Results 31 to 40 of about 16,214 (207)

First record of Trachycephalus nigromaculatus (Amphibia, Anura, Hylidae) in the state of Piauí, Brazil [PDF]

open access: yesCheck List, 2019
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

open access: yesEcology and Evolution, Volume 13, Issue 10, October 2023., 2023
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]

open access: yesEcol Evol
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

Trophic ecology of the fish Leporinus piau (Characiformes: Anostomidae) in an area influenced by a dam in the Parnaíba River

open access: yes, 2020
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?

open access: yesSedimentology, Volume 70, Issue 4, Page 1110-1130, June 2023., 2023
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

Atividade de amilase em quimo de três espécies tropicais de peixes teleostei de água doce Amylase activity in the chyme of three teleostei freshwater fish

open access: yesRevista Brasileira de Zootecnia, 1999
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

Model-Driven Dependability and Power Consumption Quantification of Kubernetes-Based Cloud-Fog Continuum

open access: yesIEEE Access, 2023
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

Potencialidades e valorização da raça de suíno nativo Piau no contexto dos assentamentos de reforma agrária

open access: yes, 2020
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

Influência do nível hidrológico sobre a dieta de Leporinus reinhardtii (Characiformes, Anostomidae) em um reservatório do semiárido brasileiro

open access: yesIheringia: Série Zoologia, 2014
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]

open access: yes, 2015
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

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