Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)

Survival and growth of juveniles of the Australian freshwater crayfish Cherax quadricarinatus were evaluated in aquaria with four different substrates covering their bottom. The four substrates were plastic mesh, small stones, fine sand and bare glass without cover (control group). Two size classes...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Viau, V.E., Rodríguez, E.M.
Formato:	JOUR
Materias:	Cherax quadricarinatus Crayfish Growth Parastacidae Substrate preference acclimation body mass crayfish experimental study growth rate juvenile substrate survival Animalia Astacoidea
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_09676120_v18_n5_p717_Viau
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_09676120_v18_n5_p717_Viau
record_format	dspace
spelling	todo:paper_09676120_v18_n5_p717_Viau2023-10-03T15:55:09Z Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae) Viau, V.E. Rodríguez, E.M. Cherax quadricarinatus Crayfish Growth Parastacidae Substrate preference acclimation body mass crayfish experimental study growth rate juvenile substrate survival Animalia Astacoidea Cherax quadricarinatus Parastacidae Survival and growth of juveniles of the Australian freshwater crayfish Cherax quadricarinatus were evaluated in aquaria with four different substrates covering their bottom. The four substrates were plastic mesh, small stones, fine sand and bare glass without cover (control group). Two size classes of juveniles were evaluated: recently hatched or early (~0.02 g of body weight) and pre-fattening or advanced (~1 g of body weight). A group of twelve early or ten advanced juveniles were placed in each of the 24 aquaria. Each substrate had a total of six aquaria, three containing early juveniles and the other three containing advanced juveniles groups. Each aquarium had an excess small PVC pipes that served as shelters. After 12 weeks, early juveniles raised in small stones or fine sand had a statistically significant heavier body mass than the control group while the advanced juveniles did not show statistically significant differences in body weight. In a second experiment, ten early and ten advanced juveniles were individually placed in a circular glass aquarium divided into four sections each containing one of the same substrates used in the first experiment. Each individual was filmed for 24 h, and the time spent in each compartment was registered. Both sizes of juveniles showed a marked preference for the small stones. This experiment was repeated with animals used in the first experiment and observed the same selection pattern indicating that substrate selection is independent of body mass or previous acclimation to the different substrates. © 2009 Springer Science+Business Media B.V. Fil:Viau, V.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rodríguez, E.M. 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_09676120_v18_n5_p717_Viau
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 Crayfish Growth Parastacidae Substrate preference acclimation body mass crayfish experimental study growth rate juvenile substrate survival Animalia Astacoidea Cherax quadricarinatus Parastacidae
spellingShingle	Cherax quadricarinatus Crayfish Growth Parastacidae Substrate preference acclimation body mass crayfish experimental study growth rate juvenile substrate survival Animalia Astacoidea Cherax quadricarinatus Parastacidae Viau, V.E. Rodríguez, E.M. Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)
topic_facet	Cherax quadricarinatus Crayfish Growth Parastacidae Substrate preference acclimation body mass crayfish experimental study growth rate juvenile substrate survival Animalia Astacoidea Cherax quadricarinatus Parastacidae
description	Survival and growth of juveniles of the Australian freshwater crayfish Cherax quadricarinatus were evaluated in aquaria with four different substrates covering their bottom. The four substrates were plastic mesh, small stones, fine sand and bare glass without cover (control group). Two size classes of juveniles were evaluated: recently hatched or early (~0.02 g of body weight) and pre-fattening or advanced (~1 g of body weight). A group of twelve early or ten advanced juveniles were placed in each of the 24 aquaria. Each substrate had a total of six aquaria, three containing early juveniles and the other three containing advanced juveniles groups. Each aquarium had an excess small PVC pipes that served as shelters. After 12 weeks, early juveniles raised in small stones or fine sand had a statistically significant heavier body mass than the control group while the advanced juveniles did not show statistically significant differences in body weight. In a second experiment, ten early and ten advanced juveniles were individually placed in a circular glass aquarium divided into four sections each containing one of the same substrates used in the first experiment. Each individual was filmed for 24 h, and the time spent in each compartment was registered. Both sizes of juveniles showed a marked preference for the small stones. This experiment was repeated with animals used in the first experiment and observed the same selection pattern indicating that substrate selection is independent of body mass or previous acclimation to the different substrates. © 2009 Springer Science+Business Media B.V.
format	JOUR
author	Viau, V.E. Rodríguez, E.M.
author_facet	Viau, V.E. Rodríguez, E.M.
author_sort	Viau, V.E.
title	Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)
title_short	Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)
title_full	Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)
title_fullStr	Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)
title_full_unstemmed	Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)
title_sort	substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish cherax quadricarinatus (von martens 1868) (decapoda, parastacidae)
url	http://hdl.handle.net/20.500.12110/paper_09676120_v18_n5_p717_Viau
work_keys_str_mv	AT viauve substrateselectionandeffectofdifferentsubstratesonsurvivalandgrowthofjuvenilesofthefreshwatercrayfishcheraxquadricarinatusvonmartens1868decapodaparastacidae AT rodriguezem substrateselectionandeffectofdifferentsubstratesonsurvivalandgrowthofjuvenilesofthefreshwatercrayfishcheraxquadricarinatusvonmartens1868decapodaparastacidae
_version_	1807322472699133952

Substrate selection and effect of different substrates on survival and growth of juveniles of the freshwater crayfish Cherax quadricarinatus (von Martens 1868) (Decapoda, Parastacidae)

Ejemplares similares