Results 71 to 80 of about 1,763 (196)

La pêche crevettière de Macrobrachium amazonicum (Palaemonidae) dans le Bas-Tocantins après fermeture du barrage de Tucurui (Brésil) [PDF]

open access: yes, 1987
En septembre 1984, le grand barrage de Tucuri (Para, Brésil) a été fermé sur le Tocantins, dernier affluent de la rive droite de l'Amazone. La crevette #Macrobrachium amazonicum$ (Heller, 1862) exploitée artisanalement avec des casiers, des palissades et
Odinetz Collart, Olga
core  

Exploring Marine Mammal Cognition as a Conservation Tool

open access: yesMarine Mammal Science, Volume 42, Issue 1, January 2026.
ABSTRACT Cognition is an animal's real‐time adaptation system for responding to change. Rapid environmental change, often anthropogenic, is expanding the range and severity of challenges confronting wild animals. Effective conservation requires a multifaceted approach that includes animals' capacities.
Gordon B. Bauer   +21 more
wiley   +1 more source

Nitrogen Budget in Yellow-Tail Lambari Monoculture and Integrated Aquaculture

open access: yesFishes
This study quantified nitrogen (N) inputs by water, feed, animals, and atmospheric gas and outputs by water, harvested animals, sediments, and gas emissions in earthen ponds used for the monoculture and integrated cultures of yellow-tail lambari ...
Dalton Belmudes   +7 more
doaj   +1 more source

Effect of tank colour on larval performance of the Amazon River prawnMacrobrachium amazonicum

open access: yesAquaculture Research, 2012
The aim of this study was to evaluate the effects of hatchery-tank colours (white, yellow, red, blue, green and black) on the performance of larval culture of Macrobrachium amazonicum. The larvae were fed daily with newly hatched Artemia nauplii. The hatchery-tank colours affected the light level inside the tanks, the consumption of Artemia nauplii (AN)
Maciel, Cristiana Ramalho   +1 more
openaire   +2 more sources

Chemical Composition, Antioxidant, and Antibacterial Activities of Mezilaurus duckei (Lauraceae)

open access: yesChemistry &Biodiversity, Volume 22, Issue 12, December 2025.
ABSTRACT Mezilaurus duckei, a Brazilian endemic tree species found exclusively in the Amazon Rainforest, is primarily exploited for timber in construction. Due to its endangered status, this study aimed to investigate the chemical profile and biological properties of the ethanolic extract and its phases derived from M. duckei leaves. Chemical profiling
Bruna S. Moroto   +7 more
wiley   +1 more source

The influence of environmental variables in the reproductive performance of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) females in a continental population

open access: yesAnais da Academia Brasileira de Ciências
Macrobrachium amazonicum is a commercially important freshwater prawn with a high degree of reproductive plasticity. The species is classified into two groups: coastal populations, with larger individuals exhibiting high fecundity and needing brackish ...
JOÃO ALBERTO F. PANTALEÃO   +3 more
doaj   +1 more source

Величина пищевого рациона и его усвояемость у десятиногих ракообразных [PDF]

open access: yes, 2014
Десятиногие ракообразные (отряд Dekapoda) являются важнейшими элементами пищевых цепей водных экосистем. Это ресурсные виды, которые традиционно ценятся на внутреннем и особенно мировом рынке как превосходный деликатесный продукт питания, а также сырье ...
Кулеш, Виктор Федорович
core  

Dead Shrimp Blues: A Global Assessment of Extinction Risk in Freshwater Shrimps (Crustacea: Decapoda: Caridea) [PDF]

open access: yes, 2015
We present the first global assessment of extinction risk for a major group of freshwater invertebrates, caridean shrimps. The risk of extinction for all 763 species was assessed using the IUCN Red List criteria that include geographic ranges, habitats ...
Adeler, Nils A.   +13 more
core   +4 more sources

Constructed wetlands for treatment of harvest effluents from grow-out ponds of the Amazon river prawn

open access: yesAquaculture Research, 2014
Effluent discharges from aquaculture can reduce water quality in receiving water bodies and that strategies or practices to reduce this are necessary. One possibility is to reduce, or eliminate, water renewal in grow-out ponds. In this study, we eliminated water renewal in grow-out ponds associated with the culture of 40 individuals m−2 of Amazon river
Oliveira Santos, Alexandre Augusto   +1 more
openaire   +2 more sources

Insights Into the Comprehensive Carbon Cycle in a Mangrove Ecosystem: A Case Study for Understanding Carbon Burial, Outgassing, and Outwelling in a Subtropical Island

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 130, Issue 12, December 2025.
Abstract A significant quantity of soil organic carbon (SOC) is buried in mangrove ecosystems. However, recent research has revealed that substantial amounts of carbon are exported to the atmosphere as CO2 or to the ocean as dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), and particulate organic carbon (POC).
Wataru Nakamura   +8 more
wiley   +1 more source

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