Results 151 to 160 of about 608 (168)

Effects of Hypoxia on the Reproductive Endocrine Axis of the Pejerrey (Odontesthes Bonariensis)

Fish Physiology and Biochemistry
Recently, hypoxic areas have been identified in water bodies of the Pampas region due to human activity. The objective of this work was to study the effect of low concentrations of dissolved oxygen (hypoxia) on the reproductive endocrine axis of a pampas fish (Odontesthes bonariensis). Groups of 8 males and 8 females were subjected to severe hypoxia (2-
Carina Gisele Quesada, Leandro Andrés Miranda   +1 more
openaire   +3 more sources

Sex differentiation and hormonal feminization in pejerrey Odontesthes bonariensis

Aquaculture, 1996
Abstract An investigation was conducted on the histological process of gonadal sex differentiation and the suitability of steroid hormone administration for sex control in pejerrey, Odontesthes bonariensis . Light histological examination of the gonads of larvae and juvenile fish revealed that the primordial gonads were already formed at hatching ...
Carlos Augusto Strüssmann, Fumio Takashima, Kunio Toda   +2 more
openaire   +1 more source

Inferring boundaries among fish species of the new world silversides (Atherinopsidae; genus Odontesthes): new evidences of incipient speciation between marine and brackish populations of Odontesthes argentinensis

Genetica, 2019
Mariano González-Castro, Juan JOSÉ Rosso, Ezequiel Mabragaña   +2 more
exaly  

Hepatocyte nuclear size and nutritional condition of larval pejerrey, Odontesthes bonariensis (Cuvier et Valenciennes)

Journal of Fish Biology, 1990
C A Strüssmann, F Takashima
exaly  

Microsatellite loci isolated from Odontesthes argentinensis and the O. perugiae species group and their use in other South American silverside fish

Molecular Ecology, 2000
Luciano B Beheregaray, Paul Sunnucks
exaly  

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

Aquaculture Research, 2009
Ricardo Vieira Rodrigues, Luis André Sampaio   +1 more
exaly  

Nucleolar variation in response to nutritional condition in juvenile pejerrey Odontesthes bonariensis (Valenciennes)

Journal of Fish Biology, 2007
Pedro Carriquiriborde, F N Dulout
exaly  

Ontogenetic development and neuroanatomical localization of growth hormone‐releasing hormone (GHRH) in the brain and pituitary gland of pejerrey fish Odontesthes bonariensis

International Journal of Developmental Neuroscience, 2002
Leandro A Miranda, Pablo H Strobl-Mazzulla, Gustavo M Somoza   +2 more
exaly  

Fine-scale genetic structure, estuarine colonization and incipient speciation in the marine silverside fish Odontesthes argentinensis

Molecular Ecology, 2001
Luciano B Beheregaray, Paul Sunnucks
exaly  

Establishment of a strain inheriting a sex‐linked SNP marker in Patagonian pejerrey (Odontesthes hatcheri), a species with both genotypic and temperature‐dependent sex determination

Animal Genetics, 2010
Ricardo Shohei Hattori, Masashi Yokota, C A Strüssmann   +2 more
exaly