Comparison of fatty acid contents and composition in major lipid classes of larvae and adults of mosquitoes (Diptera: Culicidae) from a steppe region
Comparison of fatty acid contents and composition in major lipid classes of larvae and adults of mosquitoes (Diptera: Culicidae) from a steppe region
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草原地区蚊子（双翅目：蚊科）幼虫和成虫主要脂质类别的脂肪酸含量和组成比较
作者：
N. Sushchik;Y. A. Yurchenko;M. Gladyshev;O. Belevich;G. Kalachova;A. Kolmakova
包括蚊子在内的新兴水生昆虫已知会向陆地生态系统转移特定的基本生化物质，如多不饱和脂肪酸（PUFA）。研究了我国蚊科优势种群（双翅目：库蚊科），即：信息按蚊、沙纹按蚊、库纹按蚊、库纹按蚊、库纹按蚊的脂肪酸组成及含量。近年来,Oc。euedes, Oc。subdiversus, Oc。葡萄球菌（cataphylla）和灰伊蚊（Aedes cinereus）居住在温带的草原湿地，填补了它们在脂质知识方面的空白。比较了幼虫和成虫的极性脂质和三酰甘油组分。在大多数研究的蚊子物种中，我们首先发现并鉴定了一些短链PUFA，例如，突出的14:2n‐6和14:3n‐3，这在生物体内没有早期的文献记载。这些多聚脂肪酸虽然在成年蚊子中含量很低，但有可能作为陆地食物网中蚊子生物量的标记物。我们假设这些酸可能是由蚊子合成（或反向转化）的。利用甘油三酯中积累的FA营养标记物，了解蚊虫的营养关系。幼虫的饮食包括绿藻、隐生植物和鞭毛藻，并为蚊子提供必需的n - 3 PUFA、亚麻酸和二十碳五烯酸。结果表明，所研究的蚊子的幼虫和成虫都具有较高的必需多聚脂肪酸含量。极性脂质与储存脂质中FA比例的比较表明，在蚊子蜕变过程中，必需的二十碳五烯酸和花生四烯酸从幼虫储存脂质中的储备转移到成虫的功能性极性脂质中。
Emerging aquatic insects, including mosquitoes, are known to transfer to terrestrial ecosystems specific essential biochemicals, such as polyunsaturated fatty acids (PUFA). We studied fatty acid (FA) composition and contents of dominant mosquito populations (Diptera: Culicidae), that is, Anopheles messeae, Ochlerotatus caspius, Oc. flavescens, Oc. euedes, Oc. subdiversus, Oc. cataphylla, and Aedes cinereus, inhabited a steppe wetland of a temperate climate zone to fill up the gap in their lipid knowledge. The polar lipid and triacylglycerol fractions of larvae and adults were compared. In most studied mosquito species, we first found and identified a number of short‐chain PUFA, for example, prominent 14:2n‐6 and 14:3n‐3, which were not earlier documented in living organisms. These PUFA, although occurred in low levels in adult mosquitoes, can be potentially used as markers of mosquito biomass in terrestrial food webs. We hypothesize that these acids might be synthesized (or retroconverted) by the mosquitoes. Using FA trophic markers accumulated in triacylglycerols, trophic relations of the mosquitoes were accessed. The larval diet comprised green algae, cryptophytes, and dinoflagellates and provided the mosquitoes with essential n‐3 PUFA, linolenic, and eicosapentaenoic acids. As a result, both larvae and adults of the studied mosquitoes had comparatively high content of the essential PUFA. Comparison of FA proportions in polar lipids versus storage lipids shown that during mosquito metamorphosis transfer of essential eicosapentaenoic and arachidonic acids from the reserve in storage lipids of larvae to functional polar lipids in adults occurred.
影响因子：
23.8
作者：
Arrese EL;Soulages JL
通讯作者：
Soulages JL
捕食者 Toxorhynchites theobaldi (Dyar) 胚胎后发育过程中脂肪体的变化
影响因子：
1.8
作者：
Pascini,TV;Albeny,DS;Ramalho-Ortigão,M;Vilela,EF;Serrão,JE;Martins,GF
通讯作者：
Martins,GF