Procamallanus  chimusensis		Contents		Rev 09/22/2022
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Procamallanus  Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Camallanidae Menu		Feeding		References
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Classification:

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Morphology and Anatomy:

• Medium-sized, cuticle almost smooth.
•  Oral aperture circular, surrounded by 8 submedian cephalic papillae arranged in 2 circles, each formed by 4 papillae
• Amphidssmall, lateral.
•  Buccal capsule differs in males and females; orange colored, approximately as long as wide in males and dark-brown, longer than wide in gravid females, with basal ring well developed and inner surface with spiral ridges.
•  Muscular part of esophagus claviform, slightly shorter than glandular part which is widest in middle, with slight constriction near posterior end.
• Deirids very small, simple, with cut distal end, situated well posterior to level of nerve-ring.
• Excretory pore somewhat anterior to posterior end of muscular esophagus.

Female:

• Body larger than males.
• Buccal capsule dark-brown, longer than wide in gravid females; with  spiral ridges and 3 conical, sharply pointed, anteriorly oriented teeth in its basal and middle regions; walls of capsule very thick, dark-brown,
• Muscular portion of esophagus slightly shorter than glandular portion.
• Vulva with slightly elevated lips, situated near middle of body,
• Uterus filled with numerous larvae (with few eggs).
• Tail conical; markedly narrowed distal portion with rounded tip.

Male:

• Body considerably smaller than females.
• Posterior end of body ventrally curved.
• Buccal capsule orange colored, approximately as long as wide in males
•  Caudal alae absent; only low lateral lines of slightly elevated cuticle extend from anterior to first pair of pre-anal papillae to that of second pair of postanal papillae
•  Pre-cloacal papillae: 4 pairs, of which first 3 pairs of larger papillae subventral and 1 pair of smaller papillae, located anterior to cloacal aperture, situated more ventrally.
• Postcloacal papillae: 4 pairs, of which second and third pairs of larger, first pair of smaller papillae, located just posterior to cloacal aperture, and fourth pair lateral, at level of last pair of subventrals .
•  Spicules equal length, weakly sclerotised and difficult to observe.
• Tail conical, with conspicuously narrowed posterior portion that has a rounded tip.

Ref Moravec et al., 2004

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Distribution:

Procamallanus
 chimusensis specimens were collected as nematode parasites  from the stomachs and intestines of catfishes (Trichomycterus spp). from streams in Colombia (Moravec et al., 2004).

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Feeding:

Intestinal parasite of freshwater catfish, Trichomycterus spp. (Moravec et al., 2004).

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Biology and Ecology:

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Life Cycle:

Ecophysiological Parameters:

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Ecosystem Functions and Services:

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Management:

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References:

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Copyright 1999 by Howard Ferris.
Revised: September 22, 2022.