Results 81 to 90 of about 3,173 (211)

Biologia da tuvira, Gymnotus cf. carapo (Pisces, Gymnotidae) no baixo Rio Negro, Pantanal, Mato Grosso do Sul, Brasil. [PDF]

open access: yes, 2011
A biologia da tuvira, Gymnotus cf. carapo, por seu grande uso como isca viva para a pesca esportiva, foi estudada no baixo rio Negro, onde é coletada pelos isqueiros, pescadores especializados nesse tipo de pescaria. Foram estudados os aspectos relativos
GALVÃO, E. M.   +3 more
core   +1 more source

High affinity and temperature sensitivity of blood oxygen binding in Pangasianodon hypophthalmus due to lack of chloride-hemoglobin allosteric interaction [PDF]

open access: yes, 2015
Air-breathing fishes represent interesting organisms in terms of understanding the physiological changes associated with the terrestrialization of vertebrates, and, further, are of great socio-economic importance for aquaculture in Southeast Asia.
Bayley, Mark   +5 more
core   +2 more sources

Fish distribution across altitudinal gradients in the Upper Paraguay River Basin: Implications for conservation in the Pantanal region

open access: yesConservation Science and Practice, Volume 7, Issue 7, July 2025.
This paper approaches the patterns in fish distribution across the altitudinal gradient in the Upper Paraguay River basin, from uplands to the floodplain. We compiled more than 75,000 available fish records and registered 342 fish species and your distribution along altitudinal gradient. Floodplain portion have higher species diversity than headwaters,
Adriana Maria Espinoza Fernando   +11 more
wiley   +1 more source

Antagonistic Rewiring and Turnover Patterns in a Neotropical Fish–Parasite Metanetwork

open access: yesFreshwater Biology, Volume 70, Issue 7, July 2025.
ABSTRACT Integrating beta‐diversity and network analyses is an emerging approach for understanding the spatial structure of species communities. For instance, although the presence of hosts affects parasite species distribution, environmental factors can either restrict or promote the occurrence of certain parasite species by changing the abundance of ...
Ana Paula Lula Costa   +2 more
wiley   +1 more source

Feeding habit of Eigenmannia trilineata Lopez & Castello, 1966 (Teleostei: Sternopygidae) of Parque Estadual de Itapuã, RS, Brazil

open access: yesNeotropical Ichthyology
This study aims to describe the feeding habits of a population of the weakly electric fish Eigenmannia trilineata from Southern Brazil through the monthly frequency variation of replection (RI) and hepatosomatic (HSI) indexes, condition factor (CF) and ...
Júlia Giora   +2 more
doaj   +1 more source

Fish, lower Ivinhema River basin streams, state of Mato Grosso do Sul, Brazil. [PDF]

open access: yes, 2008
The Ivinhema River basin is one of the main tributaries of the western portion of Paraná River. However,few data are available on the fish communities of its streams.
Súarez, Y. R.
core   +1 more source

The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations

open access: yesNeotropical Ichthyology
The brain of Brycon orbignyanus is described as a model for future studies of the gross morphology of the central nervous system in Characiformes. The study of brain gross morphology of 48 distinct taxa of Characiformes, one of Cypriniformes, two of ...
Thiago N. A. Pereira   +1 more
doaj   +1 more source

Recent aspects on possible interrelation between precursory electric signals and anomalous bioeffects [PDF]

open access: yes, 2010
A possible geophysical mechanism based on the conception of criticality and on new aspects of biological effects caused by electromagnetic fields is discussed as a stimulus to the unusual animal behavior prior to large earthquakes.
E. Dologlou
core   +1 more source

Comparing lacustrine environments: the importance of the kind of habitat on the structure of fishes

open access: yesActa Limnologica Brasiliensia, 2018
Aim Fish diversity in two lentic environments: a lake connected (Barbosa lake) to a river and an artificial reservoir (Ninfeias reservoir) were determined in the dry and rainy periods in 2015. We expected to find more diversity in the connected lake and
Reinaldo José de Castro   +3 more
doaj   +1 more source

Lista de peces de la provincia de Entre Ríos [PDF]

open access: yes, 2013
Fil: Arias, José D.. Facultad de Ciencia y Tecnología. Universidad Autónoma de Entre Ríos; ArgentinaFil: Demonte, Lucio D.. Facultad de Humanidades y Ciencias. Universidad Nacional del Litoral; ArgentinaFil: Miquelarena, Amalia María.
Arias, José D.   +4 more
core  

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