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Showing 1 to 16 of 16 for “"Perciformes"”.
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Investigations of Phylogenetic Relationships of the Percidae (Actinopterygii: Perciformes) Using Comparative DNA Sequences
Darters are a diverse monophyletic lineage of the freshwater fish family Percidae. The majority of percid species (91%) are darters, which are endemic to North America. This investigation attempts to resolve phylogenetic relationships of percid fishes at three hierarchical levels. First, complete …
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Relações filogenéticas do complexo de espécies "Cichlasoma" facetum com clados da tribo Heroini (Perciformes: Cichlidae)
The phylogenetic relationships between the "Cichlasoma" facetum species complex and clades of the tribe Heroini, subfamily Cichlasomatinae, including taxa of Central and North America, are examined. The analysis is uniquely based on morpho-osteology of twenty-one species and includes five …
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Population structure, biochemical adaptation and systematics in temperate marine fishes of the genera Arripis and Chrysophrys (Pisces: Perciformes)
Electrophoretic and heat stability data have been obtained from 22 enzymatic proteins to assess the amount and distribution of genetic variation in fishes of the temperate percoid genera Arripis and Chrysophrys. Available biological and life history data have been reviewed, and indicate that …
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Population structure, biochemical adaptation and systematics in temperate marine fishes of the genera Arripis and Chrysophrys (Pisces: Perciformes)
Electrophoretic and heat stability data have been obtained from 22 enzymatic proteins to assess the amount and distribution of genetic variation in fishes of the temperate percoid genera Arripis and Chrysophrys. Available biological and life history data have been reviewed, and indicate that …
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Molecular Phylogenetics of Perciform Fishes Using the Nuclear Recombination Activating Gene 1
<p>The order Perciformes contains one-third of all extant fishes in twenty different suborders and over 10,000 species. Few systematic investigations have been performed on this large group of fishes at the suborder level and their evolutionary history is widely recognized as problematic. This …
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Revisão taxonômica das espécies do gênero Sphyraena Röse, 1793 (Teleostei, Perciformes, Sphyraenidae) ocorrentes na costa leste da América do Sul
… of the genus Sphyraena Röse, 1793 (Teleostei, Perciformes, Sphyraenidae) occurring in eastern coast of South America waters is presented. The study was based on specimens obained along the coast from off the State of Ceará (about 04º00'S – 39º00'W) to Santa Catarina (about 29º00'S – 49º00'W). …
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Ocorrência de Gerreidae (Osteichthyes, Perciformes) no canal de Camboatá, sistema lagunar de Itaipu-Piratininga, RJ: abundância relativa e cronologia alimentar
This paper contributes to the knowledge of Gerreidae species participation in tropical lagoon environments, with special reference to the Camboatá channel that interconnects the lagoon system Itaipu-Piratininga. The main objective being the analysis of the temporal distribution, the feeding …
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Diversidade e genética populacional do beijupirá (Rachycentron canadum; Perciformes: Rachycentridae): estruturação interoceânica, conectividade intra-oceânica e estimativa da variabilidade nas pisciculturas
O beijupirá Rachycentron canadum, é um peixe pelágico marinho, migrador, cosmopolita que possui grande interesse comercial no mundo. O presente trabalho objetivou avaliar a existência de estruturação populacional interoceânica, analisar a diversidade genética e a conectividade entre as populações …
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Linkage and Tissue Expression of Enzyme Loci in Interspecific Sunfish (Centrarchidae) Hybrids: Evolutionary and Quantitative Genetic Implications
Two species of sunfishes (Centrarchidae, Perciformes), green sunfish, G (Lepomis cyanellus), redear sunfish, R (L. microlophus), their reciprocal hybrids, and four different backcross progeny have been used to investigate the chromosomal locations of enzyme loci, the genetic basis for their …
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Observations on myxozoans (Myzozoa: Myxosporea) and the spatial and temporal variation in parasite assemblages of the nosestripe klipfish, Muraenoclinus dorsalis Bleeke, 1860 (Perciformes: Clinidae)
The coast of South Africa is one of the most biologically diverse marine systems in the world but little is known about the parasites occurring in this environment. A survey of the parasites of an intertidal clinid, Muraenoclinus dorsalis Bleeker, 1860, captured from Granger Bay, Kommetjie and …
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Distribution and community structure of Chaetodontidae (Perciformes) in iSimangaliso Wetland Park with the view to applying the Butterflyfish Indicator Hypothesis in this region of South Africa
… as an early warning system. Chaetodontidae (Perciformes) are one such family, containing coral dependent (obligate corallivore) species. This concept is known as the Butterflyfish Indicator Hypothesis (BIH). Through the collection of baseline data for butterflyfish abundance, diversity and …
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An Analysis of Gene Regulatory Evolution Within the Centrarchids
… among centrarchid fishes (Centrarchidae, Perciformes). The degree of divergence between the regulatory genes of different species was assessed investigating the extent to which morphological and molecular development is altered in hybrid embryos. The degree of gene regulatory divergence …
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Contribuição ao conhecimento da oesteologia Pachypops adspersus (Steindachner): complexos cefálicos e caudal
We have analised here the osteology of the cephalic bones and tail complex of young and adult fishes of the Pachypops adspersus (Steindachner) class, twenty of which were available, having in view the importance of these structural components on taxinomic, philogenetic and evolutive interpretation …