Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus

The effect of temperature on survival, growth and reproductive parameters of Cherax quadricarinatus from a stage of early sexual differentiation to a stage of sexual maturity was investigated. Growth performance was expressed as specific growth rate (SGR) and growth increment (GI), while reproductiv...

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Autores principales: Tropea, C., Piazza, Y., Greco, L.S.L.
Formato: JOUR
Materias:
Cherax quadricarinatus
Gonad development
Growth
Reproductive parameters
Survival
Temperature
aquaculture production
crayfish
crustacean culture
freshwater environment
growth response
reproductive health
reproductive productivity
sexual maturity
spawning
survival
temperature effect
Astacoidea
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00448486_v302_n1-2_p49_Tropea
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00448486_v302_n1-2_p49_Tropea
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spelling todo:paper_00448486_v302_n1-2_p49_Tropea2023-10-03T14:51:50Z Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus Tropea, C. Piazza, Y. Greco, L.S.L. Cherax quadricarinatus Gonad development Growth Reproductive parameters Survival Temperature aquaculture production crayfish crustacean culture freshwater environment growth response reproductive health reproductive productivity sexual maturity spawning survival temperature effect Astacoidea Cherax quadricarinatus The effect of temperature on survival, growth and reproductive parameters of Cherax quadricarinatus from a stage of early sexual differentiation to a stage of sexual maturity was investigated. Growth performance was expressed as specific growth rate (SGR) and growth increment (GI), while reproductive performance was evaluated in terms of the gonadosomatic index (GSI), mean oocyte diameter (MOD), proportion of mature vs. immature testicular lobes and structure of the vas deferens. The experiment consisted of males and females exposed separately to two treatments (water temperature at 27 and 30 °C) during a 360-day period. Survival was similar between treatments for each sex and between sexes for each treatment. Female growth, GSI and MOD did not differ between treatments. High temperature induced spawning in at least 20% of females. This treatment negatively affected growth of males, but they showed higher GSI and a greater proportion of mature testicular lobes, thus indicating an accelerated spermatogenesis. At 27 °C, males grew more than females from an approximate size of 15 g, confirming previous results about the differential growth of both sexes. We conclude that the long-term exposure to 30 °C is favorable for ovary maturation and spawning in females, but it clearly affects male somatic growth and consequently, the yields of culture. Both results are especially useful for the species culture in tropical countries. The effect of this water temperature on male reproductive performance deserves further research. © 2010 Elsevier B.V. All rights reserved. Fil:Tropea, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Piazza, Y. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00448486_v302_n1-2_p49_Tropea
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cherax quadricarinatus
Gonad development
Growth
Reproductive parameters
Survival
Temperature
aquaculture production
crayfish
crustacean culture
freshwater environment
growth response
reproductive health
reproductive productivity
sexual maturity
spawning
survival
temperature effect
Astacoidea
Cherax quadricarinatus
spellingShingle Cherax quadricarinatus
Gonad development
Growth
Reproductive parameters
Survival
Temperature
aquaculture production
crayfish
crustacean culture
freshwater environment
growth response
reproductive health
reproductive productivity
sexual maturity
spawning
survival
temperature effect
Astacoidea
Cherax quadricarinatus
Tropea, C.
Piazza, Y.
Greco, L.S.L.
Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus
topic_facet Cherax quadricarinatus
Gonad development
Growth
Reproductive parameters
Survival
Temperature
aquaculture production
crayfish
crustacean culture
freshwater environment
growth response
reproductive health
reproductive productivity
sexual maturity
spawning
survival
temperature effect
Astacoidea
Cherax quadricarinatus
description The effect of temperature on survival, growth and reproductive parameters of Cherax quadricarinatus from a stage of early sexual differentiation to a stage of sexual maturity was investigated. Growth performance was expressed as specific growth rate (SGR) and growth increment (GI), while reproductive performance was evaluated in terms of the gonadosomatic index (GSI), mean oocyte diameter (MOD), proportion of mature vs. immature testicular lobes and structure of the vas deferens. The experiment consisted of males and females exposed separately to two treatments (water temperature at 27 and 30 °C) during a 360-day period. Survival was similar between treatments for each sex and between sexes for each treatment. Female growth, GSI and MOD did not differ between treatments. High temperature induced spawning in at least 20% of females. This treatment negatively affected growth of males, but they showed higher GSI and a greater proportion of mature testicular lobes, thus indicating an accelerated spermatogenesis. At 27 °C, males grew more than females from an approximate size of 15 g, confirming previous results about the differential growth of both sexes. We conclude that the long-term exposure to 30 °C is favorable for ovary maturation and spawning in females, but it clearly affects male somatic growth and consequently, the yields of culture. Both results are especially useful for the species culture in tropical countries. The effect of this water temperature on male reproductive performance deserves further research. © 2010 Elsevier B.V. All rights reserved.
format JOUR
author Tropea, C.
Piazza, Y.
Greco, L.S.L.
author_facet Tropea, C.
Piazza, Y.
Greco, L.S.L.
author_sort Tropea, C.
title Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus
title_short Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus
title_full Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus
title_fullStr Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus
title_full_unstemmed Effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish Cherax quadricarinatus
title_sort effect of long-term exposure to high temperature on survival, growth and reproductive parameters of the "redclaw" crayfish cherax quadricarinatus
url http://hdl.handle.net/20.500.12110/paper_00448486_v302_n1-2_p49_Tropea
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AT piazzay effectoflongtermexposuretohightemperatureonsurvivalgrowthandreproductiveparametersoftheredclawcrayfishcheraxquadricarinatus
AT grecolsl effectoflongtermexposuretohightemperatureonsurvivalgrowthandreproductiveparametersoftheredclawcrayfishcheraxquadricarinatus
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