当前位置: X-MOL 学术Physiol. Entomol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Termination of pupal diapause in the pine processionary moth Thaumetopoea pityocampa
Physiological Entomology ( IF 1.5 ) Pub Date : 2019-02-02 , DOI: 10.1111/phen.12277
Md Habibur R. Salman 1 , Folco Giomi 1 , Mathieu Laparie 2 , Philipp Lehmann 3 , Andrea Pitacco 1 , Andrea Battisti 1
Affiliation  

Diapause development is a complex process involving several eco‐physiological phases. Understanding these phases, especially diapause termination, is vital for interpreting the life history of many insect species and for developing suitable predictive models of population dynamics. The pine processionary moth is a major defoliator of pine and a vertebrate health hazard in the Mediterranean region. This species can display either univoltine or semivoltine development, with a pupal diapause extending from a few months to several years, respectively. Although the ecological and applied importance of diapause is acknowledged, its physiological regulation in either case remains obscure. In the present study, we characterize pre‐termination, termination and post‐termination phases of pupae developing as univoltine or remaining in prolonged diapause. Changes in metabolic activity are monitored continuously using thermocouples, comprising a novel method based on direct calorimetry, and periodically by use of O2 respirometry. The two methods clearly detect diapause termination in both types of pupae before any visible morphological or behavioural changes can be observed. Univoltine individuals are characterized by an increase in metabolic activity from pre‐termination through to termination and post‐termination, ultimately resulting in emergence. Remarkably, a synchronous termination is observed in individuals that enter prolonged diapause instead of emerging; however, in these pupae, the increased metabolic activity is only transient. The present study represents a starting point toward understanding the eco‐physiology of diapause development processes in the pupae of the pine processionary moth.

中文翻译:

松行蛾 Thaumetopoea pityocampa 蛹滞育的终止

滞育发育是一个复杂的过程,涉及多个生态生理阶段。了解这些阶段,尤其是滞育终止,对于解释许多昆虫物种的生活史和开发合适的种群动态预测模型至关重要。松花蛾是松树的主要落叶者,也是地中海地区脊椎动物的健康危害。该物种可以显示单伏或半伏发育,蛹滞育时间分别从几个月到几年不等。尽管滞育的生态和应用重要性得到承认,但其在任何一种情况下的生理调节仍然模糊不清。在本研究中,我们将蛹发育为单生或长期滞育的前终止、终止和终止后阶段进行表征。使用热电偶连续监测代谢活动的变化,包括一种基于直接量热法的新方法,并定期使用 O2 呼吸测量法。在观察到任何可见的形态或行为变化之前,这两种方法清楚地检测到两种类型的蛹的滞育终止。Univoltine 个体的特征是从终止前到终止和终止后代谢活动增加,最终导致出现。值得注意的是,在进入长期滞育而不是出现的个体中观察到同步终止;然而,在这些蛹中,增加的代谢活动只是暂时的。
更新日期:2019-02-02
down
wechat
bug