Journal of Nematology (2005) 37, 94-104

From Pestinfo-Wiki
Jump to: navigation, search

Z.A. Handoo, L.K. Carta, A.M. Skantar, W. Ye, R.T. Robbins, S.A. Subbotin, S.W. Fraedrich and M.M. Cram (2005)
Morphological and molecular characterization of Longidorus americanum n. sp. (Nematoda: Longidoridae), a needle nematode parasitizing pine in Georgia
Journal of Nematology 37 (1), 94-104
Abstract: We describe and illustrate a new needle nematode, Longidorus americanum n.sp., associated with patches of severely stunted and chlorotic loblolly pine, (Pines taeda L.) seedlings in seedbeds at the Flint River Nursery (Byromville, GA). It is characterized by having females with a body length of 5.4-9.0 mm; lip region slightly swollen, anteriorly flattened, giving the anterior end a truncate appearance; long odontostyle (124-165 µm); vulva at 44%-52% of body length; and tail conoid, bluntly rounded to almost hemispherical. Males are rare but present, and in general shorter than females. The new species is morphologically similar to L. biformis, L. paravineacola, L. saginus, and L. tarjani but differs from these species either by the body, odontostyle and total stylet length, or by head and tail shape. Sequence data from the D2-D3 region of the 28S rDNA distinguishes this new species from other Longidorus species. Phylogenetic relationships of Longidorus americanum n. sp. with other longidorids based on analysis of this DNA fragment are presented. Additional information regarding the distribution of this species within the region is required.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Zafar A. Handoo, Lynn K. Carta, Stephen W. Fraedrich, Andrea M. Skantar, Robert T. Robbins

Research topic(s) for pests/diseases/weeds:
identification/taxonomy


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Longidorus americanum Pine (Pinus) U.S.A. (SE)