TY - JOUR
T1 - The neogregarine protozoan Farinocystis sp. reduces longevity and fecundity in the West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire)
AU - Kumano, Norikuni
AU - Iwata, Noriko
AU - Kuriwada, Takashi
AU - Shiromoto, Keiko
AU - Haraguchi, Dai
AU - Yasunaga-Aoki, Chisa
AU - Kohama, Tsuguo
PY - 2010/11/1
Y1 - 2010/11/1
N2 - The number of West Indian sweet potato weevils, Euscepes postfasciatus, being mass-reared in a facility for use in sterile insect technique (SIT) eradication programs has undergone a drastic reduction. A neogregarine protozoan pathogen Farinocystis sp. (an undescribed species) was detected in vivo in the mass-reared E. postfasciatus. We investigated the effects of this disease on the longevity and fecundity of host weevils and the incubation time of the disease in the host body under mass-rearing conditions. Our results demonstrated that infection by this Farinocystis sp. decreased both longevity and fecundity in E. postfasciatus. In particular, the pathogen severely limited the production of progeny by infected females compared to healthy females. Therefore, we consider this protozoan infection to be the major cause of the decreased E. postfasciatus production in the mass-rearing facility.
AB - The number of West Indian sweet potato weevils, Euscepes postfasciatus, being mass-reared in a facility for use in sterile insect technique (SIT) eradication programs has undergone a drastic reduction. A neogregarine protozoan pathogen Farinocystis sp. (an undescribed species) was detected in vivo in the mass-reared E. postfasciatus. We investigated the effects of this disease on the longevity and fecundity of host weevils and the incubation time of the disease in the host body under mass-rearing conditions. Our results demonstrated that infection by this Farinocystis sp. decreased both longevity and fecundity in E. postfasciatus. In particular, the pathogen severely limited the production of progeny by infected females compared to healthy females. Therefore, we consider this protozoan infection to be the major cause of the decreased E. postfasciatus production in the mass-rearing facility.
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U2 - 10.1016/j.jip.2010.08.003
DO - 10.1016/j.jip.2010.08.003
M3 - Article
C2 - 20736016
AN - SCOPUS:77958189476
VL - 105
SP - 298
EP - 304
JO - Journal of Invertebrate Pathology
JF - Journal of Invertebrate Pathology
SN - 0022-2011
IS - 3
ER -