کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4400645 1306983 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reproductive seasonality of the fish fauna and limnoecology of semi-arid Brazilian reservoirs
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
پیش نمایش صفحه اول مقاله
Reproductive seasonality of the fish fauna and limnoecology of semi-arid Brazilian reservoirs
چکیده انگلیسی

The native fish fauna commonly found in the drainage basins of rivers and reservoirs of Latin America, including those of the semi-arid Northeastern Brazil, are representatives of the Neotropical region. This work reports on the reproductive ecology of five commercially important and consumable native fish species, in relation to rainfall and hydrological variables of the semi-arid reservoirs in Brazil. Pluviometric precipitation, temperature, pH, dissolved oxygen and electrical conductivity of the water were registered, and maturation of fish gonads was assessed on a monthly basis. This region is characterized with short spells of rain interspersed with long dry season and rainfall seems to be the main environmental factor which modulates the timing of the spawning period of fish. Construction of reservoirs without adequate facilities for fish migration has an adverse impact on the migratory fish species which are of commercial and ecological importance to semi-arid Northeastern Brazil.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Limnologica - Ecology and Management of Inland Waters - Volume 39, Issue 4, December 2009, Pages 325–329
نویسندگان
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