Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions

There is a vast literature on the reproductive behaviour of cichlid fishes, most of which describes spawning strategies and parental care. However, descriptive information on the early development of cichlids is scarce. In this study, embryos and larvae of laboratory-reared Cichlasoma dimerus are de...

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Autores principales:	Meijide, Fernando Javier, Guerrero, Graciela Alicia
Publicado:	2000
Materias:	Cichlasoma dimerus Cichlidae Development Perciformes Substrate-brooder cichlid embryonic development larval development Cichlasoma Pisces Vertebrata
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09528369_v252_n4_p481_Meijide http://hdl.handle.net/20.500.12110/paper_09528369_v252_n4_p481_Meijide
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09528369_v252_n4_p481_Meijide
record_format	dspace
spelling	paper:paper_09528369_v252_n4_p481_Meijide2023-06-08T15:55:04Z Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions Meijide, Fernando Javier Guerrero, Graciela Alicia Cichlasoma dimerus Cichlidae Development Perciformes Substrate-brooder cichlid embryonic development larval development Cichlasoma Cichlidae Perciformes Pisces Vertebrata There is a vast literature on the reproductive behaviour of cichlid fishes, most of which describes spawning strategies and parental care. However, descriptive information on the early development of cichlids is scarce. In this study, embryos and larvae of laboratory-reared Cichlasoma dimerus are described. The early ontogeny is documented from oocyte activation until the beginning of the juvenile period. At a water temperature of 25 ±0.5°C and a 12:12 h photoperiod, cleavage is finished in 10 h and the first somites appear at 26 h of development. The larvae hatch during the beginning of the third day and are deposited by both parents in a pit they have dug out in advance. Yolk-sac larvae present three pairs of adhesive glands over the head, these transient larval organs being characteristic of substrate-brooding cichlids. After another 5 days, the fry swim freely and begin to feed exogenously. Since the yolk-sac is not completely reabsorbed until 2 or 3 days later, there is a period of combined endogenous and exogenous food supply. The juvenile stage is reached on the 42nd day from spawning. Fil:Meijide, F.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Guerrero, G.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09528369_v252_n4_p481_Meijide http://hdl.handle.net/20.500.12110/paper_09528369_v252_n4_p481_Meijide
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Cichlasoma dimerus Cichlidae Development Perciformes Substrate-brooder cichlid embryonic development larval development Cichlasoma Cichlidae Perciformes Pisces Vertebrata
spellingShingle	Cichlasoma dimerus Cichlidae Development Perciformes Substrate-brooder cichlid embryonic development larval development Cichlasoma Cichlidae Perciformes Pisces Vertebrata Meijide, Fernando Javier Guerrero, Graciela Alicia Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions
topic_facet	Cichlasoma dimerus Cichlidae Development Perciformes Substrate-brooder cichlid embryonic development larval development Cichlasoma Cichlidae Perciformes Pisces Vertebrata
description	There is a vast literature on the reproductive behaviour of cichlid fishes, most of which describes spawning strategies and parental care. However, descriptive information on the early development of cichlids is scarce. In this study, embryos and larvae of laboratory-reared Cichlasoma dimerus are described. The early ontogeny is documented from oocyte activation until the beginning of the juvenile period. At a water temperature of 25 ±0.5°C and a 12:12 h photoperiod, cleavage is finished in 10 h and the first somites appear at 26 h of development. The larvae hatch during the beginning of the third day and are deposited by both parents in a pit they have dug out in advance. Yolk-sac larvae present three pairs of adhesive glands over the head, these transient larval organs being characteristic of substrate-brooding cichlids. After another 5 days, the fry swim freely and begin to feed exogenously. Since the yolk-sac is not completely reabsorbed until 2 or 3 days later, there is a period of combined endogenous and exogenous food supply. The juvenile stage is reached on the 42nd day from spawning.
author	Meijide, Fernando Javier Guerrero, Graciela Alicia
author_facet	Meijide, Fernando Javier Guerrero, Graciela Alicia
author_sort	Meijide, Fernando Javier
title	Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions
title_short	Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions
title_full	Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions
title_fullStr	Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions
title_full_unstemmed	Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions
title_sort	embryonic and larval development of a substrate-brooding cichlid cichlasoma dimerus (heckel, 1840) under laboratory conditions
publishDate	2000
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09528369_v252_n4_p481_Meijide http://hdl.handle.net/20.500.12110/paper_09528369_v252_n4_p481_Meijide
work_keys_str_mv	AT meijidefernandojavier embryonicandlarvaldevelopmentofasubstratebroodingcichlidcichlasomadimerusheckel1840underlaboratoryconditions AT guerrerogracielaalicia embryonicandlarvaldevelopmentofasubstratebroodingcichlidcichlasomadimerusheckel1840underlaboratoryconditions
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Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions

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