Characterization of the imaginal reproductive diapause of Oebalus poecilus (Dallas) (Hemiptera: Pentatomidae)

Brazilian Journal of Biology

R. S. S. Santos²  L. R. Redaelli²  L. M. G. Diefenbach²  H. P. Romanowski²  H. F. Prando¹ 

[1] ,Universidade Federal do Rio Grande do SulPorto Alegre RS

关键词: overwintering;    small rice stink bug;    reproductive organs;    hibernação;    percevejo-do-grão;    órgãos reprodutivos;   

DOI  :  10.1590/S1519-69842003000400017

来源: SciELO

【 摘 要 】

The state of development of the internal reproductive organs of male and female Oebalus poecilus (Dallas) as well as the body fat amount in the abdominal cavity during hibernation, of individuals sampled in bamboo litter in Eldorado do Sul (30º02'S and 51°23'W), RS, Brazil was investigated. Females and males showed the abdominal cavity filled with body fat in the beginning of the hibernation phase. The decrease in fat reserve level occurred from August on for males and from October on for females. Ovaries and testis doubled in length and tripled in width from immature to the reproductive phase. Male sexual maturation occurred in the hibernation sites while for females it occurred later on outside of the sites. Reproductive organ immaturity and abdominal body fat hypertrophy characterized the diapause of O. poecilus.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License