Results 71 to 80 of about 1,536 (185)

Recomendações técnicas para elaboração da silagem de camarão marinho. [PDF]

open access: yes, 2011
bitstream/item/39200/1/CIR49 ...
FOGAÇA, F. H. dos S.
core  

Impoundments facilitate a biological invasion: Dispersal and establishment of non-native armoured catfish Loricariichthys platymetopon (Isbrückler & Nijssen, 1979) in a neotropical river. [PDF]

open access: yes, 2016
Where dam construction eliminates natural barriers to fish movement between previously disconnected catchments then this presents an opportunity for the movement of species between previously discrete assemblages.
Agostinho   +29 more
core   +1 more source

Sound production in the Meagre, Argyrosomus regius (Asso, 1801): intraspecific variability associated with size, sex and context [PDF]

open access: yes, 2020
Many fish taxa produce sound in voluntary and in disturbance contexts but information on the full acoustic repertoire is lacking for most species. Yet, this knowledge is critical to enable monitoring fish populations in nature through acoustic monitoring.
Amorim, Maria Clara P.   +6 more
core   +3 more sources

Transferrin polymorphism in Central Amazon populations of pescada, Plagioscion squamosissimus.

open access: yesGenetics and molecular research : GMR, 2004
Blood plasma of 253 specimens from eight population samples of the sciaenid fish, pescada (Plagioscion squamosissimus), caught from four sites in the Central Amazon, was tested for molecular variants of transferrin. Starch gel electrophoresis was used to distinguish six species of transferrin molecules; 12 of the 21 theoretically possible genotypes ...
Teixeira, Aylton Saturnino   +2 more
openaire   +1 more source

Infection by Austrodiplostomum compactum metacercariae in fish from the Nova Avanhandava reservoir, Tietê river, São Paulo State, Brazil = Infecção por metacercárias de Austrodiplostomum compactum em peixes do Reservatório de Nova Avanhandava, rio Tietê, Estado de São Paulo, Brasil

open access: yesActa Scientiarum: Biological Sciences, 2010
This study aimed to evaluate the infection by the Austrodiplostomum compactum metacercariae in fishes from the Nova Avanhandava Reservoir, low Tietê river, São Paulo State, Brazil. The parasites were collected from eye (aqueous and vitreous humor), fixed
Jaciara Vanessa Krüger Paes   +2 more
doaj  

Effects of light-dark cycle on the spatial distribution and feeding activity of fish larvae of two co-occurring species (Pisces: Hypophthalmidae and Sciaenidae) in a Neotropical floodplain lake

open access: yesBrazilian Journal of Biology, 2018
Most studies on mechanisms regulating fish larvae processes have focused on assessing the isolated effects of food distribution and feeding behavior. However, in natural ecosystems, fish larvae may strongly interact with zooplankton organisms in an array
P. H. S. Picapedra   +2 more
doaj   +1 more source

Les stratégies de reproduction et les premiers stades de vie des poissons du fleuve Sinnamary (Guyane française) : une revue bibliographique [PDF]

open access: yes, 1994
Le barrage hydro-électrique de Petit-Saut, construit par Electricité de France sur le fleuve Sinnamary en Guyane française, a été fermé en janvier 1994. Cet ouvrage a profondément modifié un milieu dont les éléments avaient co-évolué depuis de nombreuses
Ponton, Dominique, Tito de Morais, Luis
core  

Desenvolvimento ovariano de Plagioscion squamosissimus (Heckel, 1840) (Actinopterygii, Perciformes), no reservatório de Pedra, Rio de Contas, Bahia [PDF]

open access: yesBiota Neotropica, 2009
O presente estudo tem por objetivo caracterizar a organização dos ovócitos e os estádios maturacionais do ovário da pescada Plagioscion squamosissimus. As coletas foram realizadas bimestralmente no reservatório de Pedra, rio de Contas (BA), entre novembro de 2004 e setembro de 2006.
Félix, Renata Triane da Silva   +5 more
openaire   +3 more sources

Dinâmica trófica de Plagioscion squamosissimus (Perciformes, Sciaenidae) em trechos de influência da represa Capivara (rios Paranapanema e Tibagi) Trophic dynamic of Plagioscion squamosissimus (Perciformes, Scianidae) in stretches under influence of the Capivara dam (Paranapanema and Tibagi rivers)

open access: yesIheringia: Série Zoologia, 2006
Plagioscion squamosissimus (Heckel, 1840) foi estudada em cinco trechos de influência da represa Capivara nos rios Paranapanema e Tibagi. As amostragens foram realizadas em dois períodos, 1992/1993 e 1994/1995, em coletas mensais, e sazonalmente no ...
Sirlei T. Bennemann   +3 more
doaj   +1 more source

Contaminação por metais pesados em peixes e água da bacia do rio Cassiporé, Estado do Amapá, Brasil [PDF]

open access: yesActa Amazonica, 2015
A participação dos metais pesados nas reações químicas do metabolismo dos peixes tornou esses elementos um dos principais focos nos estudos de contaminação.
Daniel Pandilha de LIMA   +4 more
doaj   +2 more sources

Home - About - Disclaimer - Privacy