Coexistence of three different Drosophila species by rescheduling their life history traits in a natural population

Journal of genetics

Jay P. Yadav1 2¹  Bashisth N. Singh1¹ 

[1] Genetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221 005, India$$

关键词: Drosophila species;    coexistence;    body size;    W/T ratio;    life history traits;    tradeoffs.;   

DOI  :  

学科分类：生物科学（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We present evidence for coexistence of three different Drosophila species by rescheduling their life history traits in a natural population using the same resource, at the same time and same place. D. ananassae has faster larval development time (DT) and faster DT(egg-fly) than other two species thus utilizing the resources at maximum at both larval and adult stages respectively. Therefore, D. ananassae skips the interspecific competition at preadult stage but suffers more from intraspecific competition. However, D. melanogaster and D. biarmipes have rescheduled their various life history traits to avoid interspecific competition. Differences of ranks tests for various life history traits suggest that except for DT(egg-pupa), the difference of ranks is highest for the combination of D. melanogaster and D. ananassae for all other life history traits. This difference is maintained by tradeoffs between larval development time and pupal period and between pupal period and DT(egg-pupa) in D. ananassae.

【 授权许可】

Unknown