Neotropical Freshwater Fishes
Priocharax nanus, a new miniature characid from the rio Negro, Amazon basin (Ostariophysi: Characiformes), with an updated list of miniature Neotropical freshwater fishes
... 24 Neotropical freshwater fish species to that list including four characiforms, seven siluriforms and 13 ...miniature Neotropical freshwater fishes have been discovered ...of ...
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Scolex Morphology of Proteocephalid Cestodes Parasites of Neotropical Freshwater Fishes
... The morphology of the scolices and metascolices of 29 proteocephalid species, parasites of fresh- water fishes from Brazil was compared by using scanning electron microscope, light and laser micros- copy. The ...
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Feeding and social behavior of the piabanha, Brycon devillei (Castelnau, 1855) (Characidae: Bryconinae) in the wild, with a note on following behavior
... concerning Neotropical freshwater fishes, we studied herein the feeding and social behaviors of Brycon devillei (Castelnau, 1855) on Preto River, Jequitinhonha ...the Neotropical region, and ...
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Three invasive species occurring in the diets of fishes in a Neotropical floodplain
... Comparing this study with others that recorded the proportions of L. fortunei and C. fluminea in the diet of fishes, we observed an inconstancy in the consumption of these species. Considering the high abundance ...
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Changes in the electrophysiological parameters of the posterior intestine of Anguilla anguilla (Pisces) induced by
... Oxytocin reduced SCC and TPD in the posterior intestine of A. anguilla. Since the neurohormones oxytocin, vasotocin and va- sopressin affect water and ion transport across many epithelia, their effects will be discussed ...
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Scattered organization of the histone multigene family and transposable elements in Synbranchus
... organized into tandemly repeated copies, while in others these sequences may be dispersed throughout the genome in small groups of copies (reviewed in Rooney et al., 2002). In fish species, data about chromosomal ...
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UREOTELISM IS INDUCIBLE IN THE NEOTROPICAL FRESHWATER Hoplias malabaricus (TELEOSTEI, ERYTHRINIDAE)
... Ornithine carbamoyl transferase (OCT) is the second most active UC enzyme (Nener, 1988; De Gregório et al., 1993). This enzyme activity is very high in the studied erythrinids, but compared with the water-breathing ...
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Distributions and phylogeographic data of rheophilic freshwater fishes provide evidences on the geographic extension of a central-brazilian amazonian palaeoplateau in the area of the present day Pantanal Wetland
... The distributions (Fig. 1) show that, in the case of species occurring also outside the upper rio Paraguay basin, distributions are clearly associated with upland headwaters in both the upper rio Paraguay basin as well ...
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Feeding ecology of Rivulus luelingi (Aplocheiloidei: Rivulidae) in a Coastal Atlantic Rainforest stream, southern Brazil
... tropical freshwater fish have shown that several species also shift their diets according to temporal variations (seasons), and the increase of feeding activity can be related with the rainy period, when prey ...
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Short-term Cold Storage of Sperm from Six Neotropical Characiformes Fishes
... Although sperm may be preserved in diluted form (Legendre et al., 1996), in this study we used it undiluted, fresh and integral. According to Cosson et al. (1999), sperm for preservation should show initial sperm ...
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Juveniles of K. ytupora
... ABSTRACT. Freshwater crabs are an important component of the fauna of limnic environments, and out of the two true freshwater crab families present in the Neotropics, Pseudothelphusidae is the most ...of ...
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Factors affecting assemblage attributes of freshwater Oligochaeta in Neotropical shallow floodplain lakes
... Abstract: Aim: Identify the effects of sediment composition and water conditions on diversity, richness, evenness, density and composition of freshwater Oligochaeta in shallow floodplain lakes. Methods: We sampled ...
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UNIVERSIDADE DE BRASÍLIA INSTITUTO DE CIÊNCIAS BIOLÓGICAS PROGRAMA DE PÓS-GRADUAÇÃO EM ECOLOGIA PEIXES DE RIACHO DO BRASIL CENTRAL: BIOGEOGRAFIA, ECOLOGIA E CONSERVAÇÃO
... região Neotropical mostram que há pouca influência das variações sazonais sobre a estruturação das comunidades ícticas em ambientes lóticos de pequeno porte (Winemiller, 1990;; Mazzoni & Lobón-Cerviá, 2000;; ...
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Biochemical and genetic alterations in the freshwater neotropical fish Prochilodus lineatus after acute exposure to Microcystis aeruginosa
... Fishes come in contact with this toxin by different routes, e.g., during feeding (Li et al., 2004) or passively through the gills during breathing (Zimba et al., 2001). Once inside the organism, the target organ ...
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Endoparasites new to the Neotropical freshwater turtle, Mesoclemmys vanderhaegei (Bour 1973) (Testudines, Chelidae), from central Brazil.
... Vieira, F. M., Novelli, I. A., Sousa, B. M. & Lima, S. S. 2008. A new species of Polystomoides Ward, 1917 (Monogenea: Polystomatidae) from freshwater chelonians (Testudines: Chelidae) in Brazil. Journal of ...
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Morphology of lateral line canals in Neotropical freshwater stingrays (Chondrichthyes: Potamotrygonidae) from Negro River, Brazilian Amazon
... teleost fishes (Cichlidae and Engraulididae) in the stomach contents of ...teleost fishes have diurnal habits, they may have been preyed upon at night when resting near the river ...
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Cobalt Chloride Treatment Used to Ablate the Lateral Line System Also Impairs the Olfactory System in Three Freshwater Fishes.
... in terms of social interactions. The importance of chemosensory communication during fish social behaviors is well documented, especially in the goldfish C. auratus. Both male and female goldfish release pheromones that ...
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Reynolds shear-stress and velocity: Positive biological response of neotropical fishes to hydraulic parameters in a vertical slot fishway
... of fishes through ...different neotropical fishes in some Brazilian fishways, and the main challenge has been to promote upstream passage of a large number of diverse fish ...two neotropical ...
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First record of Palombitrema triangulum (Suriano, 1981) Suriano, 1997 (Monogenea: Dactylogyridae) from freshwater fishes in Brazil
... Although there are evidences of monogeneans with a broad host species spectrum, most of them show high host specificity, occurring on a single species or on closely related fishes. The monogeneans of the family ...
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Os peixes de um lago de várzea da Amazônia Central (Lago Janauacá, Rio Solimões) e suas relações com os crustáceos ectoparasitas (Branchiura: Argulidae).
... of Teleostean fishes with a provisional classification of living forms .Bull.. The fishes and forest.[r] ...
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