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Carcinicultura de agua doce: tecnologia para a producao de camaroes
1998
Valenti, W.C. (ed.) | Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renovaveis, Brasilia (Brazil) por | Fundacao de Amparo a Pesquisa do Estado, Sao Paulo (Brazil) por
Elementos de biologia de peixes e de qualidade de agua
1986
Godoy, M.P. de | Centrais Eletricas do Sul do Brasil, S.A., Florianopolis (Brazil) por
Bibliografia sobre los peces de agua dulce de America Latina
1979
Ziesler, R. | FAO, Rome (Italy). Fisheries Dept. eng | Commission for Inland Fisheries of Latin America eng 19 Mar 1979 Sess. 1 Mar del Plata (Argentina)
2832 ref.
Показать больше [+] Меньше [-]Migraciones de peces de agua dulce en America Latina: algunos comentarios.
1985
Petrere Junior M.
Reproductive biology of the freshwater drum Aplodinotus grunniens in Tabasco, Mexico/Biología reproductiva del tambor de agua dulce Aplodinotus grunniens en Tabasco, México Полный текст
2017
Raúl Enrique Hernández-Gómez | Wilfrido Miguel Contreras-Sánchez | Martha Alicia Perera-García
Aplodinotus grunniens supports a sustained artisanal shery in the Usumacinta River; however, there are few studies to understand the population dynamics of the species. Relevant aspects of the reproductive biology were documented over an annual cycle, using 593 specimens captured with seine nets. The results indicate that females had a median TL of 32.05 cm, while males had 29.71 cm. The estimated sex ratio was 1.2:1 (males: females). The length-weight relationship showed signicant dierence between sexes, observing an allometric-type growth represented by TW=0.0013(TL)3.5985 with 89.17 % of the data variability explained by the model. Gonadosomatic index (GSI) in females was higher in September (4.29), with males displaying a higher GSI in October (1.02). The highest HSI increase in females was observed in October (1.0). The estimated relative fecundity was 138.74 (± 74.30) oocytes/g of female weight. The macroscopic analysis of gonads indicates that the highest frequency of mature females occurs in June (75 %), while in males it takes place in March and June (35 %). The estimated L50 for females was 31.89 cm (TL) and 28.78 cm (TL) for males. Though A. grunniens reproduces throughout the year, reproductive peaks coincide with the period when the river level decreases, and shing increases considerably. Hence, preventive measures must be applied in regards to the size of the species at capture and the exploitation volumes of this resource.
Показать больше [+] Меньше [-]Influencia del Dimecron en la supervivencia de la langosta panulirus argus en relacion con la circulacion de agua sobre la plataforma de Cuba
1972
RAMIRO G. ME | SUAREZ A. G | TAPANES D. JJ
