English
español
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10261/65215
Share/Impact:
Statistics |
![]() ![]() ![]() |
|
|
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |||
|
Title: | Temperature-induced changes of growth and survival in the early development of the seahorse Hippocampus guttulatus |
Authors: | Planas, Miguel ![]() ![]() ![]() ![]() |
Keywords: | Effective day-degrees Growth Hippocampus guttulatus Seahorse Survival Temperature |
Issue Date: | 2012 |
Publisher: | Elsevier |
Citation: | Journal of Experimental Marine Biology and Ecology 438(30): 154-162 (2012) |
Abstract: | The effect of temperature (15, 18 and 21 °C) on the early development of the long-snouted seahorse Hippocampus guttulatus were analysed, both under feeding (until day 30 post partum) and starving conditions. Fed and starving seahorses maintained at 15 °C grew at suboptimal conditions. At this temperature, mortalities started earlier and the swimming activity was reduced. In fed juveniles, final survivals (21.1, 85.9 and 81.1% at 15, 18 and 21 °C, respectively) and wet body mass (14.7, 51.9 and 106.43 mg at 15, 18 and 21 °C, respectively) were significantly different. The dependency of daily weight specific growth rate (G; % day− 1) on temperature (T; °C) was explained by the function: G = − 32.905 + 2.8079 T − 0.00166 T3. Three development scales were compared for temperature-dependency: chronological time (days), day-degrees (D°) and effective day degrees (D°eff). It was demonstrated, within a viable temperature range, the suitability of D°eff as a temperature-independent scale to quantify growth in feeding juveniles but not in starving conditions. Seahorse wet weight was modelled as a function of time scales and temperature according to a modification of the Gompertz model. Growth models for single temperatures in the range of 14–26 °C were constructed. D°eff was the only scale that allowed a good temperature-independent fitting of seahorse weight (W; mg) in a unique equation: W = 7.409 − 0.0555 D°eff + 0.0037 D°eff2 − 0.000006 D°eff3. Biological, ecological and biogeographic implications of temperature in the early development of the viviparous fish H. guttulatus are discussed. Finally, from a practical point of view, temperatures of 19–20 °C are recommended for the rearing of this species in captivity |
Description: | 9 páginas, 6 figuras, 2 tablas |
Publisher version (URL): | http://dx.doi.org/10.1016/j.jembe.2012.10.003 |
URI: | http://hdl.handle.net/10261/65215 |
DOI: | 10.1016/j.jembe.2012.10.003 |
ISSN: | 0022-0981 |
Appears in Collections: | (IIM) Artículos |
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
Review this work
Related articles:
WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.