[PDF] Top 20 Neotrop. ichthyol. - vol.12 número4

... musaica in the presence of an unpigmented region anterodorsal of the orbits either in the form of a rounded spot or a broad median band extending anteriorly to the upper lip (vs. wit[r] ... See full document

... and dentary teeth (vs. three), 13-14 opercular odontodes (vs. 8-11), 41-43 interopercular odontodes (vs. 22-30), 6-7 branchiostegal rays (vs. 8), anterior portion of sphenotic anterolaterally directed in dorsal view (vs. ... See full document

... basin, 12 occur only in the North Group, five occur in both the North and Central Groups, one only in the Central Group, one in both the Central and South Groups, and two only in the South ... See full document

... In this sense, based on the Patch Dynamics Concept applied to river ecosystems (Pringle et al., 1988; Winemiller et al., 2010), we predict spatial discontinuity in fish [r] ... See full document

... The new species is similar to Myleus pacu and Myloplus planquettei in its silver to purplish black coloration and its overall morphology, and has a putative syntopic distribution with t[r] ... See full document

... In this context, our study was guided by the following question: Is the coexistence of Astyanax species in the Iguaçu River basin favored by food resource partitioning? We predic[r] ... See full document

... This hypothesis was confirmed, because the ATPase levels and oxidative stress variables in pacus exposed to acidic (mainly) or alkaline pH under HWH were reduced or showed fewer chang[r] ... See full document

... The aims of this work were to identify through partial sequences of the COI gene Gymnotus species fished in the Jacaré-Guaçu River, SP, and to develop a molecular diagnostic approach us[r] ... See full document

... interstitial lymphohematopoietic tissue with MMCs deposits characterizes the exocrine kidney, in addition, the contoured tubules; renal corpuscle (white arrow); HE, bar scale = 200 µm.[r] ... See full document

... Our findings about larvae of Apareiodon piracicabae extends the known area of occurrence and reproduction of this non-native species, now widespread in the basin (Moraes et al., 20[r] ... See full document

... Lithoxus lithoides is extremely different from Paralithoxus mocidade having larger eyes, larger pectoral fins (more developed in nuptial males), larger posterior membranous [r] ... See full document

... The high-gain, which amplifies the signal at the electrodes 410 times, is intended to provide first detection of a fish at a much greater range than the low-gain position (typically m[r] ... See full document

... Data collected from the Lajeado Dam (Usina Hidrelétrica de Lajeado - UHE) fish ladder on the Tocantins River were used to evaluate the following trends: (i) variations in piscivorous fis[r] ... See full document

... Pacamã were obtained from São Francisco River and tributaries (lotic fish) (n=10), the dam of Três Marias (lentic fish) (n=10), and the aquaculture laboratory (cultured fish) (n=10), of the Federal University of Minas ... See full document

... the downstream passage of adult fish (Agostinho et al., 2011) revealed that downstream movements through the ladder at Lajeado Dam, Tocantins River, are virtually absent despite the larg[r] ... See full document

... Although there was no relationship between plasma ion levels and water salinity when considering all species together (Table 2), a significant relationship was observed for two species c[r] ... See full document

... presence); from H. divisorensis and H. surinamensis by the absence of a wide black asymmetrical spot covering base of caudal-fin rays; from H. helleri and H. jelskii by the size of humeral spot (over 7-8 vs. 5-6 ... See full document

... In modified environments, cannibalism was considered a principal feeding behavior of the species Cichla, mainly during the reproductive period (Gomiero & Braga, 2004a; Fugi et al., 2[r] ... See full document

... This study aims to develop candidate microsatellite loci to accurately access genetic diversity and help in future studies of population genetics of electric eels.. Thus, this paper re[r] ... See full document

... Results from geometric morphometrics and molecular analyses were consistent with the results of the traditional morphological analysis, also indicating the delimitation of six taxa bel[r] ... See full document