Results 31 to 40 of about 749 (138)

Survival and Growth of Juvenile Marine Pejerrey, Odontesthes argentinensis, Reared at Different Temperatures

open access: yesJournal of the World Aquaculture Society, 2010
The aim of this study was to evaluate the effects of temperature on survival and growth of juvenile marine pejerrey, Odontesthes argentinensis. Juveniles were randomly distributed into plastic tanks (100 L) with 50 juveniles per tank. The growth experiment was carried out at four temperatures: 20, 23, 26, and 29 C with triplicate tanks for each ...
Danilo Pedro Streit   +4 more
openaire   +1 more source

Otolith and vertebral morphology of marine atherinid species (Atheriniformes, Atherinopsidae) coexisting in the southwestern Atlantic Ocean

open access: yesCiencias Marinas, 2010
Studies on marine ecosystems rely on the identification of fish prey species of piscivores (fish, aquatic mammals, and aquatic birds) based on their bones and otoliths. The stomach contents of piscivores show predation on marine atherinids of commercial
A D Tombari   +3 more
doaj   +1 more source

Feeding habits of the flounder Paralichthys orbignyanus (Valenciennes, 1842) in a shallow coastal lagoon of the southern Atlantic Ocean: Rocha, Uruguay

open access: yesCiencias Marinas, 2004
 A total of 293 stomachs of adult flounders, Paralichthys orbignyanus, were analyzed from the catch of artisanal fisheries that operate in Rocha Lagoon, Uruguay.
Walter Norbis, Oscar Galli
doaj   +1 more source

Effects of photoperiod on survival and growth of the marine pejerreyOdontesthes argentinensislarvae

open access: yesAquaculture Research, 2009
The marine pejerrey Odontesthes argentinensis (Valenciennes) is an important commercial species in southern South America, and its culture is considered to be promising (Sampaio 2006). It is distributed in coastal and estuarine waters from the south of Brazil toArgentina (Dyer 2006).
Luciano Siqueira Freitas   +4 more
openaire   +1 more source

Feeding of Hoplias aff. malabaricus (Bloch, 1794) and Oligosarcus robustus Menezes, 1969 in a lagoon under estuarine influence, Pelotas, RS [PDF]

open access: yesBiotemas, 2009
The objective of the present paper was to study the diets of Hoplias aff. malabaricus and Oligosarcus robust in “Pequena Lagoon” and evaluate the importance of estuarine organisms in the feeding of freshwater fish.
Fabiano Corrêa   +1 more
doaj  

Environmental variables, habitat discontinuity and life history shaping the genetic structure of Pomatoschistus marmoratus [PDF]

open access: yes, 2014
Coastal lagoons are semi-isolated ecosystems exposed to wide fluctuations of environmental conditions and showing habitat fragmentation. These features may play an important role in separating species into different populations, even at small spatial
A Pérez-Ruzafa   +119 more
core   +3 more sources

Organização trófica da assembleia de peixes de uma lagoa costeira subtropical, Santa Catarina, Brasil [PDF]

open access: yes, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-graduação em Ecologia, Florianópolis, 2013O presente estudo teve como objetivo investigar a organização trófica da assembleia de peixes da ...
Sticca, Sarah Carvalho
core  

Análisis poblacional morfométrico y genético, áreas de solapamiento y distribución de los pejerreyes de la Provincia Parano-Platense (Atheriniformes, Atherinopsidae) [PDF]

open access: yes, 2020
Para la Argentina, han sido citadas cinco especies continentales del género Odontesthes: O. bonariensis, O. hatcheri, O. humensis, O. perugiae y O. retropinnis.
Cuello, Mariela Vanesa
core   +1 more source

Effect of photoperiod on some biological parameters of Clarias gariepinus juvenile [PDF]

open access: yes, 2012
Photoperiod effect on Growth parameters and cannibalism of Clarias gariepinushave been well documented in resent past, but little is known about the response of other biological parameters such as, Condition factor, Shooters composition, Body ...
Okomoda V. T., Solomon S. G.
core  

Concentração letal (CL50) de amônia não ionizada para larvas de peixe-rei em exposição aguda [PDF]

open access: yes, 2006
Ammonia results from decomposition of effluents organic matter, e.g. feed wastes and fish faeces. Its un-ionized form can be toxic because diffuses easily through fish respiratory membranes, damaging gill epithelium and impairing gas exchanges.
Cardoso, Daniela Fençon   +3 more
core   +2 more sources

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