Morphological and molecular characterization of two new species of the genus Aporcelinus Andrassy, 2009 (Nematoda, Dorylaimida, Aporcelaimidae) from the USA, with new insights on the phylogeny of the genus

被引:6
|
作者
Alvarez-Ortega, S. [1 ,2 ]
Subbotin, S. A. [2 ]
Pena-Santiago, R. [3 ]
机构
[1] Univ Rey Juan Carlos, Dept Biol & Geol Fis & Quim Inorgan, Campus Mostoles, Madrid 28933, Spain
[2] Calif Dept Food & Agr, Plant Pest Diagnost Ctr, 3294 Meadowview Rd, Sacramento, CA 95832 USA
[3] Univ Jaen, Dept Biol Anim Biol Vegetal & Ecol, Campus Las Lagunillas S-N,Edificio B3, Jaen 23071, Spain
关键词
Bayesian inference; description; D2-D3 expansion segments; LSU ribosomal RNA gene; maximum likelihood; molecular; morphology; morphometrics; SEM; taxonomy; HEYNS; VIETNAM; THORNE;
D O I
10.1017/S0022149X18001128
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
Two new species of the genus Aporcelinus from the USA are described and illustrated. Aporcelinus floridensis sp. n. is characterized by its 1.12-1.52mm long body, lip region offset by marked constriction and 14.5-17.0 mu m broad with perioral liplets, odontostyle 16.5-20.0 mu m at its ventral side and 1.1-1.2 times the lip region diameter, neck 316-395 mu m long, pharyngeal expansion occupying 43-48% of total neck length, uterus simple and 33-56 mu m long or 0.8-1.2 times the corresponding body diameter, V = 48-54, female tail conical (36-49 mu m long, c = 27-41, c' = 1.2-2.0) with finely rounded terminus and no hyaline portion, and male absent. Aporcelinus paolae sp. n. is characterized by its 1.29-1.80mm long body, lip region offset by marked constriction and 14-16 mu m broad, odontostyle 15-17 mu m at its ventral side and 1.0-1.1 times the lip region diameter, neck 314-397 mu m long, pharyngeal expansion occupying 43-53% of total neck length, uterus tripartite and 128-164 mu m long or 2.6-3.6 times the corresponding body diameter, V = 53-57, female tail conical (30-39 mu m long, c = 40-51, c' = 1.1-1.3) with finely rounded terminus and variably re-curved dorsad, male tail conical (27-36 mu m, c = 39-59, c' = 0.9-1.2), ventrally straight and dorsally convex, spicules 48-54 mu m long, and 7-9 irregularly spaced ventromedian supplements lacking hiatus. The analyses of the D2-D3 expansion segments of 28S rRNA (LSU) gene sequences of the two new species confirmed the monophyly of the genus, based upon currently available data, showing a close relationship between the genera Aporcelinus and Makatinus, and justified the placement of Aporcelaimellus, Makatinus and Aporcelinus under the subfamily Aporcelaimellinae.
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页数:10
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