SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

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

Febvre, Michèle.

The oocyte atresia are studied in captive Serranus cabrilla Linne, and compared to the atresia which occur during corresponding cycle periods. Whereas physiological atresia are difficult to reveal, atresia in captivity depend on the capture period, laboratory conditions and on the duration of the experiment. The oocyte modifications are described and discussed.

Tipo: Text

Palavras-chave: Serranus cabrilla; Ovaries; Reproduction; Captivity; Diseases; Physiology.

Ano: 1975

URL: http://archimer.ifremer.fr/doc/1975/publication-2024.pdf

Morphological and cytological aspects of sex inversion in a protogynous hermaphrodite, Epinephelus microdon (Teleostei, Serranidae).

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

Etude preliminaire des equilibres de distribution de l'eau et des ions au cours de l'ovogenese de Solea solea

Brusle, S; Debas, L; Cauty, C.

The sexuality of the grouper Epinephelus microdon , caught by diving in the area of Tahiti Island, from January 1986 to March 1987, is investigated. Small specimens are females, males occur among the largest fishes, revealing the protogyny of Epinephelus microdon as in other Epinephelinae. Nineteen fishes among 233 samples studied are in sex inversion.

Tipo: Text

Palavras-chave: Epinephelus microdon; Ovaries; Sperm; Spermatogenesis; Females; Males; Sexual cells; Spawning; Cytology; Animal morphology; Sex reversal; Sex determination.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1440.pdf

Role of steroid hormones and external factors in the control of pituitary gonadotropic activity of female European eel (Anguilla anguilla ).

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

Cycle ovarien du merlu, Merluccius merluccius , poisson a ponte fractionnee.

Leloup, H; Fontaine, Y; Dufour, S; Querat, B.

Gonadotropic activity is relatively low in the female freshwater (FW) eel (A. anguilla ): pituitary GTH was about 15 ng equivalent cGTH/mg fresh tissue. Plasma GTH was always less than 1 ng equivalent cGTH/ml and often undetectable (< 0.2 ng equivalent cGTH/ml). Ovarian steroidogenesis in FW fish is similarly low; plasma concentration of both free testosterone (T) and free estradiol (E sub(2)) were less than 0.3 ng/ml as measured by RIA. Treatment with E sub(2) in FW fish caused a great increase in pituitary GTH, up to 1000 times control values, without changing plasma GTH. Stimulation of gonadotropic activity and ovarian development occur during the eel's migration to the Sargasso Sea. Adaptation to seawater (SW) caused a great increase of plasma E...

Tipo: Text

Palavras-chave: Anguilla anguilla; Anguillidae; Pisces; Migrations; Salinity; Environmental factors; Pituitary gland; Sexual reproduction; Ovaries; Sexual maturity; Steroids; Sex hormones; Facteurs externes; Steroids sexuels; Gonadotropine; Anguille.

Ano: 1983

URL: http://archimer.ifremer.fr/doc/1983/acte-1217.pdf

Recent advances in Australian prawns diseases and pathology

Sarano, F.

The present work analyses and describes Merluccius merluccius ovarian cycle in the Bay of Biscay as an example of partial spawner. Three methods were employed: a macroscopic examination of about 10,000 ovaries -- a cytologic and histologic study -- an investigation of the size structure of the oocytes population of 63 ovaries. The author developed an original mathematical method for serial spawning demonstration. He demonstrates that hake is a partial spawner: a female usually rapidly spawns 4 or 5 times without ovaries rest. On this basis, he gives a new reference scale of the maturity stages of the ovarian cycle: after developing (II), ripe (III), running (IV), the partly spent ovary is named (II+); the repetitive sequence III-IV-II + characterize serial...

Tipo: Text

Palavras-chave: Pisces; Animal reproductive organs; Spawning; Ovaries; Sexual reproduction.

Ano: 1984

URL: http://archimer.ifremer.fr/doc/1984/publication-1790.pdf

MORPHOMETRIC ANALYSIS OF THE DEVELOPMENT OF THE OVARIAN FOLLICLES IN PINEALECTOMIZED RATS

Owens, L; Hall, M.

Disease is always limiting in animal production and new syndromes occur in fledgling industries. This paper describes the latest findings in this area.

Tipo: Text

Palavras-chave: Vibrio damsela; Macrobrachium rosenbergii; Malacostraca; Bacteria; Septicaemia; Aetiology; Viruses; Juveniles; Ovaries; Larvae; Pathology; Viral diseases.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1461.pdf

Pereira dos Santos,Katharine Raquel; Coelho Teixeira,Álvaro Aguiar; da Silva Neto,Eulâmpio José; Teixeira,Valéria Wanderley; da Cunha,Franklin Magliano.

The present study had the objective of analyzing morphometrically the occupied area by the ovarian follicles in ovaries of pinealectomized female rats. To do so, 24 albino female rats (Rattus norvegicus albinus) were used, which were equally divided in the following groups: Group I sham-pinealectomized rats and kept in the light/dark cycle (12/12 hours), for three months; Group II pinealectomized rats and kept in the light/dark cycle (12/12 hours), for three months; Group III pinealectomized rats and kept in the absence of light for three months; Group IV sham-pinealectomized rats and kept in the absence of rats for three months. The results showed that the groups I and IV presented, respectively, average of 19,00 and 25,00, while groups II and III...

Tipo: Journal article

Palavras-chave: Pinealectomy; Ovaries; Morphometric; Estrus.

Ano: 2004

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000200001

Correlation Between Function-Morphology of Effect of the Stress and Flunitrazepam Administered During Gestation in Adult Mouse Ovary

Aguirre-Samudio,Ana Julia; de la Fuente-Juáre,Graciela; Márquez-Orozco,Amalia; Márquez-Orozco,María Cristina.

Previously we report long lasting effects on ovary of mice prenatally exposed to flunitrazepam (FNZ), a benzodiazepine with tranquilized action. In this work we find that the FNZ don't prevent the effects on ovary prenatally exposure to stress in mice. We studied adult females born from mothers that had been stressed by immobilization on day 6 ofgestation (GD-6) or group S, and from mothers stressed also by immobilization at GD-6, but which received a single oral dose of FNZ immediately after the stress group FNZS. The control groups were the SS that received the GD-6 saline solution and the group NT non-treated. Their ovaries were extracted for histology studies and to observe the activity of 3b hydroxysteroid dehydrogenase/isomerase (3 b-HSD). The...

Tipo: Journal article

Palavras-chave: Benzodiazepine; 3 b-HSD; Flunitrazepam; Mouse; Ovaries; Atretics follicles; Prenatal stress.

Ano: 2010

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100045

Cytoarchitectural Variations in the Ovary, Oviduct and Uterus Following Intra-Gastric Gavages of Abrus precatorius Linn in Albino Rats

Okoko,Ini-Ibehe Essien; Yama,Oshiozokhai Eboetse.

In developing countries, herbal medicines have continued to remain significant and readily patronized. Numerous plants have been used historically to reduce fertility and modern scientific research has confirmed antifertility effect in some of the herbs tested. To investigate the effects of Abrus precatorius (AP) on the histology of the ovary, oviduct and uterus of female Sprague-Dawley (S-D) rat. A total of 40, 68 week old 4-day cycling female S-D rats were used. They were divided into the treatment, control and reversibility groups. The treatment and reversibility groups were fed oral AP seed extract (50 mg/kg b.w) for 32 days. A fraction of the rats in reversibility group was treated with distilled water for another 32 days. The control group were used...

Tipo: Journal article

Palavras-chave: Abrus precatorius; Sprague-Dawley rat; Ovaries; Uteri; Oviducts.

Ano: 2011

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000400057

Effects of Natural Environmental Conditions on the Ovarian Histometric Dynamics of Five Striped Squirrels (Funambulus pennanti)

Gonadal Development of Peprilus medius (Peters, 1869) (Perciformes: Stromateidae) from Southeast of the Gulf of California, Mexico

Rehman,Sadia; Mahmood-ul-Hassan,; Qureshi,Anas Sarwar; Akbar,Zeeshan.

The present study was designed to determine the morphological and histological variations in the female palm squirrel's reproductive organs which inhabit croplands of central Punjab. 16 specimens were collected from 3 different locations of Faisalabad district during different months in order to collect their ovaries samples in order to determine the breeding phenology of this species. Body weight and external body measurements were recorded. Two adult females were autopsied each month and their ovaries were extracted. Tissue were prepared by the tissue paraffin technique and stained by H&E. Seasonal variations in the follicular size and shape were observed. Statistical analysis revealed that values of all parameters of ovaries were significantly...

Tipo: Journal article

Palavras-chave: Squirrels; Folliculogenesis; Ovaries; Season.

Ano: 2016

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100037

Maldonado-Amparo,Maria de los Angeles; Sánchez-Cárdenas,Rebeca; Salcido-Guevara,Luis Antonio; Ramírez-Pérez,Jorge Saúl.

The gonadal development assessment is a fundamental work in researching the reproduction of Peprilus medius, on the way to understand its population dynamics and to achieve a sustainable management of its fisheries. The diagnosis based on morphochromatic features is the quicker, more practical and cheaper method, and properly validated, it may be an accurate procedure. This is particularly useful in researches when it is required to provide prompt and accurate information to support decision-making for fisheries management, and during long-term fisheries monitoring to detect changes in reproductive patterns due to environmental anomalies. These are issues of concern in P. medius and other fishery resources. In this context, a scale that describes the...

Tipo: Journal article

Palavras-chave: Ovaries; Testes; Gametogenesis; Reproductive anatomy.

Ano: 2017

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000100011

Compositions chimiques et énergétiques des boutargues du mulet <Mugil cephalus> et de la courbine argyrosomus regius en Mauritanie

Biologia reproductiva de la saraquita Ramnogaster arcuata (Jenyns, 1842) del estuario del Rio de la Plata.

El Cafsi, M.; Beddih, M.L.O.A.; Marzouk, B; Zarrouk, K..

La boutargue est constituée par les ovaires salés et séchés des mulets à grosse tête (Mugil cephalus) et de la courbine (Argyrosomus regius) représente une ressource importante pour la région de Nouakchott et pour la Mauritanie. Pour déterminer la valeur énergétique dans les boutargues, nous avons effectué des dosages des protéines, des glucides, des lipides et des études analytiques des acides gras et des lipides. Les analyses ont révélé que la boutargue contient, par rapport aux autres éléments d’énergie, très peu de glucide : 3,29% dans la boutargue du mulet et 1,95% dans celle de la courbine. Alors que les teneurs en protéines et lipides sont importantes et sont respectivement de 44,44% et 31,68% dans la boutargue du mulet et de 55,11% et 15,86% dans...

Tipo: Journal Contribution

Ano: 2005

URL: http://hdl.handle.net/1834/4082

Estrategia reproductiva de la saraca, Brazilian menhaden, Brevoortia aurea (Pisces: Clupeidae), en el estuario del Río de la Plata

Rodrigues, K.A..

The reproductive biology of Ramnogaster arcuata inhabiting waters of the Rio de la Plata estuary (Argentina - Uruguay) was studied by using macroscopic and histological analysis of ovaries. R. Arcuata specimens were collected from two research cruises of the National Institute of Fisheries Research and Development (INIDEP) carried out in June 1998 and June 1999. During these surveys, bottom salinity and temperature data were also registered. In addition, information about annual catches of this species in the Rio de la Plata, obtained from different INIDEP cruises performed during the last ten years, was analyzed. During winter, a prevalence of R. arcuata individuals was observed in the Rio de la Plata estuary. In summer, this species apparently moves...

Tipo: Theses and Dissertations

Palavras-chave: Sexual reproduction; Ovaries; Fecundity; Spawning seasons; Histology; Fish eggs; Oocytes; Environmental conditions; Ovaries; Sexual reproduction; Fecundity; Oocytes; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_26876; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_29343; Http://aims.fao.org/aos/agrovoc/c_32980.

Ano: 2005

URL: http://hdl.handle.net/1834/1485

Ciclo reproductivo y fecundidad del lenguado Paralichthys patagonicus Jordan, Jordan y Goss 1889

Acha, E.M..

The Brazilian menhaden, Brevoortia aurea, is the only species of genus Brevoortia in South American Atlantic waters, being abundant in the Rio de la Plata estuary. The temporal and spatial reproductive pattern of this menhaden was analyzed in relation to the major hydrographic features of the region, and the reproductive biology was studied by using histological analysis of ovaries. B.aurea is a multiple spawner with indeterminate annual fecundity. Daily spawning activity was mostly in the afternoon (15:00 - 16:00),based on the incidence of females with both hydrated oocytes and postovulatory follicles. Spawning frequency, determined using the percentage of females with postovulatory follicles, was about 12. during November. At this frequency, each...

Tipo: Theses and Dissertations

Ano: 1999

URL: http://hdl.handle.net/1834/1458

Macchi, G.J.; Diaz de Astarloa, J.M..

The reproductive characteristics of the flounder (Paralichthys patagonicus)are analyzed on the basis of the microscopic and macroscopic study of the ovaries. Preliminary estimations of the fecundity of this species are also made. The samples were obtained from the monthly commercial langings in Mar del Plata and from research cruises undertaken by the INIDEP. A total of 641 ovaries were studied; 210 of which were selected for the histological analysis. 24 ovaries with hydrated oocytes and without post-ovulatory follicles were used to determine batch fecundity. A macroscopic maturity scale of five stages was established. The histological analysis allowed to introduce three substage within the maturation stage including a partial spawning stage. According to...

Tipo: Journal Contribution

Palavras-chave: Reproductive cycle; Fecundity; Ovaries; Ovaries; Fecundity; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_15725.

Ano: 1996

URL: http://hdl.handle.net/1834/1960

El comportamiento reproductivo del besugo (Pagrus pagrus)en el ecosistema costero bonaerense.

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

Reproducción del pez palo (Percophis brasiliensis) en aguas costeras de la provincia de Buenos Aires

Descripción macroscópica de los ovarios del abadejo manchado (Genypterus blacodes). Escala de maduración

Militelli, M.I; Macchi, G.J..

The reproductive biology of Percophis brasiliensis sampled during December 1998 in coastal waters off the Buenos Aires Province (Argentine Sea) (36°-42°S)was studied using macroscopic and microscopic gonad analysis. Size at first maturity of brazilian flathead showed highly significant differences (P 0.01)between sexes, being 28.98 Lt cm for males and 38.34 Lt cm for females. Microscopic analysis of ovaries showed that this species is a batch spawner. At the beginning of December the reproductive activity decreased and a high percentage of atresia was observed. Spawning females (with hydrated oocytes)were concentrated in shallow waters near Claromeco and Necochea (38°30'-39°S)between 14 and 16°C, coinciding with a bottom thermal front.

Tipo: Journal Contribution

Palavras-chave: Ovaries; Histology; Coastal waters; Ovaries; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_25205.

Ano: 2001

URL: http://hdl.handle.net/1834/1864