Paradesmodora immersa Wieser 1954
- 1. Centro de Investigaciones Marinas, Universidad de La Habana, Calle 16 Número 114, Playa, CP 11300, Habana, Cuba. Email: maickel @ cim. uh. cu (corresponding author) & urn: lsid: zoobank. org: author: 869 FA 865 - 9251 - 489 D-B 399 - 1 BA 828530 C 6 D
- 2. Centro de Investigaciones Marinas, Universidad de La Habana, Calle 16 Número 114, Playa, CP 11300, Habana, Cuba. Email: maickel @ cim. uh. cu (corresponding author) & urn: lsid: zoobank. org: author: 4 D 8 DE 0 FF- 2 CC 1 - 4 DD 4 - BE 52 - 4 C 2 E 5 B 1527 DF
- 3. Royal Belgian Institute of Natural Sciences, rue Vautier 29, B- 1000, Brussels, Belgium. alexei @ cim. uh. cu & Biology Department, Ghent University, Ledeganckstraat 35, B- 9000, Gent, Belgium. wilfrida. decraemer @ naturalsciences. be & urn: lsid: zoobank. org: author: 61262451 - D 994 - 411 F- 8331 - 1 EB 9 AFACA 48 C
Description
Paradesmodora immersa Wieser, 1954
Fig. 9C–D, Table 2
Paradesmodora immersa Wieser, 1954: 39.
Material examined
2 ♂♂ and 4 juveniles, deposited in the nematode collection at Centro de Investigaciones Marinas, Universidad de La Habana, CUBA.
Description
Cuticle coarsely striated (annuli ~ 1 μm width). Inner and outer labial sensilla not observable. Four cephalic sensilla setiform (~ 4 μm long) at anterior level of amphidial fovea, no subcephalic setae. Amphidial fovea cryptospiral located far forward on the head. Six longitudinal rows of short somatic setae (~1–3 μm long) running along anterior and mid body region; they become in four rows on the posterior region. Buccal cavity medium-sized, one dorsal tooth, two ventrosublateral smaller teeth. Pharynx muscular with posterior bulb and plasmatic interruptions. Cardia extended. Secretory-excretory system not observable. Tail conical, last portion without striation, short setae present, spinneret present.
Male monorchic, anterior testis to the left of intestine. Spicules curved and slightly cephalated. Gubernaculum a narrow rod. Precloacal supplements (12–16) like small marks in the ventral cuticle.
Juveniles are similar to adults, except for the development of the reproductive system.
Remarks
Measured specimens resemble the holotype of P. immersa described by Wieser (1954); unfortunately, there are no other records of this species. Specimens in Wieser (1954) were larger (male: 2200 µm; female: 2410 µm) than ours (males: 1424–2081 µm, no females measured). The number of precloacal supplements reported by this author is 15 and this fits the range of specimens in our study (12–16).
Paradesmodora toreutes has been collected from a nearby region (Florida). It can be clearly differentiated from P. immersa by: (1) the cuticular differentiation of the head (plates surrounding the amphids vs no plates); (2) the proximal end of spicule with a notch in the capitulum vs rounded shape); (3) the number of precloacal supplements (10 vs 15); and (4) longer tail in males (c´ = 6 vs c´= 3).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Desmodoridae
- Genus
- Paradesmodora
- Kingdom
- Animalia
- Order
- Desmodorida
- Phylum
- Nematoda
- Scientific name authorship
- Wieser
- Species
- immersa
- Taxon rank
- species
- Taxonomic concept label
- Paradesmodora immersa Wieser, 1954 sec. Armenteros, Ruiz-Abierno & Decraemer, 2014
References
- Wieser W. 1954. Free-living marine nematodes II. Chromadoroidea. Acta Universitatis Lundensis (N. F. 2) 50, C. W. K. Gleerup, Lund.
- Wieser W. & Hopper B. 1967. Marine Nematodes of the east coast of North America. I. Florida. Bulletin of Museum of Comparative Zoology 135: 239 - 344.