Results 31 to 40 of about 16,214 (207)
First record of Trachycephalus nigromaculatus (Amphibia, Anura, Hylidae) in the state of Piauí, Brazil [PDF]
We present the first occurrence of Trachycephalus nigromaculatus Tschudi, 1838 in the state of Piauí. This new record is from southern Piauí and represents the northwestern known occurrence record of this species, expanding its ...
Renato Augusto Martins +1 more
doaj +3 more sources
DNA metabarcoding assessment of Neotropical ichthyoplankton communities is marker‐dependent
DNA metabarcoding has been applied as a rapid, cost‐effective, and accurate taxonomy tool, allowing the identification of multiple individuals simultaneously. The combined use of the three markers increased the genera detection rates by 25%–87.5%, allowing an increased taxonomic coverage and robust taxonomic identification of complex Neotropical ...
Daniel Fonseca Teixeira +3 more
wiley +1 more source
Genetic Insights Into Human-Driven Hybridization, Cultural Shifts, and Ecological Consequences of Feral Pigs (<i>Sus scrofa</i>) in Hawai'i. [PDF]
Polynesian pigs were brought to the Hawaiian Islands with Polynesian settlement in the mid‐1200s and represent part of the cultural legacy of Hawai‘i. Yet, the introduction of European pigs since 1778 and onward has put into question the ancestral composition of contemporary animals, and conservation efforts have been challenged by tension between the ...
Mangan AM +8 more
europepmc +2 more sources
Introduction: Hydroelectric dams have several impacts on migratory fish, such as decreasing their abundance, local extinctions, and changes in the assemblage structure.
F. Feitosa, C. F. Rezende
semanticscholar +1 more source
Does sand promote or hinder the mobility of cohesive sediment gravity flows?
ABSTRACT Sediment gravity flows exhibit a large range of flow behaviours, making their flow dynamics hard to predict and the resulting deposits a challenge to interpret. Cohesive sediment gravity flows containing clay are particularly complex, as their behaviour is controlled by the balance of turbulent and cohesive forces.
Megan L. Baker, Jaco H. Baas
wiley +1 more source
O objetivo deste trabalho foi determinar a atividade de amilase no quimo presente nos intestinos médio e posterior, ou reto, em três espécies tropicais de peixes Teleostei de água doce: piracanjuba, Brycon orbignyanus (Valenciennes, 1849), piau ...
José Teixeira de Seixas Filho +4 more
doaj +1 more source
System dependability is pivotal for the reliable execution of designated computing functions. With the emergence of cloud-fog computing and microservices architectures, new challenges and opportunities arise in evaluating system dependability.
Iure Fe +7 more
doaj +1 more source
A maior parte dos pequenos produtores rurais no Brasil tem em atividades de criação de suínos caipira uma alternativa para obtenção de alimento de alto valor nutritivo e de rentabilidade.
G. G. L. Araújo +6 more
semanticscholar +1 more source
A Região Neotropical possui um elevado número de espécies de peixes de água doce, cujas adaptações para explorar diferentes tipos de alimento é particularmente evidente em reservatórios, refletindo numa considerável plasticidade alimentar.
Tatiane N. Medeiros +3 more
doaj +1 more source
Seismic sensitivity to sub-surface solar activity from 18 years of GOLF/SoHO observations [PDF]
Solar activity has significantly changed over the last two Schwabe cycles. After a long and deep minimum at the end of Cycle 23, the weaker activity of Cycle 24 contrasts with the previous cycles.
Garcia, R. A. +2 more
core +3 more sources

