Container mosquitoes and microorganism productivity

容器蚊子和微生物生产力

基本信息

批准号：
6617768
负责人：
STEVEN A JULIANO
金额：
$ 14万
依托单位：
ILLINOIS STATE UNIVERSITY
依托单位国家：
美国
项目类别：
财政年份：
2003
资助国家：
美国
起止时间：
2003-05-02 至 2007-04-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/6617768
关键词：
Culicidae animal population density disease vectors environmental contamination field study geographic difference guinea pigs laboratory mouse microorganism growth microorganism population study species difference

项目摘要

DESCRIPTION (provided by the applicant): Although the quantity of detritus entering water-filled containers has well-known positive effects on performance mosquitoes such as Ochlerotatus triseriatus (vector of LaCrosse encephalitis) and Aedes albopictus (vector of dengue and other viruses), the mechanistic connection between detritus and mosquito production is less well understood. Most container mosquitoes do not feed detritus itself (leaves, insect carcasses, and nutrient-bearing stem flow), but rather on bacteria, fungi, and protozoans that form a food chain with detritus at its base. The few studies that have investigated the relationship between microorganism populations and detritus amounts or types have done so by measuring static densities of microbes, but such counts do not represent rates of productivity. It is the rate of conversion of these detritus resources to edible microorganism biomass that determines production of mosquito adults, and perhaps the composition of local container mosquito communities. We will determine how changes in the types and amounts of detritus inputs into containers affect the productivity (measured as rates of consumption of oxygen and leucine incorporation into protein) of microorganism communities, and how microorganism productivity translates into the performance Oc. triseriatus and Ae. albopictus, as well as the invertebrate community with which they exist. Our first specific aim is to determine how detritus input rates vary between tree holes (primary habitat of Oc. triseriatus) and tires (primary habitat of Ae. albopictus), and how these rates of input vary in space and time. We will use this information to pursue our second aim, determining how input rates are correlated with microorganism productivity in the field, and our third aim, determining how composition of detritus input determines microorganism productivity under controlled conditions. Our fourth aim is to determine how detritus composition, and associated differences in microorganism productivity affect the outcome of competition between Oc. triseriatus and Ae. atbopictus. Our fifth aim is to use information from aims 1 - 3 as a base for a field experiment to determine how changing total amount and rate of input of detritus to containers affects abundance of mosquitoes and invertebrate diversity in nature. This research will increase our knowledge of determinants of vector mosquito production and distribution and abundance.

描述（由申请人提供）：尽管进入水填充容器的碎屑量对诸如triserotatus triseriatus（曲棍球脑炎的载体）和艾德斯白化病（Decter of Dengue and dengue和其他病毒的载体）等性能蚊子具有众所周知的积极作用，但在Mosquito中的机械性却不足。大多数容器蚊子都不喂食碎屑本身（叶子，昆虫尸体和含有营养的茎的流动），而是在细菌，真菌和原生动物上，它们在其基部形成食物链。通过测量微生物的静态密度来研究微生物种群与碎屑量或类型之间关系的少数研究，但这些计数并不代表生产率的速率。这些碎屑资源转化为可食用的微生物生物量的速度决定了蚊子成年人的产生，也许是当地容器蚊子群落的组成。我们将确定微生物群落的生产力（以氧气和亮氨酸掺入蛋白质的消耗率）中的碎屑输入的类型和量如何影响生产率（衡量的量），以及微生物生产力如何转化为性能OC。 Triseriatus和Ae。白化病以及与之存在的无脊椎动物社区。我们的第一个具体目的是确定碎屑输入率在树孔（triseriatus的主要栖息地）和轮胎（AE。Bopotus的主要栖息地）之间如何变化，以及这些输入速率在时空和时间上如何变化。我们将使用这些信息来追求我们的第二个目标，确定输入率与该领域的微生物生产率如何相关，而我们的第三个目标确定了碎屑输入的组成如何确定在受控条件下的微生物生产力。我们的第四个目标是确定碎屑组成以及微生物生产力的相关差异如何影响OC之间的竞争结果。 Triseriatus和Ae。 Atbopictus。我们的第五个目标是使用目标1-3的信息作为现场实验的基础，以确定碎屑对容器的总数和投入率如何影响蚊子的丰度和自然界的无脊椎动物多样性。这项研究将增加我们对媒介蚊子生产和分布和丰度的决定因素的了解。