Abstract:
Variations in hematological profile in reptiles can be caused by multiple factors, including parasites presence. Our goals were to identify and morphologically describe blood cells of Liolaemus pacha and analyze their relationship with sex, body condition, individual reproductive/post-reproductive period and mite infestation. Blood smear analyses do not indicate the presence of hemoparasites, suggesting that the mites Neopterygosoma do not serve as vectors for these organisms, as has been proposed for other genera of ectoparasitic mites. In post-reproductive period, there was a reduction in specimens\' body condition and a higher leukocyte count in uninfected lizards. This could be a consequence of the testosterone effects, in higher concentration during the reproductive season, which can increase the metabolic rate, decreasing feeding rate. Infested and non-infested lizards showed no differences in body condition, as well as in leukocyte count, hence the host\'s immune system could be developing infestation tolerance. Infested specimens had a higher count of monocytes, thrombocytes, heterophils and lymphocytes. Based on cells function, mites\' effect could be associated with inflammatory processes, allergic reactions or infectious diseases. These results suggested a complex interaction between lizards\' hematological parameters and factors associated to ectoparasites or body conditions. We consider this work as a diagnostic tool for genus Liolaemus, to evaluate health quality, with relevance to the conservation or management of this lizard\'s genus.
摘要:
爬行动物的血液学特征变化可能是由多种因素引起的,包括寄生虫的存在。我们的目标是识别和形态学描述Liolaemuspacha的血细胞,并分析它们与性别的关系,身体状况,个体生殖/生殖后时期和螨侵扰。血液涂片分析不表明血液寄生虫的存在,这表明螨虫新翅目并不能作为这些生物的载体,正如已经提出的其他属的外寄生螨。在后生育期,在未感染的蜥蜴中,标本的身体状况减少,白细胞计数增加。这可能是睾酮效应的结果,在生殖季节浓度较高,可以增加代谢率,降低喂食率。受感染和未受感染的蜥蜴在身体状况上没有差异,以及白细胞计数,因此,宿主的免疫系统可能正在发展对侵染的耐受性。受感染的标本单核细胞计数较高,血小板,异嗜性粒细胞和淋巴细胞。基于细胞功能,螨虫的作用可能与炎症过程有关,过敏反应或传染病。这些结果表明蜥蜴血液学参数和与体外寄生虫或身体状况相关的因素之间存在复杂的相互作用。我们认为这项工作是Liolaemus属的诊断工具,为了评估健康质量,与这种蜥蜴属的保护或管理有关。