Results 61 to 70 of about 15,184 (259)
Observaciones sobre gónadas de algunas especies de peces del Paraná medio
Acta Zoológica Lilloana, 2022 Este artículo trata sobre las gónadas de algunas especies pertenecientes a siete familias de peces Characiformes y Siluriformes que se encuentran en el medio y bajo río Paraná.
Clarice Pignalberi
doaj
CLOFFAR - update 3 - supplement to Checklist of the Freshwater Fishes of Argentina [PDF]
, 2017 In May 2016 we have published the second update to CLOFFAR and in these few months a total of 22 changes have summed up. The total number of fishes known from the freshwaters of Argentina has increased to 538, caused by one new Hoplias and 13 first ...
Koerber, Stefan +2 more
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Systematics of the Neotropical characiform genus Potamorhina (Pisces, Characiformes)
Smithsonian Contributions to Zoology, 1984 NMNH ; NH-Vertebrate Zoology ; SISP ; Peer ...
openaire +3 more sources
River Research and Applications, EarlyView.ABSTRACT Local and regional species diversity is influenced by historical factors, resource availability, biotic interactions, the presence of resources, and adequate environmental conditions. We evaluated the effects of local environmental variables and spatial structure on fish species richness and composition along sandy beaches of a Neotropical ...
Ronaldo Souza da Silva +8 more
wiley +1 more source
Ichthyological ecoregions of Argentina [PDF]
, 2002 The Argentine Republic is situated in the southernmost portion of the American continent, occupying over 2,785,600 km2 not including the Antarctic territory. The country ranges from subtropical areas (21º46’S) to subantarctic regions (55º03’S), extending
López, Hugo Luis +2 more
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Desenvolvimento larval de Brycon hilarii (Characiformes, Characidae) [PDF]
Iheringia. Série Zoologia, 2012 O presente estudo caracterizou o desenvolvimento inicial de Brycon hilarii (Valenciennes, 1850) através de caracteres morfométricos e merísticos e analisou as relações entre as características morfométricas das larvas ao longo do desenvolvimento usando modelos de regressão linear, quadrática e linear por partes.
Oliveira, Fernando G. de +4 more
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Integrative Zoology, EarlyView.We found that teleosts employed two different strategies to ensure sufficient ZP (zona pellucida) synthesis: expansion of ZPB1(a) and ZPC1(a) in basal species or liver expression of ZPB1a and ZPC1aa in advanced species. The N‐terminus of expanded ZPB1(a) or ZPC1(a) and liver‐expressed ZPB1a contains repeated units or low‐complexity regions to form ...
Tian Gao +8 more
wiley +1 more source
Comparing lacustrine environments: the importance of the kind of habitat on the structure of fishes
Acta Limnologica Brasiliensia, 2018 Aim Fish diversity in two lentic environments: a lake connected (Barbosa lake) to a river and an artificial reservoir (Ninfeias reservoir) were determined in the dry and rainy periods in 2015. We expected to find more diversity in the connected lake and
Reinaldo José de Castro +3 more
doaj +1 more source
An analysis of Nigerian freshwater fishes: those under threat and conservation options [PDF]
, 2005 The study assessed qualitatively the threat status of all nigerian freshwater fishes using such criteria as rarity, size at maturity, mode of reproduction, human population density, habitat degradation, pollution and range of each species among others ...
Bankole, N.O., Olaosebikan, B.D.
core
Trends in chromosome evolution of neotropical characiform fishes [PDF]
Caryologia, 1994 SUMMARYNeotropical characiform fishes present two main trends of chromosomal evolution: some taxa show a heterogeneous pattern, with an extensive numerical and structural variation while others show a more homogeneous one, with a clear stability in their karyotype macrostructure.
Luis Antônio Carlos Bertollo +2 more
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