Results 1 to 10 of about 27,844 (268)

Urophysial and pituitary extracts for spawning induction in teleosts Extratos urofisário e hipofisário para indução da desova em teleósteos

Ciência Rural, 2000
Several studies have suggested that the caudal neurosecretory system could act on fish reproduction. The aim of this study was to compare the effect of urophysial extract (UE) and carp pituitary homogenate (CPH) on the induction of spawning in Hoplias ...
Everton Rodolfo Behr, Bernardo Baldisserotto, Walter Garcia Parra, Deodoro Atlante Brandão, Zolst Herke   +4 more
doaj   +1 more source

Assessment of the impact of seasonal patterns climatic conditions on spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758) in astronomical and biological time

Acta Biologica Sibirica, 2018
This paper describes spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758 )in astronomical and biological time depending on seasonal patterns of climatic conditions.
D. Bondarev, O. Kunakh, O. Zhukov
doaj   +1 more source

Zebrafish Girella zebra (Richardson 1846): Biological Characteristics of an Unexploited Fish Population

Fishes
Kyphosids are prominent members of temperate and subtropical reef fish communities, though many species are not targeted due to their poor eating qualities. This study investigated the biology of the non-targeted zebrafish, Girella zebra, from waters off
Peter Graham Coulson
doaj   +1 more source

Reproductive biology of round sardinella (Sardinella aurita) in north-eastern Mediterranean

Scientia Marina, 2006
The reproductive biology of round sardinella, Sardinella aurita Valenciennes, 1847, was studied for the first time in the north-eastern Mediterranean Sea.
Athanassios C. Tsikliras, Efthimia Antonopoulou   +1 more
doaj   +1 more source

Gonad Status, Condition Index and Biochemical Composition of the Yellow Clam Amarilladesma mactroides

Fishes
The yellow clam, Amarilladesma mactroides, is an abundant component of the intertidal infauna of the southwestern Atlantic Ocean and an important source of food and income for local communities.
Melissa Herrera-Perez, Débora Machado Fracalossi, Virginia Fonseca Pedrosa, Renata Oselame Nobrega, José Maria Monserrat, Luis Alberto Romano, Ronaldo Olivera Cavalli   +6 more
doaj   +1 more source

Comportamiento reproductivo del pez Opistognathus rosenblatti (Perciformes: Opistognathidae) en cautiverio Reproductive behavior of Opistognathus rosenblatti (Perciformes: Opistognathidae) in captivity

Revista de Biología Tropical, 2012
El bocón manchas azules O. rosenblatti, es una especie endémica del Golfo de California con un elevado valor comercial, del cual existe poca información referente a su biología.
Mauricio Contreras, Benjamín Anguas, Pedro G. González, Rodolfo E. Martínez   +3 more
doaj  

Environmental DNA reveals the ecology and seasonal migration of a rare sturgeon species in the Ural River

Environmental DNA
Environmental DNA (eDNA) technology is an essential tool for monitoring living organisms in ecological research. The combination of eDNA methods with traditional methods of ecological observation can significantly improve the study of the ecology of rare
Gulmira Abileva, Ainur Turzhanova, Aizhan Zhamangara, Oxana Khapilina, Ruslan Kalendar   +4 more
doaj   +1 more source

The Impact of Increasing Seawater Temperatures over the Last 30 Years on the Reproductive Cycle of the Pearl Oyster Pinctada radiata (Leach, 1814) in the Arabian Gulf

Journal of Marine Science and Engineering
The pearl oyster Pinctada radiata (Leach, 1814), a crucial ecosystem builder in the Arabian Gulf, has experienced a significant decline, mainly attributed to anthropogenic pressures. This study aimed to characterize the reproductive cycle of P.
Razan Khalifa, Radhouane Ben Hamadou, Bruno Welter Giraldes, Sandra Joaquim, Zainab Hizam, Shafeeq Hamza, Anne Bassères, Jean-Charles Massabuau, Alexandra Leitão   +8 more
doaj   +1 more source

Burst swimming in sockeye salmon during their 1100 km upstream migration. [PDF]

Conserv Physiol
Birnie-Gauvin K, Robinson KA, Byrnes EE, Van Wert JC, Venditti JG, Cooke SJ, Eliason EJ, Patterson DA.   +7 more
europepmc   +1 more source

Regional fidelity vs dispersal of capelin (Mallotus villosus) in the Gulf of St. Lawrence, inferred from otolith chemistry. [PDF]

PLoS One
Jac R, Van Beveren E, Le Pape O, Boudreau M, Coussau L, Sirois P, Robert D, Brosset P.   +7 more
europepmc   +1 more source