Consulta: creatorFacets:"Christiansen, H.E."
Registros recuperados: 3
Data/hora: 09/06/2024 01:52:07

Variaciones en el número de miocélulas de la musculatura blanca de la merluza (Merlucciidae, Merluccius hubbsi), en la plataforma argentina
Provedor de dados: 20
Autores: Christiansen, H.E.
This paper describes a method to discriminate different stocks of the Argentine hake (Merluccius hubbsi)based on the counting of white skeletal fibres of the trunk. A total of 713 females were examined from samples coming from a wide area of the Argentine shelf (between 34°30' and 54°00'S)which corresponds to the following systems: Uruguayan, Buenos Aires, northern, central and southern-patagonian. All results may be considered as preliminary due to the incipient nature of the information available on fibre regulation in fish.
Tipo: Journal Contribution
Palavras-chave: Stock identification; Histology; Muscles; Hake fisheries; Muscles; Http://aims.fao.org/aos/agrovoc/c_5003.
Ano: 1982
URL: http://hdl.handle.net/1834/2055

El comportamiento reproductivo del besugo (Pagrus pagrus)en el ecosistema costero bonaerense.
Provedor de dados: 20
Autores: Cotrina, C.P.; Christiansen, H.E.
The species, like other members of the Family Sparidae, has a hermaphroditic phase in its sexual development, affecting the population partially during the first period of life. The sexual differentiation mechanisms have been inferred by the way of macroscopic characterization and proportionality of the different stages observed during the first five year classes. The highest proportion of specimens with bisexual gonads is observed during the third year of life: from the macroscopical point of view, both sexes are equally developed or with predominance of the masculine crest; microscopically, both are functional and synchronous. The masculine portion demostrate a normal expulsion of germ cells and in the ovaric part post-ovulatory and atretic follicles...
Tipo: Journal Contribution
Palavras-chave: Reproductive cycle; Ovaries; Ovaries; Http://aims.fao.org/aos/agrovoc/c_5456.
Ano: 1994
URL: http://hdl.handle.net/1834/1929

Observaciones sobre el ciclo reproductivo del mero, Acanthistius brasilianus (Serranidae, Pisces)
Provedor de dados: 20
Autores: Dell'Arciprete, O.P.; Christiansen, H.E.; Diaz de Astarloa, J.M.
The present paper deals with the study of the reproductive cycle of the sea-bass (Acanthistius brasilianus). Its main objective is getting some advance in the inderstanding of the gonad cycle of the sea-bass and the comprehension of its mode of reproduction. The study is emphasized on tahe females because it is thought that they permit a better analysis in this first stage of the reseach work. Some basic aspects, such as the anatomical and the histological description of the gonadas, the study of ovocyte maturation phases and the development of ovary maturity scales were into account. The gonad cycle was analized throughout the year by means of different approaches; histological analysis of ovary preparation and by following the statistical structure of...
Tipo: Journal Contribution
Palavras-chave: Sexual maturity; Reproductive cycle; Reproduction; Ovaries; Testes; Ovaries; Sexual maturity; Reproduction; Testes; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7682.
Ano: 1987
URL: http://hdl.handle.net/1834/2004