Results 51 to 60 of about 311 (149)

Ichthyofauna of the Quarai-Chico creek, Uruguai river middle basin, Espinilho State Park, Rio Grande do Sul, Brazil [PDF]

open access: yesBiotemas, 2005
With the aim of identifying the composition of the ichthyofauna from Quarai-Chico creek (a tributary of the middle Uruguai river located in the municipality of Barra do Quarai), seasonal samplings were taken over the period of one year, from April 1997 ...
Thiago Bortoluzzi Pinto   +7 more
doaj  

Biometric relations of freshwater fishes of the Suaza River (Huila Department, Colombia) [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2016
The knowledge of freshwater fishes in remote Andean mountains is scarce and restricted to changes of occurrence distribution along a specific gradient.
I. Tobes   +3 more
doaj   +3 more sources

Length‐Weight Relationships of Sixteen Fish Species From the Upper Tietê Basin, Southeaster Brazil

open access: yesJournal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
This study investigated the length‐weight relationship (LWR) of 16 fish species from the Upper Tietê Basin under the influence of the Atlantic Forest biome, aiming to provide updated morphometric data and contribute to the knowledge of Neotropical ichthyofauna. 2811 specimens were collected and distributed across five orders and 10 families.
Luís Gustavo Nogueira de Carvalho   +7 more
wiley   +1 more source

Trophic ecomorphology of Siluriformes (Pisces, Osteichthyes) from a tropical stream

open access: yesBrazilian Journal of Biology
The present study analysed the relationship between morphology and trophic structure of Siluriformes (Pisces, Osteichthyes) from the Caracu Stream (22º 45' S and 53º 15' W), a tributary of the Paraná River (Brazil).
JPA Pagotto   +3 more
doaj   +1 more source

Assessing fish diversity in abandoned mining ponds in Madre de Dios, Peru, using environmental DNA

open access: yesEnvironmental DNA, Volume 6, Issue 1, January–February 2024.
We surveyed four lentic systems in Madre de Dios, Peru: two abandoned mining ponds created by ASGM and two unmined oxbow lakes as a reference to assess fish recolonization. We compared two alternative eDNA processing methods and contrasted our results with historic data from traditional biodiversity monitoring. Our results indicate that eDNA could be a
Camila Timana‐Mendoza   +4 more
wiley   +1 more source

Propagation of jundia Rhamdia quelen (Siluriformes: Heptapteridae) by applying the ovarian sperm injection method

open access: yesAquaculture Reports, 2020
We compared the effectiveness of the ovarian sperm injection method with that of the traditional one over the artificial propagation of jundia. Three experimental groups were set up containing seven females each. Females in Group 1 received common carp pituitary extract (CPE) homogenized in saline to induce ovulation and the stripped eggs were ...
István Ittzés   +5 more
openaire   +2 more sources

Contribución a los estudios de la fauna piscícola del Río Monday

open access: yesRevista de la Sociedad Científica del Paraguay, 2016
el presente estudio expone los resultados de una campaña intensiva de pesca de cuatro días en el Rio Monday. Se colectaron ejemplares de Cichlidae, Characidae, Heptapteridae, Erythrinidae citados en orden decreciente de sus capturas. Los ejemplares de la
F. Lozano   +3 more
doaj  

Actualización de la distribución de Rhamdella aymarae (Siluriformes: Heptapteridae)

open access: yes, 2018
Fil: Bogan, Sergio. Fundación de Historia Natural Félix de Azara; Argentina.
Briñoccoli, Yanina Florencia   +3 more
openaire   +4 more sources

Efficacy of eugenol and the methanolic extract of Condalia buxifolia during the transport of the silver catfish Rhamdia quelen

open access: yesNeotropical Ichthyology
This study evaluated extracts of Condalia buxifolia as anesthetics for the silver catfish Rhamdia quelen. The effectiveness of eugenol and of the methanolic extract (ME) of C. buxifolia during the transport of this species was also assessed.
Alexssandro Geferson Becker   +7 more
doaj   +1 more source

Comportamento alimentar da cobra d’água amazônica Helicops hagmanni Roux, 1910 (Reptilia: Squamata: Colubridae: Hydropsini)

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2008
O gênero Helicops inclui, atualmente, 15 espécies, das quais onze ocorrem na floresta amazônica. Helicops hagmanni se alimenta de peixes e apresenta hábitos noturnos, mas dados detalhados sobre seu comportamento alimentar e ecologia são escassos.
Marcelo José Sturaro   +1 more
doaj   +1 more source

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