Results 61 to 70 of about 83,107 (225)

Integrative taxonomy reveals four new species of the armoured catfish genus Pareiorhina (Siluriformes: Loricariidae) from the upper Paraná River basin, Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract Four new species of the small‐sized armoured catfish genus Pareiorhina are described from mountain ranges in the Grande River drainage, upper Paraná River basin, based on morphological and molecular species delimitation methods. Molecular analyses based on the cytochrome oxidase subunit I (COI) marker recovered Pareiorhina as polyphyletic ...
Pedro L. C. Uzeda   +6 more
wiley   +1 more source

Ectoparasitos em hí­­brido tambatinga provenientes de piscicultura em tanque-rede no estado do Amapá (Brasil)

open access: yesBoletim do Instituto de Pesca, 2018
Foram avaliadas as infestações parasitárias em hí­­bridos tambatinga (Colossoma macropomum e Piaractus brachypomus) criados em tanque-rede no estado do Amapá, norte do Brasil. A boca, opérculos, brí­¢nquias e trato gastrointestinal de 50 espécimes foram
Marcos TAVARES-DIAS   +3 more
doaj  

Integrative taxonomy reveals two new species of whiptail catfishes Loricaria (Siluriformes: Loricariidae) from northeastern Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract Two new species of whiptail catfish, Loricaria (Siluriformes: Loricariidae), were discovered in the Munim and Itapecuru river basins, Maranhão State, northeastern Brazil, through an integrative taxonomic approach combining morphology and mitochondrial DNA.
Ananda. C. Serejo‐Saraiva   +4 more
wiley   +1 more source

Trabajos de la "Sociedad de Estudios de Patología Quirúrgica": el drenaje en cirugía general

open access: yesRevista de la Facultad de Medicina, 1932
"Llámase drenaje el procedimiento operatorio, por el cual el cirujanose propone mediante artificios apropiados, facilitar la salida de los líquidos acumulados en las cavidades naturales o accidentales del organismo y que son patológicos o pueden llegar a
Luis E. Cabrera G., Ignacio Ferreira
doaj  

¿Por qué son mejores los organismos de agua de Baja California que los de Sonora? Instituciones locales y desempeño de los organismos públicos

open access: yes, 2016
El desempeno de los principales organismos operadores de agua para uso urbano de Baja California, a juzgar por los indicadores de gestion, es superior al de los de Sonora.
N. P. Pablos, Hugo Briseño Ramírez
semanticscholar   +1 more source

A new sexually dimorphic species of the armoured catfish genus Neoplecostomus (Siluriformes: Loricariidae) from Neotropical Atlantic coastal drainages

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of the small‐sized armoured catfish genus Neoplecostomus is described from Neotropical Atlantic coastal drainages, in southeast Brazil. The new species can be readily diagnosed from all congeners by having the first plates of the ventral series reduced in size, rounded and ventrally displaced, resulting in a naked band between ...
Pedro L. C. Uzeda   +5 more
wiley   +1 more source

Del mecanicismo a la complejidad en la biología

open access: yesRevista de Biología Tropical, 2008
A través de la historia, los organismos vivos han sido estudiados desde diferentes puntos de vista. Presento tres etapas, la primera totalmente ligada al ambiente que rodea al ser humano, la segunda que se basa en las leyes de la química y la física, y ...
Libia Herrero Uribe
doaj  

Valor nutritivo de alimentos energéticos para a tilápia-do-nilo

open access: yesBoletim do Instituto de Pesca, 2016
O objetivo do presente trabalho foi determinar os coeficientes de digestibilidade aparente (CDA) da matéria seca (CDAms), energia bruta (CDAeb), proteí­­na bruta (CDApb), aminoácidos (CDAaa) e fósforo (CDAp) dos alimentos energéticos milho e farelos de ...
Rafael Lopes da SILVA   +5 more
doaj   +1 more source

Demography_Lab, an educational application to evaluate population growth: Unstructured and matrix models

open access: yesEcology and Evolution, 2021
Training in Population Ecology asks for scalable applications capable of embarking students on a trip from basic concepts to the projection of populations under the various effects of density dependence and stochasticity. Demography_Lab is an educational
Julio Arrontes
doaj   +1 more source

Ecotoxicidade de efluentes para organismos aquáticos

open access: yes, 2017
As analises fisico-quimicas geralmente empregadas para avaliar a qualidade do tratamento de efluentes nao sao suficientes para caracterizar a toxicidade do mesmo.
Letícia Amadeu Freddi   +1 more
semanticscholar   +1 more source

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