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Registros recuperados: 501 | |
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Kullander,Sven O; Ferreira,Efrem J. G.. |
Apistogramma angayuara is described from the rio Trombetas close to the cachoeira Vira Mundo where it is found in association with rapids. It is assigned to the A. pertensis species group, distinguished by the following characters in combination: three prominent stripes composed of dark spots along the sides of the abdomen, 2 vs. 3 postlachrymal infraorbital pores, 5 vs. 4 dentary pores, low dorsal fin in adult males, and presence of a caudal spot. It is the smallest species of Apistogramma reported so far, with the largest male 24.7 mm SL and the largest female 22.7 mm SL, and the first cichlid species found with a significant proportion of rhizopods in the stomach content. Apistogramma salpinction is described from lentic habitats at the margin of road... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Fish; Microphagy; Neotropical; Rheophily; Taxonomy. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300003 |
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Gutiérrez Delgado, A. R.; Alvarez Cruz, A.; Frías, M. del P.; Alfonso, I.. |
Esta investigación muestra los efectos del evento ENOS 1997-1998 en la temperatura superficial del mar (TSM) y en la abundancia de larvas de peces de las familias Thunnidae, Carangidae y Lutjanidae en las aguas oceánicas adyacentes a Cuba. La data histórica está integrada por 37 cruceros oceanográficos realizados entre los años 1966 y 1999. De ellos, 3 cruceros fueron realizados bajo el efecto del ENOS 1997-1998 en los meses de diciembre de 1997, septiembre de 1998 y mayo de 1999. También fue utilizada la serie de TSM desarrollada en el Centro Meteorológico Nacional de la NOAA para la cuadrícula de Cuba 23º-24ºN y 74º-85ºO entre los años 1966 y 1999. Las anomalías térmicas de la TSM, durante septiembre de 1998, provocaron un aumento tanto de la... |
Tipo: Book |
Palavras-chave: Temperature; Water levels; Spawning; Pelagic fish; Fish. |
Ano: 2008 |
URL: http://hdl.handle.net/1834/5789 |
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Turki, O.; M' Hetli, M.; Kraiem, M.M.; Chriki, A.. |
Dans le but de caractériser phénotypiquement et biologiquement la population de sandre (Sander lucioperca (L, 1758)), et de détecter une éventuelle variabilité entre les sexes, une étude des variables méristiques et morphométriques ainsi que la croissance, a concerné 133 mâles et 166 femelles issus de la retenue de barrage de Nebhana. Le choix des variables méristiques et morphométriques a été décelé à partir de travaux bibliographiques montrant un taux important de variabilité chez les poissons marins et d'eau douce. Ainsi 9 caractères méristiques et 23 variables morphométriques ont été retenus. Les résultats ont montré une invariance des caractères méristiques entre les mâles et les femelles. Quant aux rapports morphométriques, les mâles diffèrent des... |
Tipo: Journal Contribution |
Palavras-chave: Fish; Fish; Http://aims.fao.org/aos/agrovoc/c_15903. |
Ano: 2009 |
URL: http://hdl.handle.net/1834/3788 |
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Aggrey-Fynn, J.; Sackey-Mensah, R.. |
The diversity and relative species abundance of fisheries resources were studied from Winneba to Cape Coast on the central coast of Ghana during December 2007 to May 2009. Samples of organisms were collected at random from beach seine landings during the study period. The fishes were counted and identified to the family and species levels. Ecological indices such as Shannon-Wiener diversity index, equitability and Sørenson’s similarity index were used to analyse the data. Specimens from Winneba, Saltpond and Cape Coast comprise 56 species belonging to 30 families. Carangidae, Haemulidae, Clupeidae and Sciaenidae were some of the families, where key species occurred during the study. The relative abundance of key organisms in the beach seine landings... |
Tipo: Report |
Palavras-chave: Fish; Biodiversity; Relative abundance; Coastal fisheries; Carangidae; Haemulidae; Sciaenidae; Marine resources. |
Ano: 2012 |
URL: http://hdl.handle.net/1834/5323 |
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Registros recuperados: 501 | |
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