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Guitartia tridentata n. gen., n. sp (monhysterida: xyalidae) and macrodontium gaspari n. gen., n. sp (chromadorida: microlaimidae), free-living marine nematodes from the Caribbean sea

Maickel Armenteros Almanza UGent, Magda Vincx UGent and Wilfrida Decraemer UGent (2010) NEMATOLOGY. 12(3). p.417-427
abstract
Two new genera of free-living marine nematodes are described from the muddy bottom of Cienfuegos Bay, Caribbean Sea. Guitartia n. gen. (Xyalidae, Monhysterida) is characterised by three long tooth-like structures in the stegostom, second and third circle of anterior sensilla separate and posterior genital branch of the female restricted to a long post-vulvar sac. The type species is Guitartia tridentata n. gen., n. sp. Within the Xyalidae, Guitartia n. gen. is morphologically close to Amphimonhystrella, Cobbia, Elzalia, Scaptrella and Valvaelaimus, all being characterised by sclerotised structures in the stoma and transverse striation of the body cuticle. Main features for discrimination are the type of stoma structure, the shape and relative size of amphidial fovea, the presence of a post-vulvar sac and gubernacular apophyses and the absence of terminal setae on the tail. Macrodontium n. gen. (Microlaimidae, Chromadorida) is characterised by a heavily sclerotised stoma with one large dorsal tooth and two smaller subventral teeth, sexual dimorphism in size and position of the amphidial fovea and males with a single anterior testis. The type species is Macrodontium gaspari n. gen., n. sp. Within the Microlaimidae, Macrodontium n. gen. is similar to the genera Acanthomicrolaimus and Bolbolaimus due to sclerotised stoma and presence of large dorsal tooth. The new genus is similar to Aponema in sexual dimorphism in the size of the amphidial fovea, monorchic males, presence of a gubernacular apophysis and conico-cylindrical tail shape. Morphological characters of diagnostic value within the family are the ornamentation of the body cuticle, relative length of cephalic sensilla, stoma sclerotisation and number of testes.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
morphology, description, morphometrics, new genus, new species, taxonomy, GENERA, SAND, NOV
journal title
NEMATOLOGY
Nematology
volume
12
issue
3
pages
417 - 427
Web of Science type
Article
Web of Science id
000280001600010
JCR category
ZOOLOGY
JCR impact factor
0.962 (2010)
JCR rank
74/145 (2010)
JCR quartile
3 (2010)
ISSN
1388-5545
DOI
10.1163/138855409X12559479585007
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1148295
handle
http://hdl.handle.net/1854/LU-1148295
date created
2011-02-13 13:38:10
date last changed
2011-02-22 10:01:14
@article{1148295,
  abstract     = {Two new genera of free-living marine nematodes are described from the muddy bottom of Cienfuegos Bay, Caribbean Sea. Guitartia n. gen. (Xyalidae, Monhysterida) is characterised by three long tooth-like structures in the stegostom, second and third circle of anterior sensilla separate and posterior genital branch of the female restricted to a long post-vulvar sac. The type species is Guitartia tridentata n. gen., n. sp. Within the Xyalidae, Guitartia n. gen. is morphologically close to Amphimonhystrella, Cobbia, Elzalia, Scaptrella and Valvaelaimus, all being characterised by sclerotised structures in the stoma and transverse striation of the body cuticle. Main features for discrimination are the type of stoma structure, the shape and relative size of amphidial fovea, the presence of a post-vulvar sac and gubernacular apophyses and the absence of terminal setae on the tail. Macrodontium n. gen. (Microlaimidae, Chromadorida) is characterised by a heavily sclerotised stoma with one large dorsal tooth and two smaller subventral teeth, sexual dimorphism in size and position of the amphidial fovea and males with a single anterior testis. The type species is Macrodontium gaspari n. gen., n. sp. Within the Microlaimidae, Macrodontium n. gen. is similar to the genera Acanthomicrolaimus and Bolbolaimus due to sclerotised stoma and presence of large dorsal tooth. The new genus is similar to Aponema in sexual dimorphism in the size of the amphidial fovea, monorchic males, presence of a gubernacular apophysis and conico-cylindrical tail shape. Morphological characters of diagnostic value within the family are the ornamentation of the body cuticle, relative length of cephalic sensilla, stoma sclerotisation and number of testes.},
  author       = {Armenteros Almanza, Maickel and Vincx, Magda and Decraemer, Wilfrida},
  issn         = {1388-5545},
  journal      = {NEMATOLOGY},
  keyword      = {morphology,description,morphometrics,new genus,new species,taxonomy,GENERA,SAND,NOV},
  language     = {eng},
  number       = {3},
  pages        = {417--427},
  title        = {Guitartia tridentata n. gen., n. sp (monhysterida: xyalidae) and macrodontium gaspari n. gen., n. sp (chromadorida: microlaimidae), free-living marine nematodes from the Caribbean sea},
  url          = {http://dx.doi.org/10.1163/138855409X12559479585007},
  volume       = {12},
  year         = {2010},
}

Chicago
Armenteros Almanza, Maickel, Magda Vincx, and Wilfrida Decraemer. 2010. “Guitartia Tridentata N. Gen., N. Sp (monhysterida: Xyalidae) and Macrodontium Gaspari N. Gen., N. Sp (chromadorida: Microlaimidae), Free-living Marine Nematodes from the Caribbean Sea.” Nematology 12 (3): 417–427.
APA
Armenteros Almanza, M., Vincx, M., & Decraemer, W. (2010). Guitartia tridentata n. gen., n. sp (monhysterida: xyalidae) and macrodontium gaspari n. gen., n. sp (chromadorida: microlaimidae), free-living marine nematodes from the Caribbean sea. NEMATOLOGY, 12(3), 417–427.
Vancouver
1.
Armenteros Almanza M, Vincx M, Decraemer W. Guitartia tridentata n. gen., n. sp (monhysterida: xyalidae) and macrodontium gaspari n. gen., n. sp (chromadorida: microlaimidae), free-living marine nematodes from the Caribbean sea. NEMATOLOGY. 2010;12(3):417–27.
MLA
Armenteros Almanza, Maickel, Magda Vincx, and Wilfrida Decraemer. “Guitartia Tridentata N. Gen., N. Sp (monhysterida: Xyalidae) and Macrodontium Gaspari N. Gen., N. Sp (chromadorida: Microlaimidae), Free-living Marine Nematodes from the Caribbean Sea.” NEMATOLOGY 12.3 (2010): 417–427. Print.