[PDF] Top 20 Neotrop. ichthyol. - vol.18 número2

... operculatum by the maxillary barbel longer than half-length of the head (vs. smaller than half-length of the head); the tips of pectoral-fin rays not extending beyond the interadial me[r] ... See full document

... density, number of free neuromasts and taste organs, feeding posture, sleep duration, amount of yolk content, ability to store fat, degree of darkness-preference etc., between cave and surface fish have a quantitative ... See full document

... Since it is crucial to understand the response of trophic groups to habitat alteration, our study aimed to address this research gap by assessing the influence of substrate composition[r] ... See full document

... the Uruguay River, South Brazil. Our aims were to: i) estimate the number of breeding males and females in the population; ii) assess the most prevalent genetic mating system in both s[r] ... See full document

... The hypothesis that the deterioration of water quality in extreme drought conditions causes oxidative stress was supported by our results, as shown by the increased lipid peroxidation [r] ... See full document

... Mouth sub-terminal; lower jaw short, included in upper jaw when mouth closed. Posterior tip of maxilla reaching vertical through anterior border of orbit. Outer premaxillary series with 4(29), 5*(39), or 6(12) tri- to ... See full document

... Methods, osteological terminology, and counts follow Boeseman (1968) and Schaefer (1987, 1997). The conditions cited in the text associated to different degrees of development of the a[r] ... See full document

... The new species can be distinguished from its congeners by the combination of a rounded dark blotch at the caudal peduncle and a pattern of horizontal stripes formed by series of cons[r] ... See full document

... While the 45S rDNA is located in a single chromosome pair in Ancistrus, the 5S rDNA can be present in a large number of chromosomal sites (ranging from 1 to 13 chromosome pairs) in the[r] ... See full document

... Using a total-evidence phylogenetic approach, Mirande (2019) found the same clade composition and the same phylogenetic relationships: (((Paracheirodon, Brittanichthys), the “Petitella[r] ... See full document

... Thanks to Melanie Stiassny, Scott Schaefer, Barbara Brown, Thomas Vigliotta (AMNH), Lynne Parenti, Jeffrey Clayton, Sandra Raredon, Diane Pitassy, Kris Murphy (USNM), Jonathan Armbruster, David Werneke (AUM), George ... See full document

... Regarding total omega-3 PUFAs, concentrations ranging from 21 to 42% were observed. It should be noted that linolenic acid (18:3n-3) was found in high percentages in wild Chirostoma spp., compared to the cultured ... See full document

... aphanes is proposed herein as both species share most diagnostics characters hypothesized by Buckup (1993b) as defining the genus: 1) absence of the posttemporal; 2) absence of the the[r] ... See full document

... Since sandy bottoms provide a higher contrast against leaf litter, one of the most common objects found underwater in igarapés, we suggest that natural selection stemming from predatio[r] ... See full document

... Habitat use, trophic, and occurrence patterns of Inpaichthys kerri and Hyphessobrycon vilmae (Pisces: Characidae) in Amazonian streams.. Jaquelini O.[r] ... See full document

... devil: courtship behaviour, mating evidences and population structure of the Mobula tarapacana (Myliobatiformes: Mobulidae) in a remote archipelago in the Equatorial Mid- Atlantic Ocean[r] ... See full document

... Given the knowledge gap that exists on the deep-sea fish fauna of the northern coast of Brazil, we compiled all the available data on the region’s deep-sea fish, including the identifi[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

... 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

... Pacus do gênero Myloplus representam um desafio taxonômico formidável, e particularmente o caso de M. asterias e M. rubripinnis, duas espécies amplamente distribuídas e comuns que abrigam uma considerável diversidade ... See full document