Search for dissertations about: "predator experience"

Showing result 1 - 5 of 11 swedish dissertations containing the words predator experience.

  1. 1. Predator-prey interactions in freshwater systems: The importance of chemical communication

    University dissertation from Kajsa Åbjörnsson, Limnology, Ecology Building, S-223 62 Lund, Sweden

    Author : Kajsa Åbjörnsson; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; marine biology; aquatic ecology; limnology; Marinbiologi; limnologi; akvatisk ekologi; Ecology; Ekologi; Hydrobiology; trophic cascades; non-lethal effects; benefits; costs; heredity; predator experience; alarmsubstances; dietary cues; amphibian larvae; invertebrates; visibility; fish; behaviour; Predator-prey; chemical cues;

    Abstract : Predator released chemical cues provide a valuable source of information to prey organisms that can be used to alter their behaviour in order to reduce predation risk. In this thesis, I have examined under what circumstances chemical cues may be used by prey, and if prey discriminate between different cues. READ MORE

  2. 2. Evolution of Mimicry and Aposematism Explained: Salient Traits and Predator Psychology

    University dissertation from Stockholm : Department of Zoology, Stockholm University

    Author : Baharan Kazemi; Olof Leimar; Gabriella Gamberale-Stille; Mike Speed; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; imperfect mimicry; mimicry evolution; predator learning; discrimination; generalization; salience; overshadowing; aposematism; warning signal evolution; generalization bias; peak shift; etologi; Ethology;

    Abstract : Aposematic species have evolved conspicuous warning signals, such as bright colors and striking patterns, to deter predators. Some edible and harmless species take advantage of this deterrent effect by mimicking their appearance. Mimicry is a great example of how natural selection produces remarkable adaptations. READ MORE

  3. 3. Why and how brain size evolves Sociality, predation and allometry

    University dissertation from Stockholm : Department of Zoology, Stockholm University

    Author : Wouter van der Bijl; Niclas Kolm; Joah Madden; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; brain size; brain size evolution; encephalization; predation; predator inspection; sociality; animal contest; constraint; etologi; Ethology;

    Abstract : The evolution of the vertebrate brain has remained a topic of intense interest from biologists over many decades. Evolutionary biologists have seen it as an intriguing example of how the size and structure of a trait evolves across large phylogenies and under body size constraints, with both large shifts in deep evolutionary time and continuous smaller scale adaptation. READ MORE

  4. 4. Sampling visual space: topography, colour vision and visually guided predator avoidance in fiddler crabs (Uca vomeris)

    University dissertation from Research School of Biological Sciences, The Australian National University

    Author : Jochen Smolka; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Many animals use vision to guide their behaviour and to collect relevant information about their environment. The diversity of visual environments and of visually guided tasks has led to a large variety of specialisations of eyes and visual systems. READ MORE

  5. 5. Behaviour under predation risk - antipredator strategies, behavioural syndromes and sex-specific responses in aquatic prey

    University dissertation from Animal Ecology

    Author : Sanna Harris; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phenotypic integration; Poecilia reticulata; Asellus aquaticus; behavioural syndromes; chemical cues; predation; antipredator behaviour;

    Abstract : In many natural ecosystems, predation is well recognized as a strong evolutionary force, and predator-mediated selection has been demonstrated to induce changes in prey morphology, life history and behaviour. In my thesis, I have focused on behavioural responses in aquatic prey under the risk of predation. READ MORE