Results 81 to 90 of about 378 (145)

Long‐term interventions by conservation and development projects support successful recovery of tropical peatlands in Amazonia

open access: yesPeople and Nature, Volume 7, Issue 4, Page 871-886, April 2025.
Abstract Rural communities in Amazonia rely on harvesting Mauritia flexuosa fruit, a dominant peatland palm, for their subsistence and income. However, these palms are felled to harvest the fruits, which has led to reduced resource availability due to the pressure exerted by the increasing fruit demand.
Eurídice N. Honorio Coronado   +24 more
wiley   +1 more source

Tometes camunani (Characiformes: Serrasalmidae), a new species of phytophagous fish from the Guiana Shield, rio Trombetas basin, Brazil

open access: yesNeotropical Ichthyology
A new species of Serrasalmidae, Tometes camunani, is described from the upper drainages of the rio Trombetas basin, Pará State, Brazil. The new species is distinguished from its congeners by having neurocranium with a slight concavity at the level of the
Marcelo C. Andrade   +2 more
doaj   +1 more source

Isonebula clavuslongus n. sp. (Isopoda: Cymothoidae) parasitizing Myloplus ternetzi (Norman, 1929), a fish of the family Serrasalmidae, in the Brazilian Amazon region [PDF]

open access: yesAnais da Academia Brasileira de Ciências
Crustaceans of the family Cymothoidae are important components of the invertebrate fauna of marine and freshwater environments. The genus Isonebula Taberner, 1977, has only two described species (Isonebula maculatus (Taberner, 1977) and Isonebula ...
MARCOS SIDNEY B. OLIVEIRA   +4 more
doaj   +1 more source

Estimated and in vivo measurements of bite force demonstrate exceptionally large bite forces in parrots (Psittaciformes)

open access: yesJournal of Anatomy, Volume 246, Issue 2, Page 299-315, February 2025.
Bite force in parrots has been explored using data from muscle masses. The values were validated by comparison with data for bite force collected from live parrots. The parrot's reputation for a strong bite force is well founded. Abstract Jaw morphology and function determine the range of dietary items that an organism can consume.
Shannon L. Harrison   +3 more
wiley   +1 more source

Argulus elongatus (Branchiura, Argulidae) in fish in the upper São Francisco river, Brazil

open access: yesRevista Brasileira de Parasitologia Veterinária
Among 164 fish from the upper São Francisco river, caught in the Três Marias reservoir (18º 12’ 59” S; 45º 17’ 34” W) or downstream from this reservoir (18º 12’ 32” S; 45º 15’ 41” W) in 2007, 2008, 2016 and 2017, four specimens of Argulus elongatus ...
Rayane Duarte   +4 more
doaj   +1 more source

METAZOÁRIOS PARÁSITOS DE SERRASALMUS ALTISPINIS (SERRASALMIDAE) DE LAGOS INUNDABLES DE LA AMAZONÍA BRASILEÑA

open access: yesNeotropical Helminthology, 2018
Este trabajo describe la fauna parasitaria de Serrasalmus altispinis Merckx, Jégu y Santos, 2000 provenientes de lagos inundables de la Amazonía brasileña. Todas las especies identificadas representan los primeros registros para este hospedero. Los lagos estudiados fueron: Baixio, Preto, São Tomé, Ananá, Araçá y Maracá, localizados entre las ciudades ...
Germán Augusto Murrieta Morey   +1 more
openaire   +2 more sources

Régime alimentaire de deux espèces d'Acnodon (Characiformes, Serrasalmidae) et habitudes lepidophages de A. normani

open access: yes, 1990
Les régimes alimentaires d’Acnodon normani Gosline, 1951 du rio Tocantins (Brésil, Pará) et d’Acnodon senai Jégu & Santos, 1990 du rio Jari (Brésil, Amapá) ont été déterminés à partir de l’analyse de 17 contenus stomacaux pour chacune des deux espèces.
Leite, R.G., /Jégu, Michel
openaire   +2 more sources

Structural features of the saccus vasculosus in red-bellied pacu, Piaractus brachypomus (Cuvier, 1818)

open access: yesJournal of Basic and Applied Zoology
Background The saccus vasculosus is a specialized ependymal organ, found exclusively in osteichthyes and chondrichthyes, and is located on the ventral surface of the diencephalon, posterior to the hypophysis.
Saroj Kumar Ghosh
doaj   +1 more source

Parasites and diet of Serrasalmus maculatus in a hydroelectric reservoir in Brazil. [PDF]

open access: yesRev Bras Parasitol Vet, 2022
Miguel BDS   +5 more
europepmc   +1 more source

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