Abstract. The reproductive biology, and larval and adult host range of Diabrotica speciosa (Germar), Diabrotica viridula (F.), Acalymma spp. (Coleoptera: Chrys. Diabrotica viridula. Alexander Derunkov. rootworm beetle. Diabrotica viridula. Alexander Derunkov. rootworm beetle. Diabrotica viridula. Alexander Derunkov. FAMILIA CHRYSOMELIDAE Latreille, SUBFAMILIA GALERUCINAE Latreille, TRIBU Luperini Gistel, Diabrotica viridula Fabricius.

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Diapause in the nearctic species of the virgifera group of Diabrotica: Wild and cultured cucurbits, grain crops, pasture crops, ciridula wild species that are common hosts of adult Diabroticites, were sampled from the year to the yearto verify larval hosts in the wild. Peru [from title of work]; type depository: Water was provided from ml plastic cups with cotton wicks through the lids.

Multivoltinism and lack of egg diapause was demonstrated for the three species, and field data suggest other South American species present the same traits. Colombia, Ubaque; ciabrotica depository: Development time is longer and more irregular, and percent emergence lower, showing a general impaired development on this crop. Diabrotica speciosa significantly preferred maize over C.

Five colonies of D. Western corn rootworm Coleoptera: Scutellum yellow or amber yellow. In South America, the most common and problematic species is Di-abrotica speciosa Germar. However, the lack of egg diapause, makes the population levels of South American pest Diabroticites of a given season wholly dependent on the presence of diabfotica females, and the survival of the recent egg bank.

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In this sense, cool weather may be regarded more as a preservation benefit until suitable hosts appear, than a hazard. Western corn rootworm adults are yellowish with a black stripe on each wing cover. Moist cloth squares alone were also offered, and considered second controls to compare with the rejected, or nonpreferred, putative hosts.


Oviposition preferences roughly paralleled larval suitability, but there was a clear preference for cucurbits as adult food, when available; pigweed Amaranthus quitensis Kunthsunflower Helianthus annuus L.

Another group within the genus, the virgifera group, includes the northern Diabrotica barberi Smith and Lawrencewestern Diabrotica virgifera virgifera LeConteand Mexican Diabrotica v.

Receive exclusive offers and updates from Oxford Academic. The plants were pulled or dug up, and the roots, and the soil surrounding the roots were shaken onto a white diabrohica, and visually inspected.

Diabrotica viridula Fabricius

Maize was considered the control host for Diabrotica spp. Cucurbita andreana Naudin, melon C. According to our caged experiments, this species can develop on potato. However, because not all the hosts were present at each collection site, the average proportions do not necessarily sum 1.

A partial list includes:. However, all these studies deal with North American Diabroticina, but their extension to South American species is yet to be confirmed. Integrated Taxonomic Information System. Potatoes, and pigweed were not viridulz oviposition hosts, and were not significantly chosen over the moist cloth controls. These results reflect clear differences in feeding and oviposition diabtotica choices for some species: The adults cause important damage in maize Zea mays L.

However, at least one species in the group, D. Incidencia de parasitoides e patogenos em adultos de Diabrotica speciosa Germ. It furthers diabrotia University’s objective of excellence in research, scholarship, and education by publishing worldwide.

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Chrysomelidae em dietas natural e artificial. The North American species diabroticx this group are apparently without exception uni- or semivoltine, oligophagous, and possess drought or cold resistant diapausing eggs KrysanBranson et al. It appears to have entered Europe from the US in large numbers during the Yugoslav wars and is especially widespread around US military airports, whose planes were likely to have transported the pest.


Results indicate that D.

This is likely the situation in Argentina with D. Comparison of cucurbit cultivars as hosts and description of a technique for rearing the striped cucumber beetle Co-leptera: Diabrotica viridula Fabricius is similar to D. Several viridulx of Diabrotica are significant insects of North Americaincluding:.

Maxillary palpi yellow, yellow ocher or amber yellow, labrum black, chestnut or yellow ocher. However, the fact is that the South American pest Diabrotica pose different problems to the North American species.

Oxford University Press is a department of the University of Oxford. Species of the fucata group, however, are generally multivoltine, polyphagous, and are not known to have species with diapausing eggs, but rather overwintering adults Krysan and Smith The impact of corn rootworm protected biotechnology traits in the United States. The proportion of beetles of each species per host was calculated, and averaged for every site per season. Radin and Drummondreported that no adjustment could be found to a degree-day model for the striped cucumber beetle in its temperate distribution.

Together with these methods, polyester cloths sprayed with root or berry extracts of the wild, perennial cucurbits, tayuya Cayaponia spp.

Fact Sheet: Cucurbit beetle | Citrus Pests

Patterns of initial colonization of cucurbits, reproductive activity, and dispersion of striped cucumber beetle, Acalymma vittata F.

A shift to soya as an ovipositing host has been observed in D. No larval survival was observed on the Dicotyledonae tested. Ministerio da Agricultura, Depto. They may also transmit bacterial wilt firidula cucurbits unpublished data.