[PDF] Top 20 Neotrop. ichthyol. - vol.7 número4

... The presence of three 45S rDNA sites is a peculiar feature to A. laticeps. Despite having the same chromosome number, the other species of this genus differ in the distribution pattern of ribosomal cistrons. Differential ... See full document

... Induced spawning of the endangered Neotropical species Steindachneridion parahybae (Siluriformes: Pimelodidae).. Danilo Caneppele 1 , Renato M.[r] ... See full document

... For this study we studied the same specimens used for a previous analysis of reproductive seasonality of the species (Torres-Mejia & Ramírez-Pinilla, 2008). Specimens were collected at río Fonce and 500 m upstream ... See full document

... The sex ratio established for the B. draco studied population was 1:1 in each month, as well as in the global sample. Sexual dimorphism related to total body length was determined for the species, with males growing to ... See full document

... Fig. 7 presents the cumulative distribution of large and small power dams of the Jacuí basin (n = 24, data from National Electric Power Agency - ANEL) according to an altitudinal ... See full document

... Hormonal induction of the silvercatfish broodstock resulted in high fertilization rates in the control crosses, but differences in fertilizing capacity of the same male were observed whe[r] ... See full document

... In the present study, high exogenous un-ionized ammonia levels (NH 3 ) combined with various oxygen saturation levels altered NTPDase and AChE activities after 24 h of exposure.. Several[r] ... See full document

... To analyze the reproductive biology of the peacock bass Cichla piquiti, 361 specimens were collected bimonthly in the Itumbiara Reservoir, southeast Brazil, from December 2004 to November 2005. Males and females in ... See full document

... To investigate the spatial and temporal variations in the diet of fishes in drowned streams, we chose the flag tetra Hyphessobrycon heterorhabdus (Ulrey, 1894) (Characiformes: Characid[r] ... See full document

... Speckled worm eels (Myrophis punctatus; Actinopterygii; Anguilliformes; Ophichthidae) were collected on River Itanhaem’s estuary (24.190°S 46.795°N). We reared a stock population (0.4 fish/L) in plastic tanks containing ... See full document

... Reis 2 A cave population of the armored catfish Isbrueckerichthys alipionis is reported from the Santana Cave, in the rio Betari wa- tershed, Upper Ribeira karst area, Iporanga, São Paul[r] ... See full document

... Cases of reduced numbers of native fish fauna and local extinction of species have been recently reported in Brazilian inland waters related to the introduction of non-native spe- cies[r] ... See full document

... The single record of the sharksucker (Echeneis naucrates) attached to a spinner dolphin (Stenella longirostris) is based on a photograph taken at Fernando de Noronha Archipelago, off nor[r] ... See full document

... On the other hand, the differentiation of the endemic component of the reef fish faunas of Fernando de Noronha Archipelago and Atol das Rocas is suggested by Nunan (1992) and Rocha (2003[r] ... See full document

... as in Farlowella schreitmuelleri (present study), in which four chromosome pairs (Nos. 7, 14, 25 and 28) had ITSs in the pericentromeric region. In pair No. 28, the ITS was observed in only one of the homologs. In ... See full document

... A = Hemigrammus brevis, endemic species of São Francisco Ecoregion (SFRE); B = Moenkhausia costae and C = Psellogrammus kennedyi, shared species between SFRE and Mid- Northeastern Caati[r] ... See full document

... Dorsal fin ii,7; its origin slightly posterior to vertical with pelvic-fin origin. Unbranched rays of dorsal fin slightly convex. Tip of adpressed dorsal-fin rays surpassing anal-fin origin. Dorsal-fin spinelet ... See full document

... The species is characterized by the presence of a dorsal series of four rounded or irregular dark brown or black blotches, one on each edge of the dorsal-fin base, the third on the adi[r] ... See full document

... The results of the present study demonstrate that 1) L. piau reproduces in the two studied sections of the SFR Basin; 2) females and males have lower TL, BW, K, and GSI values in the l[r] ... See full document

... Gerald R. Smith (UMMZ); Ricardo M. Corrêa e Castro (USPRP). Sara V. Fink (UMMZ) prepared Figs.15-18, 32-35, 39-41, 56-59, 66-69, 73-76, and 81-87, Bonnie Bower-Dennis Figs. 24-28, Diane Mahaney Figs. 47 and 51, Tamara ... See full document