Publications

ecological observations on lymnaea (bullastra) cumingiana.	field surveys conducted at echague, isabela and san pablo, laguna revealed that lymnaea (bullastra) cumingiana, the natural second snail intermediate host of echinostoma malayanum in the philippines, exhibits a moderate degree of diversity in its choice of habitats. rice fields of all stages of development, stagnant shallow streams and springs are the main areas where the snail can be collected from at echague, isabela. however, they were absent in rice fields that had been extensively sprayed w ...	1993	8160069
genetic composition and complexity of virus populations at tungro-endemic and outbreak rice sites.	we have recently demonstrated the geographic isolation of rice tungro bacilliform virus (rtbv) populations in the tungro-endemic provinces of isabela and north cotabato, philippines. in this study, we examined the genetic structure of the virus populations at the tungro-outbreak sites of lanao del norte, a province adjacent to north cotabato. we also analyzed the virus populations at the tungro-endemic sites of subang, indonesia, and dien khanh, vietnam. total dna extracts from 274 isolates were ...	2000	11205110
inter- and intra-site genetic diversity of natural field populations of rice tungro bacilliform virus in the philippines.	the genetic structure of rice tungro bacilliform virus (rtbv) populations within and between growing sites was analyzed in a collection of natural field isolates from different rice varieties grown in eight tungro-endemic sites of the philippines. total dna extracts from 345 isolates were digested with ecorv restriction enzyme and hybridized with a full-length probe of rtbv, a procedure shown in preliminary experiments capable of revealing high levels of polymorphism in rtbv field isolates. in t ...	2000	10752553