Results 141 to 150 of about 559 (168)
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 ...
Mariano Elisio +2 more
exaly +4 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Comparative Biochemistry and Physiology Part A, Molecular & Integrative Physiology, 2014
The goal of this study was to evaluate the essential components controlling the brain-pituitary-gonad axis during pejerrey (Odontesthes bonariensis) oogenesis in the wild. Ovarian developmental stages from vitellogenesis up to ovulation were associated with increasing day length and water temperatures below 21°C (winter and beginning of spring ...
Mariano Elisio +2 more
exaly +4 more sources
The goal of this study was to evaluate the essential components controlling the brain-pituitary-gonad axis during pejerrey (Odontesthes bonariensis) oogenesis in the wild. Ovarian developmental stages from vitellogenesis up to ovulation were associated with increasing day length and water temperatures below 21°C (winter and beginning of spring ...
Mariano Elisio +2 more
exaly +4 more sources
Effects of Hypoxia on the Reproductive Endocrine Axis of the Pejerrey (Odontesthes Bonariensis)
Fish Physiology and BiochemistryRecently, 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 +1 more
openaire +3 more sources
Digestive enzyme activities during pejerrey (Odontesthes bonariensis) ontogeny
Aquaculture, 2020info:eu-repo/semantics ...
Mikhail M Solovyev +2 more
exaly +4 more sources
Pejerrey Odontesthes bonariensis
2017Pejerrey Odontesthes bonariensis was reared in the recirculation system for 1 year. The system consisted of two particle-trap equipped octagonal tanks (0.75 m3) for the rapid collection of feces and uneaten feed, a mechanical filter, a UV unit, a biological filter which provided nitrification, and a hollow-fiber oxygen injection system.
openaire +1 more source
Sex differentiation and hormonal feminization in pejerrey Odontesthes bonariensis
Aquaculture, 1996Abstract 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 +2 more
openaire +1 more source
Comparative Biochemistry and Physiology Part - C: Toxicology and Pharmacology, 2006
Growth hormone is an essential polypeptide required for normal growth and development of vertebrates. The pejerrey fish, Odontesthes bonariensis, is a South American atherinid freshwater fish considered as a promising species for aquaculture. Although growth hormone has been characterized in a number of fish, there are no published data on the ...
Juan A Rubiolo, Gustavo M Somoza
exaly +3 more sources
Growth hormone is an essential polypeptide required for normal growth and development of vertebrates. The pejerrey fish, Odontesthes bonariensis, is a South American atherinid freshwater fish considered as a promising species for aquaculture. Although growth hormone has been characterized in a number of fish, there are no published data on the ...
Juan A Rubiolo, Gustavo M Somoza
exaly +3 more sources
Effects of a glyphosate-based herbicide in pejerrey Odontesthes humensis embryonic development
Chemosphere, 2017Glyphosate-based herbicides (GBH) are the major pesticides used worldwide. Among them, the Roundup formulations are the most popular. Some aspects of GBH toxicity are well known, such as induction of oxidative stress. However, embryotoxicity is scarcely known.
Yuri Dornelles, Zebral +6 more
openaire +2 more sources
Dmrt1 expression analysis during spermatogenesis in pejerrey, Odontesthes bonariensis
Fish Physiology and Biochemistry, 2006Dmrt1, a putative transcription factor with a DM-binding motif (called the DM domain), is generally considered to be exclusively expressed in testicular tissue, except in some teleost species where it has also been demonstrated to be expressed at the ovary.
J. I. Fernandino +2 more
openaire +1 more source
Theriogenology, 2020
Pejerrey fish (Odontesthes bonariensis) is a seasonal multiple spawner with great economic importance and an adequate species for Aquaculture. For these reasons, it is necessary to apply biotechnologies to optimize its reproduction in captivity. In this context, the aim of this work was to develop a cooling protocol for pejerrey embryos at sub-zero ...
Macoretta, Christian Leandro +1 more
openaire +3 more sources
Pejerrey fish (Odontesthes bonariensis) is a seasonal multiple spawner with great economic importance and an adequate species for Aquaculture. For these reasons, it is necessary to apply biotechnologies to optimize its reproduction in captivity. In this context, the aim of this work was to develop a cooling protocol for pejerrey embryos at sub-zero ...
Macoretta, Christian Leandro +1 more
openaire +3 more sources