Histological study of the dynamics in epidermis regeneration of the carp tail fin (Cyprinus carpio, Linnaeus, 1758)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Histology, histochemistry and stereology of the adipose fin of Prochilodus lineatus

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

First report of black rot of Colocasia esculenta caused by Ceratocystis fimbriata in Brazil

Ceratocystis fimbriata foi encontrado em tubérculos de inhame (Colocasia esculenta), apresentando lesões escuras, pouco profundas, contendo estruturas de reprodução do fungo, cuja coloração variava do cinza ao negro. As amostras foram coletadas em supermercados, quitandas e varejões nos Estados de São Paulo, Rio de Janeiro, Bahia, Rondônia e Distrito Federal que, na maioria dos casos, comercializavam inhame produzido no Estado de São Paulo. Os sintomas de podridão negra indicam se tratar de uma doença de pós-colheita. Seqüências de rDNA indicam que os isolados de Colocasia sp. pertencem ao clado da America Latina do complexo C. fimbriata, embora esses isolados sejam mais agressivos em pseudo-pecíolos de C. esculenta do que os isolados de Ficus carica e Mangifera indica.

rDNA-based characterization of a new binucleate Rhizoctonia spp. causing root rot on kale in Brazil

In this paper we present the first report of the occurrence of a binucleate Rhizoctonia spp. causing hypocotyl and root rot in kale in Brazil. Rhizoctonia spp. were isolated from kale (Brassica oleracea var. acephala) with symptoms of hypocotyl and root rot. The isolates, characterized as binucleate Rhizoctonia spp., did not show an anastomosis reaction with any of the binucleate Rhizoctonia spp. testers used. The pathogenicity of the isolates was tested under greenhouse conditions; all isolates were pathogenic and showed different symptom severities on kale. The ITS-5.8S rDNA sequences of kale isolates and 50 testers (25 binucleate Rhizoctonia spp. and 25 Rhizoctonia solani) were compared in order to characterize the genetic identity of Rhizoctonia spp. infecting kale. The kale isolates showed genetic identities ranging from 99.3 to 99.8% and were phylogenetically closely related to CAG 7 (AF354084), with identities of 98.5 and 98.7%. It is suggested that the binucleate Rhizoctonia spp. causing hypocotyl and root rot on kale Brazil comprises a new AG not yet described.

La inversión en Chile: ¿el fin de un ciclo de expansión?

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Tracking the fin trade: Genetic stock identification in western Atlantic scalloped hammerhead sharks Sphyrna lewini

Location or stock-specific landing data are necessary to improve management of shark stocks, especially those imperiled by overexploitation as a result of the international shark fin trade. In the current absence of catch monitoring directly at extraction sites, genetic stock identification of fins collected from major market supply chain endpoints offers an overlooked but potentially useful approach for tracing the fins back to their geographical, or stock of, origin. To demonstrate the feasibility of this approach, we used mitochondrial control region (mtCR) sequences to trace the broad geographical origin of 62 Hong Kong market-derived Sphyrna lewini fins. Of these fins 21% were derived from the western Atlantic, where this species is listed as 'Endangered' by the International Union for the Conservation of Nature (IUCN). We also show that S. lewini mtCR sequences are geographically segregated in the western Atlantic (overall ΦST = 0.74, n = 177 sharks), indicating that breeding females either remain close to, or home back to, their natal region for parturition. Mixed stock analysis simulations showed that it is possible to estimate the relative contributions of these mitochondrial stocks to fin mixtures in globally sourced trade hubs. These findings underscore the feasibility of using genetic stock identification to source market-derived shark fins to obtain essential and otherwise unavailable data on exploitation levels, and thus to productively inform stock assessment and management of S. lewini and potentially also of other fished shark species. © Inter-Research 2009.

Políticas alternativas y estrategias para Bolivia tras el fin de las preferencias arancelarias ATPDEA: evaluación de un acuerdo comercial con la Unión Europea

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Políticas alternativas y estrategias para el Estado Plurinacional de Bolivia tras el fin de las preferencias arancelarias ATPDEA: evaluación de un acuerdo comercial con la Unión Europea

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¿Se erosiona la competitividad de los países del DR-CAFTA con el fin del acuerdo de textiles y vestuario?

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Una escuela democrática: las interpelaciones de los jóvenes de fin de siglo

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Políticas sociales, familia y trabajo en la América Latina de fin de siglo

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Cambio y continuidad en el proceso de globalización internacional: escenarios de fin de siglo

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First report of Lasiodiplodia theobromae causing stem rot disease of begonia (Begonia x elatior hort.) in Brazil

Lasiodiplodia theobromae was found causing stem rot on commercial production of Begonia x elatior in São Paulo, Brazil. Illustrations, morphological and molecular description are provided. Based on the morphology, this fungus was recognized as L. theobromae. However, L. theobromae has high similarity with other Lasiodiplodia species, some of which are not possible to be separated by morphological characters. Molecular identification of the fungus isolated from the infected tissues was conducted. The strain from begonia clustered with other isolates of L. theobromae. This is the first report of the occurrence of L. theobromae on B. elatior. © 2012 Australasian Plant Pathology Society Inc.

¿Se erosiona la competitividad de Centroamérica y la República Dominicana con el fin del acuerdo sobre los textiles y el vestido?

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