| resistance to tecia solanivora (lepidoptera: gelechiidae) in three transgenic andean varieties of potato expressing bacillus thuringiensis crylac protein. | transgenic potato, solanum tuberosum l., plants containing a synthetic cry1ac gene coding for the bacillus thuringiensis (bt) crystalline insecticidal protein were produced and evaluated for resistance to tecia solanivora povolny (lepidoptera: gelechiidae), the larvae of which attack potato tubers. in total, 43 transgenic lines of commercial andean potato varieties diacol capiro, pardo pastusa, and pandeazúcar were obtained. these transgenic lines were found to have one to four copies of cry1ac ... | 2007 | 17370825 |
| temperature as a key driver of ecological sorting among invasive pest species in the tropical andes. | invasive species are a major threat to the sustainable provision of ecosystem products and services, both in natural and agricultural ecosystems. to understand the spatial arrangement of species successively introduced into the same ecosystem, we examined the tolerance to temperature and analyzed the field distribution of three potato tuber moths (ptm, lepidoptera: gelechiidae), that were introduced in ecuador since the 1980s. we studied physiological responses to constant temperatures of the th ... | 2008 | 18839773 |
| activity of bacillus thuringiensis hybrid protein against a lepidopteran and a coleopteran pest. | the use of cry proteins from bacillus thuringiensis are an important strategy for biological control. recently it has been demonstrated that cry hybrid proteins (by domain swapping) resulted in improved toxicities in comparison with parental proteins. here, an sn1917 hybrid toxin was constructed and tested against colombian pest insects tecia solanivora (lepidoptera: gelechiidae), a severe potato pest, and hypothenemus hampei (coleoptera: scolytidae), which attacks coffee crops. the sn1917 proto ... | 2010 | 20002185 |
| community-based participatory research helps farmers and scientists to manage invasive pests in the ecuadorian andes. | participatory research has not been a conspicuous methodology in developing nations for studying invasive pests, an increasing threat to the sustainable development in the tropics. our study presents a community-based monitoring system that focuses on three invasive potato tuber moth species (ptm). the monitoring was developed and implemented by young farmers in a remote mountainous area of ecuador. local participants collected data from the ptm invasion front, which revealed clear connection be ... | 2010 | 20799682 |
| the enemy as ally: herbivore-induced increase in crop yield. | there is increasing global concern over the risk of food shortage and instability, and a concomitant demand for an increase in food production. however, the continuing expansion of agricultural areas threatens natural habitats as well as human and ecosystem health. one option for increasing food production is to maximize yields from existing farmland. here we demonstrate that larval feeding by the guatemalan potato moth (tecia solanivora), considered one of the most economically important potato ... | 2010 | 21049868 |
| development of a viral biopesticide for the control of the guatemala potato tuber moth tecia solanivora. | the guatemala potato tuber moth tecia solanivora (povolny) (lep. gelechiidae) is an invasive species from mesoamerica that has considerably extended its distribution area in recent decades. while this species is considered to be a major potato pest in venezuela, colombia, and ecuador, currently no specific control methods are available for farmers. to address this issue we developed a biopesticide formulation to be used in integrated pest management of t. solanivora, following three steps. first ... | 2013 | 23232473 |
| experimental mixtures of phthorimaea operculella granulovirus isolates provide high biological efficacy on both phthorimaea operculella and tecia solanivora (lepidoptera: gelechiidae). | the guatemalan potato moth tecia solanivora (povolny) recently invaded part of south america, colonizing zones where phthorimaea operculella (zeller), another potato moth species belonging to the same group, was previously established. t. solanivora is now the major insect pest of potato in this area encompassing venezuela, colombia and ecuador. p. operculella granulovirus (phopgv) (betabaculovirus) is a biocontrol agent to be considered for the simultaneous management of these two potato pests, ... | 2012 | 22575733 |
| genetic and biological analysis of colombian phthorimaea operculella granulovirus isolated from tecia solanivora (lepidoptera: gelechiidae). | tecia solanivora (lepidoptera: gelechiidae) is an invasive potato pest of the north of south america that recently colonized zones where phthorimaea operculella (lepidoptera: gelechiidae), a taxonomically related insect, was established. nowadays, both species can be found in most areas in different proportions. the phthorimaea operculella granulovirus (phopgv) was found to efficiently control p. operculella and was used as a biopesticide in storage conditions. however, no appropriate biological ... | 2010 | 20870793 |
| potato tuber herbivory increases resistance to aboveground lepidopteran herbivores. | plants mediate interactions between aboveground and belowground herbivores. although effects of root herbivory on foliar herbivores have been documented in several plant species, interactions between tuber-feeding herbivores and foliar herbivores are rarely investigated. we report that localized tuber damage by tecia solanivora (guatemalan tuber moth) larvae reduced aboveground spodoptera exigua (beet armyworm) and spodoptera frugiperda (fall armyworm) performance on solanum tuberosum (potato). ... | 2016 | 27147449 |