Results 71 to 80 of about 42,740 (228)

Introgressive Hybridization and the Evolution of Lake-Adapted Catostomid Fishes. [PDF]

open access: yes, 2016
Hybridization has been identified as a significant factor in the evolution of plants as groups of interbreeding species retain their phenotypic integrity despite gene exchange among forms.
Carson, Evan W   +5 more
core   +2 more sources

A Continuum of Biodiversity: Revealing Marine Tropical Fish Diversity From Intra‐ to Interspecific Variation Through Environmental DNA

open access: yesEnvironmental DNA, Volume 8, Issue 3, May‐June 2026.
This study applies eDNA metabarcoding on conserved and hypervariable mitochondrial markers to assess species diversity in Caribbean marine fishes and population haplotype diversity in grunts. By standardizing biodiversity monitoring across scales, eDNA provides a unified understanding of the processes generating diversity patterns from populations to ...
Maurine Vilcot   +7 more
wiley   +1 more source

Estudo morfológico do tecido hepático de Leporinus macrocephalus = Morphological study of the hepatic tissue of Leporinus macrocephalus

open access: yesActa Scientiarum: Biological Sciences, 2007
O presente trabalho objetivou análise macroscópica e histológica do fígado de Leporinus macrocephalus para avaliar a estrutura do tecido hepático. Os peixes provenientes de um pesqueiro da região de Bauru, Estado de São Paulo, foram anestesiados, mortos,
Maria Terezinha Siqueira Bombonato   +3 more
doaj  

Peroxisomes in intestinal and gallbladder epithelial cells of the stickleback, Gasterosteus aculeatus L. (Teleostei) [PDF]

open access: yes, 1988
The occurrence of microbodies in the epithelial cells of the intestine and gallbladder of the stickleback, Gasterosteus aculeatus L., is described. In the intestine the organelles are predominantly located in the apical and perinuclear zone of the cells ...
AJH Ruiter de   +23 more
core   +4 more sources

Possible identification of CENP-C in fish and the presence of the CENP-C motif in M18BP1 of vertebrates. [version 2; referees: 2 approved]

open access: yesF1000Research, 2016
The centromeric protein CENP-C is a base component of the kinetochore. This protein, along with CENP-A has been shown to adaptively evolve in a number of animal and plant species.
Leos Kral
doaj   +1 more source

Ichthyological ecoregions of Argentina [PDF]

open access: yes, 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
core  

New Insights Into the Biogeography of Six Garra Species (Teleostei: Cyprinidae) in the Persian Gulf Basin

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
We present data and inferences supporting the case for post‐LGM secondary contact between eastern and western G. rufa populations that became isolated by post‐Pleistocene sea level rise of the Persian Gulf. We suggest river capture as a probable mechanism explaining secondary dispersal of Garra rufa populations from eastern to western river drainages ...
Iraj Hashemzadeh Segherloo   +13 more
wiley   +1 more source

Year 1 report for ‘Conserving Texas Biodiversity: Status, Trends, and Conservation Planning for Fishes of Greatest Conservation Need’ [PDF]

open access: yes, 2015
State Wildlife Grant Program, grant TX T-106-1 (CFDA# 15.634), Contract No. 459125 UTA14-001402Substantive progress was made on all major Project Activities in this first year: Activity 1.
Casarez, Melissa   +4 more
core   +1 more source

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

open access: yesOikos, Volume 2026, Issue 4, April 2026.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade   +4 more
wiley   +1 more source

Five new species of Hemibrycon (Characiformes: Characidae) from the Río Magdalena basin, Colombia

open access: yesRevista de Biología Tropical, 2010
Five new fish species of the genus Hemibrycon are described from the Río Magdalena basin, Colombia, using morphometric, meristic and osteological characters. Hemibrycon paez (n=40) differs in number of lateral line scales (39 to 42 vs.
César Román-Valencia   +1 more
doaj  

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