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Registros recuperados: 15
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Compte rendu des premières expérimentations de fécondation artificielle chez l'ombrine, Sciaenops ocellatus : études préliminaires de la maturation finale des ovocytes et de la qualité du sperme ArchiMer
Gardes, Lionel; Buchet, Vincent; Villanove, Philippe; Fauvel, Christian.
Artificial insemination mastery in red drum, Sciaenops ocellatus, requires a first experimental step wOOng at getting basic biological data. Regarding males, a relation between optical density of the solution (OD) measured by spectrophotometry and sperm concentration (SC) has been established : OD O,161*SC + 0,119. Mean sperm concentration measured is 4,36.10 10 spz.mL-1. This study shows an influence of the solution of dilution on spermatozoa motility and its evolution during short term preservation. As far as females are concemed, the follow-up of final maturation through the observation of samples taken during reguIar strippings, seems to he a good technique to limit overripening and spontaneous liheration of ovules. Some artificial insemination trials...
Tipo: Text Palavras-chave: Fécondation artificielle; Concentration spermatique; Motilité du sperme; Ovogenèse; Ovulation; Sur maturation; Ombrine; Sciaenops ocellatus.; Artificial insemination; Sperm concentration; Sperm motility; Oogenesis; Ovulation; Overripening; Red drum.; Sciaenops ocella/us.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00366/47755/47801.pdf
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Cycle sexuel des femelles de sandre Stizostedion lucioperca (L.,1758) Pisces, Percidae) dans la retenue du barrage de Sidi Salem (Tunisie) OceanDocs
Missaoui, H.; Toujani, R.; Romdhane, M.S..
Durant la période mars 1996 - mars 1997, nous avons suivi sur un échantillon de 720 individus, l’état de la maturité sexuelle des femelles de sandre Stizostedion lucioperca peuplant la retenue du barrage de Sidi Salem (nord de la Tunisie). Parallèlement, une étude basée sur des coupes histologiques a été réalisée sur un échantillon de 65 femelles (taille moyenne = 35 cm, poids moyen = 522 g et âge moyen = 1,8 ans). Ces travaux ont permis de montrer que: - l’âge de la première maturité sexuelle des femelles est d'un an pour une taille de 24 cm et un poids de 90 g. - la fécondité relative est de 200 œufs / g de poids corporel et la fécondité absolue F est fortement corrélée avec le poids W (F=632 *W 0,77), la taille L (F=6760*L  148372) et l'âge t...
Tipo: Journal Contribution Palavras-chave: Spawning; Fecundity; Freshwater fish; Oogenesis; Sexual maturity.
Ano: 2010 URL: http://hdl.handle.net/1834/4288
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Efficiency of in vivo embryo production using sorted semen in cattle. Repositório Alice
FIGUEIREDO, A. C. S.; FERNANDES, C. A. C.; NERI, H. L. H.; PEREIRA, G. H. S.; PEREIRA, J. R.; VIANA, J. H. M.; VIEIRA, M. R..
bitstream/item/185493/1/p438-SBTE.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Folliculogenesis; Oogenesis; Superovulation.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098859
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Etude preliminaire des equilibres de distribution de l'eau et des ions au cours de l'ovogenese de Solea solea ArchiMer
Gallis, J; Lemenn, F; Lebrun, A; Nunez, R.
During oogenesis of Solea solea L., gonadal changes in water, Na super(+) and K super(+) ions seem to be related to yolk protein incorporation by the oocyte. The decrease in oocyte water accumulation, associated with an increase in pericellular water accumluation and a decrease in K super(+) concentration occurs when vitellogenin enters the oocyte. Na super(+) concentration decreases in the oocyte at the end of the exogenous vitellogenesis when the first stages of the oocyte maturation take place. Water accumulation in the pericellular space during vitellogenesis allows the rapid transfer of water from this compartment into the oocyte during the terminal phase of maturation. However the total amount of gonadal water remains stable.
Tipo: Text Palavras-chave: Solea solea; Soleidae; Pisces; Hydration; Water content; Ion accumulation; Sexual maturity; Ovaries; Oogenesis; Solea; Maturation ovocytaire; Ovogenèse; Eau; Ions.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1231.pdf
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Gametogenesis and nucleotypic effects in the tetraploid red vizcacha rat, Tympanoctomys barrerae (Rodentia, Octodontidae) Biol. Res.
GALLARDO,MILTON H; GARRIDO,ORLANDO; BAHAMONDE,RAÚL; GONZÁLEZ,MARCELO.
Nucleotypic effects link DNA content with nuclear size and cell dimensions of reproductive cells in polyploid organisms. We studied the gametogenesis of the allotetraploid rodent Tympanoctomys barrerae, aiming to determine these effects in reproductive cells. The species' cofamily members, Octodon degus and Spalacopus cyanus were used as control. Spermatogenesis and oogenesis in T. barrerae follows the pattern of differentiation and sequence of events of the control species, but varied nucleotypic effects were observed. Exceedingly large, spatulated spermatozoa with a submedially attached flagellum are characteristic of male T. barrerae. The diameter of the nuclei of primordial and growing follicles as well as those of the Graaff follicles, of the...
Tipo: Journal article Palavras-chave: Nucleotypic effects; Oogenesis; Spermatogenesis; Octodontidae; Tympanoctomys barrerae; Tetraploidy.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000500006
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Histological characterization of oocyte developmental stages of suruvi Steindachneridion scriptum kept in captivity Animal Sciences
Abreu, Mariana Roza; Garcia, Patrícia; Zaniboni-Filho, Evoy.
Stages of oocyte development were described for suruvi females (Steindachneridion scriptum) kept in captivity. Oocytes of 21 mature or maturing females and ovaries of 12 immature females were fixed in Karnovsky solution for 4 and 12 hours, respectively. After, they were processed for routine histology, embedded in paraffin and stained with hematoxylin-eosin. Slides were examined under a light microscope and the oocytes were measured using the LAS EZ software, using the average between the largest and the smallest diameter of each oocyte for representation. There were six types of oocytes: Chromatin nucleolus: found in immature females, with average diameter of 9.5 ± 4.46 μm; Perinucleolar: present in all developmental stages with average diameter of 67.6 ±...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.05.04.00-2 histology; Oogenesis; Fish reproduction; Vitellogenesis..
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/27570
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Isolement et caracterisation d'une proteine membranaire ovocytaire capable de fixer specifiquement la vitellogenine ArchiMer
Jugan, P; Vanherp, F.
After solubilization of ovocyte-membranes from the crayfish Orconectes limosus , a component with a molecular weight of 30 kDa and capable to fix vitellogenin specifically, could be characterized by SDS-PAGE and by electroblotting. Because this isolated component is sensible to the digestion of proteolytic enzymes such as pronase, it is assumed that it is a protein. A polyclonal antiserum is produced against this component and its tissue-specificity is verified by ELISA.
Tipo: Text Palavras-chave: Orconectes limosus; Malacostraca; Oogenesis; Biochemical analysis; Cell membranes.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1382.pdf
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La vitellogenese chez Patella coeruelae LMK (Mollusca, Gasteropoda). Approche ultrastructurale ArchiMer
Benmeradi, N.
During the reproductive period, the microscopical observation of Patella coerulea ovary shows some ovogonies forming neets, supported by a conjonctive network, previtellogenic oocytes which leave gradually the conjonctive tissue and vitellogenic oocytes isolated in the acinus lumen. In early stages of previtellogenesis, an important nucleolar activity, caracterised by cloud-shaped or nematosomes and ribonucleoproteinic extrusions in cytoplasm compartment can be observed. At the end of this stage, the oocyte becomes richer in organites, mitochondria, granular endoplasmic reticulum and Golgi. We further notice the outcome of the first vitellin platelets. Production of vitellus is higher as three kinds of vitellus are observed in the following order: dark...
Tipo: Text Palavras-chave: Ultrastructure; Oogenesis; Sexual reproduction; Vitellogenesis.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/acte-1720.pdf
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Les cellules folliculaires secondaires de la crevette Macrobrachium rosenbergii (Decapoda, Palaemonidae): Mise en evidence d'un reseau tubulaire implique dans les echanges entre l'hemolymphe et l'ovocyte ArchiMer
Meuzy, J; Jugan, P; Zerbib, C.
The epithelial cells of the ovary secondary follicles have been studied in the prawn Macrobrachium rosenbergii using electron microscope and horseradish peroxidase. A network of circomvolutioned and anastomosed tubules, measuring about 0.15 mu m in diameter, communicates with the extracellular space. This tubular network is a temporary structure which extensively increases the permeability of the follicular epithelium.
Tipo: Text Palavras-chave: Macrobrachium rosenbergii; Malacostraca; Ultrastructure; Oogenesis; Morphogenesis; Epithelia; Ovaries; Vitellogénine; Réseau tubulaire; Epithelium folliculaire; Vitellogenèse; Macrobrachium rosenbergii.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1189.pdf
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Oogenesis in the swamp eel Synbranchus marmoratus (Bloch, 1795) (Teleostei; synbranchidae). Ovarian anatomy, stages of oocyte development and micropyle structure Biocell
Ravaglia,Mario Aldo; Maggese,María Cristina.
Synbranchus marmoratus (Synbranchidae), commonly known as the swamp eel, is a protogynous diandric teleost fish widely distributed throughout South America. The purpose of this work was to study the ovarian anatomy and to describe oocyte developmental stages in the swamp eel, Synbranchus marmoratus. S. marmoratus has a unique sacular ovary. It is covered by a conspicuous muscular wall, probably involved in an egg-releasing system acting as a peristaltic-like mechanism. The internal ovarian anatomy shows a U-shaped ovarian lamella delimiting a dorsal ovarian lumen. The microscopic study shows evidence of the existence of a germinal epithelium in the inner surface of the lamella, which contains germinal cells, pre-follicular cells and epithelial cells. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Synbranchidae; Ovarian anatomy; Oogenesis; Micropyle.
Ano: 2002 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452002000300003
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Ovarian histology and fecundity in the evaluation of the reproduction of the invasive species Serrasalmus marginatus (Characidae) on a neotropical floodplain Biological Sciences
Melo, Gabriele Sauthier Romano de; Santana, Herick Soares de; Tos, Claudenice Dei.
 The construction of the Itaipu Hydroelectric Power Plant in 1982 led to the formation of a reservoir, which, in turn, leveled the waters of the Paraná River by flooding the geographic barrier Salto de Sete Quedas. This allowed the piranha Serrasalmus marginatus to invade and colonize the upper Paraná River. This study aimed to: i) confirm, through light microscopy, the reproductive phases of S. marginatus females; ii) estimate fecundity and iii) evaluate the reproduction areas of the population. A total of 764 females were collected from nine sampling sites on the upper Paraná River floodplain. Microscopic analysis of the ovaries showed the following phases: early developing subphase, developing phase, spawning capable phase, actively spawning subphase,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.05.02.00-1 Indeterminate fecundity; Type of spawning; Oogenesis; Oocytes; Piranha. Ecologia de Ecossistemas.
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33021
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Ovary development, egg production and oviposition for mated and virgin females of the predator Podisus nigrispinus (Heteroptera: Pentatomidae) - doi: 10.4025/actasciagron.v33i4.6694 Agronomy
Soares, Marcus Alvaranga; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Batista, Joana Darc; Universidade Federal de Viçosa; Zanuncio, José Cola; Universidade Federal de Viçosa; Lino Neto, José; Universidade Federal de Viçosa; Serrão, José Eduardo; Universidade Federal de Viçosa.
The Asopinae insects are generalist predators, and Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) is the most studied species of this group in Brazil. The objective was to study ovarian development, egg production and oviposition of mated and virgin P. nigrispinus females. Five 24-hours-old females were dissected and the ovaries were analyzed. Fifteen females of this predator were mated (T1), and another fifteen were individualized without mating (T2). The ovaries of five females per treatment were dissected and mature and immature eggs were counted. Five virgin females of P. nigrispinus at twenty days old were also analyzed. Twenty-four-hours-old P. nigrispinus females had low ovary development without the evidence of oocyte production. The...
Tipo: Pesquisa de laboratório Palavras-chave: 5.01.02.02-8 biological control; Insect physiology; Oogenesis; Progeny; Reproduction Entomologia Agrícola biological control; Insect physiology; Oogenesis; Progeny; Reproduction.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6694
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Reproductive biology of Alvinocarls muricola (Decapoda : Caridea : Alvinocarididae) from cold seeps in the Congo Basin ArchiMer
Ramirez Llodra, Eva; Segonzac, Michel.
The caridean shrimp Alvinocaris niuricola has been observed forming high density populations over mussel beds on the giant pockmark cold seep site Regab in the Gulf of Guinea at 3150 m depth. Samples were collected using the ROV Victor 6000, a beam trawl and a TV grab from two sites. The specimens Were sexed and measured for population structure analysis. In one sample the sex ratio was 1:1, but the other sample had a sex ratio significantly biased towards females. The maximum size of females is larger than males. A sub-sample was used for gametogenesis and fecundity analysis. The oogenesis and spermatogenesis of A. muricola is characteristic of caridean shrimps. The oogonia proliferate from the germinal epithelium and develop into previtellogenic oocytes...
Tipo: Text Palavras-chave: Reproduction biology; Oogenesis; Sex ratio; Population structure; Caridean shrimp.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2317.pdf
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The Reproductive Biology of the Caspian Green Lizard, Lacerta strigata (Sauria: Lacertidae) in Iran International Journal of Morphology
Hojati,Vida; Keshavarz,Seyed Mohammad; Behniafar,Reza; Shiravi,Abdolhossein.
The Caspian Green Lizard, Lacerta strigata Eichwald, 1831, is a member of the Lacertidae family distributed in the Caspian coast of northern Iran. The specimens were found in coastal dunes, hilly areas and pastureland containing some shrubby cover. In this research, the reproductive biology of this species was studied from April 20 to September 5, 2013. Forty eight adult specimens including 24 females and 24 males were collected by hand at midday from three sampling stations (Goharbaran, Ab-Bandansar and Ab-Bandankesh) of Sari County, located in Mazandaran Province of Iran. Ovaries and testes were removed and processed for histological and morphometric studies. In females, there were 6­17 follicles in each ovary. Totally, 6­10 oviductal eggs were observed...
Tipo: Journal article Palavras-chave: Lacertidae; Caspian green lizard; Oogenesis; Spermatogenesis; Caspian coast.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000200005
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The role of Oocyte-Secreted Factors GDF9 and BMP15 in follicular development and oogenesis. Repositório Alice
PAULINI, F.; MELO, E. de O..
2011
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cumulus oophorus; Oogenesis.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/911595
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