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Females:
- Didelphic, amphidelphic, ovary branches reflexed antidromously.
- Vagina straight, without cuticularizations, surrounded by single
sphincter muscle.
- Vulva midventral, a transverse slit.
- Rectum absent.
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Cobbionema acrocerca A-B: female head, detail and surface; C: male
head, surface; D: male anterior; E: female amterior gonad; F: female caudal;
G: male caudal H: spicule, I: gubernacular crura. Scale ber = 20 um.
Drawings from Ahmed et al., 2020. |
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Males: |
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- Diorchic, with outstretched anterior testis and reflexed posterior
testis.
- Spicules paired and symmetrical, elongate, consisting of two
sections separated by a constriction, nearly straight, with rounded m
- Gubernaculum reduced to two sublateral crura, arcuate conoid
in shape, flanking distal part of spicules.
- Precloacal supplements midventral.
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
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Predatory marine nematodes. Recorded from bottom sediments between 200
and 500m deep off the coast of Sweden.
Predatory: intestinal contents observed include undigested remains
(spicules and gubernacula) or partially digested entire bodies of a variety of
nematode species, including Chromadoridae.
Ahmed, M., Bostrom, S., Holovachov, O. 2020. Revision of the genus Cobbionema
Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae). European Journal of
Taxonomy 702; 1-34. :https://doi.org/10.5852/ejt.2020.702