Repositorio Atenea de la Facultad de Ciencias, UNAM >
Repositorio Ciencias >
FACULTAD DE CIENCIAS >
Biología >
Departamento de Ecología y Recursos Naturales >
Departamento de Ecología y Recursos Naturales >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/11154/2798
|
Title: | effect of variation in photoperiod and light intensity on oxygen consumption, lactate concentration and behavior in crayfish procambarus clarkii and procambarus digueti |
Authors: | Castanon-Cervantes, O Bosques-Tistler, T Fernandez-Rivera-Rio, L Fanjul, ML Prieto, J |
Issue Date: | 1998 |
Abstract: | The effects of light intensity and duration on metabolic and behavioral parameters of two species of crayfish, Procambarus clarkii and Procambarus digueti, were studied. Sixty animals of each species were submitted to high irradiance conditions of two different photoperiod lengths, one normal light/dark (LD) 12:12 and one extreme LD 20:4 for 2 weeks. Hemolymph, lactate and oxygen consumption were determined throughout the experimental period. Simultaneously in 18 additional animals of each species, motor activity was individually recorded under the same control and experimental conditions. Both species showed a decrease in oxygen uptake and an increase in hemolymph lactate concentration. The statistical significance of this finding was higher for LD 20:4. This extreme condition evoked a significant decrease of motor activity in P. clarkii and a high mortality rate in P, digueti. P. digueti did not survive after the experiment, whereas P. clarkii survived and adapted to the laboratory conditions. Changes in metabolic and behavioral parameters could indicate different adaptation abilities in these species. (C) 1998 Elsevier Science Inc. |
URI: | http://hdl.handle.net/11154/2798 |
ISSN: | 1095-6433 |
Appears in Collections: | Departamento de Ecología y Recursos Naturales
|
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.
|