Results 1 to 10 of about 1,077 (99)

Effect of salinity on the oxygen consumption of larvae of the silversides Odontesthes hatcheri and O. bonariensis (Osteichthyes, Atherinopsidae)

open access: yesBrazilian Archives of Biology and Technology, 2008
Starved larvae of the silversides O. hatcheri (2- and 5-days-old) and Odontesthes bonariensis (5-days-old) were used to compare the oxygen consumption rates at 0, 5, 10, 20 and 30 ppt salinity. Oxygen consumption of O. hatcheri and O.
Mónica Yumi Tsuzuki
exaly   +4 more sources

Coexistence of genotypic and temperature-dependent sex determination in pejerrey Odontesthes bonariensis. [PDF]

open access: yesPLoS ONE, 2014
In this study, we examined whether a homolog of the master sex-determining gene amhy of Odontesthes hatcheri is present and plays any role in testis determination of pejerrey O.
Yoji Yamamoto   +4 more
doaj   +3 more sources

Surrogate production of eggs and sperm by intrapapillary transplantation of germ cells in cytoablated adult fish. [PDF]

open access: yesPLoS ONE, 2014
Germ cell transplantation (GCT) is a promising assisted reproductive technology for the conservation and propagation of endangered and valuable genetic resources.
Sullip Kumar Majhi   +3 more
doaj   +3 more sources

Physiological responses to salinity increases in the freshwater silversides Odontesthes bonariensis and O. hatcheri (Pisces, Atherinidae)

open access: yesRevista Brasileira De Oceanografia, 2000
Monica Y. Tsuzuki\ Hideki Aikawa2; Carlos A. Strussmann1 & Fumio Takashima1lTokyo UniversityofFisheries, Department of Aquatic Biosciences'(4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan)e-mail: monica_tsuzuki@hotmail.com2Inland Water Experimental Station,
Carlos A Strüssmann
exaly   +4 more sources

ASPECTOS REPRODUCTIVOS DEL PEJERREY PATAGÓNICO (Odontesthes hatcheri Eigenmann, 1909) EN EL EMBALSE EZEQUIEL RAMOS MEXIA (ARGENTINA) [PDF]

open access: yesRevista Mvz Cordoba, 2008
Objetivo. Estudiar el ciclo sexual y la fecundidad del pejerrey patagónico, especie de alto valor comercial y deportivo, en el embalse Ezequiel Ramos Mexía (Neuquén, Río Negro; Argentina). Materiales y métodos. Se colectaron 9307 ejemplares.
Alejandro Dománico A, Lauce Freyre R
doaj   +4 more sources

Accumulation and biochemical effects of microcystin-LR on the Patagonian pejerrey (Odontesthes hatcheri) fed with the toxic cyanobacteria Microcystis aeruginosa

open access: yesFish Physiology and Biochemistry, 2013
We studied accumulation and biochemical effects of microcystin-LR (MCLR) in Odontesthes hatcheri after dietary administration of the cyanobacteria Microcystis aeruginosa (1.3 μg MCLR/g body mass, incorporated in standard fish food).
Flavia Bieczynski, Carlos M Luquet
exaly   +3 more sources

Evidence for Countergradient Growth Adaptation and Jordan's Rule in a Southern Hemisphere Fish, the Atherinopsid <i>Odontesthes regia</i>. [PDF]

open access: yesEcol Evol
We performed common garden experiments on offspring of the sea silverside Odontesthes regia to characterize thermal growth reaction norms of different populations along the Chilean coast. This showed that the species exhibits local adaptation in the form of countergradient growth adaptation because higher‐latitude southern populations grew faster at ...
Baumann H   +7 more
europepmc   +2 more sources

Sex Determination in Sponges. [PDF]

open access: yesMol Reprod Dev
ABSTRACT Sex determination in Porifera remains one of the least understood aspects of early metazoan biology despite the group's key phylogenetic position. Sponges display exceptional diversity in sexual systems—ranging from stable gonochorism to sequential hermaphroditism and sex reversal—yet lack morphological dimorphism and any discrete gonadal ...
Lorente-Sorolla JM, Riesgo A.
europepmc   +2 more sources

Pejerrey (Odontesthes bonariensis) Under Siege: Main Infectious Diseases and Their Role in Aquaculture and Wild Populations Amidst Environmental Change. [PDF]

open access: yesJ Fish Dis
ABSTRACT The pejerrey (Odontesthes bonariensis) is a key species for recreational and commercial fisheries in Argentina and holds significant aquaculture potential. It has been introduced to various countries worldwide, including Japan, where intensive aquaculture has developed.
Torres-Martínez A   +4 more
europepmc   +2 more sources

The Duplicated Y-specific amhy Gene Is Conserved and Linked to Maleness in Silversides of the Genus Odontesthes. [PDF]

open access: yesGenes (Basel), 2019
Sex-determining genes have been successively isolated in several teleosts. In Odontesthes hatcheri and O. bonariensis, the amhy gene has been identified as a master sex-determining gene.
Hattori RS   +7 more
europepmc   +2 more sources

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