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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 34, No. 1, 2013, pp. 21-26
Bioline Code: zr13004
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 34, No. 1, 2013, pp. 21-26

 en Host selection of ectoparasitic gamasid mites on Tylonycteris pachypus check for this species in other resources and T. robustula check for this species in other resources
ZHANG, Guang-Liang; TANG, Zhan-Hui; HONG, Ti-Yu; YANG, Jian; ZENG, Yu; TAN, Liang-Jing; LIU, Qi; CHEN, Yi; SHEN, Qi-Qi & ZHANG, Li-Biao

Abstract

Correlations of two species of gamasid mites ( Macronyssus pararadovskyi check for this species in other resources and M. radovskyi check for this species in other resources ) and their bat hosts ( Tylonycteris pachypus check for this species in other resources and T. robustula check for this species in other resources ) were studied by field surveys and indoor behavioral experiments. The wild data indicated that mite load was positively correlated with body condition index of female T. pachypus hosts (Spearman: rs=0.55, P<0.01, n=24). Whereas, mite loads had no correlation with body condition indexes of male T. pachypus and all T. robustula hosts (P>0.05). Indoor original host infection showed that mites preferred male T. pachypus and T. robustula hosts. The infection percentages on male hosts were significantly higher than those on female hosts [T. pachypus: male (58±12)%, female (42±12)%, (t=−3.6, df=31, P<0.01); T. robustula: male (63±11)%, female (37±11)%, (t=−6.1, df=26, P<0.001)]. Using M. pararadovskyi (original host T. pachypus) to across infect T. pachypus and T. robustula, we found that mites significantly preferred the original host (t=9.1, df=29, P<0.001). The infection percentages of T. pachypus, and T. robustula were (71±13)% and (29±13)%, respectively. Our results indicated that mite loads of the two bat species were not correlated with body condition indexes of hosts. However, these mites presented different host sexual preferences, and the mites of T. pachypus presented specific host species preferences.

Keywords
Tylonycteris pachypus; T. robustula; gamasid mite; Macronyssus radovskyi; M. pararadovskyi; host selection

 
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