Results 81 to 90 of about 4,670 (210)
Biotemas, 2016 This paper presents an allometric study of the length-weight relationship of Hoplias aff. malabaricus collected in the Chasqueiro Reservoir and Stream in southern Brazil. During the study, 112 specimens were collected with total lengths ranging from 124
Fabiano Corrêa +3 more
doaj +1 more source
Alimentação de duas espécies do gênero Pseudoplatystoma do Rio Negro, Pantanal da Nhecolândia, MS, Brasil. [PDF]
, 2011 Este trabalho investigou a dieta e reprodução de duas espécies de peixes Siluriformes migradores do rio Negro, Pantanal da Nhecolândia, sob a influência do pulso de inundação.
COSTA, F. E. dos S. +2 more
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Brazilian Journal of Biology, 2013 The oropharyngeal cavity of Hoplias malabaricus, an ichthyophagous freshwater fish, is anatomically adapted to predation. Macroscopic and microscopic analyses were conducted in order to study the morphology and system of implantation and replacement of teeth.
RM. Hassunuma +7 more
openaire +3 more sources
Environmental DNA, Volume 7, Issue 4, July–August 2025.Using eDNA metabarcoding, we assessed fish diversity in isolated sinkholes in southern Brazil, uncovering signs of local extinction and species persistence. This approach offers a non‐invasive tool for biodiversity assessment and informs conservation efforts in unique karst environments.
Luz E. De la Ossa‐Guerra +5 more
wiley +1 more source
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007 In order to investigate the prevalence of nematode larvae with zoonotical importance in trairas (Hoplias malabaricus), necropsy exams were done 30 specimes from Santo Antonio do Leverger, Mato Grosso, Brazil.
L.A. Barros +2 more
doaj +1 more source
Antagonistic Rewiring and Turnover Patterns in a Neotropical Fish–Parasite Metanetwork
Freshwater 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
Larger Fish Upstream: Testing the Drivers of Fish Longitudinal Size Distribution in a Stream
Freshwater Biology, Volume 70, Issue 7, July 2025.ABSTRACT The “larger fish upstream pattern” (LFUP), where fish size increases from river mouths toward headwaters, is widely documented, but the drivers remain unclear. Here, we tested whether LFUP is related to species reproductive strategies or environmental factors (differential growth, predation, competition). Using historical data (1994–1998) from
Pedro Wolf +2 more
wiley +1 more source
Metazoários parasitos de Hoplias malabaricus (Erythrinidae) da Bacia Igarapé Fortaleza, Estado do Amapá, Norte do Brasil. [PDF]
, 2017 PAR110
GONÇALVES, R. A. +3 more
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Traumas e envenenamentos por animais aquáticos em pescadores de Coxim e Corumbá, estado de Mato Grosso do Sul, Brasil : identificação de agentes causadores, aspectos clínicos e medidas de primeiros socorros [PDF]
, 2010 The fishes of continental Brazil have socioeconomic importance due to their potential for sport fishing and commercial and subsistence uses, as seen in the Upper Paraguay River Basin, particularly in the municipalities of the Pantanal region, where it is
Alho, Cleber José Rodrigues +4 more
core +4 more sources
Cambios estacionales de la densidad de peces en una laguna del valle aluvial del rio Parana (Argentina) [PDF]
, 1988 En aval du confluent du Parana et du Paraguay, les nombreuses espèces de poissons présentes (dont beaucoup d'intérêt commercial) accomplissent des migrations complexes, latérales et longitudinales, encore inexpliquées.
Oldani, N.O. +3 more
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