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首页> 外文期刊>Journal of Medical Entomology >Detritus type alters the outcome of interspecific competition between Aedes aegypti and Aedes albopictus (Diptera: Culicidae).
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Detritus type alters the outcome of interspecific competition between Aedes aegypti and Aedes albopictus (Diptera: Culicidae).

机译：碎屑类型改变埃及伊蚊与白纹伊蚊之间的竞争结果（双翅目：)科）。

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摘要

Many studies of interspecific competition between Aedes albopictus (Skuse) and Aedes aegypti (L.) (Diptera: Culicidae) larvae show that Ae. albopictus are superior resource competitors to Ae. aegypti. Single-species studies indicate that growth and survival of Ae. albopictus and Ae. aegypti larvae are affected by the type of detritus present in containers, which presumably affects the amount and quality of microorganisms that the mosquito larvae consume. We tested whether different detritus types alter the intensity of larval competition by raising 10 different density/species combinations of Ae. albopictus and Ae. aegypti larvae under standard laboratory conditions, with one of four detritus types (oak, pine, grass, or insect) provided as a nutrient base. Intraspecific competitive effects on survival were present with all detritus types. Ae. albopictus survivorship was unaffected by interspecific competition in all treatments. Negative interspecific effects on Ae. aegypti survivorship were present with three of four detritus types, but absent with grass. Estimated finite rate of increase (lambda') was lower with pine detritus than with any other detritus type for both species. Furthermore, Ae. aegypti lambda' was negatively affected by high interspecific density in all detritus types except grass. Thus, our experiment confirms competitive asymmetry in favor of Ae. albopictus with oak, pine, or insect detritus, but also demonstrates that certain detritus types may eliminate interspecific competition among the larvae of these species, which may allow for stable coexistence. Such variation in competitive outcome with detritus type may help to account for observed patterns of coexistence/exclusion of Ae. albopictus and Ae. aegypti in the field.
机译：白纹伊蚊（Skuse）和埃及伊蚊（L.）（Diptera：Culicidae）幼虫之间种间竞争的许多研究表明，Ae。 albopictus是Ae的优质资源竞争对手。埃及。单物种研究表明Ae的生长和存活。 albopictus和Ae。埃及幼虫受到容器中碎屑类型的影响，这大概会影响蚊虫幼虫消耗的微生物的数量和质量。我们测试了不同的碎屑类型是否通过提高10种不同密度/物种的Ae组合来改变幼虫竞争的强度。 albopictus和Ae。埃及laboratory幼虫在标准实验室条件下，以四种碎屑（橡木，松木，草皮或昆虫）之一作为营养基础。所有碎屑类型均存在种内竞争对生存的影响。 e在所有治疗中，白种动物的生存不受种间竞争的影响。种对Ae的负面影响。埃及碎屑幸存者存在于四种碎屑类型中的三种，但没有草。两种碎屑的估计的有限增加率（lambda'）均低于其他碎屑类型。再说除草外，所有碎屑类型的高种间密度都对埃及古兰经产生负面影响。因此，我们的实验证实了有利于Ae的竞争性不对称性。白栎与橡树，松树或昆虫的碎屑，但也表明某些碎屑类型可以消除这些物种幼虫之间的种间竞争，从而可以稳定地共存。碎屑类型的竞争结果的这种变化可能有助于解释观察到的Ae共存/排斥的模式。 albopictus和Ae。在该地区的埃及。

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