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| Walder,J.M.M.; Calkins,C.O.. |
| Pupae of Anastrepha suspensa (Loew) were irradiated 2 days before adult eclosión in an air atmosphere with 15, 20, 25, 30, 50 and 70 Gy of gamma radiation (Co-60). The radiation effects on sterility and other parameters of quality and behavior of males and females of caribfly were established. Males became fully sterile with a dose of 50 Gy and females laid no eggs when exposed to 25 Gy. Radiation had no significant effect on adult eclosion, sex ratio, flight ability and irritability, but female mortality was affected significantly by radiation, showing higher survival rates in low dosage treatments. The mating behavior of the males was reduced significantly by increasing the radiation doses. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anastrepha suspensa; Gamma radiation; Sterility; Behavior. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161993000200001 |
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| Jung, T.; Stukely, M.J.C.; Hardy, G.E.St.J.; White, D.; Paap, T.; Dunstan, W.A.; Burgess, T.I.. |
| During surveys of dying vegetation in natural ecosystems and associated waterways in Australia many new taxa have been identified from Phytophthora ITS Clade 6. For representative isolates, the region spanning the internal transcribed spacer region of the ribosomal DNA, the nuclear gene encoding heat shock protein 90 and the mitochondrial cox1 gene were PCR amplified and sequenced. Based on phylogenetic analysis and morphological and physiological comparison, four species and one informally designated taxon have been described; Phytophthora gibbosa, P. gregata, P. litoralis, P. thermophila and P. taxon paludosa. Phytophthora gibbosa, P. gregata and P. taxon paludosa form a new cluster and share a common ancestor; they are homothallic and generally... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Aquatic habitat; Breeding systems; Evolution; Phylogeny; Radiation; Sterility; Survival. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/532234 |
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| Piferrer, Francesc; Beaumont, Andy; Falguiere, Jean-claude; Flajshans, Martin; Haffray, Pierrick; Colombo, Lorenzo. |
| Polyploids can be defined as organisms with one or more additional chromosome sets with respect to the number most frequently found in nature for a given species. Triploids, organisms with three sets of homologous chromosomes, are found spontaneously in both wild and cultured populations and can be easily induced in many commercially relevant species of fish and shellfish. The major consequence of triploidy is gonadal sterility, which is of advantage in the aquaculture of molluscs since it can result in superior growth. In fish, the induction of triploidy is mainly used to avoid problems associated with sexual maturation such as lower growth rates, increased incidence of diseases and deterioration of the organoleptic properties. Triploidy can also be used... |
| Tipo: Text |
Palavras-chave: GMO; Transgenic containment; Genetic containment; Reproductive containment; Hybridisation; Sterility; Fish; Shellfish; Fish farming; Aquaculture; Tetraploidy; Triploidy; Polyploidy. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6648.pdf |
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