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首页> 外文期刊>Journal of Parasitology >THE BEHAVIOR RESPONSE OF AMPHIPODS INFECTED BY HEDRURIS SUTTONAE (NEMATODA) AND PSEUDOCORYNOSOMA SP (ACANTHOCEPHALA)
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THE BEHAVIOR RESPONSE OF AMPHIPODS INFECTED BY HEDRURIS SUTTONAE (NEMATODA) AND PSEUDOCORYNOSOMA SP (ACANTHOCEPHALA)

机译：沙门氏菌（线虫）和假单胞菌SP（棘皮动物）感染的两栖动物的行为反应

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摘要

The manipulation of intermediate host behavior may increase chances of parasite transmission to the definitive host. In freshwater environments of the Neotropical Region, studies on behavioral manipulations by parasites are rare, and the majority of these consider only a single parasite species and/or 1 life stage of a particular parasite species. In Andean Patagonian lakes of Argentina, the amphipod Hyalella patagonica is infected by larvae of the fish nematode Hedruris suttonae and by the bird acanthocephalan Pseudocorynosoma sp. The 3 objectives of the present study were to determine whether H. suttonae and Pseudocorynosoma sp. differ in their effects on behavior of H. patagonica, whether such modification is associated with parasite development, and to assess the associations between behavioral traits. From naturally parasitized amphipods, activity (swimming levels) and phototaxis (light preference) was measured. Only in phototaxis trials did larvae of H. suttonae induce significantly higher levels of photophilia, suggesting that they are manipulative. Scores of activity and phototaxis were positive and significantly related for non-parasitized female amphipods and for amphipods parasitized by larvae of Pseudocorynosoma sp. but were not associated in amphipods parasitized with larvae of H. suttonae (infective and non-infective), suggesting that infection separated the relationship between these variables.
机译：中间宿主行为的操纵可能会增加寄生虫向最终宿主传播的机会。在新热带地区的淡水环境中，很少有关于寄生虫行为操纵的研究，并且大多数研究仅考虑单个寄生虫物种和/或特定寄生虫物种的1个生命阶段。在阿根廷的安第斯巴塔哥尼亚湖中，两栖纲Hyalella patagonica感染了鱼线虫Hedruris suttonae的幼虫和鸟棘头目Pseudocorynosoma sp。本研究的3个目标是确定s。suttonae和Pseudocorynosoma sp。它们对H. patagonica行为的影响是否不同，这种修饰是否与寄生虫发育有关，以及评估行为特征之间的联系。从自然寄生的两栖动物中，测量活性（游泳水平）和趋光性（光偏爱）。仅在趋光性试验中，H。suttonae的幼虫诱导了更高水平的亲光性，表明它们具有操纵性。未寄生的雌性两栖类动物和被假单胞菌幼虫寄生的两栖类动物的活动性和趋光性得分均呈正相关。但是与寄生于嗜血杆菌的幼虫（感染性和非感染性）的两栖动物无关，这表明感染将这些变量之间的关系分开了。

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