Results 21 to 30 of about 229 (134)

Alterations in Gonads and Liver Tissue in Two Neotropical Anuran Species Commonly Occurring in Rice Fields Crops [PDF]

open access: yes, 2021
Amphibians find a suitable habitat in rice agroecosystems, but their viability is affected by the sublethal effects of agrochemicals. Animal condition, external morphology, and liver and male gonad tissue histology were examined on Lysapsus limellum and ...
Curi, Lucila Marilén   +3 more
core   +1 more source

Programa de Ictiología Neotropical [PDF]

open access: yes, 2020
Conocimiento sobre anatomía, biología, ecología, biogeografía y diversidad de los ...

core  

Genetic diversity and structure of the commercially important native fish pacu (Piaractus mesopotamicus) from cultured and wild fish populations: relevance for broodstock management [PDF]

open access: yes, 2021
Pacu (Piaractus mesopotamicus) is one of the most important Neotropical freshwater fish species produced by aquaculture in South America. This study is the first attempt to inquire about aquaculture stocks in Argentina regarding genetic diversity and ...
Posner, Victoria   +5 more
core   +1 more source

Development and validation of sex-specific markers in Piaractus mesopotamicus [PDF]

open access: yes, 2022
The development of genetic markers for genomic screening is essential for addressing more accurate breeding programs in aquaculture and to ascertain the genetic architecture of productive traits, particularly the mechanisms underlying sex determination ...
Mascali, Florencia Carla   +9 more
core   +1 more source

Pasado, presente y futuro de la Ictiología Argentina. [PDF]

open access: yes, 2007
En este documento se publica la conferencia inaugural del II Simposio de Ictiología: La Perspectiva Neotropical (II SIA), dictada por el Dr.
Menni, Roberto C.
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A new catfish species of Microcambeva Costa & Bockmann, 1994 (Siluriformes: Trichomycteridae) from southern Brazil, with a redescription of M. ribeirae Costa, Lima & Bizerril, 2004

open access: yesJournal of Fish Biology, EarlyView.
Abstract Among the few species of Microcambeva reported as occurring in more than one hydrographic basin, M. ribeirae has been previously listed from both the Ribeira de Iguape and the Guaraqueçaba basins. However, morphological and molecular analyses revealed that the specimens from Guaraqueçaba represent a new species, which is described in this ...
Lucas S. de Medeiros   +6 more
wiley   +1 more source

Actualización, sistematización y estimación del índice de salud de la Colección de Peces del Museo de Historia Natural de la Universidad de Caldas, Colombia [PDF]

open access: yes, 2022
Objectives: To update, systematize and evaluate the status of the Fish (Ichthyological) Collection of the Natural History Museum at Universidad de Caldas (MHN-UCa).
Henao Osorio, Jose J.   +3 more
core   +1 more source

A new, conspicuously pigmented Pyrrhulina (Teleostei: Characiformes: Lebiasinidae) from the Río Tigre, Loreto, Peru

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of Pyrrhulina is described based on morphological and molecular evidence. Pyrrhulina punctata is distinguished from all congeners by the presence of a series of 7 to 16 irregular blotches of dark pigmentation on the flanks, equally marked in juveniles and adult specimens, the presence of 26–28 lateral‐line scales, 17–21 maxillary
Andre Netto‐Ferreira   +4 more
wiley   +1 more source

Integrative taxonomy reveals two new species of whiptail catfishes Loricaria (Siluriformes: Loricariidae) from northeastern Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract Two new species of whiptail catfish, Loricaria (Siluriformes: Loricariidae), were discovered in the Munim and Itapecuru river basins, Maranhão State, northeastern Brazil, through an integrative taxonomic approach combining morphology and mitochondrial DNA.
Ananda. C. Serejo‐Saraiva   +4 more
wiley   +1 more source

A diversification case of heptapterine catfishes (Siluriformes, Heptapteridae) in the Magdalena basin, Colombia [PDF]

open access: yes, 2022
: The Magdalena River forms one of the most extensive basins in northwestern South America. In spite of having a relatively low taxonomic richness of fishes (236 species) compared with similar-sized basins in the continent, holds one of the highest level
Albornoz Garzón, Juan G.   +7 more
core  

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