Molecular phylogenetic studies on ascarid nematodes from Ailuropoda melanoleuca and seven other species of captive wild mammals based on ND1 genes

• 1、Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Ya\'an 625014
• 2、Chengdu Zoological Garden, Chengdu 610041, China.
• 3、Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China.
• 4、Sichuan Entry-Exit Inspection and Quarantine Bureau, Chengdu 610041, China.
• 5、The Sichuan Key Laboratory for Conservation Biology on Endangered Wildlife-Developing toward a State Key Laboratory for China, Chengdu Research Base of Giant Panda Breeding, Chengdu 610041, China
• 6、Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an 625014, China

Abstract：In this paper, the mitochondrial gene NADH dehydrogenase subunit 1 (ND1) were used to determine the taxonomic status of ascarids from eight species of captive wild mammals (Ailuropoda melanoleuca, Ailurus fulgens,Ursus maritimus, Ursus arctos pruinosus, Ursus thibetanus mupinensis,Ursus arctos lasiotus,Pan troglodytes and Hylobates hoolock). Phylogenetic relationships were inferred by three methods (NJ/MP/ML) based on ND1 sequences. The alternative trees revealed that these roundworms were gathered together, suggested the ascarid nematodes from A. melanoleuca, A. fulgens and four species of bears belong to Baylisascaris,while worms from Pan troglodytes and Hylobates hoolock belong to Ascaris. The results supported the view that the roundworm from giant panda (Ailuropoda melanoleuca) was named as Baylisascaris schroederi, and proposed that roundworm from red panda (Ailurus fulgens) should be designated to Baylisascaris ailuri.

keywords： Giant panda Red panda wild mammal ascarid nematodes ND1 molecular phylogeny

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