A New Gonad-Infecting Species of Philometra (Nematoda: Philometridae) from the Atlantic Spanish Mackerel Scomberomorus maculatus (Scombridae) off the Atlantic Coast of Florida and South Carolina

0397188 - BC 2014 RIV US eng J - Journal Article
Moravec, František - Bakenhaster, M. - de Buron, I.
A New Gonad-Infecting Species of Philometra (Nematoda: Philometridae) from the Atlantic Spanish Mackerel Scomberomorus maculatus (Scombridae) off the Atlantic Coast of Florida and South Carolina.
Journal of Parasitology. Roč. 99, č. 2 (2013), s. 290-296. ISSN 0022-3395. E-ISSN 1937-2345
R&D Projects: GA ČR GBP505/12/G112
Institutional support: RVO:60077344
Keywords : Gulf of Mexico * Philometra * Parasitic nematode * USA
Subject RIV: EA - Cell Biology
Impact factor: 1.258, year: 2013

A new nematode species, Philometra atlantica n. sp. (Philometridae), is described from male and female specimens found in the ovary of the Atlantic Spanish mackerel, Scomberomorus maculatus (Mitchill) (Scombridae, Perciformes), off the Atlantic coast of Florida and South Carolina. Based on light and scanning electron microscopy examination, the new species differs from most other gonad-infecting Philometra spp. in the length of spicules (111-126 mu m), number and arrangement of genital papillae, and a U-shaped, dorsally interrupted caudal mound in the male. A unique feature among all gonad-infecting philometrids is the presence of 2 reflexed dorsal barbs on the distal end of the gubernaculum. From a few congeneric, gonad-infecting species with unknown males, it can be distinguished by some morphological and biometrical features found in gravid females (body length, length of first-stage larvae or esophagus, structure of caudal end) and by the host type (fish family) and geographical distribution. Philometra atlantica is the fourth valid gonad-infecting species of Philometra reported from fishes of the family Scombridae.
Permanent Link: http://hdl.handle.net/11104/0224851