Effect of elevated embryonic incubation temperature on the temperature preference of juvenile lake (Coregonus clupeaformis) and round whitefish (Prosopium cylindraceum)

Autor: Harman, Adam
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Druh dokumentu: Diplomová práce
Popis: Lake (Coregonus clupeaformis) and round (Prosopium cylindraceum) whitefish are two species of cold-adapted freshwater fish that spawn in shallow
Thesis
Master of Science (MSc)
Lake and round whitefish are cold-adapted freshwater species that spawn in shallow coastal water in the Laurentian great lakes. Anthropogenic warming from various sources (e.g. climate change, thermal effluent) has been shown to reduce survival of whitefish embryos, but few studies have investigated the effects of elevated embryonic incubation temperatures on surviving juveniles. Fish typically prefer a small range of temperatures (temperature preference) that they will occupy if given a choice, which can be affected by a variety of factors including early life thermal exposure. This thesis shows round whitefish incubated at elevated temperatures (2°C, 6°C) display decreased temperature preference up to 12 months post-hatch, while lake whitefish had similar temperature preference regardless of incubation temperature. Therefore, this thesis provides more evidence that round whitefish are a more thermally sensitive species.
Databáze: Networked Digital Library of Theses & Dissertations
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