Complex Effects of Superior Competitors and Resources on Culex restuans (Diptera: Culicidae) Oviposition.
Complex Effects of Superior Competitors and Resources on Culex restuans (Diptera: Culicidae) Oviposition.
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优势竞争对手和资源对库蚊（双翅目：库蚊科）产卵的复杂影响。
DOI：
10.1093/jme/tjx218
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发表时间：
2018
影响因子：
2.1
通讯作者：
Juliano,StevenA
中科院分区：
文献类型：
--
作者：
Grech,MartaG;Juliano,StevenA
越来越多关于蚊子产卵行为的文献支持这样的假设，即雌性在为后代的生长、发育和成熟提供最佳机会的栖息地产卵。本研究通过野外实验，对三角伊蚊（diedes triiseriatus，双翅目：库蚊科）幼虫对库蚊产卵行为的响应、植物腐质数量及腐质中溶解态氮（TN）和磷（TP）的资源量进行了评价。结果表明：1)库蚊作为较弱的竞争对手，会避免在有优势种间竞争对手的容器中产卵；2)库蚊选择含有较多微生物食物资源的产卵生境；3)足够高的资源丰度可以克服在有种间竞争对手的容器中产卵的回避。唯一产卵的蚊种为黄纹库蚊（双翅目：库蚊科），其产卵反应随时间变化而变化。在实验开始和结束时，资源的影响在推动产卵决策方面更为重要。总氮和总磷的浓度对产卵量有不同的影响。初期雌蜂在低腐质、TN最高的容器中产卵较多，之后雌蜂倾向于高腐质、TN低、TP高的容器。竞争对手的影响只在实验的中间阶段是重要的。矛盾的是，即使作为一个较差的竞争对手。餐厅优先放置于较晚安装的容器内。表明成功的异种虫的存在预示着优质的幼虫栖息地。
A growing body of literature on mosquito oviposition behavior supports the hypothesis that females place eggs in habitats that provide best available opportunity for growth, development, and maturation of their offspring. We conducted a field experiment to evaluateCulexoviposition behavior in response to the interspecific competitorAedes triseriatus(Say) (Diptera: Culicidae) larvae, and resources in the form of quantity of plant detritus, and dissolved nitrogen (TN) and phosphorus (TP) derived from that detritus. We tested a set of specific predictions: 1) As a poorer competitor,Culexwill avoid ovipositing in containers with superior interspecific competitors; 2)Culexchoose oviposition habitats that contain greater amount of resources for the microbial food of their offspring; 3) Sufficiently high resource abundance can override avoidance of oviposition in containers with interspecific competitors.Culex restuansTheobald (Diptera: Culicidae) was the only species ovipositing, and the oviposition responses changed over time. The effect of resources was more important in driving oviposition decisions at the beginning and end of the experiment. The amount of resources, as manifest by TN and TP concentrations, had differential effects on oviposition. At the beginning females laid more eggs in containers with low detritus, which had the highest TN. After that, females preferred those containers with high detritus, which had low TN and high TP. The effect of competitors was important only during the middle of the experiment. Paradoxically, even as a poorer competitorCx. restuanspreferentially oviposited in containers with late-instarAe. triseriatus, suggesting that the presence of successful heterospecifics indicates a good quality larval habitat.