Results 41 to 50 of about 557 (150)

Disentangling Environmental, Spatial and Niche Influences on Fish Beta Diversity Along the Sandy Beaches of an Amazonian River

open access: yesFreshwater Biology, Volume 71, Issue 7, July 2026.
ABSTRACT Beta diversity is an important descriptor of community structuring and it plays a crucial role for understanding the patterns and processes shaping biodiversity at multiple spatial extents. We investigated the influence of local, spatial, landscape factors and niche characteristics on fish beta diversity along the Acre River in Acre, Brazil ...
Ronaldo S. Silva   +9 more
wiley   +1 more source

EL LEGADO DEL ARSÉNICO Y MERCURIO EN EL COMPLEJO CENAGOSO RAMSAR DE AYAPEL, (CÓRDOBA, COLOMBIA): APROXIMACIÓN A LA MACROCUENCA MAGDALENA-CAUCA

open access: yesActa Biológica Colombiana, 2021
Colombia, país localizado al norte de Suramérica, afronta diferentes conflictos socioambientales y es uno de los más contaminados por mercurio en el mundo, situación que amenaza la riqueza natural y la biodiversidad del neotrópico, reconocida por sus ...
Mary Luz Pedraza   +1 more
doaj   +1 more source

First Records of Length–Weight Relationships for Ten Fish Species From the Middle Stretch of the Uruguay River, Southern Brazil

open access: yesJournal of Applied Ichthyology, Volume 2026, Issue 1, 2026.
This study estimated the length–weight relationships (LWRs) of 10 fish species from the middle stretch of the Middle Uruguay River basin, aiming to provide new morphometric data and contribute to the knowledge of Neotropical ichthyofauna. Fish were collected at seven sites with sampling conducted at each site during every season, totaling 84 sampling ...
Lucas Adriano Pachla   +4 more
wiley   +1 more source

Sorubim lima Bloch-Schneider

open access: yes, 1877
3. Sorubim lima Bloch-Schneider. - Nom. ind. „Paleta“. - Calabozo.Published as part of W. Peters, 1877, Hr. W. Peters las ueber die von Hrn. Dr. C. Sachs in Venezuela gesammelten Fische., pp.
W. Peters
core   +1 more source

Revision of genus Steindachneridion (Siluriformes: Pimelodidae)

open access: yesNeotropical Ichthyology
After several years collecting in the type-localities and studying representative samples of genus Steindachneridion Eigenmann & Eigenmann, 1919 from Brazilian and foreign museums, a taxonomic revision of the Recent species of the genus is presented ...
Julio Cesar Garavello
doaj   +1 more source

Sorubim trigonocephalus Miranda-Ribeiro 1920

open access: yes, 2007
<p>Sorubim trigonocephalus Miranda-Ribeiro 1920</p> <p>Arrowhead Shovelnose</p> <p>Fig. 3</p> <p>Sorubim trigonocephalus Miranda-Ribeiro, 1920: 12 (original description), pls. 10-11. Holotype: MNRJ 882 (317 mm
Michael W. Littmann
core   +1 more source

Evolutionary history of Middle American Rhamdia (Siluriformes: Heptapteridae) inferred from comparative mitogenomic data: Insights on historical biogeography and cave colonization in the group

open access: yesJournal of Systematics and Evolution, Volume 63, Issue 6, Page 1501-1518, November 2025.
Investigating the systematics and biogeography of Neotropical catfishes of the genus Rhamdia refined phylogenetic hypotheses, including deep paraphyly of Rhamdia laticauda, supported northward dispersal catalyzed by emergence of the Panamanian Isthmus and imply that cave colonization is widespread, convergent, and recent, with established cave‐dwelling
Jairo Arroyave   +6 more
wiley   +1 more source

Sorubim elongatus Littmann, Burr, Schmidt and Isern 2001

open access: yes, 2007
Sorubim elongatus Littmann, Burr, Schmidt and Isern 2001 Slender Shovelnose Catfish (English), paleta delgada (Spanish) Fig. 11 (Holotype), Fig. 12 Holotype: SIUC 30303 (123 mm SL). Peru: Departamento Loreto, Maynas Province, Ullpa Caño, 50 m upstream
Michael W. Littmann
core   +1 more source

Sorubim cuspicaudus

open access: yes, 2007
Sorubim cuspicaudus: Río Magdelena drainage: Colombia: BMNH 1900.1.30.12-13 (2:299-353 mm SL), Baranquilla, Thomson; BMNH 1947.7.1.197 (1:157 mm SL), Baranquilla. Miles; CAS 149475 (1:175 mm SL*), Bolivar, Río San Jorge, San Marcos, June 1955, G.
Michael W. Littmann
core   +1 more source

Hybrid sorubim víscera protein concentrate in the diets for barred sorubim. [PDF]

open access: yes, 2013
The current study evaluated the growth performance and the haematological profile of barred sorubim fed with levels of hybrid sorubim viscera protein concentrate (0.0; 5.0; 10.0 e 15.0%) in isoprotein and isoenergetic diets.
FONSECA, G. G.   +11 more
core  

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