Essays about: "female marking"

Showing result 1 - 5 of 8 essays containing the words female marking.

  1. 1. Phenotypic correlates of spawning migration behaviour for roach (Rutilus rutilus) and ide (Leuciscus idus) in the stream Oknebäcken, Sweden.

    University essay from Linnéuniversitetet/Institutionen för biologi och miljö (BOM)

    Author : Emma Lindbladh; Johanna Eriksson; [2020]
    Keywords : Anadromous; cyprinids; diadromous; fish migration; ide; leuciscus idus; migration barriers; PIT-tag; roach; rutilus rutilus; sex ratio; spawning migration; Sweden;

    Abstract : Migration occurs among many animal species for the purpose of, among other things, finding food or to reproduce. Spawning migration is a form of migration that occurs among many fish species where they move to another site for reproduction. The movement can be obstructed by migration barriers like road culverts. READ MORE

  3. 2. Maternal body condition : effect on time of calving, offspring survival and body weight in reindeer

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Caroline Korpinen; [2017]
    Keywords : reindeer; calf; mortality; weight; condition; nutrition; survival; predators;

    Abstract : The reindeer husbandry faces many challenges and one of the most crucial is the high calf mortality. As some reindeer herding districts have their calving grounds based in the forest, they are at high risk of losing a large number of the calves each season to brown bear predation as the bears also rely heavily on the forest as their natural habitat. READ MORE

  4. 3. Järvhonors rörelsemönster kring lyplatsen under lyperioden

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Tove-Mathilda Thomasdotter Myhr; [2015]
    Keywords : järv; rörelsemönster; lya; inventering;

    Abstract : The wolverine is the world’s largest mustelids and is both a carnivore and a scavenger. In Sweden wolverines occur in the mountains and coniferous forests from the northern parts down to south-central Sweden. READ MORE

  5. 4. Dorsal visual cues in German wasp navigation

    University essay from Lunds universitet/Examensarbeten i biologi

    Author : Denis Vaduva; [2015]
    Keywords : Biology and Life Sciences;

    Abstract : The German wasp Vespula germanica is found in the Palaeartic region of the globe. Outside this area, it is highly invasive species. It has an omnivorous diet and is able to hunt other insects and scavenge for food from both natural and anthropogenic sources. READ MORE

  6. 5. Dödlighet hos renkalvar vid kalvning i hägn

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Emil Wikström; [2014]
    Keywords : Ren; Rangifer tarandus; Kalvdödlighet; Rovdjur; Nekrobacillos; Infektionssjukdomsutbrott;

    Abstract : Renen är ett hjortdjur som i Sverige ägs och sköts av samer organiserade i samebyar. För det mesta går renarna fritt och livnär sig på naturligt bete, men samlas ihop vid särskilda tillfällen för exempelvis märkning och slakt. Rennäringen idag är hårt pressad av rovdjurrelaterade förluster i renhjordarna. READ MORE