A Study on Respiratory horns on Pupa of Mushroom Pest, Coboldia fuscipes (Diptera: Scatopsidae)

버섯해충 Coboldia fuscipes (Diptera: Scatopsidae) 번데기 호흡뿔에 관한 연구

  • 최광호 (동아대학교 생명자원과학대학) ;
  • 김성렬 (동아대학교 생명자원과학대학) ;
  • 조은숙 (동아대학교 생명자원과학대학) ;
  • 배진식 (동아대학교 생명자원과학대학) ;
  • 진병래 (동아대학교 생명자원과학대학) ;
  • 양원진 (동아대학교 생명자원과학대학) ;
  • 손흥대 (동아대학교 생명자원과학대학)
  • Published : 1999.12.01

Abstract

This study was aimed to elucidate the physiological function of a pair of protuberances like bifurcated horns developed on the anterior part of pupa in Coboldia fuscipes (Diptera: Scatopsidae), a pest on the oyster mushroom. In the morphological characteristics, larvae had a pair of 0.04 mm long microspines at their second body segment. Pupae had a pair of protuberances like bifurcated horns of 0.55 mm long on the anterior part and six pairs of spines, 0.12 mm long, at the posterior part of the abdomen. The microspines-removed 4th instar C. fuscipes larvae developed into pupae without a pair of the protuberances. After emergence, however, the adults have a pair of antenna normal regardless of with or without the protuberances. As ecological characteristics at the pupation, the pupa without a pair of the protuberances have a tendency to pupate outside the medium. However, development characteristics of the microspines-removed larvae were very similar to those of control larvae. In the result of microscopic observation, a pair of the protuberances was connected wit six pairs of spines by lateral longitudinal trunck and formed a tracheal system. In conclusion, this results implicates that the protuberances have an important role as a respiratory horn during the pupal period.