Results 71 to 80 of about 12,739 (216)
River Research and Applications, Volume 41, Issue 9, Page 1949-1958, November 2025.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
Genetics and Molecular Biology, 1999 Chromosomes of two Brycon species (B. lundii and B. microlepis) and Salminus hilarii were analyzed. Based on constitutive heterochromatin distribution patterns, karyotypic relationships within and between Bryconinae and Salmininae were examined.
Vladimir Pavan Margarido +1 more
doaj +1 more source
Fisheries statistics of Kainji Lake, northern Nigeria, Nov. 1994 - Dec. 1998 [PDF]
, 1999 Results are presented for the first 4 years data (1994-1998) of the Kainji Lake catch assessment survey, collected and analysed by the Nigerian-German Kainji Lake Fisheries Promotion Project.
Abiodun, J.A., du-Feu, T.A.
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Citogenética molecular e evolutiva na família Characidae [PDF]
, 2021 Some species of the genus Moenkhausia have already been studied cytogenetically, and the presence of B chromosomes is considered an interesting feature of these fish. These dispensable supernumerary elements that do not recombine with the standard chromosomes and follow their own evolutionary mechanism vary in number, morphology and distribution, as ...
openaire +2 more sources
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 8, August 2025.ABSTRACT Changes in land use and land cover severely impact the ecological structure of aquatic ecosystems and can lead to losses in fish populations. To further examine the cause and effect, the present study aimed to evaluate (1) differences in land use and cover among subbasins of the Vacaria, Brilhante, Dourados and Lower Ivinhema Rivers, (2 ...
Bianca de Oliveira Souza +3 more
wiley +1 more source
A new miniature characid (Ostariophysi: Characiformes: Characidae), with phylogenetic position inferred from morphological and molecular data. [PDF]
PLoS ONE, 2013 Erythrocharax altipinnis is described from the Serra do Cachimbo, Pará, Brazil. The new taxon is distinguished from all of the Characidae genera by having the pelvic bones firmly attached through the isquiatic processes; a nearly triangular hiatus in the
André Luiz Netto-Ferreira +4 more
doaj +1 more source
The past history and present trends in the fisheries of Lake Chad [PDF]
, 1993 Lake Chad is a very large, shallow eutrophic lake shared by Chad, Nigeria, Niger and Cameroun. It supplies approximately 13% of Nigeria's inland fish. It however lies in an unstable ecological environment characterised by intermittent period of rainfall ...
Raji, A.
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Redescription of Cheirodon Ibicuiensis Eigenmann, 1915 (Characiformes: Cheirodontinae), with Notes on its Distribution in Argentina [PDF]
, 2008 Cheirodon ibicuhiensis Eigenmann, 1915, is redescribed including new anatomical data based on material collected at sixteen localities in the Lower Paraná and Lower Uruguay River basins in Argentina.
Mantinian, Julia Erika +2 more
core +2 more sources
Genetics and Molecular Biology, 2002 In the present study, nuclear DNA content was analyzed in 53 species of Characiformes fish from the Neotropical region. Diploid number ranged from 2n = 48 in Astyanax fasciatus, Gymnocorymbus ternetzi and Hyphessobrycon griemi to 2n = 102 in Potamorhina ...
Margarida Lima Carvalho +4 more
doaj +1 more source
The elusive scleral cartilages: Comparative anatomy and development in teleosts and avians
The Anatomical Record, Volume 308, Issue 7, Page 1838-1850, July 2025.Abstract The sclera of all vertebrate eyes is comprised of connective tissue, with some organisms developing cartilage within this tissue. A review of the cartilages that have been described in the vertebrate sclera and their anatomical relationships is discussed together with their potential homology.
Tamara A. Franz‐Odendaal
wiley +1 more source