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	Provedor de dados Neotropical Ichthyology (2) Autor Cussac,Víctor E. (2) Battini,Miguel A. (1) Chalde,Tomás (1) Crichigno,Sonia A. (1) Fernández,Daniel A. (1) Somoza,Gustavo M. (1) Mais... Palavra-chave Atherinopsidae (2) Development (1) Feeding (1) Fin fold (1) Larvae (1) Morphometry (1) Odontesthes hatcheri (1) Sexual determination (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2012 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Early morphological variation and induction of phenotypic plasticity in Patagonian pejerrey Neotropical Ichthyology Crichigno,Sonia A.; Battini,Miguel A.; Cussac,Víctor E.. The aim of this work was to study two aspects of phenotypic plasticity in the Patagonian pejerrey Odontesthes hatcheri (Teleostei: Atherinopsidae) the dependence of the early morphology on developmental time and temperature, and the induction of morphological changes by controlled feeding in juveniles. Newly hatched free embryos, incubated at two different temperatures (13 and 18oC), and juveniles were used for the study and induction of phenotypic plasticity. Body and head shapes were analyzed with geometric morphometrics and linear measurements. Our results showed that shape variation at hatching was related to the bending of the embryo head on the yolk sac, increasing the head-trunk angle due to progressive straightening of the embryo. The head-trunk... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atherinopsidae; Development; Feeding; Morphometry; Odontesthes hatcheri. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200009 The effect of rearing temperature in larval development of pejerrey, Odontesthes bonariensis: morphological indicators of development Neotropical Ichthyology Chalde,Tomás; Fernández,Daniel A.; Cussac,Víctor E.; Somoza,Gustavo M.. It is well known that in pejerrey water temperature not only affects growth rates but also directs the sexual differentiation process. This fact rise the question of how different the development of pejerrey larvae of the same age is when reared at different temperatures. A description of developmental stages for the embryonic and larval periods of the pejerrey, Odontesthes bonariensis, and the influence of rearing temperature on larval development are presented. Then, larval development was studied at three rearing temperatures, and changes in general morphology, fin morphology, and caudal fin structure have been taken into consideration within the thermal range involved in the temperature sex determination of this species. Fin fold reabsorption, caudal... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atherinopsidae; Fin fold; Larvae; Sexual determination. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400006 Registros recuperados: 2 Primeira ... 1 ... Última

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