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.)
Sublethal metal stress response of larvae ofAedes aegypti
Physiological Entomology ( IF 1.5 ) Pub Date : 2014-04-01 , DOI: 10.1111/phen.12054
Mario H Perez 1 , Fernando G Noriega 1
Affiliation  

Aedes aegypti (Diptera: Culicidae) has adapted to urban environments. The urbanization process provides suitable habitats for this disease vector, subsequently increasing the probability of the transmission of pathogens in high‐density environments. Urban environments provide metal‐stressed larval habitats. However, little is known about the physiological cost of metal stress or how this might affect the performance of this mosquito species. The present study aims to characterize the sublethal physiological consequences of metal stress in Aedes aegypti. Various parameters of mosquito physiology under larval metal stress are assessed, including larval metallothionein expression and the effects of larval metal stress on adult performance and their progeny. The results show that environmentally relevant larval metal stress compromises larval and adult development and performance, and also results in larval metal tolerance along with an increase in lipid consumption. These performance costs are coupled with a dramatic increase in metallothionein expression in the midgut. Metal stress results in a lowered adult body mass and neutral storage lipids at emergence, starvation tolerance, fecundity and starvation tolerance of offspring compared with non‐metal‐stressed individuals. Ironically, larval metal stress results in increased adult longevity. Taken together, these findings indicate that even low levels of environmentally relevant larval metal stress have considerable physiological consequences for this important disease vector.

中文翻译:

埃及伊蚊幼虫的亚致死金属应激反应

埃及伊蚊(双翅目:Culicidae)已经适应了城市环境。城市化过程为这种疾病媒介提供了合适的栖息地,随后增加了病原体在高密度环境中传播的可能性。城市环境提供了金属胁迫的幼虫栖息地。然而,人们对金属压力的生理成本或这可能如何影响这种蚊子的性能知之甚少。本研究旨在表征埃及伊蚊中金属应激的亚致死生理后果。评估了幼虫金属应激下蚊子生理的各种参数,包括幼虫金属硫蛋白的表达和幼虫金属应激对成虫及其后代的影响。结果表明,与环境相关的幼虫金属应激会损害幼虫和成虫的发育和性能,并且还会导致幼虫金属耐受性以及脂质消耗的增加。这些性能成本与中肠中金属硫蛋白表达的急剧增加相结合。与非金属胁迫的个体相比,金属胁迫导致后代的成年体重和中性储存脂质降低、饥饿耐受性、繁殖力和饥饿耐受性降低。具有讽刺意味的是,幼虫金属应激导致成虫寿命延长。综上所述,这些发现表明,即使是低水平的环境相关幼虫金属应激也会对这一重要的疾病载体产生相当大的生理后果。并且还导致幼虫金属耐受性以及脂质消耗的增加。这些性能成本与中肠中金属硫蛋白表达的急剧增加相结合。与非金属胁迫的个体相比,金属胁迫导致后代的成年体重和中性储存脂质降低、饥饿耐受性、繁殖力和饥饿耐受性降低。具有讽刺意味的是,幼虫金属应激导致成虫寿命延长。综上所述,这些发现表明,即使是低水平的环境相关幼虫金属应激也会对这一重要的疾病载体产生相当大的生理后果。并且还导致幼虫金属耐受性以及脂质消耗的增加。这些性能成本与中肠中金属硫蛋白表达的急剧增加相结合。与非金属胁迫的个体相比,金属胁迫导致后代的成年体重和中性储存脂质降低、饥饿耐受性、繁殖力和饥饿耐受性降低。具有讽刺意味的是,幼虫金属应激导致成虫寿命延长。综上所述,这些发现表明,即使是低水平的环境相关幼虫金属应激也会对这一重要的疾病载体产生相当大的生理后果。与非金属胁迫的个体相比,金属胁迫导致后代的成年体重和中性储存脂质降低、饥饿耐受性、繁殖力和饥饿耐受性降低。具有讽刺意味的是,幼虫金属应激导致成虫寿命延长。综上所述,这些发现表明,即使是低水平的环境相关幼虫金属应激也会对这一重要的疾病载体产生相当大的生理后果。与非金属胁迫的个体相比,金属胁迫导致后代的成年体重和中性储存脂质降低、饥饿耐受性、繁殖力和饥饿耐受性降低。具有讽刺意味的是,幼虫金属应激导致成虫寿命延长。综上所述,这些发现表明,即使是低水平的环境相关幼虫金属应激也会对这一重要的疾病载体产生相当大的生理后果。
更新日期:2014-04-01
down
wechat
bug