Age, growth, maturation, and protandric sex reversal in common snook, Centropomus undecimalis, from the east and west coasts of South Florida
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چکیده
Common snook, Centropomus undecimalis, (Perciformes: Centropomidae) are valuable euryhaline fi shes that inhabit tropical and subtropical estuarine systems of the western Atlantic. They are abundant off the east coast of Florida from Cape Canaveral southward around the peninsula to Cedar Key off the west coast. They also inhabit waters off Galveston, Texas, south to Rio de Janeiro, Brazil (Gilmore et al., 1983; Rivas, 1986). They are commercially exploited throughout most of their range, except in Texas and Florida where they traditionally have supported large recreational fi sheries (Matlock and Osburn, 1987). Snook are stenothermic: their northern range is limited by the winter 15oC isotherm (Shafl and and Foote, 1983), similar to the distribution of mangroves which is their principal habitat (Marshall, 1958; Gilmore et al., 1983). Genetic studies of the stock structure suggest that in Florida, east coast and west coast populations are separate stocks (Tringali and Bert, 1996). Anglers target common snook because of their fi ghting ability and culinary value (Tucker et al., 1985; Matlock and Osburn, 1987), and concerns about overfi shing have resulted in a long history of regulation of the fi shery off Florida (Bruger and Haddad, 1986). Size limits were fi rst imposed on the fi shery in 1953, and the sale of common snook in Florida has been prohibited since 1956. In 1994, a management goal was established to maintain a minimum spawning potential ratio (SPR) of 40% for Age, growth, maturation, and protandric sex reversal in common snook, Centropomus undecimalis, from the east and west coasts of South Florida
منابع مشابه
SHORT COMMUNICATION: Effects of salinity on growth and survival of common snook Centropomus undecimalis (Bloch, 1792) larvae
Common snook Centropomus undecimalis, herein referred to as ‘snook’, are a stenothermic estuarine ¢sh found in the tropical and subtropical waters of North and South America (Rivas 1986). In Florida, adult snook spawn primarily in the spring and summer months from April through September (Taylor, Grier & Whittington 1998). Spawning events occur at inlets and tidal passes of estuaries and along ...
متن کاملOntogeny of suction feeding capacity in snook, Centropomus undecimalis.
The ontogeny of suction feeding performance, as measured by peak suction generating capacity, was studied in the common snook, Centropomus undecimalis. Suction pressure inside the buccal cavity is a function of the total expansive force exerted on the buccal cavity distributed across the projected area of the buccal cavity. Thus, the scaling exponent of peak suction pressure with fish standard ...
متن کاملA new species of Acantholochus (Copepoda: Bomolochidae) parasitic on Centropomus undecimalis (Osteichthyes: Centropomidae) from the coastal zone of the State of Rio de Janeiro, Brazil.
A new species of Acantholochus Cressey, 1984 (Copepoda: Bomolochidae) parasitic on the gills of common snook, Centropomus undecimalis, from the coastal zone of the State of Rio de Janeiro, Brazil, is described and illustrated. The new species differs from all other species of Acantholochus by the presence of only one inner seta on middle segment of the second and third endopods.
متن کاملEffects of fatty acid composition and spawning season patterns on egg quality and larval survival in common snook (Centropomus undecimalis)
Article history: Common snook (Centropom Received 19 February 2008 Received in revised form 17 October 2008 Accepted 22 October 2008
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