Sterility of the coffee berry borer, Hypothenemus hampei (Coleoptera: Curculionidae), caused by the nematode Metaparasitylenchus hypothenemi (Tylenchidae: Allantonematidae)
Periodo de realización: 0001/01/01 al 2019/01/01
Tipo: Artículo científico
Lugar(es) de estudio: Tapachula de Córdova y Ordoñez, Chis., México
Resumen: "Metaparasitylenchus hypothenemiisanendoparasiticnematodethat causes partial or total sterility of co?ee berry borer (Hypothenemus hampei) females, although the causes are unknown. Fecundity and the average size of the common and lateral oviduct, vitellarium, and germarium in the four ovarioles (I, II, III and IV) were compared between parasitised and non-parasitised insects to determine the causes of sterility. The nematode significantly lowers the number of oocytes and 86% of parasitised insects (24 out of 28 insects) were sterile, while fecundity in the remaining 13% was non-signifcantly diferent to that in non-parasitised insects. No signifcant diferences were recorded in the size of the common oviduct, lateral oviduct, vitellarium, and germarium between parasitised and non-parasitised insects and the nematode does not cause any apparent damage on the surface of the ovary."