Results 31 to 40 of about 749 (144)

Restriction fragment length polymorphisms of mitochondrial DNA among five freshwater fish species of the genus Astyanax (Pisces, Characidae)

open access: yesGenetics and Molecular Biology, 2002
Restriction fragment length polymorphism (RFLP) analysis of mitochondrial DNA (mtDNA) was employed to characterize species and populations of Astyanax, a Neotropical freshwater fish genus. Samples of five species, A. altiparanae, A.
Cinthia Bachir Moysés   +1 more
doaj   +1 more source

Study of the Genetic Diversity of the Ornamental Fish Badis badis (Hamilton‐Buchanan, 1822) in the Terai Region of Sub‐Himalayan West Bengal, India

open access: yesInternational Journal of Biodiversity, Volume 2014, Issue 1, 2014., 2014
Dwarf chameleon fish or Badis badis, a lesser known ornamental freshwater fish, has recently been included in the Indian threatened category of fish list. There are insufficient studies with regard to the assessment of genetic background of this ichthyofauna, especially in the western sub‐Himalayan region of West Bengal, India, popularly known as the ...
Tanmay Mukhopadhyay   +2 more
wiley   +1 more source

Testes of Astyanax altiparanae: The Sertoli cell functions in a semicystic spermatogenesis [PDF]

open access: yes, 2014
The Astyanax altiparanae (lambari) is a South American freshwater fish belonging to the family Characidae. Although some authors have described reproductive aspects of this species, this is the first study about the morphology of the testes throughout ...
Costa, F. G.   +6 more
core   +1 more source

Food resource used by small-sized fish in macrophyte patches in ponds of the upper Paraná river floodplain - DOI: 10.4025/actascibiolsci.v31i2.3266

open access: yesActa Scientiarum: Biological Sciences, 2009
This study analyzed the diet of seven small-sized fish species (Characidae) and assessed their use of food resources. The species were collected in 2001 from nine ponds with aquatic macrophytes in the Paraná river floodplain, Brazil. Astyanax altiparanae,
Valdirene Esgarbosa Loureiro Crippa   +2 more
doaj   +1 more source

Diversity of Monogenea (Platyhelminthes) parasites of Astyanax altiparanae in the reservoir of Itaipu Hydroelectric Power Station [PDF]

open access: yes, 2011
Os peixes podem ser parasitados por um grande número de espécies pertencentes a vários filos. Os Monogenea são ectoparasitos e as patogenias causadas por eles são consideradas as mais importantes para a criação de peixes.
Almeida, Karina da Silva Silveira de   +1 more
core   +2 more sources

Colonization of the Corumbá Reservoir (Corumbá River, Paraná River Basin, Goiás State, Brazil) by the "lambari" Astyanax altiparanae (Tetragonopterinae; Characidae)

open access: yesBrazilian Archives of Biology and Technology, 2005
This work aimed to determine which population features were important to the colonization process of Astyanax altiparanae in the Corumbá Reservoir. The species presented wide spatial-temporal distribution, caught in all months and sites.
Rosa Maria Dias   +4 more
doaj   +1 more source

Comparative Cytogenetics and Molecular Phylogeography in the Group Astyanax altiparanae - Astyanax aff. bimaculatus (Teleostei, Characidae) [PDF]

open access: yes, 2011
The genus Astyanax comprises small characin fish of the neotropical region. The so-called `yellow-tailed characins` compose one of the most widely distributed Astyanax groups. A. altiparanae and A. aff. bimaculatus, are evolutionarily closely related and
C. Garcia   +12 more
core   +1 more source

Molecular and Physiological Insights Into Handling Stress Responses in Hybrid Grouper (Epinephelus fuscoguttatus × Epinephelus lanceolatus)

open access: yesAquaculture Research, Volume 2026, Issue 1, 2026.
Handling stress is a significant challenge in intensive aquaculture, often compromising fish welfare, immunity, and overall productivity. This study investigates the skin transcriptomic responses, blood plasma enzyme activities, and histological changes in the liver, spleen, and head kidney of hybrid grouper (Epinephelus fuscoguttatus × E. lanceolatus)
Saleema Matusin   +7 more
wiley   +1 more source

The Research Advances in Distant Hybridization and Gynogenesis in Fish

open access: yesReviews in Aquaculture, Volume 17, Issue 1, January 2025.
ABSTRACT Distant hybridization and gynogenesis are two prevalent breeding techniques for fishes. Drawing from the research achievements of our team and the existing literature, we summarize the reproductive traits and genetic features of fishes derived from distant hybridizations and gynogenesis, and we deduce the fundamental mechanisms of these two ...
Qizhi Liu   +15 more
wiley   +1 more source

Cytogenetic and comparative morphology of two allopatric populations of Astyanax altiparanae Garutti & Britski, 2000 (Teleostei: Characidae) from upper rio Paraná basin

open access: yesNeotropical Ichthyology
The recently described fish species, Astyanax altiparanae (tetra) is common in the upper rio Paraná basin, and has been reported in the Iguaçu basin. However, its natural origin in the rio Iguaçu is questionable.
Manoela de S. Domingues   +7 more
doaj   +1 more source

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