Results 101 to 110 of about 257 (114)
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Marine Biotechnology, 2009
The process of sex differentiation in fishes is regulated by genetic and environmental factors. The sex of Patagonian pejerrey (Odontesthes hatcheri) appears to be under strong genotypic control (GSD) because the sex ratios are balanced (1:1) between 17 degrees C and 23 degrees C. However, sex ratios become female-biased at
Nobuaki Okamoto +2 more
exaly +3 more sources
The process of sex differentiation in fishes is regulated by genetic and environmental factors. The sex of Patagonian pejerrey (Odontesthes hatcheri) appears to be under strong genotypic control (GSD) because the sex ratios are balanced (1:1) between 17 degrees C and 23 degrees C. However, sex ratios become female-biased at
Nobuaki Okamoto +2 more
exaly +3 more sources
FASEB Journal, 2012 We studied accumulation and biochemical effects of microcystin‐LR (MC) in the Patagonian silverside Odontesthes hatcheri after dietary administration of the cyanobacteria Microcystis aeruginosa (load~1.3 μg MC / g fish, incorporated in standard fish ...
Flavia Bieczynski
exaly +2 more sources
Heat-induced Germ Cell Deficiency in the Teleosts Odontesthes bonariensis and Patagonina hatcheri
Comparative Biochemistry and Physiology Part A, Molecular & Integrative Physiology, 1998Pathological or experimental elevation of testicular temperature is known to trigger degeneration and disappearance of germ cells in scrotal mammals. In contrast, there are no reports of heat-induced germ cell deficiency in males of non-scrotal mammals and other vertebrate taxa, nor in females of any species.
C A Strüssmann, F Takashima
exaly +3 more sources
Journal of Applied Ichthyology, 2000
Summary The hatching of fertilized eggs and the survival and growth of larvae and juveniles of the inland-water atherinids Odontesthes bonariensis (Valenciennes 1835) and O. hatcheri (Eigenmann 1909) were examined at salinities of 0, 5, 10, 20, and 30 ppt. In addition, a limited study compared the salinity responses of O. bonariensis eggs and larvae
C A Strüssmann, F Takashima
exaly +2 more sources
Summary The hatching of fertilized eggs and the survival and growth of larvae and juveniles of the inland-water atherinids Odontesthes bonariensis (Valenciennes 1835) and O. hatcheri (Eigenmann 1909) were examined at salinities of 0, 5, 10, 20, and 30 ppt. In addition, a limited study compared the salinity responses of O. bonariensis eggs and larvae
C A Strüssmann, F Takashima
exaly +2 more sources
The Journal of Experimental Zoology, 1997
Atherinidae is a family of fishes known to include at least three species with documented thermolabile sex determination. In Odontesthes bonariensis, fish exposed to about 17°C from hatching to juvenile stage become all-female, whereas groups exposed to about 25°C become male-biased.
F Takashima
exaly +2 more sources
Atherinidae is a family of fishes known to include at least three species with documented thermolabile sex determination. In Odontesthes bonariensis, fish exposed to about 17°C from hatching to juvenile stage become all-female, whereas groups exposed to about 25°C become male-biased.
F Takashima
exaly +2 more sources
Environmental Biology of Fishes, 1996
The present study investigated the effects of water temperature (18, 21, and 25 °C) on the histological process of gonadal sex differentiation of two commercially important atherinid fishes from South America, Odontesthes argentinensis (sea pejerrey) and Patagonina hatcheri (Patagonian freshwater pejerrey).
F Takashima, Strüssmann CARLOS A
exaly +2 more sources
The present study investigated the effects of water temperature (18, 21, and 25 °C) on the histological process of gonadal sex differentiation of two commercially important atherinid fishes from South America, Odontesthes argentinensis (sea pejerrey) and Patagonina hatcheri (Patagonian freshwater pejerrey).
F Takashima, Strüssmann CARLOS A
exaly +2 more sources
Aquaculture Research, 1997 This study reports the occurrence of spontaneous hybridization between Odontesthes bonariensis (Valenciennes, 1835) and Patagonina hatcheri (Eigenmann, 1909), two South American freshwater atherinids, while adults of both species were being held in a communal laboratory tank, and describes suitable genetic markers for distinction of both species and ...
G Yoshizaki, F Takashima
exaly +2 more sources
Theriogenology, 2009
Germ cell (GC) transplantation (GCT) is a novel reproductive technology with application in seed production and conservation of endangered species. This study examined the suitability of treatment with Busulfan, a cytotoxic agent, and warm water, known to cause GC degeneration, for depletion of endogenous GCs in sub-adult Patagonia pejerrey Odontesthes
Sullip Kumar Majhi +2 more
exaly +3 more sources
Germ cell (GC) transplantation (GCT) is a novel reproductive technology with application in seed production and conservation of endangered species. This study examined the suitability of treatment with Busulfan, a cytotoxic agent, and warm water, known to cause GC degeneration, for depletion of endogenous GCs in sub-adult Patagonia pejerrey Odontesthes
Sullip Kumar Majhi +2 more
exaly +3 more sources
Animal Genetics, 2010
SummaryThe Patagonian pejerrey Odontesthes hatcheri is an atherinopsid species presenting genotypic sex determination (GSD) at intermediate temperatures and temperature‐dependent sex determination at the low and high ranges of thermal tolerance. A recent study revealed the presence of a sex‐linked SNP marker in some males of this species, but a strain ...
R S, Hattori +5 more
openaire +2 more sources
SummaryThe Patagonian pejerrey Odontesthes hatcheri is an atherinopsid species presenting genotypic sex determination (GSD) at intermediate temperatures and temperature‐dependent sex determination at the low and high ranges of thermal tolerance. A recent study revealed the presence of a sex‐linked SNP marker in some males of this species, but a strain ...
R S, Hattori +5 more
openaire +2 more sources
2008
Four genes related to the process of sex differentiation were cloned and their expression analyzed during gonadal differentiation of Odontesthes hatcheri. SF1, P450aro and AMH presented one single copy whereas Dmrt1 presented three isoforms. Among the four genes, clear sexually dimorphic expression was observed for P450arom and AMH, with increased ...
Hattori, Ricardo S. +5 more
openaire +1 more source
Four genes related to the process of sex differentiation were cloned and their expression analyzed during gonadal differentiation of Odontesthes hatcheri. SF1, P450aro and AMH presented one single copy whereas Dmrt1 presented three isoforms. Among the four genes, clear sexually dimorphic expression was observed for P450arom and AMH, with increased ...
Hattori, Ricardo S. +5 more
openaire +1 more source