کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8962669 | 1646592 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two new species of the genus Metaxonchium Coomans & Nair 1975 (Nematoda, Dorylaimida, Belondiridae) from Costa Rica, with new insights in the phylogeny of the family Belondiridae
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two new species of the genus Metaxonchium are described from natural habitats in Costa Rica. Metaxonchium parvisaccatum sp. n. is characterized by its 1.62-1.71â¯mm long body, lip region offset by constriction and 8.5-10â¯Î¼m broad, odontostyle 10-11â¯Î¼m long, neck 632-674â¯Î¼m long, pharyngeal expansion occupying 68-71% of neck length, anterior genital branch reduced to a short uterine sac, 22-27â¯Î¼m long or 1-2% of body length, posterior uterus long and tripartite without apophyses, vulva transverse (Vâ¯=â¯54-55), caudal region short and rounded (23-26â¯Î¼m, câ¯=â¯62-76, c'â¯=â¯0.7-0.8), and male absent. Metaxonchium stenospiculum sp. n. is characterized by its 2.15-2.85â¯mm long body, lip region offset by constriction and 12.5-16â¯Î¼m broad, odontostyle 13.5-16â¯Î¼m long, neck 756-1011â¯Î¼m long, pharyngeal expansion occupying 64-74% of neck length, anterior genital branch 8-13% of body length and consisting of a long uterine sac plus a terminal mass, posterior uterus long and tripartite without apophyses, vulva transverse (Vâ¯=â¯53-59), caudal region short and rounded, nearly hemispheroid (20-28â¯Î¼m, câ¯=â¯91-126, c'â¯=â¯0.4-0.6) in females, and more conoid (29-41â¯Î¼m, câ¯=â¯80-88, c'â¯=â¯0.6-0.8) in males, spicules 96-102â¯Î¼m long, and 11-14 spaced ventromedian supplements without hiatus. Molecular analysis of M. stenospiculum sp. n. D2-D3 LSU provides new insights in the phylogeny of Belondiridae as its rounded-tailed genera might constitute a monophyletic group.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Zoologischer Anzeiger - Volume 277, November 2018, Pages 1-11
Journal: Zoologischer Anzeiger - Volume 277, November 2018, Pages 1-11
نویسندگان
I. Varela-Benavides, R. Peña-Santiago,