Structure of the female reproductive system of Xiphinema americanum (Nematoda : Longidoridae)
Coomans, A.; Claeys, M. (1998). Structure of the female reproductive system of Xiphinema americanum (Nematoda : Longidoridae). Fund. Appl. Nematol. 21(5): 569-580
In: Fundamental and Applied Nematology. Gauthiers-Villars/Office de la recherche scientifique et technique d'Outre-mer: Montrouge. ISSN 1164-5571, more
The female reproductive system of Xiphinema americanum differs from that of other Xiphinema species in several respects. The ovary has branched oocytes surrounded by epithelial wall cells in which symbiotic bacteria are embedded. The oviduct has a long pars dilatata which is not clearly separated from the slender part; its wall is extensively folded and extendible. The sphincter between oviduct and uterus has a sinuous lumen and 'internal musculature'. The uterus is extremely short and has a folded wall; the two uteri constitute together an extendible ovejector. Shortening of the uterus is considered to be an evolutionary trend in the X. americanum-group.
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