Results 31 to 40 of about 6,100 (186)

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga   +4 more
wiley   +1 more source

MACROALGAS E QUALIDADE DA ÁGUA NA BACIA DO ALTO RIO NEGRO - MUNICÍPIO DE SÃO GABRIEL DA CACHOEIRA (AM).

open access: yesCaminhos de Geografia, 2011
Foram investigadas as comunidades de macroalgas do rio Negro, no município de São Gabriel da Cachoeira. Em setembro/2007 foram visitados cinco sítios amostrais, próximos à sede da cidade; em Março/2008 foram investigados oito sítios amostrais, entre a ...
Domitila Pascoaloto   +1 more
doaj  

Biochemical Studies and Production Optimization of β‐Glucosidase From Microcystis aeruginosa CACIAM 03 Using Organic Waste

open access: yesBiotechnology and Applied Biochemistry, EarlyView.
ABSTRACT Global warming and industrial pollutants pose significant threats to environmental sustainability. In response, enzymes have emerged as promising tools for mitigating pollution. Enzymatic hydrolysis is considered environmentally sustainable due to its biological nature.
Gustavo Marques Serra   +4 more
wiley   +1 more source

O efeito da floresta alagada na alimentação de três espécies de peixes onívoros em lagos de várzea da Amazônia Central, Brasil Effects of flooded forest in the diet of three fish species in floodplain lakes of Central Amazon, Brazil

open access: yesActa Amazonica, 2004
As enchentes anuais dos rios na Amazônia alagam extensas áreas de floresta conhecidas como várzeas ou igapós. Estas áreas têm papel importante na vida dos peixes da região, pois são fontes de alimento e de abrigo.
Luiz Claro-Jr   +3 more
doaj   +1 more source

Fluorescence Behavior of Water‐Soluble Porphyrins Immobilized on LTA Zeolite and Its Chlorogenic Acid Polyphenol Sensing in Coffee Wastewater

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
During coffee bean and cherry washing, contaminants are released into water, making this process a major source of water pollution. Chlorogenic acid can be efficiently detected using hybrid zeolite–porphyrin materials by measuring fluorescence quenching, achieving detection limits lower than current regulatory thresholds.
João Otávio Donizette Malafatti   +10 more
wiley   +1 more source

Microsatellite data suggest significant population structure and differentiation within the malaria vector Anopheles darlingi in Central and South America

open access: yesBMC Ecology, 2008
Background Anopheles darlingi is the most important malaria vector in the Neotropics. An understanding of A. darlingi's population structure and contemporary gene flow patterns is necessary if vector populations are to be successfully controlled.
Achee Nicole L   +7 more
doaj   +1 more source

Urbanization and food transition in the Brazilian Amazon: From wild to domesticated meat

open access: yesPeople and Nature, EarlyView.
Abstract Urbanization is expected to influence food transitions, resulting in a shift from wild foods to more domesticated foods. Concomitantly, food insecurity and urban demand for natural resources, including wildlife, are expected to increase overall, even when the per capita consumption is expected to decrease.
Willandia A. Chaves   +7 more
wiley   +1 more source

Gender dynamics of tropical wildmeat systems: A systematic map of women's roles and influence

open access: yesPeople and Nature, EarlyView.
Abstract Wildmeat is a vital natural resource globally, which must be managed sustainably to avoid livelihood insecurity, species decline and biodiversity loss. Women have a pivotal role in harvesting, processing and distributing wildmeat, yet their contributions are often overlooked.
Jasmin Willis Key   +12 more
wiley   +1 more source

Origin and Dispersal of Domesticated Peach Palm

open access: yesFrontiers in Ecology and Evolution, 2017
Peach palm (Bactris gasipaes Kunth) is a Neotropical palm domesticated by Native Americans. Its domestication resulted in a set of landraces (var. gasipaes), some with very starchy fruit used for fermentation, others with an equilibrium of starch and oil
Charles R. Clement   +8 more
doaj   +1 more source

Do cultural taboos regulate hunting in transitioning Indigenous communities? The case of the Idu Mishmi of Northeast India

open access: yesPeople and Nature, EarlyView.
Abstract There is rising recognition of resource‐use rights of Indigenous Peoples and Local Communities (IPLCs) within wildlife conservation. Historically, sociocultural institutions ensured wildlife sustainability in many IPLC areas. However, the future viability of such institutions is uncertain as IPLCs change in response to external pressures and ...
Sahil Nijhawan   +5 more
wiley   +1 more source

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