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17,20β-P and cortisol are the main in vitro metabolites of 17-hydroxy-progesterone produced by spermiating testes of Micropogonias furnieri (Desmarest, 1823) (Perciformes: Sciaenidae) Neotropical Ichthyology
Vizziano Cantonnet,Denise; Mateo,Magdalena; Alberro,Andrés; Barrios,Florencia; Fostier,Alexis.
The aim was to investigate the major C21 steroids produced by spermiating white croaker Micropogonias furnieri (Sciaenidae) in order to establish the potential mediator of gamete maturation in males of this species. The testes steroid production at the spawning season was identified incubating the 3H-17-hydroxy-4-pregnene-3,20-dione precursor through thin layer chromatography, high pressure liquid chromatography, enzymatic oxydation, acetylation and immunochemistry analyses. 17,20β-Dihydroxy-4-pregnen-3-one (17,20β-P) and 11β,17,21-Trihydroxy-4-pregnene-3,20-dione (cortisol) were the main metabolites produced. Contrary to what we expected, 17,20β,21-Trihydroxy-4-pregnen-3-one was not detected. Circulating levels of 17,20β-P were undetectable in immature...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Male gonad; Maturing steroids; Reproduction; Steroid synthesis; White croaker.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300613
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A Functional Study of Transforming Growth Factor-Beta from the Gonad of Pacific Oyster Crassostrea gigas ArchiMer
Corporeau, Charlotte; Groisillier, Agnes; Jeudy, Alexandra; Barbeyron, Tristan; Fleury, Elodie; Fabioux, Caroline; Czjzek, Mirjam; Huvet, Arnaud.
The transforming growth factor (TGF)-beta superfamily is a group of important growth factors involved in multiple processes such as differentiation, cell proliferation, apoptosis and cellular growth. In the Pacific oyster Crassostrea gigas, the oyster gonadal (og) TGF-beta gene was recently characterized through genome-wide expression profiling of oyster lines selected to be resistant or susceptible to summer mortality. Og TGF-beta appeared specifically expressed in the gonad to reach a maximum when gonads are fully mature, which singularly contrasts with the pleiotropic roles commonly ascribed to most TGF-beta family members. The function of og TGF-beta protein in oysters is unknown, and defining its role remains challenging. In this study, we develop a...
Tipo: Text Palavras-chave: Transforming growth factor-beta; Bacterial expression; In vivo antibody inhibition; Reproduction; Crassostrea gigas; Marine bivalve.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00042/15371/13438.pdf
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A genetic framework for flowering-time pathways in Citrus spp. Genet. Mol. Biol.
Dornelas,Marcelo Carnier; Camargo,Raquel Luciana Boscariol; Figueiredo,Luciana Harumi Morimoto; Takita,Marco Aurélio.
Floral transition is one the most drastic changes occurring during the life cycle of a plant. The shoot apical meristem switches from the production of leaves with associated secondary shoot meristems to the production of flower meristems. This transition is abrupt and generally irreversible, suggesting it is regulated by a robust gene regulatory network capable of driving sharp transitions. The moment at which this transition occurs is precisely determined by environmental and endogenous signals. A large number of genes acting within these pathways have been cloned in model herbaceous plants such as Arabidopsis thaliana. In this paper, we report the results of our search in the Citrus expressed sequence tag (CitEST) database for expressed sequence tags...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproductive development; Flowering-time genes; Reproduction; Photoperiod; CONSTANS.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500006
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A honeymoon in Brazil: the spawning behavior of an exotic reef fish in the western south Atlantic Neotropical Ichthyology
Luiz,Osmar J; Sazima,Ivan; Waib,Luis F; Ferreira,Carlos Eduardo L.
The reproductive strategies of surgeonfishes of the genus Acanthurus are well known for all Atlantic species except the Monrovia doctorfish, Acanthurus monroviae, an eastern Atlantic surgeonfish whose biology remains largely unknown. We provide here the first account on the spawning behavior of A. monroviae, an exotic fish on rocky reefs of southeastern Brazilian coast.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Acanthurus monroviae; Acanthuridae; Reproduction; Laje de Santos; Rocky reef.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200016
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A importancia da polinizacao manual para aumentar a produtividade do maracujazeiro. Infoteca-e
JUNQUEIRA, N. T. V.; VERAS, M. C. M.; NASCIMENTO, A. C. do; CHAVES, R. da C.; MATOS, A. P.; JUNQUEIRA, K. P..
2001
Tipo: Documentos (INFOTECA-E) Palavras-chave: Maracujá; Passiflora edulis; Polinização; Reprodução vegetal; Frutificação; Fruto; Produção de semente; Passion fruits; Pollination; Reproduction; Fruiting; Fruit; Seed production.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/567146
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A incubação de ovos e larvas em Genidens genidens (Valenciennes) (Siluriformes, Ariidae) da Baía de Guaratuba, Paraná, Brasil Zoologia
Chaves,Paulo de Tarso da C.
At Guaraluba bay, the catfish Genidens genidens shows incubating behavior during the summer months. The larvae are either less or heavier than the eggs, and their stomach analysis confirms the exogenous leeding during incubation. Embryos sizes can increase to 59mm in total lenght and 2,8g in total weight, including the yolksac. It was observed that the largest larvae are guarded by the largest adults, and that the embryo size is similar among individuals from the same adult.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catfish; Reproduction; Fishes; Larvae; Paraná.
Ano: 1994 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400008
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A long-term study of small mammal populations in a Quercus dentata forest surrounded by agricultural lands in Tokachi,Hokkaido : I.Yearly changes in fauna and populations OAK
Onoyama, Keiichi; 小野山, 敬一.
Palavras-chave: Small mammals; Clethrionomys rufocanus bedfordiae; Yearly chenge; Population; Reproduction.
Ano: 1988 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1544
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A new record of giant squid Architeuthis sp. (Cephalopoda: Oegopsida) in Brazilian waters Rev. Bras. Zool.
Martins,Rodrigo Silvestre; Perez,José Angel Alvarez.
A carcass of a giant squid Architeuthis sp. was found afloat off Southern Brazil (28°05'S, 45°35'W) on 29 August 1999. The specimen was a mature female of 116 cm mantle length and had arms incomplete and tentacles missing. The specimen was morphologically similar to those previously described for the Southwest Atlantic, but a few peculiarities were found on the shape of the fins, head and the cross-section and length of ventral arms. Spermatophores were found embedded within the skin of the left ventral arm, at around 60 cm from the mouth, and could be traced to the core of the arm, radiating nearly four centimeters from the point of entry. This was the third record of Architeuthis in Brazilian waters and the eighth in Southwest Atlantic when the specimen...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Occurrence; Morphology; Reproduction; Southwest Atlantic.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400005
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A note on the reproduction of Geochelone carbonaria and G. denticulata (Testudines, Testudinidae) BJB
VANZOLINI,P. E..
On the occasion of having collected three gravid Geochelone carbonaria in the Bolivian Chaco, data are given on oviducal eggs, as well as on five shells of eggs of the same species in the Museum collection. A review of the literature on the reproduction of G. carbonaria and of its sibling G. denticulata is presented, with an elementary statistical treatment of the data on number of clutches per reproductive season, interval between clutches, clutch size, egg shape and volume.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Testudines; Reproduction.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400009
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A pesquisa e seus reflexos no desenvolvimento da pecuária bovina de corte. Infoteca-e
COSTA JÚNIOR, E. M. A..
Evolução dos conhecimentos. Área de pastagem e nutrição. Área de melhoramento genético. Área de sanidade animal. Área de reprodução. Área de economia rural.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Bovino de corte; Pesquisa; Pastagem; Nutrição; Melhoramento genético; Sanidade; Reprodução; Economia rural; Brasil; História; Beef cattle; Research; Pasture; Nutrition; Breeding; Health; Reproduction; Agricultural economic; Brazil; History.
Ano: 1984 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/317575
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A Potential Use of Color Ultrasound as a Tool for Reproductive Management: New Observations Using Color Ultrasound Scanning that were not Possible with Imaging Only in Black and White OAK
MIYAMOTO, Akio; SHIRASUNA, Koumei; HAYASHI, Ken-Go; KAMADA, Daichi; KAWASHIMA, Chiho; KANEKO, Etsushi; ACOSTA, Tomas J.; MATSUI, Motozumi; 宮本, 明夫; 白砂, 孔明; 川島, 千帆; 松井, 基純.
Ultrasonography (US) has been applied to the ovary and the uterus of domestic animals from the late 1980s, and established in 1990s as a practical tool for animal production. US made it possible to detect pregnancy at a very early stage and, most importantly, to observe the real-time dynamics of follicular development and hence the discovery of follicular waves. This has greatly contributed to our understanding of ovarian physiology and helped us to develop several "pin-point" protocols for hormonal treatment. While US may not seem to fit preconceived ideas of a "green" technology, it does not contravene environmental priorities, and it is non-invasive ("ethical") and non-hormonal ("clean"). Using the US technology that is now commercially available at a...
Palavras-chave: Color Doppler ultrasound; Blood flow; Ovary; Reproduction; Cow.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2983
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A rapid and simple procedure to determine stigma receptivity. Repositório Alice
DAFNI, A.; MAUES, M. M..
1999
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Flor; Receptividade do estigma; Biologia reprodutiva; Reprodução vegetal; Gynoecium; Flowers; Biology; Reproduction; Plant reproductive organs.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394969
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A transcriptome analysis of mitten crab testes (Eriocheir sinensis) Genet. Mol. Biol.
Zhang,Wei; Wan,Haolei; Jiang,Hui; Zhao,Yunlong; Zhang,Xiaowei; Hu,Songnian; Wang,Qun.
The identification of expressed genes involved in sexual precocity of the mitten crab (Eriocheir sinensis) is critical for a better understanding of its reproductive development. To this end, we constructed a cDNA library from the rapid developmental stage of testis of E. sinensis and sequenced 3,388 randomly picked clones. After processing, 2,990 high-quality expressed sequence tags (ESTs) were clustered into 2,415 unigenes including 307 contigs and 2,108 singlets, which were then compared to the NCBI non-redundant (nr) protein and nucleotide (nt) database for annotation with Blastx and Blastn, respectively. After further analysis, 922 unigenes were obtained with concrete annotations and 30 unigenes were found to have functions possibly related to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproduction; Testis; EST; Eriocheir sinensis.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100024
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Abiotic environmental conditions for germination and development of gametophytes of Cyathea phalerata Mart. (Cyatheaceae) Acta Botanica
Marcon,Catiuscia; Silveira,Tatieli; Schmitt,Jairo Lizandro; Droste,Annette.
ABSTRACT In order to successfully establish themselves in their natural environment, ferns need habitats with abiotic conditions that are suitable for spore germination and gametophyte development. The objective of this study was to assess the influence of abiotic factors on the initial development of Cyathea phalerata cultivated in vitro. Spore germination and gametophyte development were assessed under varying conditions of surface sterilization, pH, temperature and photoperiod. Exogenous contamination was eliminated by sterilizing spores with 2.5 % NaClO for 15 min and sowing them into a culture medium supplemented with nystatin. Spores germinated at all pHs tested. Gametophytic development was faster in acidic pHs. Cultures at 25 °C exhibited the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abiotic factors; Arborescent ferns; In vitro propagation; Reproduction; Spores.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100058
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Ablação ocular no camarão Macrobrachium rosenbergii (De Man) (Crustacea, Decapoda, Palaemonidae): efeitos sobre a reprodução, pigmentação epidérmica e atividade alimentar Zoologia
Santos,Marcel José Martins dos; Pinheiro,Marcelo Antônio Amaro.
This study analyze the consequences of unilateral and bilateral ablation based on ovigerous percentage, consecutive spawns, and secondary effects of the surgical process in the females of Macrobrachium rosenbergii (De Man, 1879). Two experiments were carried out with four and seven months old females in intermolt stage. Each experiment was comprised of control, unilateral and bilateral ablation. Eyestalk ablation was done with a bistoury with a topic hot cauterization followed by application of antibiotic pomades. The animals were maintained at constant temperature (28 ± 1,05ºC) and photoperiod of 12L: 12D within fibercement boxes with sandy bottom and biological filter. Females were observed once a day during fourteen weeks, registering gonadal condition,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crustacea; Eyestalk ablation; Reproduction; Pigmentation; Feeding activity; Prawn.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000300012
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Abundance, breeding and food of the Little Blue Heron Egretta caerulea (Aves, Ardeidae) in the Patos Lagoon estuary, a recently colonized area in southern Brazil Iheringia, Sér. Zool.
Gianuca,Dimas; Gianuca,Andros T.; Vooren,Carolus M..
We document the expansion of the breeding distribution of the Little Blue Heron Egretta caerulea (Linnaeus, 1758) to 850 km beyond its previous southern limit in South America. In addition we present data on abundance, breeding biology and food of the species in the Patos Lagoon estuary, the area which the species recently colonized. The maximum abundance recorded in the breeding colony and in a nocturnal roosting site was 53 and 49 individuals respectively. Nesting occurred from September to March. Birds nested in a mixed breeding colony together with about 3,000 breeding pairs of seven other species of Pelecaniformes, in a swampy forest near the margin of the estuary. Five nests were between 1.5 and 4.3 m from the ground, on the shrub Daphnopsis racemosa...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Climate change; Herons; Reproduction; Rio Grande do Sul; Range expansion.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100003
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Abundancia, reproducción y distribucion de tallas del gatuzo Mustelus schmitti en la Zona Comun de Pesca Argentino-Uruguaya y en el Rincón. Noviembre, 1994 OceanDocs
Cousseau, M.B.; Carozza, C.R.; Macchi, G.J..
Relative abundance, length distributions and reproductive condition of Mustelus schmitti are analyzed with samples obtained in the cruise H-13/94. Our results are compared with those obtained in other cruises. The samples were collected in the Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina).
Tipo: Journal Contribution Palavras-chave: Abundance; Reproduction; Fishery surveys; Size distribution; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998 URL: http://hdl.handle.net/1834/2475
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Acción de inhibidores de la síntesis de la quitina en la reproducción de Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) Anais da SEB
Lyra,Jairo R. M.; Ferraz,José M. G.; Silva,Ana P. P..
The effect of benzoilfenylureas on the reproduction of Spodoptera littoralis (Boisd.) was studied. Third instar larvae were treated with either lufenuron or flufenoxuron by ingestion and contact (DL60 rate). The surviving larvae were observed until the adult stage. Adult males and females were mated in different combinations between treated and untreated individuals. The following variables were studied: average number of spermatophore, female fecundity and percentage of ecloded larvae (egg viability). A small change in spermatophore number (ca. 1 to 1.5) was noted specially in the combinations where males were obtained from treated larvae. The percentage of fecundity of females and hatched larvae decreased (ca. 45% and 30%) when both sexes were obtained...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Moth; Chitin synthesis inhibitor; Reproduction.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000400009
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ACOMPANHAMENTO reprodutivo de rebanho leiteiro em nível de produtor. Infoteca-e
2001
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Gado leiteiro; Reproducao; Dairy cattle; Reproduction.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/384259
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Acquis biologique sur le pétoncle noir (Chlamys varia) en Rade de Brest 1973-1983. Conséquences sur l'aménagement de la ressource ArchiMer
Dao, Jean-claude; Gerard, Andre; Buestel, Dominique.
Research on the black scallop followed that on the king scallop. Indeed, over the 1973-1975 " spadework » period, it has been demonstrated that the roadsted of Brest was: - an overexploited king scallop deposit; the broodstock not being able to ensure a satisfying renewal of the species. - a black scallop production deposit (hundreds of tonnes). In parallel, the collection trials provided null results for the king scallop but very interesting results for the black scallop (thousands of spats per collector). From 1976 onwards, the spat collecting operations did not focus on king scallop juveniles anymore, but on black scallop.
Tipo: Text Palavras-chave: Reproduction; Captage; Physiologie; Pétoncle; Chlamys varia.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-6538.pdf
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