Artigo
Development of pachycoris torridus (hemiptera: scutelleridae) on jatropha curcas (euphorbiaceae), psidium cattleianum (myrtaceae) and aleurites fordii (euphorbiaceae)
Registro en:
Florida Entomologist. Lutz: Florida Entomological Soc, v. 96, n. 3, p. 1149-1157, 2013.
0015-4040
WOS:000325587100056
WOS000325587100056.pdf
2788156792532870
0000-0003-0769-9902
Autor
Borges Filho, Raul Da Cunha
Pratissoli, Dirceu
Nava, Dori Edson
Monte, Fernanda Garcia
Guidoni, Antonio Lourenco
Dos Anjos E Silva, Sergio Delmar
Polanczyk, Ricardo Antonio [UNESP]
Resumen
Pachycoris torridus (Scopoli, 1772) (Hemiptera: Scutelleridae) is a polyphagus insect and is traditionally considered the key-pest of jatropha (Jatroph acurcas L.; Malpighiales: Euphorbiaceae); however, occurrences of this pest have also been observed on strawberry guava (Psidium cattleianum Sabine; Myrtales: Myrtaceae) and the tung tree (Aleurites fordii Hemsl.; Malpighiales: Euphorbiaceae). This study investigated the development of P. torridus in fruits of jatropha, strawberry guava and tang to provide information for phytosanitary management of this pest. We evaluated the biological parameters in the nymphal and adult stages of the pest at 25 2 C, RH 70 10% and 12:12 h (L:D). Nymphs of P. torridus did not develop in fruits of tung. In fruits ofjatropha and strawberry guava, P. torridus had 5 instars of nymphal development with variable durations and survival rates. The nymphal stage showed durations and viabilities of 55 days and 33.7% and 56.1 days and 38.9% in strawberry guava and jatropha, respectively. The sex ratio (proportion of females in the population) was 0.6 in strawberry guava and 0.5 in jatropha. The weights of adult females and males were greater in jatropha (152.0 and 117.2 mg) than in strawberry guava (127.9 and 105.9 mg). Females fed with jatropha showed a longer pre-oviposition period and shorter periods of oviposition and post-oviposition than those fed on strawberry guava. Fecundity was similar in both treatments (hosts). Fruits of strawberry guava and jatropha are adequate for the development and reproduction of P. torridus. Financiadora de Estudos e Projetos (Finep, Brazilian Financing Agency for Studies and Projects) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Univ Fed Pelotas, Fac Agron Eliseu Maciel, BR-96010900 Pelotas, RS, Brazil Univ Fed Espirito Santo, Ctr Ciencias Agrarias, BR-29500000 Alegre, ES, Brazil Embrapa Clima Temperado, BR-96010971 Pelotas, RS, Brazil Univ Estadual Paulista Julio Mesquita, Fac Ciencias Agrarias & Vet, BR-14884900 Jaboticabal, SP, Brazil Univ Estadual Paulista Julio Mesquita, Fac Ciencias Agrarias & Vet, BR-14884900 Jaboticabal, SP, Brazil