Unveiling novel and known Cryptaphelenchus species from China and USA

被引:2
|
作者
Gu, Jianfeng [1 ]
Castillo, Pablo [2 ]
Ma, Xinxin [1 ]
Munawar, Maria [3 ]
机构
[1] Ningbo Inspect & Quarantine Sci Technol Acad, Ningbo Customs Technol Ctr, Ningbo Key Lab Port Biol & Food Safety Testing, 8 Huikang, Ningbo 315100, Zhejiang, Peoples R China
[2] Campus Excelencia Int Agrolimentario CeiA3, Spanish Natl Res Council CSIC, Inst Sustainable Agr IAS, Ave Menendez Pidal S-N, Cordoba 14004, Spain
[3] Univ Lethbridge, Dept Biol Sci, 4401 Univ Dr W, Lethbridge, AB T1K 3M4, Canada
关键词
insect associations; molecular characterisation; mycetophagy; nematode biodiversity; phylogenetic trees; wood-inhabiting nematodes; MORPHOLOGICAL CHARACTERIZATION; NEMATODA EKTAPHELENCHINAE; POLYMORPHISM;
D O I
10.1163/15685411-bja10335
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Cryptaphelenchus species are wood- or bark-inhabiting nematodes, generally mycetophagous and reported to have endophoretic associations with insects. In the present study, we describe two new and one known Cryptaphelenchus species detected in imported and domestic wood samples. Cryptaphelenchus americanum n. sp. and C. minutus were detected in the log samples of Pinus taeda imported from the USA, whereas C. orientalis n. sp. was isolated from the bark of dying Pinus sylvestris trees in Inner Mongolia, China. Both new species displayed characteristic features, including a relatively short body length, four lateral lines, a short post-vulval uterine sac in females, and a distinct cloacal apophysis in male tails. Newly recovered and known species were characterised molecularly, and phylogenetic trees were constructed to study their relationship with related Cryptaphelenchus species. Notably, the genetic divergence observed among Cryptaphelenchus species was found to be more significant compared to morphometrical differences, highlighting the importance of molecular data in taxonomy. The identification of new and known species expands our understanding of the genus and suggests that Cryptaphelenchus species may be under studied, underscoring the necessity for continued exploration.
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页数:22
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