Stegella lobata ( Vanhöffen, 1910 )

Soto, Joan J. & Peña, Álvaro L., 2019, Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), Zootaxa 4570 (1), pp. 1-78 : 24-25

publication ID

https://doi.org/ 10.11646/zootaxa.4570.1.1

publication LSID

lsid:zoobank.org:pub:EF369E98-EBD9-4647-B081-65AD1794A27C

DOI

https://doi.org/10.5281/zenodo.5934927

persistent identifier

https://treatment.plazi.org/id/03B887B7-A479-FFEA-E983-F9E4FC8599FA

treatment provided by

Plazi

scientific name

Stegella lobata ( Vanhöffen, 1910 )
status

 

Stegella lobata ( Vanhöffen, 1910) View in CoL

( Fig. 7 View FIGURE 7 b–c)

Material examined. ANT XV/3: 48-4, few hydrothecae, c. 4 mm high, on dead octocoral; 48-5, one colony, c. 90 mm high, with gonothecae, and few hydrothecae, up to 3 mm high, on Sc. unifurcata ; 48-27, one colony, c. 60 mm high; 48-36, some stems, up to 20 mm high, on O. terranovae ; 48-44, some stems, up to 40 mm high, on polychaete tube; 48-44, one colony, c. 75 mm high, with gonothecae; 48-50, one colony, c. 60 mm high, on dead octocoral; 48-63, one colony, c. 60 mm high, with gonothecae; 48-77, one colony, c. 80 mm high, and few hydrothecae, c. 3 mm high, on Sy. weddelli ; 48-194, one hydrotheca, c. 5 mm high, on Sc. nana ; 48-197, some stems, up to 20 mm high, on B. subrufa ; 48-220, some stems, up to 120 mm high, on gravel and dead octocoral, with gonothecae; 48-276, few hydrothecae, up to 3 mm high, on Sc. nana ; ANT XVII/3: 111-9, one colony, c. 130 mm high, with gonothecae; 111-18, some hydrothecae, c. 6 mm high, on O. terranovae and Sc. nana ; ANT XXI/2: PS65/39, some stems, up to 110 mm high, on Sc. nana , with gonothecae; PS65/121, some stems, up to 70 mm high, on bryozoan, with gonothecae; PS65/132, one colony, c. 75 mm high; PS65/166, one hydrotheca, c. 2 mm high, on St. nonscripta ; PS65/175, some stems, up to 40 mm high, on B. subrufa and dead Oswaldella sp.; PS65/ 237, one colony, c. 110 mm high, on Sc. nana , with gonothecae, and few hydrothecae, c. 2 mm high, on Sy. exochus ; PS65/248, some stems, up to 40 mm high, on octocoral and H. incertus ; PS65/253, one colony, c. 60 mm high, on polychaete tube, with gonothecae; PS65/265, few stems, up to 5 mm high, on H. pseudodelicatulum ; PS65/276, one colony, c. 75 mm high, with gonothecae; PS65/281, one colony, c. 90 mm high, on sponge, with developing gonothecae; PS65/336, some stems, up to 30 mm high, on Sc. nana .

Remarks. Specimens analyzed have been observed using a wide range of basibionts as substrate (see above). Large colonies are seen in many cases overgrowing the basibiont almost completely. Stegella lobata seems to behave as an aggressive epibiont species that uses its host to reach large size. This relationship can be described as parasitism sensu lato, in which the epibiont is detrimental to the host but is not metabolically dependent upon it (see Gili et al. 2006 and literature cited).

Ecology and distribution. Previously collected at depths from 10 ( Naumov & Stepanjants 1972, as Stegella grandis ) to 700 m ( Naumov & Stepanjants 1962, as Stegella grandis ); present material was obtained from 62 to 417 m. Circum-Antarctic species (Peña Cantero et al. 2004).

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Campanulinidae

Genus

Stegella

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