Condition of larval and juvenile red drum ( Sciaenops ocellatus ) from estuarine nursery habitats
نویسندگان
چکیده
منابع مشابه
Condition of larval and juvenile red drum (Sciaenops ocellatus ) from estuarine nursery habitats
RNA:DNA ratios of larval and juvenile red drum (Sciaenops ocellatus) collected from nursery habitats in the Aransas Estuary, Texas, in 1994 were quantified using a highly sensitive ethidium-bromide fluorometric technique. RNA:DNA ratios of wild red drum were evaluated by comparing individual values to a linear regression model derived for starved laboratoryreared red drum. Wild red drum were in...
متن کاملDNA Ratios to Evaluate the Condition and Growth of Larval and Juvenile Red Drum (Sciaenops ocellatlcs)
RNA:DNA ratios in individual red drum (Sciaenops ocellatus) were measured in laboratory-reared larvae and juveniles (6-20 mm standard length; age 16-40 days) to assess the effects of growth, starvation, and die1 periodicity on biochemical condition. RNA: DNA ratios were correlated positively with both absolute (mm day-') and instantaneous (% day-') growth rates. The effect of starvation was eva...
متن کاملGrowth of newly settled red drum Sciaenops ocellatus in different estuarine habitat types
We examined growth of recently settled juvenile red drum in salt marsh, seagrass, oyster reef, and on nonvegetated bottom areas in the Galveston Bay system of Texas (USA). We estimated growth using otolith microstructure from free-ranging fish collected in different habitat types and also measured growth of red drum in experimental enclosures where fish movement was restricted. Otolith growth w...
متن کاملA genetic linkage map of red drum, Sciaenops ocellatus.
Second-generation, sex-specific genetic linkage maps were generated for the economically important estuarine-dependent marine fish Sciaenops ocellatus (red drum). The maps were based on F(1) progeny from each of two single-pair mating families. A total of 237 nuclear-encoded microsatellite markers were mapped to 25 linkage groups. The female map contained 226 markers, with a total length of 127...
متن کاملCharacterization of digestive enzymes during larval development of red drum (Sciaenops ocellatus)
The digestive capacity of red drum larvae throughout development was evaluated by characterizing and quantifying digestive enzyme activities using biochemical and substrate-SDS-PAGE techniques with specific inhibitors. Results showed that red drum larvae posses a nearly complete set of alkaline proteases since first feeding (3 days post-hatch). Alkaline proteases played a major role in digestio...
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ژورنال
عنوان ژورنال: Marine Biology
سال: 1997
ISSN: 0025-3162,1432-1793
DOI: 10.1007/s002270050025