Results 41 to 50 of about 382 (165)
Ecología Austral, 2022 El pejerrey —Odontesthes bonariensis (Actinopterygii; Atherinopsidae)— es la especie más importante en las pesquerías de la Argentina por su amplia distribución, gran demanda y aporte de proteína.
Omar Del Ponti, Miguel Mancini
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General and Comparative Endocrinology, 2015 The endocrine mechanisms that regulate spermatogenesis and their interaction with environmental cues have been poorly studied compared with oogenesis in fish. The aim of this work was to study the spermatogenesis in pejerrey under the influence of photoperiod and water temperature fluctuation in the wild, evaluating the transcript levels of brain Gnrh ...
Elisio, Mariano +2 more
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Aquaculture Research, Volume 2025, Issue 1, 2025.Milt cryopreservation facilitates native fish’s constant production of commercial interest. However, it can damage spermatozoa (sptz) due to the osmotic stress of diluents and low temperatures. This study compares spermatic quality in fresh (SF) and cryopreserved (CS) milt in B. amazonicus for 24 h, 1 month, and 3 months.
Owens José Barros-Barrios +4 more
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Neotropical IchthyologyThe original distribution area of the Patagonian 'pejerrey' Odontesthes hatcheri has been subjected to the introduction of a related species; the Bonaerensean 'pejerrey' Odontesthes bonariensis. This species currently coexists with O.
Cecilia Conte-Grand +3 more
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Estrutura da comunidade de peixes da represa “Lago del Fuerte”, Tandil, Argentina
Acta Scientiarum: Biological Sciences, 2008 A represa “Lago del Fuerte” constitui um centro de atividades recreativas onde a pesca esportiva do peixe-rei Odontesthes bonariensis, espécie introduzida para tal fim, tem um lugar de importância.
Fabián Grosman
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Presence of 11-ketotestosterone in pre-differentiated male gonads of Odontesthes bonariensis
Fish Physiology and Biochemistry, 2012 The involvement of androgens during sex differentiation period was investigated in the pejerrey Odontesthes bonariensis, by classic biochemical studies and gonadal histology. We studied in particular whether the enzyme activities involved in 11-oxygenated androgen production were active in a gonadal/peritoneum complex (GPC) of very small larvae exposed
Blasco, Martín +2 more
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Aquaculture Research, Volume 2025, Issue 1, 2025.This study aimed to evaluate the effects of fish oil (FO) replacement by sunflower oil (SFO) on growth performance, serum biochemical indicators, antioxidant ability, lipid metabolism, and inflammation in juvenile large yellow croakers, Larimichthys crocea (LYC). Five formulated diets that varied in the replacement level of FO by SFO (0%, 25%, 50%, 75%,
Nur A Raushon +10 more
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Caracterización de la ictiofauna en la Laguna del Monte, provincia de Buenos Aires
Biología Acuática, 2019 The purpose of this study was to describe as well as to characterize the fish populations living in Del Monte lagoon, which belongs to the Encadenadas del Oeste system in the province of Buenos Aires, Argentina.
Marcelo G. Schwerdt +1 more
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Global population size and conservation priority areas for the endangered Titicaca grebe
The Journal of Wildlife Management, Volume 88, Issue 8, November 2024.The Titicaca grebe is an endangered endemic species found solely in Lake Titicaca, which has not had a population census in 20 years. We offer the first update of this species’ population since 2003, and show its population has increased, rather than suffered the decrease that had been assumed.
D. A. Villar +11 more
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Semiárida, 2020 La Formación Meauco, región medanosa del centro de La Pampa, tiene numerosas lagunas. Si bien existe información hidrológica, el conocimiento sobre sus características limnológicas es escaso.
Santiago Echaniz +3 more
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