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Survey on the seasonal changes of mermithid nematode parasites in blackflies (Diptera: Simuliidae) in Qingyan, Guizhou province

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  • Basic Medical College, Guizhou Medcial University, Guiyang 550004, Guizhou Province, China

Received date: 2015-11-10

  Online published: 2016-04-20

Supported by

Supported by the Social Development Project of Guizhou Province Science and Technology Department (No. SY[2012] 3083) and the Joint Fund Project of Guizhou Province Science and Technology Department and Guiyang Medical University (No. LG[2012]022)

Abstract

Objective To determine the situation of Simuliids infected with mermithid nematode parasites and its infection rate of seasonal dynamic changes in Qingyan, Guizhou province. Methods From March 2013 to February 2014, larval blackflies were collected in Qingyan stream each month. The infection rates of mermithid nematodes were investigated and the seasonal changes were analyzed. Results There are Simulium (Wilhelmia) xingyiense Chen and Zhang, 1998 and Simulium (Simulium) wuzhishanense Chen, 2003 in Qingyan stream. Except 2013 October, the number of S. (S.) xingyiense larvae was collected more than S. (S.) wuzhishanense every month. Two kinds of Simuliids were the hosts of the mermithid. The green mermithid nematode infected S. (S.) xingyiense. But the white mermithid nematode infected S. (S.) wuzhishanense. The mermith infected 4.70% of 12 649 larvae of S. (S.) xingyiense, ranging from 1.26% to 21.57%. The mermith infected 20.84% of 3 694 larvae of S. (S.) wuzhishanense, ranging from 1.33% to 43.05%. The peak incidences in S. (S.) xingyiense occurred during the autumn. The peak incidences in S. (S.) xingyiense occurred during the winter. The parasitic rate of S. (S.) wuzhishanense is higher than S. (S.) xingyiense. Conclusion The infection rate of mermithid nematodes in simuliids changed with seasonal variations.

Cite this article

XUN Hui, LIU Zhan-yu, JIA Ruo, YANG Yao-ming, PAN Wei, YANG Ming . Survey on the seasonal changes of mermithid nematode parasites in blackflies (Diptera: Simuliidae) in Qingyan, Guizhou province[J]. Chinese Journal of Vector Biology and Control, 2016 , 27(2) : 160 -163 . DOI: 10.11853/j.issn.1003.8280.2016.02.017

References

[1] Kim SK, Adler PH. Multiple symbiotes in larval black flies (Diptera:Simuliidae):associations of trichomycete fungi with ichthyosporeans, mermithid nematodes, and microsporidia[J]. J Invertebr Pathol,2005,88(3):247-253.
[2] Sharp AL, Hunter FF. Chiasmate meiosis in male black fly (Diptera:Simuliidae) larvae associated with mermithid infections(Nematoda:Mermithidae)[J]. Can J Zool,2008,86(10):1198-1202.
[3] Poinar Jr GO. Entomogenous nematodes:a manual and host list of insect-nematode associations[M]. Leiden:EJ Brill,1975:1-5,317.
[4] Gordon R. Mermithid nematodes:physiological relationships with their insect hosts[J]. J Nematol,1981,13(3):266-274.
[5] Welch HE. Mermithid parasites of Blackflies[J]. Bull World Health Organ,1964,31:857-863.
[6] Molloy DP. Mermithid parasitism of black flies(Diptera:Simuliidae)[J]. J Nematol,1981,13(3):250-256.
[7] Colbo MH. Persistence of mermithidae (Nematoda) infections on black fly(Diptera:Simuliidae)populations[J]. J Am Mosq Control Assoc,1990,6(2):203-206.
[8] Jitklang S, Ahantarig A, Kuvangkadilok C, et al. Parasites of larval black flies (Diptera:Simuliidae) in Thailand[J]. Songklanakarin J Sci Technol,2012,34(6):597-599.
[9] Gradinarov D. The mermithid species Isomermis lairdi(Nematoda:Mermithidae),previously only known in Africa, found in Europe[J]. Zookeys,2014(454):1-11.
[10] 王国秀,阎愫. 我国昆虫寄生索科线虫研究进展[J]. 植保技术与推广,2001,21(7):38-41.
[11] 鲁布佐夫著,潘沧桑,译. 索科线虫:分类、作用、应用[M]. 北京:科学出版社,1991:152.
[12] 陈汉彬,张春林. 贵州蚋属两新种记述(双翅目:蚋科)[J]. 动物分类学报,1998,23(1):57-61.
[13] 寻慧,丁凯泽,杨明,等. 兴义维蚋中枢神经系统的组织学观察[J]. 中国寄生虫学与寄生虫病杂志,2013,31(6):443-447.
[14] 陈汉彬. 中国蚋属蚋亚属盾纹组分类记要并三新种记述(双翅目:蚋科)[J]. 动物分类学报,2003,28(2):336-342.
[15] Rubtsov IA. Mermithids as biological control agents of blackflies[J]. Parazitologiia,1978,12(6):505-511.
[16] St-Onge M, Charpentier G. Mermithids (Nematoda:Mermithidae) parasitizing different blackfly (Diptera:simuliidae) populations in Quebec:environmental parameters related to their presence or absence in the studied brooks[J]. J Am Mosq Control Assoc, 2008,24(3):438-443.
[17] McCreadie JW, Adler PH. Parasites of larval black flies (Diptera:simuliidae) and environmental factors associated with their distributions[J]. Invertebr Biol,1999,118(3):310-318.
[18] McCreadie JW, Adler PH, Beard CE. Ecology of symbiotes of larval black flies (Diptera:Simuliidae):distribution, diversity, and scale[J]. Environ Entomol,2011,40(2):289-302.

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