| distribution of fish assemblages in lajes reservoir, rio de janeiro, brazil. | spatial distribution of fish assemblages in lajes reservoir, a 30 km2 impoundment in rio de janeiro state (lat. 22 degrees 42'-22 degrees 50's; long. 43 degrees 53'-44 degrees 05'w) was assessed to detect patterns of available habitat use by the fish. a standardized monthly sampling program was carried out from january to december 1994 at three zones of the reservoir (upper, near tributary mouths; middle; and lower, near the dam). fishes were caught by gillnets, (50 m long, 3 m height), with mes ... | 2002 | 12071313 |
| fecundity of the hypostomus affinis (siluriformes, loricariidae) in the lajes reservoir, rio de janeiro, brazil. | the armored catfish hypostomus affinis is a widespread loricariidae fish in the lajes reservoir (22 degrees 42'-22 degrees 50' s; 43 degrees 53'-44 degrees 05' w), the largest lentic environment in the rio de janeiro state, but little is known about their reproductive biology. one hundred and twenty five females, captured from january 1996 to december 1997, were used to assess ovarian development (29 were used to determine fecundity). the oocyte distribution by size-diameter classes revealed the ... | 2002 | 12298245 |
| [metazoan parasites of six fishes species from lajes reservoir in the state of rio de janeiro, brazil]. | from april 2002 to july 2003, 231 freshwater fishes from lajes reservoir in the state of rio de janeiro, brazil (22 degrees 42' - 22 degrees 50's, 43 degrees 53' - 44 degrees 05'w) were necropsied to study their community metazoan parasites: 39 astyanax bimaculatus (linnaeus, 1758), 79 a. fasciatus (cuvier, 1819), 23 hypostomus affinis (steindachner, 1877), 26 hoplias malabaricus (bloch, 1794), 30 loricariichthys castaneus (castelnau, 1855) and 34 trachelyopterus striatulus (steindachner, 1876). ... | 2007 | 18078597 |