Repositorio Atenea de la Facultad de Ciencias, UNAM >
Repositorio Ciencias >
FACULTAD DE CIENCIAS >
Ciencias >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/11154/2439
|
Title: | Gonadal development, spawning, growth and survival of the crayfish Procambarus llamasi at three different water temperatures |
Authors: | Carmona-Osalde, C Olvera-Novoa, MA Gutierrez-Yurrita, PJ Rodríguez-Serna, M |
Issue Date: | 2004 |
Abstract: | A study was done of the effect of three water temperatures (16, 21 and 26 degreesC on the growth, survival, gonad development and spawning rates of Procambarus ilamasi during a 90-day trial. Juveniles (<40 mm total length) were stocked at 76 org /m(2) density, and at a 1:1 M/F ratio. Growth improved in all treatments with increasing temperature, showing significant differences between sexes. Males grew more than females and achieved larger sizes with statistical differences (p<0.05) between treatments. Survival rate exhibited a negative relationship to temperature, with significant differences (p<0.05) between the 16 degreesC treatment and the others, but not between the 21 and 26 degreesC. Survival rate decreased from 90% at 16 degreesC to 42% at 26 degreesC. Ovary development increased as temperature increased. The gonadosomatic and maturation indexes were significantly different (p<0.05) between the 16 degreesC treatment and the others, but not between the 21 and 26 degreesC treatments. Spawning rate exhibited no relationship to temperature, with optimum results (22%) at 21 degreesC. (C) 2004 Elsevier B.V. All rights reserved. |
URI: | http://hdl.handle.net/11154/2439 |
ISSN: | 0044-8486 |
Appears in Collections: | Ciencias
|
Files in This Item:
There are no files associated with this item.
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|