Sökning: "Poecilia reticulata"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Poecilia reticulata.

  1. 1. Behaviour and morphology in wild guppies from populations with high and low predation pressure in Trinidad

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :William Harry Ashworth; [2020]
    Nyckelord :behavioural ecology; colouration; Poecilia reticulata; sexual ornament;

    Sammanfattning : Behaviour and morphology can vary significantly within a species as a result of the predation pressure individuals are exposed to. Wild populations of guppies (Poecilia reticulata) exposed to high and low predation can be found in the streams of northern Trinidad, providing a useful study system for investigating how behaviour and morphology are affected by predation. LÄS MER

  3. 2. Social learning and brain size in the guppy (Poecilia reticulata)

    Magister-uppsats, Stockholms universitet/Zoologiska institutionen

    Författare :Erika Fernlund Isaksson; [2018]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 3. Social learning and brain size in the guppy (Poecilia reticulata)

    Magister-uppsats, Stockholms universitet/Zoologiska institutionen

    Författare :Erika Fernlund Isaksson; [2018]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 4. Brain size does not affect reproductive behaviour in male guppies (Poecilia reticulata)

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Simon Eckerström Liedholm; [2014]
    Nyckelord :brain size evolution; cognition; reproductive behaviour; alternative mating tactics; guppy; Poecilia reticulata; evolution av hjärnstorlek; kognition; parningsbeteende; alternativa parningsstrategier; guppy; Poecilia reticulata;

    Sammanfattning : The processes and mechanisms that govern brain size evolution remain a widely discussed topic in evolutionary biology. How relative brain size relates to animal behaviour and cognition is even more controversial. Recent comparative and experimental studies have shown a positive relationship between relative brain size and complexity of behaviour. LÄS MER

  7. 5. Artificial selection for large and small relative brain size in guppies (Poecilia reticulata) results in differences in cognitive ability

    Kandidat-uppsats, Institutionen för biologisk grundutbildning; Zooekologi

    Författare :Andreas Bundsen; [2012]
    Nyckelord :cognition; guppy; artificial selection; brain size;

    Sammanfattning : Vertebrate brain size is remarkably variable at all taxonomic levels. Brains of mammals forexample, range from 0.1 gram in small bats (Chiroptera) to about 8-9 kilos in Sperm whales(Physeter macrocephalus). LÄS MER