Nelson Ferreira Fontoura | Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) (original) (raw)

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Papers by Nelson Ferreira Fontoura

Ecology

The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's mo... more The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for freshwater fishes. Our NEOTROPICAL FRESHWATER FISHES data set is the first to produce a large‐scale Neotropical freshwater fish inventory, covering the entire Neotropical region from Mexico and the Caribbean in the north to the southern limits in Argentina, Paraguay, Chile, and Uruguay. We compiled 185,787 distribution records, with unique georeferenced coordinates, for the 4225 species, represented by occurrence and abundance data. The number of species for the most numerous orders are as follows: Characiformes (1289), Siluriformes (1384), Cichliformes (354), Cyprinodontiformes (245), and Gymnotiformes (135). The most recorded species was the characid Astyanax fasciatus (4696 records). We registered 116,802 distribution records for native species, compared to 1802 distribution records for nonnative species. The main aim of the NEOTROPICAL FRESHWATER FISHES data se...

Craig/Freshwater Fisheries Ecology, 2015

Journal of Fish Biology, 2006

Frontiers in Marine Science

Neotropical Ichthyology

This contribution records the reproductive periods of ten dominant freshwater fish species from t... more This contribution records the reproductive periods of ten dominant freshwater fish species from the Patos Lagoon and Guaíba Lake (Astyanax fasciatus, Cyphocharax voga, Hoplias malabaricus, Oligosarcus jenynsii, Oligosarcus robustus, Hoplosternum littorale, Loricariichthys anus, Parapimelodus nigribarbis, Trachelyopterus lucenai, Pachyurus bonariensis). Data were derived from monthly samples in Casamento Lake (northern Patos Lagoon; Nov. 2002 to Apr. 2004) and Guaíba Lake (Jun. 2005 to May 2006). The reproductive period was determined according to the monthly variation of the gonadosomatic index (GSI). Fish reproduction was identified during all months of the year. Oligosarcus jenynsii started reproduction in winter, but extended spawning to spring (early warming-water reproduction). Three species also presented reproduction during warming water months, but beginning in spring and finishing in summer (late warm-water reproduction): P. nigribarbis, T. lucenai and P. bonariensis. Three...

Mitochondrial DNA Part A, 2017

Within the Sciaenidae family, the genus Micropogonias is composed of three recognized species alo... more Within the Sciaenidae family, the genus Micropogonias is composed of three recognized species along the Pacific coast of Mexico: Micropogonias altipinnis, M. ectenes, and M. megalops. These species exhibit overlapping diagnostic characters, which make species identification difficult. This study ties morphological differences (meristic, morphometry of body, and otolith) with DNA sequences (CO1 and 16S fractions of mtDNA and 28S of nDNA) among Micropogonias species in the Pacific. Meristic analysis showed a latitudinal variation among the three species in the number of rays, the number of gill rakers, and length of the longest spine of the dorsal fin. Discriminant analysis of morphometric characters (body and otolith) showed three morphological entities (p < 0.001). However, the mean genetic divergences among the three species with partial sequences of mtDNA (CO1 and 16S), and nuclear (28S) were lower than those reported at the interspecific level (>2%). Genetic results suggest that the three species are one species and that the differences in meristics and morphometry could be the result of phenotypic plasticity or incipient speciation. In this sense, M. ectenes and M. megalops are proposed as junior synonyms of M. altipinnis.

Revista Brasileira De Biologia, 1989

Latin American Journal of Aquatic Mammals, 2006

Promysis orientalis is a typical mysid from the Indian and Pacific oceans and it is first recorde... more Promysis orientalis is a typical mysid from the Indian and Pacific oceans and it is first recorded in waters of Patos Lagoon estuary. The occurrence of this species in the Rio Grande's Port access channel, suggests that they may have been transported in ballast water.

Neotropical Ichthyology, 2011

Revista de Gestão de Água da América Latina, 2011

RESUmO: O objetivo do presente trabalho foi identificar o padrão de distribuição longitudinal de ... more RESUmO: O objetivo do presente trabalho foi identificar o padrão de distribuição longitudinal de peixes migradores nos rios da bacia hidrográfica do rio Camaquã, Rio Grande do Sul, propondo um modelo probabilístico de distribuição presumida baseado ...