Results 81 to 90 of about 3,959 (200)

Does stress make males? An experiment on the role of glucocorticoids in anuran sex reversal

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 341, Issue 2, Page 172-181, March 1, 2024.
Abstract Environmentally sensitive sex determination may help organisms adapt to environmental change but also makes them vulnerable to anthropogenic stressors, with diverse consequences for population dynamics and evolution. The mechanisms translating environmental stimuli to sex are controversial: although several fish experiments supported the ...
Veronika Bókony   +8 more
wiley   +1 more source

Desarrollo de la sagitta en juveniles y adultos de Odontesthes argentinensis (Valenciennes, 1835) y O. bonariensis (Valenciennes, 1835) de la provincia de Buenos Aires, Argentina (Teleostei: Atheriniformes) Development of the sagitta in young and adults of Odontesthes argentinensis (Valenciennes, 1835) and Odontesthes bonariensis (Valenciennes, 1835) from Buenos Aires province, Argentina (Teleostei: Atheriniformes)

open access: yesRevista Chilena de Historia Natural, 2005
Se describió el desarrollo del otolito Sagitta de juveniles y adultos de Odontesthes argentinensis procedentes de Punta Rasa (36°22' S) y Miramar (38°16' S) y de Odontesthes bonariensis de la Laguna de Chascomús (35° 36' S).
ANDREA D TOMBARI   +2 more
doaj  

Odontesthes hatcheri, Pejerrey patagónico

open access: yes, 2022
Fil: Cussac, Victor Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue.
openaire   +1 more source

Bibliografía de los peces de agua dulce de Argentina. Suplemento : Suplemento 1996-2002 [PDF]

open access: yes, 2003
Fil: López, Hugo Luis. División Zoología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Menni, Roberto Carlos. División Zoología Vertebrados. Facultad de Ciencias Naturales y Museo.
López, Hugo Luis   +2 more
core  

Seasonal variation of parasitism in pejerrey Odontesthes bonariensis (Atheriniformes, Atherinopsidae) from La Viña reservoir (Córdoba, Argentina) Variação sazonal do parasitismo em Peixe-rei Odontesthes bonariensis (Atheriniformes, Atherinopsidae) no reservatório La Viña, Córdoba, Argentina

open access: yesRevista Brasileira de Parasitologia Veterinária, 2008
The pejerrey Odontesthes bonariensis is the most important freshwater fish of Argentina central region. The present study was conducted to describe the seasonal variation of parasitism in O.
Miguel Mancini   +5 more
doaj   +1 more source

Bibliografía de los peces de agua dulce de la Argentina Suplemento 1996-2002. [PDF]

open access: yes, 2003
Between 1981 and 1995, we published five bibliographic lists (López et al., 1981, 1982,1987, 1989 y 1995) that included the publications referred to Argentine freshwater fishes and related general information published since Ringuelet et al. (1967).
Battistoni, Patria A.   +3 more
core  

The distribution of estuarine fish larvae: nutritional condition and co-occurrence with predators and prey [PDF]

open access: yes, 2000
Fish larvae were collected monthly between March and September 1997 in the Mira and Guadiana estuaries (southern Portugal). Hydrological parameters were registered and zooplankton samples were obtained simultaneously. Densities of fish larvae (ind.100 m(-
Antunes   +82 more
core   +2 more sources

Glycoproteins histochemistry of the gills of Odontesthes bonariensis (Teleostei, Atherinopsidae)

open access: yesJournal of Fish Biology, 2010
The histochemistry of glycoproteins (GP) in the mucous cells of the gills of the silverside Odontesthes bonariensis was identified with: (1) oxidizable vicinal diols; (2) sialic acid and some of their chain variants, carbon 7 (7C), carbon 8 (8C) or carbon 9 (9C); (3) sialic acid residues without O‐acyl substitution and with O‐acyl substitution at 7C ...
Díaz, Alcira Ofelia   +3 more
openaire   +3 more sources

Observations on the Infection by Kudoa sp. (Myxozoa, Multivalvulida) in fishes caught off Rio Grande, Rio Grande do Sul State, Brazil

open access: yesActa Scientiarum: Biological Sciences, 2016
It is reported the parasitization of Kudoa sp. (Myxozoa, Multivalvulida) within the somatic muscles of the fish Odontesthes bonariensis (Valenciennes, 1835), Micropogonias furnieri (Desmarest, 1823) and Mugil liza Valenciennes, 1836, captured off Rio ...
Jorge Costa Eiras   +3 more
doaj   +1 more source

Posibles causas de una mortandad de pejerrey, Odontesthes bonariensis, en la Laguna del Monte [PDF]

open access: yes, 2005
Between the 18 and 20 of April of 1998 a silvers side fish kill was observed in Monte urban shallow lake. Rains preceded the phenomenon without being observed lake water level variations, but iridescence in the surface was noticed.
Cornejo, Alejandra   +3 more
core  

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