[PDF] Top 20 Neotrop. ichthyol. - vol.16 número1

... The location of the 18S rDNA gene is not constant in Astyanax, varying from two sites as is the case for A. lacustris, A. abramis, A. argyrimarginatus and A. asuncionensis up to seven sites in populations of A. ... See full document

... ted in Tabs. 4, 5. D. X+I. 22-24; A.II.8; P. 16-18; gill rakers 22-26; pored lateral line scales to caudal fin base 49-53±; scale rows above lateral line 8-9 (rarely 10), below 9-11. Body moderately long and ... See full document

... Other authors as Angermeier, Winston (1998) demonstrated that local fish species richness was better predicted by fish diversi- ty within relatively small regions (e.g., physio[r] ... See full document

... than 16 mm SL, distinct from other species of the genus, it still supports the proposal of the permanence of the larval fin in speci- mens of relatively large size as a potential synapomorphy for a clade composed ... See full document

... photoperiod was 12 hours of light. After acclimatization, 10 animals were randomly selected for blood analysis as an initial baseline. Of the remaining 32 animals, 16 received a tag and 16 remained ... See full document

... Dorsal-fin rays ii,8,ii*; pectoral-fin rays i,12(3), i,13(7), i,14*(20), i,15(9) or i,16(4); pelvic-fin rays i,8*(41) or i,9(3); anal-fin rays ii-iii,5,ii(2) or ii-iii,6,ii*(42); caudal- -fin rays i,8,9,i*(38). ... See full document

... nattereri is an endangered species (Lima et al., 2008; Rosa, Lima, 2008), the data in our study, and especially the levels of genetic diversity (A = 48, N A = 6.857 and H E = 0.574)[r] ... See full document

... kreffti is incidentally captured by squid trawlers (Rincon et al., 2017), impacts of these fisheries in B. kreffti populations might be expected. Therefore, the aim of the present stud[r] ... See full document

... Absolute and cumulative frequency of individuals by length class (cm) (a) and total weight of individuals by length class and condition factor (k) (b) of Pomatomus saltatrix, obtained[r] ... See full document

... The Araçá Bay (southeastern Brazil) is a tidal flat ecosys- tem (~ 500,000 m²) with highly diverse habitats occupied by more than 1,364 species, with 56 novel species catalogued, as well as 16 threatened species ... See full document

... We used permutational multivariate analysis of variance (PerMANOVA) to test the effect of deforestation on univariate (abundance, biomass, richness) and multiva- riate (assemblage stru[r] ... See full document

... Dorsal fin II,5; originated slightly posterior to vertical through origin of pectoral fin; spinelet rigid, triangular in frontal view, covered by thin layer of skin; dorsal-fin spine s[r] ... See full document

... rubripinnis because it has 23–25 branched dorsal-fin rays, 80–89 total lateral line scales, and an oval anterior fontanel (vs. a circular anterior fontanel, Fig. A circular anterior fo[r] ... See full document

... Moreover, as the water temperature and type of ecosystem influence ecological speciation in the western Atlantic (Rocha et al., 2005; Pinheiro et al., 2018), we may expect some genetic[r] ... See full document

... Dorsal profile of body convexly raising from tip of snout to dorsal-fin origin, then straight or slightly convex to adipose fin, and concave from that point to caudal fin.. Ventral pro[r] ... See full document

... heterura, the cytoplasmic movements, few cortical alveoli, absence of blastomeres, formation of perivitelline space and animal and vegetative poles in the eggs allowed us to infer that[r] ... See full document

... To test the influence of species (sample) average biomass (kg / 2m²), average abundance (ind. / 40m²), habitat and trophic group on the average feeding pressure and centrality in the a[r] ... See full document

... Considering the diversity within Rhamdia and the demonstrated endemism of some of its species to restricted river basins (Garavello, Shibatta, 2016; Angrizani, Malabarba, 2018), Silfvergrip’s (1996) assignment of a ... See full document

... This family has a close phylogenetic relationship with Caesionidae (fusiliers), with much evidence that it is in fact a single family, with Caesionidae being incorporated as a[r] ... See full document

... Growth is an important component of fish life history (Vaz-dos-Santos, 2015; Weatherley, 1966). The energy in- take of an individual is directed to body mass development in the juvenile stage and both body mass and ... See full document