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Registros recuperados: 7
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Alkaloids and acetogenins in Annonaceae development: biological considerations Rev. Bras. Frutic.
González-Esquinca,Alma Rosa; De-La-Cruz-Chacón,Iván; Castro-Moreno,Marisol; Orozco-Castillo,José Agustín; Riley- Saldaña,Christian Anabi.
Chemical studies of the plant family Annonaceae have intensified in the last several decades due to the discovery of annonaceous molecules with medicinal potential (e.g., benzylisoquinoline alkaloids and acetogenins). Approximately 500 alkaloids have been identified in 138 Annonaceae species in 43 genera. In addition, until 2004, 593 annonaceous acetogenins (ACGs) had been identified, from 51 species in 13 genera.This suggests that plants from this family allocate important resources to the biosynthesis of these compounds. Despite the diversity of these molecules, their biological roles, including their physiological and/or ecological functions, are not well understood. In this study, it was provided new data describing the variety and distribution of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Early development; Secondary metabolism; Ecological functions; Phenology.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000500001
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BRS 334RR: cultivar de soja transgênica: alta produtividade com precocidade. Infoteca-e
CARNEIRO, G. E. de S.; PIPOLO, A. E.; MELO, C. L. P. de..
Alta produtividade com precocidade! BRS 334RR: grupo de maturidade, regioes edafoclimáticas de adaptação, época de semeadura, reação a doenças, características médias.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Soja; Variedade; Planta transgênica; Precocidade vegetal; Soybeans; Early development; Transgenic plants.
Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/921734
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Dynamic epimarks in sex-related genes predict gonad phenotype in the European sea bass, a fish with mixed genetic and environmental sex determination ArchiMer
Anastasiadi, Dafni; Vandeputte, Marc; Sanchez-baizan, Nuria; Allal, Francois; Piferrer, Francesc.
The integration of genomic and environmental influences into methylation patterns to bring about a phenotype is of central interest in developmental epigenetics, but many details are still unclear. The sex ratios of the species used here, the European sea bass, are determined by genetic and temperature influences. We created four families from parents known to produce offspring with different sex ratios, exposed larvae to masculinizing temperatures and examined, in juvenile gonads, the DNA methylation of seven genes related to sexual development by a targeted sequencing approach. The genes most affected by both genetics and environment were cyp19a1a and dmrt1, with contrasting sex-specific methylation and temperature responses. The relationship between...
Tipo: Text Palavras-chave: Early development; Environmental temperature; DNA methylation; Sex determination; Aromatase; Cyp19a1a; Dmrt1; Epigenetic marks; DNA methylation threshold; Epigenetic inheritance.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00470/58123/61657.pdf
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Embryonic development and larval stages of Steindachneridion parahybae (Siluriformes: Pimelodidae): implications for the conservation and rearing of this endangered Neotropical species Neotropical Ichthyology
Honji,Renato M.; Tolussi,Carlos E.; Mello,Paulo H.; Caneppele,Danilo; Moreira,Renata G..
Steindachneridion parahybae is a freshwater catfish endemic to the Paraíba do Sul River and is classified as an endangered Neotropical species. An increasing number of conservation biologists are incorporating morphological and physiological research data to help conservation managers in rescue these endangered species. This study investigated the embryonic and larval development of S. parahybae in captivity, with emphasis in major events during the ontogeny of S. parahybae. Broodstocks were artificially induced to reproduce, and the extrusion occurred 200-255 degree-hours after hormonal induction at 24°C. Larval ontogeny was evaluated every 10 minutes under microscopic/stereomicroscopic using fresh eggs samples. The main embryogenic development stages...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial reproduction; Early development; Eggs; Larvae; Surubim do Paraíba.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200007
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Influence of spawning procedure on gametes fertilization success in Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae): Implications for the conservation of this species Neotropical Ichthyology
Honji,Renato M.; Mello,Paulo H.; Araújo,Bruno C.; Rodrigues-Filho,Jandyr A.; Hilsdorf,Alexandre W. S.; Moreira,Renata G..
Artificial reproduction and gamete fertilization were evaluated in Salminus hilarii wild and domesticated broodstocks. Wild and domesticated broodstocks were artificially induced to reproduction using a carp pituitary treatment. Four groups were considered: Group 1 (G1), fish caught in the wild maintained for three years in the same conditions as the domesticated broodstocks and spawned naturally; Group 2 (G2), broodstock born and raised in captivity and spawned naturally; Group 3 (G3), wild broodstocks, which were manually stripped for gamete collection and dry fertilization; and Group 4 (G4), domesticated males and females, also manually stripped. Oocytes, eggs, and larvae were sampled at different time intervals throughout embryonic development. Yolk...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Early development; Growth; Reproduction; Tabarana.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200014
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Morphological development of larvae and juveniles of Prochilodus argenteus Ciência Rural
Guimarães,Irũ Menezes; Dias Filho,Vinícius Augusto; Silva,Ana Helena Gomes da; Santos,Rafael Silva; Severi,William.
ABSTRACT: Prochilodus argenteus is an endemic fish species from the São Francisco River basin that is of high economic and environmental importance. The present study aimed to contribute with information to the taxonomic identification of larvae and juveniles of this species. Larvae , obtained from induced spawning of wild animals, were reared in ponds. Individuals were collected daily and classified into larval stages or juvenile phase. Morphological descriptions and morphometric measurements were performed, together with a piece wise linear regression analysis of the body proportions throughout the development process. Individuals in the preflexion stage had a standard length (SL) of 4.48 to 6.64mm, long to moderate body (BH/SL), small to moderate head...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Curimatã; Early development; Morphometry; São Francisco River.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400402
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Studies on the reproductive and developmental biology of Cichlasoma dimerus (Percifomes, Cichlidae) Biocell
Pandolfi,Matías; Cánepa,Maximiliano M.; Meijide,Fernando J.; Alonso,Felipe; Rey Vázquez,Graciela; Maggese,M. Cristina; Vissio,Paula G..
Many characteristics of the South American teleost fish Cichlasoma dimerus (body size, easy breeding, undemanding maintenance) make it amenable to laboratory studies. In the last years, many of the fundamental aspects of its reproductive and developmental biology have been addressed in our laboratory. Rather recently, the immunohistochemical localization of pituitary hormones involved in reproduction and in background color adaptation has been described in both adult and developing individuals, and the role of FSH in ovarian differentiation has been established. These findings have been correlated with mapping of some of their brain-derived controlling hormones. The latter include brain-derived gonadotropins which were shown to be active in vitro in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproduction; Early development; Neuroendocrinology; Brain; Pituitary; Teleosts.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452009000100001
Registros recuperados: 7
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