Avancerad sökning

Hittade 4 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Risk assessment and contest behaviour in the Cichlid fish Nannacara anomala

   Författare :Olle Brick; Felicity A. Huntingford; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; zoologi; Zoology;

   Sammanfattning : The risk of predation is an important factor for our understanding of animal behaviour in general. This thesis investigates the influence of predation risk on fighting behaviour in the cichlid fish Nannacara anomala. LÄS MER

3. 2. Morphological and Behavioural Differentiation in a Pipefish

   Författare :Sarah Robinson-Wolrath; Anders Berglund; Mats Björklund; Felicity Huntingford; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; population differentiation; phenotypic plasticity; mate choice; pipefish; video playback; Biologi; Biology; Biologi;

   Sammanfattning : A central goal of evolutionary biology is to understand the processes responsible for morphological, genetic and behavioural differentiation between sexes and among geographically distinct populations. Perhaps the most significant processes are genetic drift, natural selection, phenotypic plasticity and sexual selection. LÄS MER

4. 3. Stress Coping Strategies in Rainbow Trout (Oncorhynchus mykiss)

   Författare :Joachim Schjolden; Svante Winberg; Felicity Huntingford; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Salmonid fish; Stress coping; Serotonin; Cortisol; Catecholamines; Monoaminoxidase; Tryptophan; Monoamines; Behaviour; Stress; Biologi; Biology; Biologi;

   Sammanfattning : Animals show a great variety in physiological and behavioural responses to stressors. These responses are often bimodally distributed within populations and show consistency on an individual level over time and across situations, which in terrestrial vertebrates have been identified as proactive and reactive stress coping strategies. LÄS MER

5. 4. Behaviour and metabolic rates of brown trout and Atlantic salmon : Influence of food, environment and social interactions

   Författare :Linnea Lans; Larry Greenberg; Eva Bergman; Felicity Huntingford; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Salmo trutta; Salmo salar; behaviour; metabolic rates; Biology; Biologi;

   Sammanfattning : For Atlantic salmon (Salmo salar) and brown trout (Salmo trutta), the decision to migrate or when to migrate is believed to be influenced by the individual’s metabolic rate (MR) relative its food intake. As MR was expected to be related to behaviour, the potential links between behaviour and metabolic costs was studied. LÄS MER