How Temperature-Induced Variation in Musculoskeletal Anatomy Affects Escape Performance and Survival of Zebrafish (Danio rerio)

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How Temperature-Induced Variation in Musculoskeletal Anatomy Affects Escape Performance and Survival of Zebrafish (Danio rerio)

Kerri l. Ackerly [et al.] - Nama Orang;

Fishes are particularly sensitive to the effects of environmental conditions during early development,which can significantly impact adult morphology, performance, and survival. Previous research has highlighted the sensitivity of fishes to the effects of temperature during early development on vertebral number and muscle composition, which are both important determinants of an individual's swimming performance. In this study, we investigated the effect of developmental temperature on vertebral and muscle variation, and the subsequent effect of any varia ion on burst swimming performance in zebrafish (Danio rerio). Following development at a range of temperatures, all individuals were shifted to and maintained at a common temperature before startle responses were recorded and individuals were analyzed for either vertebral number ormuscle composition. Our results indicate that developmental temperature does not significantly affect muscle composition, but can affect an individual's vertebral number, and that individuals with more vertebrae achieved greater displacement and velocities during C-start performance. To determine the ecological importance of this vertebral variation and to identify the potential selective factors behind it, we exposed populations of zebrafish with various vertebral numbers to native predators, needlenose garfish (Xenentodon
cancila). We found that only caudal vertebral number was related to survival, and that survivors had the same caudal vertebral number across developmental temperatures. Overall, this work highlights the importance of including variation in musculoskeletal anatomy when investigating what is driving selection in fishes.

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Judul Seri: J. Exp. Zool.
No. Panggil: -
Penerbit: : Wiley Periodicals., 2015
Deskripsi Fisik: J. Exp. Zool. 325A:25–40
Bahasa: English
ISBN/ISSN: DOI: 10.1002/jez.199
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: -
Subjek: BIOLOGI
Info Detail Spesifik: -
Pernyataan Tanggungjawab: Wati/Agus

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FULL TEXT:How Temperature-Induced Variation in Musculoskeletal Anatomy Affects Escape Performance and Survival of Zebrafish (Danio rerio)

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