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Nematology 100 Lecture 2 Slides
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Labial Configurations - Criconematidae
after Bert, 2012
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Anterior Region - Tylenchoidea
cephalic framework cone shaft knobs procorpus metacorpus valve nerve ring lateral field esophago-intestinal junction intestine esophageal glands dorsal esophageal gland orifice esophageal lumen isthmus hemizonid excretory pore excretory canal head After Brzeski, 1998 Bert, 2012
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Anterior Region - Tylenchoidea
amphidial canal nerve processes esophageal gland opening esophageal lumen stylet protractor muscle stylet somatic muscles cephalic framework stoma amphid aperture after Endo, 1980 Anterior Region - Tylenchoidea
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Anterior Region – Tylenchoidea
Tylenchidae
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Esophageal Configuration
Enoplea Chromadorea cardia median bulb isthmus intestine odontostyle stoma setae teeth stylet procorpus postcorpus
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Teeth – immovable and moveable
cone shaft knobs stylet Chromadorea Enoplea
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Enoplea Enoplia Dorylaimia Mermithida Trichinellida Enoplida
Mermis sp. Trichuris sp. Belbolla sp. Enoplida Triplonchida Dorylaimida Mononchida
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Chromadorea Chromadoria Chromadorida Desmodorida Monhysterida Rhabditida
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Tail Shapes attenuated with spinneret conoid digitate filiform
Con spinneret attenuated with spinneret conoid digitate filiform conoid attenuated conoid curved cylindroid rounded mucronate multidigitate ventrally curved subdigitate
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Female Reproductive System -monovarial, prodelphic example
spermatheca uterus oocytes postvulval uterine sac germinal zone columella ovary oviduct after Bert, 2012
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Male Reproductive System -monorchic example
spicule gubernaculum cloaca hypotygma bursa phasmid vas deferens testis ejaculatory duct seminal vesicle
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From Holovachov and Boström, 2010
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Nematode Sensilla – basic structures
after Bert, 2012
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Amphids – anterior chemosensory sensillae
a.d. = amphidial duct cu. = cuticle ep. = epidermis fov. = fovea g.c. = gland cell m.d. = multivillous dendrite s.c. = socket cell s.r. = sheath receptor after Bert, 2012; Coomans, 1979
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Phasmids – posterior chemosensory sensillae
scutellum lateral field (4 incisures) anus rectum intestine phasmid after Bert, 2012
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Male tail region Female tail region spicule gubernaculum cloaca
hypotygma bursa phasmid lateral field (4 incisures) anus rectum intestine phasmid Female tail region
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Deirids – minute lateral sensillae
after Bert, 2012
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