کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4524075 | 1625424 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A note on pre-spawning maternal cortisol exposure in farmed Atlantic salmon and its impact on the behaviour of offspring in response to a novel environment
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
This study was designed to assess whether pre-spawning maternal cortisol administration and an additional stressor, here modelled by mild hyperthermia experienced during incubation, affected the behavioural responses of farmed Atlantic salmon (Salmo salar) offspring when exposed to a novel environment. Mature females were injected prior to stripping with 0, 50 or 100 mg/kg cortisol. After fertilization the eggs were kept at incubation temperatures of either 8 or 10 °C. Four months after hatching, the fish were introduced to a novel environment, i.e. an aquarium (38 l). In each trial two individuals originating from different exposure groups were video recorded and their activity (number of turns, time spent not swimming, time spent at the bottom) and feeding behaviour were measured. Maternal cortisol increased time spent non-swimming and also time spent at the bottom, while cortisol and temperature together additionally affected number of turns. To the best of our knowledge this study is the first in fish to demonstrate a possible link between the maternal endocrinological state at spawning and the offspring's behavioural reactivity to novel situations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Animal Behaviour Science - Volume 110, Issues 3â4, April 2008, Pages 404-409
Journal: Applied Animal Behaviour Science - Volume 110, Issues 3â4, April 2008, Pages 404-409
نویسندگان
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sa Maria Espmark, Marit Skog Eriksen, Ragnar Salte, Bjarne Olai Braastad, Morten Bakken,