Essays about: "prey choice"

Showing result 1 - 5 of 21 essays containing the words prey choice.

1. 1. Carabids as weed seed control agent : impact of soil cultivation on carabid weed seed regulation

   University essay from SLU/Dept. of Crop Production Ecology

   Author : Ellen Dahlgren; [2023]
   Keywords : weed seed predation; weed seed bank regulation; weed seed predation strength; seed predation strength; carabid beetles; tillage; piecewise structural equation model;

   Abstract : As weed seed predators, carabid beetles can regulate the weed seed bank within agricultural fields. Little is anyhow known about how weed seed bank regulation by carabids is affected by different tillage treatments with decreasing intensity, why this was here examined. READ MORE

3. 2. Differences in velocity between the sexes and stages of courtship in a dance fly

   University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Author : Filip Myllyaho; [2022-02-17]
   Keywords : Dansfluga; Hilara maura; höghastighetskamera; partner-val; Dance fly; Hilara maura; high-speed camera; mate choice;

   Abstract : Dance flies (Diptera: Empididae: Empidinae) are famous for their elaborate mating behaviour, which can be broken down to three distinct stages in adults: hunting, swarming, and mating. In many species, males hunt for prey that they present as nuptial gifts to recipient females in swarms, after which the pair will copulate in the air or after landing on nearby vegetation. READ MORE

4. 3. Diversification of predators in multi-trophic communities: A trait-based theoretical approach

   University essay from Lunds universitet/Examensarbeten i bioinformatik

   Author : Julio Antonio Ayala Lopez; [2022]
   Keywords : Biology and Life Sciences;

   Abstract : One of the main challenges in ecology and evolutionary biology is to understand how biodiversity emerges and is maintained, given the complexity of ecological and evolutionary processes combined. Understanding how multi-trophic interactions occur from a theoretical perspective is highly relevant for our understanding of diversification in complex ecosystems. READ MORE

5. 4. The effects of eutrophication and browning on prey availability and performance of the three-spined stickleback (Gasterosteus aculeatus)

   University essay from SLU/Dept. Of Aquatic Resources

   Author : Olivia Bell; [2021]
   Keywords : Baltic Sea; benthic habitats; body growth; climate change; coastal areas; diet; fish; stickleback; zooplankton;

   Abstract : Shallow coastal areas often have high productivity and diversity, in part due to the high availability of light and nutrients. At the same time, they are exposed to multiple environmental pressures, such as browning and eutrophication. READ MORE

6. 5. Påverkan av jordbearbetning och pesticider på abundans och födoval hos jordlöpare

   University essay from SLU/Dept. of Ecology

   Author : Ellen Dahlgren; [2021]
   Keywords : jordlöpare; ogräsfröpredation; bladluspredation; alternativ föda; insekticider; herbicider; jordbearbetning;

   Abstract : Syftet med denna uppsats är att undersöka om jordlöpares predationsspecialisering (d’) och aktivitetsdensitet (förekomst) påverkas av jordbearbetning, insekticid- och herbicidanvändning. Jordlöpare har samlats in från höstsådda fält i fyra olika länder i Europa och utifrån deras maginnehåll har ett predationsspecialiseringsindex (d’) för ogräsfrön, bladlöss (Aphidoidea), daggmaskar (Lumbricidae) och hoppstjärtar (Collembola) beräknats. READ MORE