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| 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 |
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| TOMBARI,ANDREA D; VOLPEDO,ALEJANDRA V; ECHEVERRÍA,DINORAH D. |
| Se describió el desarrollo del otolito Sagitta de juveniles y adultos de Odontesthes argentinensis procedentes de Punta Rasa (36°22' S) y Miramar (38°16' S) y de Odontesthes bonariensis de la Laguna de Chascomús (35° 36' S). Se estudió, la morfología de las sagittae de ambas especies, analizando cuatro grupos morfológicos para O. argentinensis (I: 75-120 mm, II: 130-220 mm, III: 230-270 y IV: 280-320 mm) y tres grupos morfológicos para O. bonariensis (I: 80-120 mm, II: 130-220 y III: 230-320 mm). Las características morfológicas comunes a la sagitta, de ambas especies, en los grupos estudiados son: presencia de sulcus, depresión areal dorsal en la cara medial, cara lateral con estrías y la presencia de un punto culminante en el borde dorsal. En la sagitta... |
| Tipo: Journal article |
Palavras-chave: Morfología; Sagitta; Odontesthes; Atherinopsidae. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000400003 |
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| Pessanha,André Luiz Machado; Araújo,Francisco Gerson. |
| The silverside, Atherinella brasiliensis (Quoy & Gaimard, 1824), a resident species of the shallows of bays, estuaries and coastal lagoons, was studied during two annual cycles, using beach seines (July 1996 to June 1998), in the continental margin of the Sepetiba Bay, aiming to assess recruitment and distribution patterns. A wide recruitment period, with young-of-the-year appearing from early spring to early autumn, was shown, with peaks of juveniles (Total Length-LT = 10-30 mm) being recorded in two periods of the year; one in November and another in March. The highest abundances, of both juvenile and adults, were recorded in Coroa Grande and Itacuruçá, sites located in the outer Bay, during the whole summer, with significant differences were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atherinopsidae; Silverside; Distribuition; Sepetiba Bay. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400021 |
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