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Dissertations / Theses on the topic 'Etologi'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Norell, Ulrika. "Pedagogiskt material i etologi för gymnasiet." Thesis, Högskolan i Gävle, Akademin för teknik och miljö, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-8127.

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Syftet med undersökningen var att försöka se om elever lär sig mer genom en praktisk lektion med hundar eller genom att spela memory. Två lektioner, en praktisk och ett memoryspel, utarbetades utifrån kursmål i gymnasiekurserna Etologi och Hundar, med bakgrund i aktuell forskning kring hundens sinnen, signaler och sociala beteende. Elevunderlaget i undersökningen bestod av en SP-klass, en NV-klass och två naturbruksklasser. Undersökningen visade inga påtagliga skillnader mellan vilka som lärde sig mest, dock fick memorygrupperna ett något bättre resultat än de som fick en praktisk lektion. Vis

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2

Alklind, Anna-sofia. "Antropomorfism och kognitiv etologi : Hur människor tolkar djurs beteende." Thesis, University of Skövde, Department of Computer Science, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-278.

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<p>Enligt vissa kontroversiella forskare, som kallar sig kognitiva etologer, så kan antropomorfism användas i forskningssyfte inom djurkognition. Syftet med den här rapporten är att analysera antropomorfism och dess grundläggande beståndsdelar, samt utföra en undersökning för att ta reda på vilka faktorer som påverkar människors tolkningar av djurs beteende. Tre personer fick kommentera några videosekvenser, innehållande djur. De skulle låtas att de var ett av djuren och efter varje videosekvens blev de utfrågade om hur de hade resonerat under "agerandet". Den kvalitativa analysen av materiale

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3

Alklind, Anna-Sofia. "Antropomorfism och kognitiv etologi : Hur människor tolkar djurs beteende." Thesis, Högskolan i Skövde, Institutionen för datavetenskap, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-278.

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Enligt vissa kontroversiella forskare, som kallar sig kognitiva etologer, så kan antropomorfism användas i forskningssyfte inom djurkognition. Syftet med den här rapporten är att analysera antropomorfism och dess grundläggande beståndsdelar, samt utföra en undersökning för att ta reda på vilka faktorer som påverkar människors tolkningar av djurs beteende. Tre personer fick kommentera några videosekvenser, innehållande djur. De skulle låtas att de var ett av djuren och efter varje videosekvens blev de utfrågade om hur de hade resonerat under "agerandet". Den kvalitativa analysen av materialet v

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4

Thernström, Taina. "Maximum price paid in captive bush dogs (Speothos venaticus)." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77923.

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One way to investigate what animals in captivity might need is to conduct preference and motivational tests. These types of tests can help facilitate the animals to express different priorities. The motivation can be assessed by having the animals “pay an entry cost” (e.g. push a weighted door) that increases with time to get access to a resource. The highest price that the animals are willing to pay for this resource is called “the maximum price paid”. This study intends to test the maximum price paid to access for food in a group of bush dogs kept at Kolmården Wildlife Park.

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Väisänen, Johanna. "Characterisation of social behaviour in red junglefowl and White leghorn laying hens : phenotypic and genetic studies /." Linköping : Dept. of Biology, IFM, Univ, 2005. http://www.bibl.liu.se/liupubl/disp/disp2005/tek970s.pdf.

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6

Bergström, Anders. "Oviposition strategies in butterflies and consequences for conservation /." Stockholm : Department of zoology, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-354.

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7

Franzén, Louise. "Manipulation of monoamines and effects on behavior in crickets." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-140444.

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8

Fernlund, Isaksson Erika. "Social learning and brain size in the guppy (Poecilia reticulata)." Thesis, Stockholms universitet, Zoologiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-185607.

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9

Li, Lei. "A behavioral assay for monitoring food self-administration and movement in real-time in fruit fly and its application in alcohol research." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446083.

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10

Berne, Erlend. "Safe, selfish state-independent mobbing behaviour in the cooperatively breeding apostlebird (Struthidea cinerea)." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13150.

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In the last few decades stochastic dynamic modeling (SDM) has been used to explore adaptive state-dependent strategies in a whole host of different theoretical problems in behavioural ecology, with considerable success. It has allowed us to better understand cooperative behaviours such as sentinel behaviour, and it might allow us to more fully understand other cooperative behaviours with alternative dynamics. In a recently developed SDM, anti-predator behaviour was examined and a counter-intuitive prediction has emerged: that mobbing effort should be completely independent of state. In this st

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11

Hultberg, Sandra. "Återhämtningsförmåga efter en stressupplevelse hos röda djungelhöns (Gallus gallus) och domesticerade värphöns, White Leghorn : Ett projektförslag för ämnet biologi på gymnasiet." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69306.

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Många elever ser naturvetenskapliga ämnen som svåra och tappar lätt intresset om inte läraren presenterar ämnet tillfredsställande. Jean Piaget har haft stor betydelse inom pedagogiken, då han menade att intelligens är en metod som barn kan lära sig genom att utforska och laborera. Genom möjligheten att få göra en observationsstudie på höns kom tanken att omarbeta denna till ett etologiprojekt för biologiämnet på gymnasiet. Projektet innebär att eleverna får arbeta med en observationsstudie från grunden, och goda möjligheter finns att integrera andra ämnen i detta. Människan började domesticer

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12

Sopelsa, Hall Emma. "Ex situ lion conservation : Behavioural responses to playbacks of competitors with focus on sex and age differences." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-67338.

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Due to increasing habitat loss, human-lion conflict, poaching and other reasons, African lion (Panthera leo) populations have suffered a drastic decline. The African Lion and Environmental Research Trust (ALERT) is working to stop this pattern and is the first organization with an ex-situ conservation project for lions. Before releasing lions raised by captive-bred adults, they must first be ensured to behave properly to make sure they have the highest chance of survival. One challenge in the wild is encountering and competition with unknown conspecifics. By conducting playback of unfamiliar l

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13

Carlsson, Linett. "Activity and enclosure use of a sand cat in Parken Zoo, Eskilstuna." Thesis, Mälardalen University, School of Sustainable Development of Society and Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-6683.

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<p><strong>The escalating extinction of wildlife puts a high pressure on the standard of ex situ conservation. Some animals may spend several generations in captivity which may affect their natural behaviors and also a future reintroduction into the wild. Observations of animal behavior among captive animals are crucial for the understanding of ex situ conservation effects on behavior and in order to introduce and improve environmental enrichment. This study investigates activity and enclosure use of a sand cat (<em>Felis margarita</em>) at Parken zoo in Eskilstuna Sweden. Direct observations

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14

Vävare, Anna. "Therapets : animal Assisted Therapy ur ett etologiskt perspektiv." Thesis, Stockholm University, Department of Psychology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6628.

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<p>C-uppsatsen behandlar ämnet Animal Assisted Therapy (AAT). Författarens Syfte är att ge en översikt av Arbetsformen AAT samt teoretisk och vetenskaplig bakgrund. Övergripande frågeställning är: Kan husdjur/hundar användas som medhjälpare i terapeutiskt arbete? Underliggande frågeställningar är: Vilka för- och nackdelar kan finnas med att använda husdjur/hundar som medhjälpare i terapeutiskt arbete?, Finns det vetenskaplig grund för att använda husdjur/hundar som medhjälpare i terapeutiskt arbete?, Vilka teorier ligger till grund för att använda husdjur/hundar som medhjälpare i terapeutiskt

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Vävare, Anna. "Animal-Assisted Activity : En översiktsartikel om nyttan av att umgås med djur." Thesis, Stockholm University, Department of Psychology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6629.

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<p>Människan har funnits i nästan två hundra tusen år, och hunden har varit ett husdjur hälften så länge. Evolutionen har format människan till en nyfiken, social varelse med starka emotionella band och goda kommunikationsegenskaper. Människans avancerade perceptionsförmåga kräver en komplicerad neurologisk struktur som lätt störs eller skadas av till exempel stress. Bandet mellan människan och hennes husdjur kan vara mycket starkt och fylla många mänskliga behov. Animal-Assisted Activity är målinriktade aktiviteter för att öka människans livskvalitet genom att utnyttja det band som finns till

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Kivelö, Rebecca. "Beteende och långsam senescens hos nakenråttan (Heterocephalus glaber) : En litteraturstudie om vilka faktorer som påverkar senescens." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-95791.

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Senescens, in common language aging, remains one of the most poorly understood phenomena in biology. However, one thing we do know for sure, is that all individuals will age, and that all who are now young and fertile will eventually get old, and lose their ability to be as susceptible to changes in the environment as they were before. The question is why certain species and individuals become much older than others. With this master thesis, I aim to investigate what evolutionary and physiological factors cause the naked mole rat to become so much older than other similar sized rodents. The st

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17

Åman, Isabelle. "Störningar i ledarhundens arbete : Orsak och konsekvenser." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-53534.

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Aggressivitet är ett vanligt förekommande beteende hos många arter och kan signaleras via både vokalisering och visuella signaler. Beteendet kan grunda sig i exempelvis dominans, konkurrens om en partner eller på att individen försvarar en resurs eller ett revir. För omkring 15 000 år sedan domesticerades vargar Canis lupus, vilket resulterade i underarten hund Canis familiaris och genom ett gediget avelsarbete finns det idag över 400 godkända hundraser. I Sverige finns det omkring 300 aktiva ledarhundar i tjänst och varje år utbildas runt 40 nya hundar som ska komma att arbeta med en ledarhun

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18

Zidar, Josefina. "The relationship between personality and cognition in the fowl, Gallus gallus." Doctoral thesis, Linköpings universitet, Biologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-140361.

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To cope with a changing environment, animals have traditionally been considered to behave adaptively to each situation faced. Yet, individual behavioural responses can both differ widely within populations, and show between-individual consistency (i.e. describing variation in animal personality). In this thesis, I focus on individual differences in animal personality and cognition (i.e. how animals perceive, process, store and act on environmental stimuli), and explore the possibility that they are interlinked. I use domestic- and red junglefowl (Gallus gallus ssp.), a species that is cognitiv

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19

Södergren, Carin. "How stimuli by toys affect pigs growth, health and welfare." Thesis, Högskolan på Gotland, Institutionen för kultur, energi och miljö, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-731.

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Pigs do naturally have a high motivation to explore their environment. In a poor environment pigs still display this motivation and when there is no stimulation in the pen, pigs direct their behavior at pen-mates and pen components. Lack of stimulation can lead to decreased welfare and increased stress. This study investigates if extra stimuli by toys would affect pigs growth, health and welfare. Growing pigs (219) were followed during 7 weeks and divided into twenty two pens, eleven with toys and eleven without toys. I found partly support for the prediction that toys would help in a short ti

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20

Plante-Ajah, Michael. "Bumblebee learning flights at a flower : viewing direction on departure is influenced by landmark position on approach." Thesis, Linköpings universitet, Biologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157084.

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Bumblebees, like other Hymenopterans, perform learning flights when departing their nest for the first few times or when departing from a newly discovered food source. As bees can learn about the landmarks around a flower both on approach and on departure, it is possible that what they see and learn on approach affects what they focus on during their learning flight on departure. In the present study, bumblebees from a commercial colony placed in a greenhouse were allowed to land at an artificial flower next to a single cylindrical landmark in one of three different positions (west, north or e

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Sköld, Rebecka. "Predatoriskt beteende hos hund (Canis lupus familiaris)." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-86002.

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Domesticering av hunden har lett fram till en rad olika hundtyper världen över. Alla dessa togs från början fram för ett visst syfte. Dock används inte hundarna i samma utsträckning för sitt huvudsakliga mål, utan hunden hålls idag främst för sällskap. Trots att hundar alltså inte längre används i det syfte de var framavlade till finns deras beteende kvar i generna. Med detta arbete vill jag belysa det predatoriska beteendet som finns kvar hos hunden, samt hur vissa raser uppvisar en större predatorisk aggressivitet än andra. Vissa raser har större benägenhet att uppvisa detta beteende, oavset

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22

Cederlund, Joakim. "Behavioural responses of Amur tigers (Panthera tigris altaica) and African lions (Panthera leo) to conspecific urine and to a component of tiger marking fluid." Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148053.

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Olfactory signals are an important means of social communication among felids. However, not much is known about how individual volatiles of body-borne odours influence behavioural responses. 2-acetyl-1pyrroline has recently been identified as a characteristic component of tiger marking fluid, while being absent from lion marking fluid. One pride each of captive Amur tigers (Panthera tigris altaica) and African lions (Panthera leo) were presented with wooden logs impregnated with four different odours and their behaviour was observed. The tigers displayed significantly more interactions towards

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Lundgren, Kristoffer. "The influence of dopamine on personality in the Mediterranean field cricket (Gryllus bimaculatus)." Thesis, Linköpings universitet, Biologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138140.

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For some behavior there are consistent differences between individuals within a population, which is called animal personality. Across species, ranging from insects to mammals, personality has been described along behavioral gradients like activity, exploration, boldness and aggression. Monoamines such as dopamine have been shown to be essential for modulating animal behavior and could therefore be important also in explaining variation in animal personality. Supporting this, the dopaminergic system affect activity (in Confused flour beetles), and aggression (in Mediterranean field crickets).

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Rioldi, Emmanuela. "Innovative environmental enrichment method for Pallas cat (Felis manul)." Thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-8354.

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Due to the expansion of the human population we are an increasing threat to all wild animals. They are driven to exist in smaller areas and in the worst case scenario extinction. Zoos are being encouraged to improve the animal’s physical and social surroundings. Environmental enrichment is a term used for such improvements. In this behavioural study, the enrichment introduced to two Pallas cats (Felis manul) at Parken Zoo in Eskilstuna, Sweden, consisted of a fishing rod and a clothes peg with a dead mouse or chick attached. The intention was to see if the feeding enrichment could increase act

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Nauman, Laila. "Operant conditioning in a self controlling test with a reinforcement delay in Pygmy Hippos (Hexaprotodon liberiensis)." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-65616.

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The curiosity whether or not animals have the characteristics of long term planning skills is fairly new. Some researchers agree that certain species have a form of episodic-like memory, in the terms of where, when and what. But the most difficult thing is to find out if these species have an aim for the future which involves what some call mental time travel. This study is a part of the discussion if the tests in long term planning and foresight can be explained by associative learning and the ability of self control in highly trained animals. Many self control and delay tasks have been condu

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Jansson, Emelie. "Influences of environment and personality on cognitive judgment bias in chickens." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-123408.

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Cognitive processes include biases, such as cognitive judgment bias. Cognitive judgment bias influences how the surrounding is interpreted, and this can differ between individuals. However, thus far no formal framework exists to understand how cognitive judgment bias works. Here I investigated how environmental factors and personality influence cognitive judgment bias in Gallus gallus chicks. First I investigated how two environmental factors affected the cognitive judgment bias of laying hen chicks. Chicks were exposed to stress and/or environmental enrichment, and tested in a cognitive judgm

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Veenstra, Arno. "Putting behavioral assays on fish to the test: Are sociality and scototaxis trials relevant in the wild?" Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-172154.

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Animal behavior has become a frequently used tool in modern ecology and ecotoxicology, where laboratory behavioral traits are recognized as sensitive endpoints for assessing natural behavior or non-lethal effects of pollutants on animals. Within these research fields, behavioral traits measured in laboratory environments have been used to formulate predictions of ecological consequences that accompany specific behavior. However, the predictive power of behavioral traits measured in simplified laboratory environments for complex natural aquatic ecosystems has been questioned. In this study, I h

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Jarzembowska, Daria Klaudia. "Inlärt eller medfött? Inblick i djurbeteendets grund och ram : Samt hur etologiundervisning kan organiseras i svenska gymnasieskolan." Thesis, Linköpings universitet, Biologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167439.

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Syftet med denna litteraturstudie var att skapa en sammanhängande bild över djurbeteendets grund och ram. I arbetet analyserades faktorer som påverkar djurbeteendet på grundläggande nivå bl.a. gener, tidiga erfarenheter, hormonnivåer och personlighetstyper. Utöver det skapades en tydlig kategorisering av djurbeteendet med indelning i det medfödda, det inlärda och prägling. Inom de inlärda beteendena identifierades även underklasser där urskildes bl.a. associativ, icke-associativ och social inlärning. Slutligen, för att göra ämnet mer begripligt och belysa den gråa zonen i vi

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Elina, Lundholm. "Olfactory-Related Behaviors in Captive Chimpanzees (Pan troglodytes)." Thesis, Linköpings universitet, Zoologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69247.

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Primates have traditionally been considered having a poor sense of smell compared to other orders of mammals, like carnivores, due to reduced olfactory structures of the primate brain. This thought, however, is slowly changing. There are now a range of studies showing that primates do use their sense of smell, for example in chemical communication. However, few studies have been carried out on olfactory-related behaviors in Great Apes. The aim of this study was to assess the occurrence of olfactory-related behaviors in captive chimpanzees (Pan troglodytes). The results do not only show that ch

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Johanna, Axelsson. "Turn-taking in interspecies vocal communication : A study of dog-human interactions." Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148412.

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Dogs are well adapted to a life close to humans and are capable of understanding several human social cues. Turn-taking is a fundamental phenomenon in human conversations, yet no research of turn-taking in interspecies vocal communication has been done. This pilot study therefore aimed to develop a test method in order to analyze if turn-taking occurs in interspecies vocal communication between dogs and humans and if turn-taking can be correlated with specific behaviors in dogs. By analyzing a vocal conversation between seven dogs and their owners during a request situation in their home envir

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Brännmark, Emma. "Cognitive Bias as a Measurement of Emotional States in Dogs." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166551.

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Cognitive bias can be used when determining emotional states in animals by assessing the animal’s perception of an ambiguous stimulus. In the concept of animal welfare, both physical health as well as mental health of animals are involved. Therefore, cognitive bias can be a valuable tool in order to measure the mental health of an animal. The aim of this paper is to summarize and discuss how cognitive bias tests have been used to assess emotional states in dogs. Cognitive bias tests in dogs have been used to evaluate the emotional state of a dog with behavioural problems. It has also been show

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Ericsson, Maria. "Social behaviour responses in red junglefowl (Gallus gallus) selected for tameness." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57377.

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Historically during domestication of animals, tameness towards humans was likely the most desired trait and therefore bred on. The red junglefowl (Gallus gallus) is the wild progenitor of all domestic chicken breeds and earlier studies present clear morphological, physiological and behavioural differences between domesticated breeds and the non-domesticated red junglefowl. These changes may be the result of altered gene expression - pleiotropy or linked genes. The aim of this thesis was to evaluate (1) effects of tameness selection on social behaviour towards conspecifics and (2) social behavi

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Bengtson, Johanna. "The relationship between behaviour and metabolic rate of juvenile Brown trout Salmo trutta." Thesis, Karlstads universitet, Fakulteten för samhälls- och livsvetenskaper, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4114.

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In salmonids, the decision to migrate or remain resident is influenced by the status, and hence condition, of individuals. Status has been suggested to arise from the temperament of fish. In this study the links between standard metabolic rate and the levels of aggressiveness and shy/boldness were examined for 0+, hatchery-raised brown trout (Salmo trutta). I hypothesized, from the results of earlier studies (Cutts et al., 1998; Yamamoto et al., 1998), that high metabolic rates (MR) would be positively correlated to levels of aggression and boldness. The study was conducted in 200 L aquaria in

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JEAN-LOUIS, Uranie. "Effect of sensory enrichments on the behaviour of captive Northern lynx (Lynx lynx lynx) and assessment of automated behaviour monitoring technologies." Thesis, Linköpings universitet, Biologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157359.

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Captive environments like zoo exhibits offer limited space, lacking many of the environmental stimuli that are present in the wild. This may reduce animal welfare and potentially lead to the development of stereotypic behaviour like pacing. Environmental enrichment is used to prevent and reduce pacing and enhance animal well-being. The aim of this project was to evaluate sensory enrichments, and the effect of such enrichment on pacing in a group of Northern lynx by means of new, automated monitoring technologies in combination with traditional visual observations. The lynxes were exposed to va

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Olsson, Karin. "Är min häst lycklig? : Indikatorer på positiv välfärd hos häst och en checklista för bedömning." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-84576.

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It is now widely accepted that the concept of ”animal welfare” includes both the physical and mental wellbeing, and that providing positive experiences is equally important as avoiding and limiting negative ones. Most scientists seem to agree that horses experience positive welfare when exploring and feeding in complex environments and through friendly interactions with other members of the flock. In contrast, it is less clear in which situations they experience positive welfare when kept in captivity and their natural behaviours are restricted. We need indicators to assess if animals experien

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Ulrich, Marie. "Feeding Behaviour in Loggerhead Sea Turtles (Caretta caretta) : Collection of Movement Data Representative of Feeding Events." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-158002.

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With the different threats sea turtles are currently facing, such as habitat reduction and pollution, increase of fishing and harvesting of aquatic resources by Humans, or invasive species, it is important to learn as much as possible about their biology and behaviour in order to ensure the success of conservation programs. In this study, loggerhead sea turtles (Caretta caretta) feeding behaviour duration as well as energy expenditure approximation during a feeding event were tested and compared using two different types of food: green shore crabs (Carcinus maenas) or Japanese clam (Ruditapes

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Strid, Matilda. "Does Play Pre-separation Affect Separation Behaviors in Dogs?" Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148212.

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Separation anxiety is one of the most common behavioral disorder in companion dogs. Dogs not suffering from separation anxiety may still exhibit separation-related behaviors, which can differ depending on environmental contexts. In the present study, dogs without separation-related problems were video recorded during a short separation (3 min) from, and during reunion with, their owner. Comparison was done between if the dogs had played or been calm pre-separation. The dogs spent most time in proximity to the entrance and gazing towards where the owner left during separation. Their body-positi

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Fischer, Ida. "Does Lifestyle Affect the Attachment between Dogs, Canis familiaris, and Their Owner?" Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148778.

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The aim of this study was to investigate if the dog’s behaviour and the interactions between the dog and the owner differ depending on lifestyle, breed or sex of the dog. For this we employed the Strange Situation Procedure, a test inspired from Mary Ainsworth´s study, which investigated the attachment of human infants to their mothers. There were two breeds, Border collie and Shetland sheepdog and a total of 58 dogs that participated in this study. The two breeds were divided into two lifestyles, competition dogs and pet dogs. A PCA was used to find correlations between the behavioural va

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Kopsch, Nora Tabea. "A cooperation experiment in captive white-handed gibbons (Hylobates lar)." Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149448.

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Cooperative behaviours among individuals play a crucial role in social interactions. There is a special interest in investigating the occurrence of cooperation among apes, because this knowledge could as well shed light on evolutionary processes and help understand the origin and development of cooperation in humans and primates in general. Gibbons are phylogenetically intermediate between the great apes and monkeys, and therefore represent a unique opportunity for comparisons. The aim of the present study was to discover whether or not gibbons (Hylobates lar) show cooperative behaviours among

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Oskarsson, Viktoria. "How does variation in corticosterone relate to animal personality?" Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-150526.

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Animal personality is a fairly new branch of biology and has been defined as a difference in behaviour between individuals that is relatively consistent across time and/or context. What researchers now are interested in is to find out what it is that creates and maintains this relatively consistent difference between individuals. One possibility is the stress hormone, corticosterone. I have in this report summed up some of the available studies regarding animal personality and its possible correlation to corticosterone. The personality traits that have been reviewed in this report are boldness

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Söderquist, Astrid. "Familiarity and personality affect social support in juvenile pigs in a foam stunning situation." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-172276.

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Animals in distress can experience an attenuation of their stress response if provided companionship. This thesis studied the social support phenomenon in 72 nine-week old juvenile pigs (Sus scrofa domesticus) of the crossbreed Yorkshire/Hampshire. Pigs were placed either alone or with a familiar or an unfamiliar age-matched conspecific of the opposite sex in a stunning box. Half of the groups were exposed to an air-filled foam inside of the box and the other half was exposed to an empty box. All pigs underwent an individual behaviour assessment at eight-weeks of age for a personality evaluati

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Håkansson, Jennie. "Behavioural aspects of conservation breeding : Red junglefowl (Gallus gallus) as a case study." Doctoral thesis, Linköpings universitet, Zoologi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-10035.

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Ett stort antal utrotningshotade djurarter ingår idag i bevarandeprogram världen över. Små populationer hålls då i skyddade miljöer, exempelvis i djurparker, och i många fall är målet att återintroducera djur till naturen. Dessvärre är det vanligt att det uppstår problem när djur återintroduceras vilket kan bero på beteendemässiga anpassningar som uppkommit under tiden i fångenskap. Syftet med den här studien var därför att undersöka beteendemässiga aspekter på bevarandeavel och försöka ta reda på om och hur djur påverkas beteendemässigt av att hållas i skyddade fångenskapsmiljöer. I projektet

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Högberg, Sofia. "Zero-order manipulation task to obtain a food reward in Colombian black spider monkeys (Ateles fusciceps rufiventris) kept in a zoo." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-58155.

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Spider monkeys (Ateles sp.) are common in zoological parks, but rare in scientific publications. Studies on tool use in primates have mostly focused on impressive tool users such as chimpanzees. Spider monkeys fulfill several criteria that are known to be associated with tool use. To be able to give an appropriate environment and enrichment for spider monkeys in captivity more knowledge is needed about their cognitive abilities. In this study we wanted to see if five male spider monkeys kept in a zoo could learn to use tools to reach a reward. Experiment 1 examined the subjects

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Kjelmand, Luna. "Olfactory sensitivity of spider monkeys (Ateles geoffroyi) for six structurally related aromatic aldehydes." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18796.

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<p>For many years, primates have been considered to be animals with a poorly developed sense of smell. However, in recent years several studies have shown that at least some primate species have a high olfactory sensitivity for a variety of odorants. The present study used a two-choice instrumental conditioning paradigm to test the olfactory sensitivity for six aromatic aldehydes in four spider monkeys (Ateles geoffroyi). With helional, cyclamal,canthoxal and lilial all animals discriminated concentrations below 1 ppm from the odorless solvent, with single individuals even scoring better. With

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Heurlin, Jasmine. "Behavioral synchronization between dogs and owners." Thesis, Linköpings universitet, Biologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157382.

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Dogs have lived with us for thousands of years, so we have learned to understand one another. Dogs have been shown to synchronize their behavior with humans. Behavioral synchronization is characterizes by doing the same thing at the same time and in the same place as someone else. This synchronization is often dependent on the relationship and the emotional state of the individuals. The main aim in this study was to develop a method to test behavioral synchronization and also to investigate how this, but also other behaviors, are effect by preceding human-dog interactions. Privately owned dogs

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Casaca, Miriam. "Is there hope beyond fear? Effects of social rehabilitation on unsocialized stray dogs." Thesis, Linköpings universitet, Biologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-173581.

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Unsocialized stray dogs live unrestrained in urban areas, having limited to no direct contact with humans. Aggressive behaviour towards humans leads to their apprehension to shelters, where they tend to stay permanently. This study aimed to determine if unsocialized stray dogs could be rehabilitated and develop the social skills needed for adoption. Six unsocialized stray dogs (Group Stray) and 12 socialized dogs (C1: Control Group 1, n=6; C2: Control Group 2, n=6) housed in a shelter were selected. Stray and C2 dogs went through two training phases: social rehabilitation towards humans and le

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Sörensen, Ida. "Meerkats (Suricata suricatta) are able to detect hidden food using olfactory cues." Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-151238.

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Meerkats are known to strongly rely on chemical communication in social contexts. However, little is known about their use of the sense of smell in food detection and selection. The aim of the present study was therefore to assess whether meerkats are able to (1) detect hidden food using olfactory cues, (2) distinguish the odour of real food from a single food odour component, and (3) build an association between the odour of real food and a novel odour. I employed the buried food test, widely used with rodents to assess basic olfactory abilities, designed to take advantage of the propensity o

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Lindroth, Linnéa. "The relationship between corticosterone and personality in red junglefowl." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166675.

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Stress cannot be fully avoided in an animal´s life, and the way that animals handle stress can be crucial for their health. Coping styles in animals are describing consistent sets of behaviour and physiological stress responses. Two forms of coping are typically described; a more proactive type that is more bold, active, and aggressive, and, in contrast, a less active, more shy reactive type. Coping styles can be used to learn how animals react to stress, and thus improve our handling of stress in captive animals. To investigate the existence of the reactive-proactive coping styles in the red

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Olby, Sara. "Fodertillgång och stereotypa beteenden under natten hos Asiatisk elefant (Elephas maximus)." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69572.

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Animals in zoos live in more barren environments than their conspecifics in nature. In nature, elephants spend more than 75 % of the day foraging and have been observed lying down two hours during night. Stereotypies are common in many different species in zoos. Stereotypic behaviors may constitute up to 50 % of the daily activity budget of zoo elephants. Modern zoos try to reduce stereotypic behaviors by means of environmental enrichment. Three elephant cows at Kolmårdens Djurpark were observed during night to map their nocturnal behaviors and see how they changed with feeding enrichment. The

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Elebring, Viktoria. "Vad skiljer domesticerade värphöns från de röda djungelhönsen (Gallus gallus) i återhämtningsprocessen efter en standardiserad stressupplevelse? : En studie med ett didaktiskt perspektiv." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70716.

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Tidigare studier har visat att domesticerade höns påvisar en lägre nivå av rädsla jämfört med förfadern, de röda djungelhönsen. I denna studie testades 18 domesticerade White Leghorn (WL) och 18 röda djungelhöns (RJF). Målet med studien var att studera återhämtningen för de båda raserna vid en standardiserad stressupplevelse. Försöket gick ut på att hönsen vistades i enskilda burar och blev efter ett dygn utsatta av en akut stress. Därefter startades observationerna omedelbart för att se när hönsen återhämtade sig och återigen började visa naturliga beteenden. Utifrån alla hönsens resultat ber

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