Results 41 to 50 of about 16,809 (196)

Impact and fracture analysis of fish scales from Arapaima gigas

open access: yesMaterials Science and Engineering: C, 2015
Fish scales from the Amazonian fish Arapaima gigas have been characterised to study their impact and fracture behaviour at three different environmental conditions. Scales were cut in two different directions to analyse the influence of the orientation of collagen layers.
Torres, F. G.   +2 more
openaire   +3 more sources

Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract [PDF]

open access: yesInternational Journal of Morphology, 2017
The present study describes the morphology and histology of the digestive tract of juvenile pirarucu, which is a Neotropical fish species with great potential for aquaculture in the Amazon region. Three size classes of pirarucu juveniles from commercial fish farms were sampled for histological examination of the oesophagus, stomach, pyloric caeca ...
Rodrigues, Ana Paula Oeda   +1 more
openaire   +2 more sources

Características bioquímicas e hematológicas do pirarucu Arapaima gigas Schinz, 1822 (Arapaimidae) de cultivo semi-intensivo na Amazônia Biochemical and hematological characteristics of the pirarucu Arapaima gigas Schinz, 1822 (Arapaimidae) from semi-intensive culture in the Amazon

open access: yesActa Amazonica, 2010
O presente estudo comparou os níveis plasmáticos de glicose, proteínas totais, uréia, triglicerídeos e colesterol, a contagem de eritrócitos, leucócitos e trombócitos entre alevinos e juvenis de Arapaima gigas (Osteoglociformes, Arapaimidae) de uma ...
Gustavo Valadares Fonseca Drumond   +4 more
doaj   +1 more source

Efeito da densidade de estocagem sobre a eficiência alimentar de juvenis de Pirarucu (Arapaima gigas) em ambiente confinado Stocking density effect on alimentary efficiency in juveniles pirarucu (Arapaima gigas) in a confined environment

open access: yesActa Amazonica, 2003
O objetivo deste trabalho foi verificar o efeito da densidade de estocagem sobre a eficiência alimentar de juvenis de pirarucu em tanques-rede de pequeno volume.
Bruno Adan Sagratzki Cavero   +5 more
doaj   +1 more source

Early evolution of the gular musculature and its innervation in ray‐finned fishes

open access: yesThe Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo   +4 more
wiley   +1 more source

Aquarium fisheries as a non-timber forest product: experiences from conservation through community development in North Rupununi District, Guyana [PDF]

open access: yes, 2007
Deforestation is one of the major global conservation issues. Solutions are being sought to tackle this ongoing forest loss, including establishment of initiatives to provide new sources of income for local communities that promote the sustainable use ...
Chin, Christopher, Bicknell, Jake E.
core  

Fish Scales: A Multifunctional Biomaterial from Nature

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Physicochemical and sensory characterization of three different portions from commercial pirarucu (Arapaima gigas) fillets

open access: yesBrazilian Journal of Food Technology, 2018
The objective of the present study was to investigate the relevant physicochemical and sensory parameters of three different Arapaima gigas muscle portions.
Júlia de Souza Lira Santos   +5 more
doaj   +1 more source

Is there a future for artisanal fishing in the Amazon? The case of Arapaima gigas

open access: yesManagement of Biological Invasions, 2020
Doria, Carolina Rodrigues da Costa, Catâneo, Dayana Tamiris Brito dos Santos, Torrente-Vilara, Gislene, Vitule, Jean Ricardo Simões (2020): Is there a future for artisanal fishing in the Amazon? The case of Arapaima gigas. Management of Biological Invasions 11 (1): 1-8, DOI: 10.3391/mbi.2020.11.1.01, URL: http://dx.doi.org/10.3391/mbi.2020.11.1 ...
Doria, Carolina Rodrigues da Costa   +3 more
openaire   +2 more sources

Tourism, human–wildlife interactions, and wildlife trade in the globalizing Amazon

open access: yesConservation Science and Practice, Volume 8, Issue 8, August 2026.
Tourism in the globalizing Peruvian Amazon contributes to harmful human–wildlife interactions and the wildlife trade, with tourists participating in activities such as handling wildlife, taking selfies with animals, purchasing live animals, and wild meat consumption.
Christian J. Rivera   +7 more
wiley   +1 more source

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