using sedimentation-based coproscopic techniques, we found the eggs ofMammomonogamusin 19·7% elephant and 54·1% gorilla fecal samples with 8–55 and 1–24 eggs per gram of fecal sediment for elephants and gorillas, respectively. We used a combination of light microscopy, scanning electron microscopy and analysis of cytochromecoxidase subunit I (cox1) and a partial sequence of 18S rDNA isolated from single eggs to test the hypothesis of possibleMammomonogamusconspecificity in gorillas and elephants. Whereas 18S rDNA sequences were identical in both gorillas and elephants, we distinguished seven different haplotypes within thecox1. Two haplotypes were found in both gorillas and elephants suggesting sharing ofMammomonogamus.Assignment of the parasite toM. loxodontisis proposed. Provided sequences represent the first genomic data onMammomonogamusspp.
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You, Jinhua, Heming Jia, Di Wu, Honghua Rao, Changsheng Wen, Qingxin Liu, and Laith Abualigah. "Modified Artificial Gorilla Troop Optimization Algorithm for Solving Constrained Engineering Optimization Problems." Mathematics 11, no. 5 (March 5, 2023): 1256. http://dx.doi.org/10.3390/math11051256.

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The artificial Gorilla Troop Optimization (GTO) algorithm (GTO) is a metaheuristic optimization algorithm that simulates the social life of gorillas. This paper proposes three innovative strategies considering the GTO algorithm’s insufficient convergence accuracy and low convergence speed. First, a shrinkage control factor fusion strategy is proposed to expand the search space and reduce search blindness by strengthening the communication between silverback gorillas and other gorillas to improve global optimization performance. Second, a sine cosine interaction fusion strategy based on closeness is proposed to stabilize the performance of silverback gorillas and other gorilla individuals and improve the convergence ability and speed of the algorithm. Finally, a gorilla individual difference identification strategy is proposed to reduce the difference between gorilla and silverback gorillas to improve the quality of the optimal solution. In order to verify the optimization effect of the modified artificial gorilla troop optimization (MGTO) algorithm, we used 23 classic benchmark functions, 30 CEC2014 benchmark functions, and 10 CEC2020 benchmark functions to test the performance of the proposed MGTO algorithm. In this study, we used a total of 63 functions for algorithm comparison. At the same time, we carried out the exploitation and exploration balance experiment of 30 CEC2014 and 10 CEC2020 functions for the MGTO algorithm. In addition, the MGTO algorithm was also applied to test seven practical engineering problems, and it achieved good results.
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Rothman, Jessica M., Andrew J. Plumptre, Ellen S. Dierenfeld, and Alice N. Pell. "Nutritional composition of the diet of the gorilla (Gorilla beringei): a comparison between two montane habitats." Journal of Tropical Ecology 23, no. 6 (October 29, 2007): 673–82. http://dx.doi.org/10.1017/s0266467407004555.

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The mountain gorilla (Gorilla beringei beringei) lives in two geographically separated populations, Bwindi Impenetrable National Park, Uganda and in three national parks spanning the Virunga mountain region in Rwanda, Democratic Republic of Congo, and Uganda. The altitude, climate and plant composition of these habitats differ. Our goal was to compare the diets of gorillas living in each of these habitats. The nutrients in staple foods and in the diets of individuals in a group of gorillas in Bwindi (N = 12 individuals) and a group in the Virungas (N = 7 individuals) were compared to determine if differences in dietary composition affected concentrations of nutrients in their diets. At both sites gorilla diets consisted primarily of herbaceous leaves, but the diet of Bwindi gorillas contained more tree leaves, fruit, pith and dry wood, and fewer stems. Despite differences in habitat and dietary composition, the nutrient concentrations in both gorilla diets were remarkably similar. On a dry matter basis, the diets and staple foods of Bwindi and Virunga gorillas contained similar concentrations of crude protein (CP), fibre (NDF) and non-structural carbohydrates (TNC). Bwindi gorillas ate diets containing 18% CP, 43% NDF and 19% TNC on a dry-matter basis, while the diets of the Virunga gorillas contained 17% CP, 41% NDF and 18% TNC. Our results demonstrate that gorillas consume diets that differ by plant species and part, but contain similar concentrations of nutrients. This suggests that classifying animals by broad dietary strategy (e.g. frugivory and folivory) does not provide a reliable indicator of the nutritional quality of their diet, and that our previous assumptions about these categories should be re-evaluated.
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Dissertations / Theses on the topic "Gorillas"

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Nowell, Angela A. "Behavioural development in wild Western lowland gorillas (Gorilla gorilla gorilla)." Thesis, University of Chester, 2005. http://hdl.handle.net/10034/77614.

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Behavioural development has received little attention in primates, despite having important influences on infant mortality, interbirth intervals, and therefore, growth of populations. Gorillas have long developmental periods, exhibit strong maternal bonds and integrate into intricate social systems, making them an ideal species in which to investigate non-human primate development. Gorillas exist across a range of habitats, and differences in behaviour, both within and between species reflect socioecological differences, for example, in the availability and distribution of food. Consequently, by using gorillas as a model, opportunities also exist to investigate environmental constraints on the development of independence. This study provides the first detailed analysis, with reference to ecological factors, of the development of behavioural skills and relationships in wild western lowland gorillas (Gorilla gorilla gorilla). Behavioural development of western lowland gorillas is then compared with published accounts of development in mountain gorillas (Gorilla beringei beringei) to determine the extent to which differing ecology influences behaviour. The study was conducted at Mbeli Bai in the Republic of Congo, a large, marshy clearing, visited by gorillas predominantly for feeding purposes. Data were collected using scan, focal, all-occurrence and ad libitum sampling methods from 58 gorillas below 8 years of age. Spatial relationships, suckling, and the nature of interactions involving immature individuals were analysed. The distribution of time between different behaviours by immatures, and the development of independent feeding and travelling behaviour was also investigated, and all were tested for differences as a result of immature age, sex and social group, or the mother's parity. Towards the end of infancy, individuals showed competent feeding behaviour in the bai. However, western lowland gorillas were not weaned until the juvenile period, and until this time, close association was common between mothers and offspring. With increasing independence from the mother there was limited investment in relationships with other individuals, and instead, a greater emphasis was placed on developing skills through play, alloparenting and agonistic interactions. When results were compared with those of mountain gorillas, there was evidence of increased investment in relationships, particularly with the silverback, by immature mountain gorillas, which was assumed to reflect lower rates of natal dispersal by mountain gorillas, and the greater likelihood that relationships with individuals in the natal group could prove useful in the future. Suckling and close proximity to the mother continued until later ages in western lowland gorillas, resulting in clear differences between them mountain gorillas in the duration of investment by mothers. More frugivorous western lowland gorillas required increased levels of investment by the mother before independence could be achieved, demonstrating the effect that resource availability can have on behavioural development in species where resources are widely and unpredictably dispersed.
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Mallavarapu, Suma. "Post-Conflict Behavior in Captive Western Lowland Gorillas (Gorilla gorilla gorilla)." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7614.

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Post-conflict behaviors, including reconciliation, redirected aggression, and consolation, have been observed in several primate and non-primate species. These behaviors are thought to help re-establish rates of affiliation and tolerance to baseline levels, by terminating the victims stress response, and reducing the social tension created by conflict. Post-conflict behavior was examined in two groups (N = 13) of captive western lowland gorillas, a species for which no previous conflict resolution data exist. The post-conflict/matched-control method was used to observe the groups at Zoo Atlanta. Analyses of 223 conflicts (using chi-square, Wilcoxon signed ranks, and Kolmogorov-Smirnov tests) showed significantly more affiliation between former opponents after a conflict when compared to control periods, indicating reconciliation. Results also showed significantly more affiliation between the victim and a third-party after a conflict, indicating consolation. Both solicited and unsolicited consolation were observed. Instances of redirected aggression were very few, and thus not included in the analyses. The majority of the affiliative interactions were social proximity, which suggests that unlike most nonhuman primates, proximity, rather than physical contact, may be the main mechanism for resolving conflicts in western lowland gorillas. Post-conflict behavior was not uniform throughout the groups, but rather varied according to dyad type (for instance, adult-adult, juvenile-juvenile, adult-juvenile, etc.). Effects of kinship and the intensity of aggression during a conflict on post-conflict behavioral patterns were analyzed.
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Fletcher, Alisson W. "The social development of immature mountain gorillas (Gorilla gorilla beringei)." Thesis, University of Bristol, 1994. http://hdl.handle.net/1983/5e41bec3-a725-49cc-bbc8-84d49e4794d5.

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Eckardt, Winnie. "Maternal investment in mountain gorillas (Gorilla beringei beringei)." Thesis, University of Chester, 2010. http://hdl.handle.net/10034/211249.

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Investigating maternal investment (Ml) and mother-offspring relationships during the period of infant dependency is critically important to furthering the understanding of female reproductive strategies in primates. Infant primates are completely dependent upon their mothers. The way in which a mother allocates her resources therefore is crucial for infant survival, but is balanced Against her need to invest in subsequent offspring. One approach to examining how mothers might invest in their offspring stems from the Trivers & Willard hypothesis (TWH, 1973), which predicts that mothers in good condition should bias their investment towards sons and whereas mothers in poorer condition should bias investment toward daughters. Long-term demographic records on birth sex ratio and inter-birth interval suggest that female mountain gorillas (Gorilla beringei beringei) do not bias investment prenatally, but they may adjust postnatal Ml according to the TWH. This study investigated Ml and mother-offspring relationships in wild mountain gorillas, using behavioural correlates of Ml, including suckling, weaned age, physical contact, "transport, and grooming to redress the lack of understanding about Ml in this species. The appropriateness of TWH was investigated, integrating different indicators of maternal condition. Important determinants of Ml and mother-offspring relationships were considered, such as offspring age, parity, presence of siblings and maternal relatives, group size and lastly, personality, which has been largely neglected in nonhuman primates. The extent, to which the offspring influenced Ml patterns, was examined using the parent-offspring conflict theory (Trivers, 1972) as a theoretical framework. During 2006-2007, 38 mother-offspring dyads were observed in the Virunga massif, resulting in 1210 hours of direct behavioural observation. Additional field data from the previous four decades were integrated into the dataset for the analysis of suckling and weaned age. Gorilla personality was assessed through the Hominoid Personality Questionnaire. Findings relating to suckling frequency, weaned age, and maternal feeding activities were consistent with the TWH: sons suckled more often than daughters when they had mothers in good condition, whereas the reverse sex-pattern occurred in offspring with mothers in poorer condition. In addition, daughters were weaned at an earlier age than sons when mothers were in better condition, although this sex-difference reduced in older mothers that were categorised as being in good condition. Maternal feeding time and feeding efficiency revealed that mothers in poorer condition spent more time ingesting food when they had daughters, whereas mothers in better .condition spent more time ingesting food when they had sons. Furthermore, group size affected lactation duration with offspring in small groups being weaned earlier than offspring in large groups. Behavioural conflicts over Ml showed that the mother and offspring influenced Ml patterns during the period of dependency. Finally, six personality dimensions were identified, of which five revealed effects maternal behaviour, such as maternal retrieval, responsiveness and rejection, although their relative importance varied between those behaviours. In general, mother and offspring personality effects were complex due to their interactions with the developmental stage of offspring. In conclusion, my thesis research has made several novel contributions to furthering the understanding of female reproductive strategies in the highly endangered mountain gorilla. I presented the first evidence using behavioural data that females bias their postnatal investment towards the sex with the greatest fitness return as predicted by the TWH. My findings are discussed in the light of alternative Ml strategies, such as the local resource competition and enhancement model. My research has highlighted the importance of integrating anthropometric and physiological measures and demographic long-term data into future Ml studies to assess direct costs and benefits of Ml. The examination of mother-offspring behavioural conflicts showed that offspring have a strong impact on the level of Ml they receive. I have also examined the personality of a wild mountain gorilla population for the first time. My findings demonstrate that personality-parenting links are evident in several respects and I have demonstrated the great potential of personality as a determinant of maternal behaviour and mother-offspring relationships.
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Ogden, Jacqueline Jean. "A comparative evaluation of naturalistic habitats for captive lowland gorillas (Gorilla gorilla gorilla)." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/29173.

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Hoellein, Less Elena. "Adiposity in Zoo Gorillas (Gorilla Gorilla Gorilla): The Effects Of Diet And Behavior." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1322582620.

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Leeds, Charles Austin. "A Physiological Evaluation of Social Bonding in Western Lowland Gorillas (Gorilla gorilla gorilla)." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1554396989561718.

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Davenport, Jackie Elizabeth. "Postconflict and conflict behavior in all-male groups of captive western lowland gorillas (Gorilla gorilla gorilla)." [Ames, Iowa : Iowa State University], 2008.

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9

Klailova, Michelle. "interunit, environmental and interspecific influences on silverback-group dynamics in western lowland gorillas (Gorilla gorilla gorilla)." Thesis, University of Stirling, 2011. http://hdl.handle.net/1893/3015.

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While a major benefit of female-male associations in gorillas is protection from infanticidal males, a silverback is also responsible for providing overall group stability and protection from predation and other environmental or interspecific risks and disturbances. A silverback’s reproductive success will be a function of his group’s survival, his females’ reproductive rates and the survival of his progeny. Here, I evaluate the western lowland silverback’s role as the protective leader of his group and provide the first detailed behavioural study of silverback-group dynamics for western lowland gorillas from a holistic perspective; in both forested and bai environments, from nest-to-nest. Behavioural data were collected from one single-male habituated western lowland gorilla group, over 12-months starting January 2007 at the Bai Hokou Primate Habituation Camp, Central African Republic. Data collection - instantaneous scans, continuous written records of all auditory signals, nesting data, and ad libitum notes on interunit interactions - focused on the silverback and those individuals in his immediate proximity. Analyses were conducted over 258 morning or afternoon sessions, on 3,252 silverback behaviour scans (plus 1,053 additional smell scans), 22,343 auditory signals and 166 nest sites. Evidence from neighbours to the silverback, group spread, progression, ranging, nesting, human directed aggression and silverback chemosignalling analyses suggest that silverback-group dynamics have developed complex, strategic spatial and social strategies to cope with perceived risk in rainforest environments, which respond to differing habitats, and differing intensities of interunit interactions and interspecific disturbance. I also show that the release of pungent extreme and high level silverback odours may function as both acute and chronic indicators of arousal designed to intimidate extragroup rival males and attract adult females by expressing dominance, strength, and health. Higher level silverback odours may also provide cues for group members to increase vigilance in risky situations, whereas low level smells may function as a baseline identification marker and provide both self and intragroup reassurance. Western lowland silverback-group relationships appear to be centred on providing a strong protective – rather than socially interactive - and stabilizing role to ensure group cohesion and safety, which ultimately increases the likelihood of male reproductive success.
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Edes, Ashley N. "Assessing Long-Term Stress in Great Apes: Allostatic Load in Western Lowland Gorillas (Gorilla gorilla gorilla)." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523103332647349.

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Books on the topic "Gorillas"

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Pohl, Kathleen. Gorillas =: Gorilas. Milwaukee, WI: Weekly Reader Early Learning Library, 2007.

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Fleisher, Paul. Gorillas. New York: Benchmark Books, 2001.

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Gish, Melissa. Gorillas. Mankato, MN: Creative Education, 2010.

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ill, Lopez Paul, ed. Gorillas. New York: Grosset & Dunlap, 1994.

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Miller-Schroeder, Patricia. Gorillas. Austin, Tex: Raintree Steck-Vaughn, 1997.

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Meder, Angela. Gorillas. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6.

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7

Gerry, Ellis, ed. Gorillas. New York, NY: Friedman/Fairfax Publishers, 1994.

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Armentrout, David. Gorillas. Vero Beach, FL: Rourke Pub., 2008.

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Gorillas. Mankato, MN: Creative Paperbacks, 2012.

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Publishing, Gareth Stevens, ed. Gorillas. Milwaukee, WI: Gareth Stevens Pub., 2004.

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Book chapters on the topic "Gorillas"

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Meder, Angela. "Vom wilden Monster zum sanften Riesen." In Gorillas, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6_1.

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Meder, Angela. "Die Art Gorilla gorilla." In Gorillas, 5–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6_2.

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Meder, Angela. "Ökologie und Lebensraum." In Gorillas, 27–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6_3.

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Meder, Angela. "Aktivität und Sozialstruktur." In Gorillas, 59–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6_4.

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Meder, Angela. "Verhalten." In Gorillas, 85–153. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6_5.

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Meder, Angela. "Gorillas im Zoo und in der Forschung." In Gorillas, 154–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6_6.

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Meder, Angela. "Einflüsse des Menschen auf die Gorillabestände." In Gorillas, 169–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78204-6_7.

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Sarkar, Debashis. "The invisible gorillas." In Behavioural Science for Quality and Continuous Improvement, 123–29. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003250517-20.

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Johnson, Michael L. "Chimpanzees, Gorillas, Fictionalization." In Mind, Language, Machine, 27–30. London: Palgrave Macmillan UK, 1988. http://dx.doi.org/10.1007/978-1-349-19404-9_6.

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Orth, Barbara. "Riders United Will Never Be Divided?" In Platformization of Urban Life, 185–204. Bielefeld, Germany: transcript Verlag, 2022. http://dx.doi.org/10.14361/9783839459645-012.

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Abstract:
In this paper Barbara Orth offers an analysis of the ongoing labor organizing effort at the grocery delivery platform Gorillas in the German capital Berlin. She argues that a particular combination of external circumstances and successful organizing strategies enabled a relatively small group of workers to temporarily disrupt a growing billion-dollar business. While the collective actions at Gorillas thus illustrate how local conditions can be successfully leveraged to disrupt a platform's operations from below, the paper cautions against generalizing from the Gorillas experience. Given the unpredictability of venture capital-driven markets¡ it remains a cautionary tale.
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Conference papers on the topic "Gorillas"

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Allison, Don, Brian Wills, Larry F. Hodges, and Jean Wineman. "Interacting with virtual gorillas." In ACM SIGGRAPH 96 Visual Proceedings: The art and interdisciplinary programs of SIGGRAPH '96. New York, New York, USA: ACM Press, 1996. http://dx.doi.org/10.1145/253607.253874.

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Brust, Clemens-Alexander, Tilo Burghardt, Milou Groenenberg, Christoph Kading, Hjalmar S. Kuhl, Marie L. Manguette, and Joachim Denzler. "Towards Automated Visual Monitoring of Individual Gorillas in the Wild." In 2017 IEEE International Conference on Computer Vision Workshop (ICCVW). IEEE, 2017. http://dx.doi.org/10.1109/iccvw.2017.333.

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Winquist, Erik, Kevin Smith, Phillip Leonhardt, Aidan Martin, and Paul Story. "Monkeys, Chimps & Gorillas: Wētā FX’s (r)Evolutionary Work with Primates." In SIGGRAPH Production Sessions '24: ACM SIGGRAPH 2024 Production Sessions. New York, NY, USA: ACM, 2024. http://dx.doi.org/10.1145/3641232.3649252.

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"Reverse Crescent Kick." In Happy Gorilla Game Studio Conference. London, United Kingdom: Happy Gorilla Game Studios, 2020. http://dx.doi.org/10.2217/103325-media.

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Ferreiro, Coke. "Gorilla." In ACM SIGGRAPH 2009 Computer Animation Fesitval. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1596685.1596736.

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Clerke, Yolande. "Gorillaz Stylo." In ACM SIGGRAPH 2010 Computer Animation Fesitval. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1836623.1836646.

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Strobl, Kim. "Gorillaz "El Mañana"." In ACM SIGGRAPH 2007 computer animation festival. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1281740.1281801.

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Gray, Stuart, Fay Clark, Katy Burgess, Tom Metcalfe, Anja Kadijevic, Kirsten Cater, and Peter Bennett. "Gorilla game lab." In ACI18: Fifth International Conference on Animal-Computer Interaction. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3295598.3295604.

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Candeland, Pete, and Jamie Hewlett. "Gorillaz "rock da house"." In the 29th International Conference. New York, New York, USA: ACM Press, 2002. http://dx.doi.org/10.1145/2931127.2931266.

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Hewlett, Jamie, Pete Candeland, and Kim Strobl. "Gorillaz 'On Melancholy Hill'." In SA '11: SIGGRAPH Asia 2011. New York, NY, USA: ACM, 2011. http://dx.doi.org/10.1145/2077356.2425745.

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Reports on the topic "Gorillas"

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Sue Margulis, Sue Margulis. How do gorillas see the world? Experiment, October 2016. http://dx.doi.org/10.18258/8101.

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Caroline Jones, Caroline Jones. Friends and food...how does an artificial termite mound affect the social behavior of gorilla groups? Experiment, September 2017. http://dx.doi.org/10.18258/9947.

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Plumptre, Andrew J., Stuart Nixon, Robert Critchlow, Ghislain Vieilledent, Radar Nishuli, Andrew Kirkby, Elizabeth A. Williamson, Jefferson S. Hall, and Deo Kujirakwinja. Status of Grauer's Gorilla and Chimpanzees in Eastern Democratic Republic of Congo: Historical and Current Distribution and Abundance. Wildlife Conservation Society, 2015. http://dx.doi.org/10.19121/2015.report.dmx3094100000.

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