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Rising Temperatures and the Damselfly Shrinkage
Karlstad University, Faculty of Health, Science and Technology (starting 2013).
2023 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Stigande temperaturer och krympande flicksländor (Swedish)
Abstract [en]

Body size governs how temperature affects an organism. As temperature vary on different geographical scales, it mediates activity based on size. How does temperature distribute different sized individuals - and what reproductive fitness follow? This study involves the damselfly Enallagma exsulans and field studies at lake Fayetteville, United States. By measuring body length, temperature, copulatory status, and egg counts, I perform regression analysis to determine the fitness implications of varying temperature. Smaller individuals manage to stay active at higher temperatures, they mate at a higher rate, and they generate more eggs. My study contrasts previous research and highlights both the relevance and complexity of specificity when connecting temperature to fitness. 

Abstract [sv]

Kroppsstorlek styr hur temperatur påverkar en organism. Eftersom temperatur varierar på olika geografiska nivåer möjliggörs aktivitet baserat på storlek. Hur fördelar temperatur individer av olika storlekar – och vilka reproduktiva konsekvenser medför det? Den här studien involverar flicksländan Enallagma exsulans och fältarbete vid sjön Fayetteville, USA. Genom att mäta kroppslängd, temperatur, kopulationsstatus och antal ägg, utför jag regressionsanalys för att utröna fitness-implikationerna av varierande temperatur. Mindre individer förmår vara aktiva vid högre temperaturer, de parar sig till högre grad och de genererar fler ägg. Min studie står i kontrast till tidigare forskning och belyser både relevansen och komplexiteten i specificitet, när temperatur kopplas till fitness

Place, publisher, year, edition, pages
2023. , p. 11
Keywords [en]
Damselfly, Body, Size, Body Size, Temperature, Reproduction, Eggs, Egg, Egg Count
Keywords [sv]
Flicksländor, Kropp, Storlek, Kroppsstorlek, Temperatur, Reproduktion, Ägg, Äggräkning, Antal Ägg
National Category
Ecology
Identifiers
URN: urn:nbn:se:kau:diva-95139OAI: oai:DiVA.org:kau-95139DiVA, id: diva2:1765197
Subject / course
Biology
Educational program
Biology programme, 180 hp
Supervisors
Examiners
Available from: 2023-06-27 Created: 2023-06-09 Last updated: 2023-06-27Bibliographically approved

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Type fulltextMimetype application/pdf

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