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Steinernema aciari sp. n. (Nematoda: Steinernematidae), a new entomopathogenic nematode from Guangdong, China
A new species of entomopathogenic nematode, Steinernema aciari sp. n. was described. It was recovered from a soil sample collected from Haimen town, Shantou district in the eastern coast of Guangdong province, the People’s Republic of China during a survey for entomopathogenic nematodes. S. aciari s...
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Published in: | Journal of invertebrate pathology 2005, Vol.88 (1), p.58-69 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A new species of entomopathogenic nematode,
Steinernema aciari sp. n. was described. It was recovered from a soil sample collected from Haimen town, Shantou district in the eastern coast of Guangdong province, the People’s Republic of China during a survey for entomopathogenic nematodes.
S. aciari sp. n. belongs to the
Steinernema glaseri group. It can be separated from all described
Steinernema species by the combined morphological and morphometrical characters of various stages of the nematodes. For male, the new species can be recognized by spicule length (86
±
6.3
μm); spicule tip blunt with a hook-like structure; gubernaculum with a short and Y-shaped cuneus and corpus well-separated posteriorly. For infective juvenile, the combination of the following characters: body length (1113
±
68
μm), distance from anterior end to excretory pore (95
±
3.7
μm), tail length (78
±
5.2
μm), and E % (123
±
7) can be used to differentiate the new species from other nematodes. For female, the tail (conoid with a long mamillate terminus and a distinct postanal swelling) and vulva (slightly protruding from body surface with conspicuous double flapped epiptygma) shapes can be used as diagnostic characters for the new species. The new species can also be distinguished from other
Steinernema species by DNA sequences of either a partial 28S rDNA or the internal transcribed spacer regions of rDNA, and from the close related species
S. glaseri,
Steinernema longicaudum CWL05, and
Steinernema guangdongense by cross-breeding test. |
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ISSN: | 0022-2011 1096-0805 |
DOI: | 10.1016/j.jip.2004.09.004 |