Abstract This study evaluated fish beta diversity in six headwater creeks located the area affected by largest ornamental aquaculture center implemented Minas Gerais State, southeastern Brazil. We sampled assemblages 2017 and 2018 to investigate changes assemblage structure (species richness diversity), comparing these data with historic species pool. recorded 60 species, of which 16 were nativ...

As a new freshwater aquaculture product, triploid loaches (Misgurnus anguillicaudatus) are characterized by fast growth, high-quality meat, high edibility, resistance to disease, and sterility. In this study, natural tetraploid loach (4n = 100) (?) was crossed with diploid (2n 50) (?), thus creating the hybrid (3n 75). The histological observations of offspring controls at 4 days post-hatching ...

Abstract Vertical distribution patterns and relative abundance of mesopelagic fish species other major taxonomic groups were investigated through vertically stratified trawl sampling hydroacoustic analyses along the subtropical convergence zone from 52° W to 70° in oligotrophic Sargasso Sea. Persistent stationary layers several migrating components different scattering characteristics detected....

The apparent impacts of overgrowth of population are many. It has direct impact on natural surroundings, i.e. land, water air and natural resources. Lead is found naturally in a variety of minerals. It is most ancient poison known to man. Environmental levels of lead have increased more than 1,000-fold over the past three centuries as a result of human activity. Leafy fresh vegetables grown in ...