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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todo:paper_09528369_v252_n4_p481_Meijide2023-10-03T15:50:47Z Embryonic and larval development of a substrate-brooding cichlid Cichlasoma dimerus (Heckel, 1840) under laboratory conditions Meijide, F.J. Guerrero, G.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, F.J. Guerrero, G.A. 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. |
| format |
JOUR |
| author |
Meijide, F.J. Guerrero, G.A. |
| author_facet |
Meijide, F.J. Guerrero, G.A. |
| author_sort |
Meijide, F.J. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_09528369_v252_n4_p481_Meijide |
| work_keys_str_mv |
AT meijidefj embryonicandlarvaldevelopmentofasubstratebroodingcichlidcichlasomadimerusheckel1840underlaboratoryconditions AT guerreroga embryonicandlarvaldevelopmentofasubstratebroodingcichlidcichlasomadimerusheckel1840underlaboratoryconditions |
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1782024218888634368 |