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首页> 外文期刊>Polar biology >Tick infestations correlates at a Falkland Islands Black-browed Albatross colony
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Tick infestations correlates at a Falkland Islands Black-browed Albatross colony

机译：ick虫感染与福克兰群岛的黑眉信天翁殖民地有关

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摘要

The tick Ixodes uriae is an ectoparasite widely distributed among seabirds throughout circumpolar regions, usually associated with seabird colonies. Nevertheless, potential effects of infestations, especially in chicks, are not well documented. In this article, we studied factors associated with probability and intensity of infestations in Black-browed Albatross Thalassarche melanophrys nestlings in a colony at the Falklands Islands. We compared the body measurements, physiological parameters, distance to other nests and position inside the colony between infested and non-infested 40 Black-browed Albatross nestlings. Ticks were present in 60% of the nestlings with a mean number per nestlings of 1.47. None of the 12 analysed blood parameters but LDH (Lactate dehydrogenase) showed significant differences between infested and not infested nestlings. Nestlings infected showed significant higher level of LDH than those without ticks. The number of ticks found on each nestling was positively and significantly correlated with their LDH blood levels. Tarsus length (as a proxy of age) and distance to the nearest nest showed a significant effect, with younger nestlings with closer nests showing higher probability to be infected. These variables also affect intensity of infestation. No effects of nutritional condition (butyrate or urea levels) or body condition (residuals of cubic root of mass/tarsus length regression) on probability or intensity of infestation were found. Both small anaemias and tick scars would explain the different values of LDH between infectedon-infected chicks. The low level of infestation found in our colony could be the cause of a non-detectable effect of the presence of ticks on nestling body condition and other blood parameters related to metabolism of fat or protein.
机译：壁虱（Ixodes uriae）是一种外寄生虫，广泛分布于整个极地地区的海鸟中，通常与海鸟的殖民地有关。然而，没有充分记录出侵染的潜在影响，特别是在雏鸡中。在本文中，我们研究了福克兰群岛殖民地黑眉信天翁Thalassarche黑色系雏鸟侵染的概率和强度相关的因素。我们比较了受感染和未受感染的40只黑眉信天翁幼鸟的身体测量值，生理参数，与其他巢的距离以及菌落内部的位置。 60虫出现在60％的雏鸟中，每只雏鸟的平均数为1.47。 12种分析的血液参数中没有一个，但是LDH（乳酸脱氢酶）在受感染和未受感染的雏鸟之间显示出显着差异。被感染的雏鸟的LDH水平明显高于没有without虫的雏鸡。在每个雏鸟上发现的tick的数量与它们的LDH血液水平呈正相关且显着相关。 sus体的长度（作为年龄的代用指标）和到最近巢的距离显示出显着的影响，年轻的雏鸟和更近的巢表明被感染的可能性更高。这些变量也影响侵染的强度。没有发现营养状况（丁酸盐或尿素水平）或身体状况（质量/ tar架长度回归的立方根的残差）对侵扰的可能性或强度的影响。小贫血和壁虱疤痕都可以解释感染/未感染小鸡之间LDH的不同值。在我们的殖民地中发现的低度侵扰可能是由于s虫对雏鸟的身体状况以及其他与脂肪或蛋白质代谢有关的血液参数的影响而无法检测到的原因。

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