@article {201, title = {The cellular structure of the female reproductive system within the Heteroderinae and Meloidogyninae (Nematoda)}, journal = {NematologyNematology}, volume = {4}, year = {2002}, note = {Times Cited: 4 Article English Bert, W State Univ Ghent, Dept Biol, Ledeganckstr 35, B-9000 Ghent, Belgium Cited References Count: 40 651JE BRILL ACADEMIC PUBLISHERS PLANTIJNSTRAAT 2, P O BOX 9000, 2300 PA LEIDEN, NETHERLANDS LEIDEN Part 8}, pages = {953-963}, abstract = {Gonads from living young females, representing 23 different species, were extracted to study the cellular structure of the female genital structure within the Meloidogyninae and Heteroderinae. All genera studied can be characterised by their cellular spermatheca morphology. Within Meloidogyne a spherical spermatheca is found with lobe-like protruding cells, most species having 16 to 18 spermatheca cells with interlaced cell boundaries while M. microtyla and M. ichinohei have more spermatheca cells with different cell boundaries. Heterodera and Globodera reveal a comparable gonad structure. The spermatheca cells of Heterodera are columnar and arranged in a restricted number of rows, whereas in Globodera the spermatheca cells are squarish to rounded, depending on the species. The gonad morphology of Afenestrata koreana is clearly different from what would be expected based on the related genera Globodera and Heterodera. The apparently simplest genital system was found in Meloidodera floridensis where the uterus has a limited number of cells. In the other genera studied a large and variable cell-number was found}, keywords = {Afenestrata, CELLS, CLASSIFICATION, CYST, DNA, Evolution, female genital system, GENITAL SYSTEM, Globodera, GLOBODERA-ROSTOCHIENSIS, gonad, HETERODERA, HETERODERINAE, Meloidodera, MELOIDOGYNE, morphology, Nematoda, REPRODUCTIVE-SYSTEM, SEM, SPERMATHECA, TYLENCHIDA, variable cell number}, isbn = {1388-5545}, author = {Bert, W. and Karssen, G. and Van Driessche, R. and Geraert, E.} } @article {171, title = {Cuticular structure of three Bunonema species and first description of the male of B. penardi Stefanski, 1914 (Nematoda : Bunonematidae)}, journal = {NematologyNematology}, volume = {6}, year = {2004}, note = {Times Cited: 0 Article English Borgonie, G State Univ Ghent, Dept Biol, Nematol Sect, KL Ledeganckstr 35, B-9000 Ghent, Belgium Cited References Count: 38 889AI BRILL ACADEMIC PUBLISHERS PLANTIJNSTRAAT 2, P O BOX 9000, 2300 PA LEIDEN, NETHERLANDS LEIDEN Part 4}, pages = {473-484}, abstract = {This study reanalyses some morphological and ultrastructural aspects of three Bunonema species. Specimens of B. penardi, B. hessi and B.franzi were studied using light microscopy and SEM. Bunonema franzi was also studied by TEM. The male of B. penardi is described, this being the first record of males in the genus Bunonema. Additional morphometric data on the females of this species are presented. SEM pictures show details of the deviant amphid position within the Bunonematidae. In contrast to earlier reports, our TEM results show that the evagination of the cuticle in ridges and tubercles is due to the thickening of the median zone of the cuticle. Ultrastructural details of the species-specific polygonal mesh network on the right body side are revealed. The rods that constitute this network lie above the epicuticle and are therefore extracuticular}, keywords = {BODY WALL, cuticle, FINE-STRUCTURE, GENUS, light microscopy, microscopy, morphology, Nematoda, PROTEIN, RHABDITIDA, SEM, STOMA, TEM, tubercle, ultrastructure, YOLK}, isbn = {1388-5545}, author = {Van Gansbeke, R. and Bert, W. and Govaerts, A. and Claeys, M. and Van Driessche, R. and Manhout, J. and Borgonie, G.} } @article {172, title = {Cuticular structure of three Bunonema species and first description of the male of B-penardi Stefanski, 1914 (Nematoda : Bunonematidae)}, journal = {NematologyNematology}, volume = {6}, year = {2004}, note = {Van Gansbeke, R Bert, W Govaerts, A Claeys, M Van Driessche, R Manhout, J Borgonie, GPart 4}, pages = {473-484}, abstract = {This study reanalyses some morphological and ultrastructural aspects of three Bunonema species. Specimens of B. penardi, B. hessi and B.franzi were studied using light microscopy and SEM. Bunonema franzi was also studied by TEM. The male of B. penardi is described, this being the first record of males in the genus Bunonema. Additional morphometric data on the females of this species are presented. SEM pictures show details of the deviant amphid position within the Bunonematidae. In contrast to earlier reports, our TEM results show that the evagination of the cuticle in ridges and tubercles is due to the thickening of the median zone of the cuticle. Ultrastructural details of the species-specific polygonal mesh network on the right body side are revealed. The rods that constitute this network lie above the epicuticle and are therefore extracuticular.}, isbn = {1388-5545}, author = {Van Gansbeke, R. and Bert, W. and Govaerts, A. and Claeys, M. and Van Driessche, R. and Manhout, J. and Borgonie, G.} } @article {188, title = {Baujardia mirabilis gen. n., sp n. from pitcher plants and its phylogenetic position within Panagrolaimidae (Nematoda : Rhabditida)}, journal = {NematologyNematology}, volume = {5}, year = {2003}, note = {Times Cited: 0 Article English Bert, W State Univ Ghent, Dept Biol, Ledeganckstr 35, B-9000 Ghent, Belgium Cited References Count: 26 731KR BRILL ACADEMIC PUBLISHERS PLANTIJNSTRAAT 2, P O BOX 9000, 2300 PA LEIDEN, NETHERLANDS LEIDEN Part 3}, pages = {405-420}, abstract = {Measurements. line drawings and scanning electromicrographs are provided of Baujardia mirabilis gen. n., sp. n., isolated from pitcher fluid of Nepenthes mirabilis from Thailand. The new genus differs from all known nematodes in having two opposing and offset spermatheca-like pouches at the junction of oviduct and uterus. It also differs from most known Rhabditida in having four cephalic setae instead of papillae. Phylogenetic analysis of small subunit rDNA sequence data robustly places the new genus within Panagrolaimidae as a sister taxon to Panagrellus. These unusual nematodes resemble Panagrellus in body size (1.8-2.7 mill in females, 1.3-1.9 mm in males) and in the monodelphic, prodelphic female reproductive system with thickened vaginal walls and prominent postvulval sac. However. they differ from Panagrellus in the characters mentioned above, in their comparatively longer stegostom and in the shape of the male spicules. Because of its aberrant characters, inclusion of this new genus in Panagrolaimidae requires changes to the family diagnosis}, keywords = {analysis, CEPHALOBIDAE, Evolution, FAMILY, freshwater, GENUS, MODEL, Nematoda, NEMATODE, nematodes, Nepenthes, new genus, new species, Panagrellus, phylogeny, REPRODUCTIVE-SYSTEM, RHABDITIDA, SEQUENCE, taxonomy, Thailand, TOOL}, isbn = {1388-5545}, author = {Bert, W. and De Ley, I. T. and Van Driessche, R. and Segers, H. and De Ley, P.} } @article {163, title = {Unusual intestinal lamellae in the nematode Rhabditophanes sp KR3021 (Nematoda : Alloinematidae)}, journal = {Journal of MorphologyJournal of Morphology}, volume = {264}, number = {2}, year = {2005}, note = {Willems, M Houthoofd, W Claeys, M Couvreur, M Van Driessche, R Adriaens, D Jacobsen, K Borgonie, G}, month = {May}, pages = {223-232}, abstract = {The free-living nematode Rhabditophanes sp. has recently been placed in a clade of animal parasites and may be a unique example of a reversal to a nonparasitic lifestyle. Detailed morphological analysis of the intestine reveals the unusual and unique structure of splitting microlamellae forming a meshwork with cavities along the entire intestinal tract. Secretion vesicles were observed along the whole tract and along the length of the lamellae. It is suggested that these lamellae are adaptations to a different digestive strategy where low food availability and a low absorption surface are compensated for by maximizing the nutrient uptake efficiency along the entire length of the intestine. The likely reversal to a free-living life cycle may have caused drastic changes in diet, providing the necessary driving forces to such morphological changes. (c) 2005 Wiley-Liss, Inc.}, isbn = {0362-2525}, author = {Willems, M. and Houthoofd, W. and Claeys, M. and Couvreur, M. and Van Driessche, R. and Adriaens, D. and Jacobsen, K. and Borgonie, G.} } @article {168, title = {Terrestrial nematodes from the Galapagos Archipelago. 10. Morphological and taxonomical analysis of Carcharolaimus ramirezi Thorne, 1967 (Dorylaimida : Qudsianematidae)}, journal = {NematologyNematology}, volume = {7}, year = {2005}, note = {De Ley, P Van Driessche, R Coomans, APart 1}, pages = {133-147}, abstract = {Carcharolaimus ramirezi was found in six soil samples from four islands of the Galapagos Archipelago. It is described for the first time since its original discovery, with particular emphasis on the morphology of its anterior end as seen under light microscope and SEM. Six large, but thin, liplets overhang the labial basket, which consists of thick plates ornamented with irregular ridges and denticles. Posterior to the labial basket, six pillars form a postlabial cage and provide attachment for eight dilatatores buccae. The species can survive desiccation and is probably well adapted to and soils. Paratypes of C bediensis were also studied and revealed that this species is actually synonymous with C banaticus, rather than being very close to C. ramirezi as suggested by previous descriptions. The recently proposed genus Carcharodiscus is rejected, and the possible synonymy of Carcharolaimus with the senior genus Antholaimus is noted. A compendium to the genus Carcharolaimus is provided.}, isbn = {1388-5545}, author = {De Ley, P. and Van Driessche, R. and Coomans, A.} }