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Apratylenchus vietnamensis gen. n., sp. n. and A. binhi gen. n., sp. n., sedentary Pratylenchidae (Nematoda: Tylenchida) from coffee in Vietnam, with proposal of Apratylenchinae subfam. n.

Phap Q Trinh, Lieven Waeyenberge, Cahu N Nguyen, James G Baldwin, Gerrit Karssen UGent and Maurice Moens UGent (2009) NEMATOLOGY. 11(4). p.565-581
abstract
Apratylenchinae subfam. n. is proposed within the Pratylenchidae to include Apratylenchus gen. n. and two new species, A. vietnamensis gen. n., sp. n. and A. binhi gen. n., sp. n., from coffee plantations in Vietnam. Apratylenchus gen. n. is distinguished by the presence of transverse rows of cuticular tubercles on the annuli and by sexual dimorphism in which the males are stout and cylindrical, but mature sedentary females are club-shaped. The sedentary females are broadest in the posterior third although narrowing posterior to the vulva (V >= 85%). The female cephalic region is low and dome-shaped with all labial sectors fused to one another and the oral disc and the pharyngeal glands overlap the intestine ventrally. Males have a weak stylet with reduced knobs and a conical tail with a blunt terminus, arcuate spicules and a non-protrusible gubernaculum. Apratylenchus vietnamensis gen. n., sp. n. is characterised by a sedentary mature female with a 368-515 mu m long club-shaped body, cephalic region low, dome shaped with three annuli, body annuli bearing a single or double row of refractive tubercles, stylet 17.0-19.9 mu m long, V = ca 88-92, spermatheca filled with sperm and males known, if rarely found, in the type population. Males have a weak, 15 mu m long stylet with reduced knobs, 16 mu m spicules, a non-protrusible gubernaculum and low bursa. It differs from A. binhi gen. n., sp. n., the only other nominal species of the new genus, by longer female body (368-515 vs 326-364 mu m), longer distance from anterior end to anus (353-512 vs 310-348 mu m) and longer stylet (17.0-19.9 vs 14.7-16.9 mu m). In addition, the spermatheca is filled with round sperm vs empty in A. binhi gen. n., sp. n. and the cuticle has less densely spaced and less pronounced tubercles. D2/D3 sequences of the 28 rDNA gene clearly support the separation of Apratylenchus gen. n. from other Pratylenchidae and further distinguish the two new species from each other.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
PHYLOGENETIC ANALYSIS, TYLENCHOIDEA, SEM, phylogeny, morphometrics, morphology, molecular, D2/D3, taxonomy, description, RDNA
journal title
NEMATOLOGY
Nematology
volume
11
issue
4
pages
565 - 581
Web of Science type
Article
Web of Science id
000269456900007
JCR category
ZOOLOGY
JCR impact factor
0.937 (2009)
JCR rank
75/126 (2009)
JCR quartile
3 (2009)
ISSN
1388-5545
DOI
10.1163/138855409X12465362560593
language
English
UGent publication?
yes
classification
A1
id
669690
handle
http://hdl.handle.net/1854/LU-669690
date created
2009-05-28 07:57:19
date last changed
2012-10-30 17:00:44
@article{669690,
  abstract     = {Apratylenchinae subfam. n. is proposed within the Pratylenchidae to include Apratylenchus gen. n. and two new species, A. vietnamensis gen. n., sp. n. and A. binhi gen. n., sp. n., from coffee plantations in Vietnam. Apratylenchus gen. n. is distinguished by the presence of transverse rows of cuticular tubercles on the annuli and by sexual dimorphism in which the males are stout and cylindrical, but mature sedentary females are club-shaped. The sedentary females are broadest in the posterior third although narrowing posterior to the vulva (V {\textrangle}= 85\%). The female cephalic region is low and dome-shaped with all labial sectors fused to one another and the oral disc and the pharyngeal glands overlap the intestine ventrally. Males have a weak stylet with reduced knobs and a conical tail with a blunt terminus, arcuate spicules and a non-protrusible gubernaculum. Apratylenchus vietnamensis gen. n., sp. n. is characterised by a sedentary mature female with a 368-515 mu m long club-shaped body, cephalic region low, dome shaped with three annuli, body annuli bearing a single or double row of refractive tubercles, stylet 17.0-19.9 mu m long, V = ca 88-92, spermatheca filled with sperm and males known, if rarely found, in the type population. Males have a weak, 15 mu m long stylet with reduced knobs, 16 mu m spicules, a non-protrusible gubernaculum and low bursa. It differs from A. binhi gen. n., sp. n., the only other nominal species of the new genus, by longer female body (368-515 vs 326-364 mu m), longer distance from anterior end to anus (353-512 vs 310-348 mu m) and longer stylet (17.0-19.9 vs 14.7-16.9 mu m). In addition, the spermatheca is filled with round sperm vs empty in A. binhi gen. n., sp. n. and the cuticle has less densely spaced and less pronounced tubercles. D2/D3 sequences of the 28 rDNA gene clearly support the separation of Apratylenchus gen. n. from other Pratylenchidae and further distinguish the two new species from each other.},
  author       = {Trinh, Phap Q and Waeyenberge, Lieven and Nguyen, Cahu N and Baldwin, James G and Karssen, Gerrit and Moens, Maurice},
  issn         = {1388-5545},
  journal      = {NEMATOLOGY},
  keyword      = {PHYLOGENETIC ANALYSIS,TYLENCHOIDEA,SEM,phylogeny,morphometrics,morphology,molecular,D2/D3,taxonomy,description,RDNA},
  language     = {eng},
  number       = {4},
  pages        = {565--581},
  title        = {Apratylenchus vietnamensis gen. n., sp. n. and A. binhi gen. n., sp. n., sedentary Pratylenchidae (Nematoda: Tylenchida) from coffee in Vietnam, with proposal of Apratylenchinae subfam. n.},
  url          = {http://dx.doi.org/10.1163/138855409X12465362560593},
  volume       = {11},
  year         = {2009},
}

Chicago
Trinh, Phap Q, Lieven Waeyenberge, Cahu N Nguyen, James G Baldwin, Gerrit Karssen, and Maurice Moens. 2009. “Apratylenchus Vietnamensis Gen. N., Sp. N. and A. Binhi Gen. N., Sp. N., Sedentary Pratylenchidae (Nematoda: Tylenchida) from Coffee in Vietnam, with Proposal of Apratylenchinae Subfam. N.” Nematology 11 (4): 565–581.
APA
Trinh, P. Q., Waeyenberge, L., Nguyen, C. N., Baldwin, J. G., Karssen, G., & Moens, M. (2009). Apratylenchus vietnamensis gen. n., sp. n. and A. binhi gen. n., sp. n., sedentary Pratylenchidae (Nematoda: Tylenchida) from coffee in Vietnam, with proposal of Apratylenchinae subfam. n. NEMATOLOGY, 11(4), 565–581.
Vancouver
1.
Trinh PQ, Waeyenberge L, Nguyen CN, Baldwin JG, Karssen G, Moens M. Apratylenchus vietnamensis gen. n., sp. n. and A. binhi gen. n., sp. n., sedentary Pratylenchidae (Nematoda: Tylenchida) from coffee in Vietnam, with proposal of Apratylenchinae subfam. n. NEMATOLOGY. 2009;11(4):565–81.
MLA
Trinh, Phap Q, Lieven Waeyenberge, Cahu N Nguyen, et al. “Apratylenchus Vietnamensis Gen. N., Sp. N. and A. Binhi Gen. N., Sp. N., Sedentary Pratylenchidae (Nematoda: Tylenchida) from Coffee in Vietnam, with Proposal of Apratylenchinae Subfam. N.” NEMATOLOGY 11.4 (2009): 565–581. Print.