Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad de Costa Rica
2005
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| _version_ | 1876475224011046912 |
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| author | B. Peña-Mendoza |
| author_facet | B. Peña-Mendoza |
| contents | Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico B. Peña-Mendoza J.L. Gómez-Márquez I.H. Salgado-Ugarte D. Ramírez-Noguera Biología fecundity Reproduction gonadosomatic index hepatosomatic index Oreochromis niloticus The reproductive season of tilapia was studied by monthly samplings at Emiliano Zapata dam, Morelos State, Mexico. From February 1999 through February 2000 a sample of 50 fish was taken from the commercial catch (castnet, 6.5 cm of mesh size). The observed sex ratio was 1:1.29 (females:males) (²=10.26; p<0.05). The tilapia reached maturity at 151.3 mm (females) and 152.0 mm (males) of total length. Rainy (August) and dry (February) seasons were determined as the breeding period. Fecundity variation was better correlated with length (r=0.7473; p<0.002) than with weight (r=0.7395; p<0.002). The fecundity ranged between 243 and 847 oocytes per fish, with egg diameter from 300 to 3 700 µm. Intensive breeding activity in August and February coincide with phytoplankton biomass increase. Rev. Biol. Trop. 53(3-4): 515-522. Epub 2005 Oct 3. 2005 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44918947017 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3-4 Vol.53 |
| format | Artículo científico |
| id | redalyc_44918947017 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico B. Peña-Mendoza Biología fecundity Reproduction gonadosomatic index hepatosomatic index Oreochromis niloticus Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico B. Peña-Mendoza J.L. Gómez-Márquez I.H. Salgado-Ugarte D. Ramírez-Noguera Biología fecundity Reproduction gonadosomatic index hepatosomatic index Oreochromis niloticus The reproductive season of tilapia was studied by monthly samplings at Emiliano Zapata dam, Morelos State, Mexico. From February 1999 through February 2000 a sample of 50 fish was taken from the commercial catch (castnet, 6.5 cm of mesh size). The observed sex ratio was 1:1.29 (females:males) (²=10.26; p<0.05). The tilapia reached maturity at 151.3 mm (females) and 152.0 mm (males) of total length. Rainy (August) and dry (February) seasons were determined as the breeding period. Fecundity variation was better correlated with length (r=0.7473; p<0.002) than with weight (r=0.7395; p<0.002). The fecundity ranged between 243 and 847 oocytes per fish, with egg diameter from 300 to 3 700 µm. Intensive breeding activity in August and February coincide with phytoplankton biomass increase. Rev. Biol. Trop. 53(3-4): 515-522. Epub 2005 Oct 3. 2005 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44918947017 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3-4 Vol.53 |
| title | Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico |
| topic | Biología fecundity Reproduction gonadosomatic index hepatosomatic index Oreochromis niloticus |
| url | https://www.redalyc.org/articulo.oa?id=44918947017 |