Orthopyxis crenata ( Hartlaub, 1901b )
publication ID |
https://doi.org/ 10.5281/zenodo.186052 |
DOI |
https://doi.org/10.5281/zenodo.6212462 |
persistent identifier |
https://treatment.plazi.org/id/525D4C3A-FFFB-FF90-A285-EE2DFAD50BF3 |
treatment provided by |
Plazi |
scientific name |
Orthopyxis crenata ( Hartlaub, 1901b ) |
status |
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Orthopyxis crenata ( Hartlaub, 1901b) View in CoL
(fig. 4N–U, table 7)
Eucopella crenata Hartlaub, 1901b: 364 View in CoL , pl. 22 figs 27–31, 33–35. – Hirohito, 1969: 7, fig. 7.
Campanularia crenata View in CoL – Millard & Bouillon, 1973: 47, fig. 6 B–F. – Millard, 1975: 204, fig. 68A–F. – García Corrales et al., 1978: 19, fig. 7. – Hirohito, 1995 (English text): 53, fig. 15E–K.
Orthopyxis crenata View in CoL – Bale, 1924: 232, fig. 3. – Ralph, 1957: 838, fig. 6G–V. – Leloup, 1974: 17, fig. 15. – Cornelius, 1982: 58, fig. 5. – Watson, 2005: 589, fig. 34A–C.
Campanularia View in CoL ? crenata View in CoL – Millard, 1958: 170, fig. 2A–C, E.
Orthopyxis crenata View in CoL f. crenata Ralph, 1957: 838 View in CoL , fig. 6G–P, V.
Orthopyxis crenata View in CoL f. subtropica Ralph, 1957: 839, fig. 6Q–U.
Orthopyxis formosa Trebilcock, 1928: 2 View in CoL , pl. 1 fig. 2.
Orthopyxis delicata Trebilcock, 1928: 3 View in CoL , pl. 2 fig. 1– 1F. – Ralph, 1957: 840, fig. 7A–D.
Campanularia delicata View in CoL – Millard & Bouillon, 1973: 48, fig. 6G–M. – García Corrales et al., 1978: 22, fig. 8.
Campanularia View in CoL ? delicata View in CoL – Millard, 1975: 206, fig. 68G–L.
? Campanularia caliculata View in CoL – Hartlaub, 1905: 560, fig. K1 (not Campanularia caliculata Hincks, 1853 View in CoL ).
Material examined. Stn. 10 – 24.02.2008, A501 ( MHNG INVE 62831) (9 m): numerous hydrothecae and female gonothecae, on red algae, and a sterile colony epizoic on Thuiaria polycarpa Kirchenpauer, 1884 ; A522 ( MHNG INVE 62832) (8 m): numerous hydrothecae and a few gonothecae, epizoic on T. polycarpa .
Type locality. French Pass, Bare Island, New Zealand.
Description. Sample A501. Colony arising from flattened, ramified, anastomozing stolon. Pedicels of hydrothecae with moderately thick perisarc, ranging from slightly undulated to spirally grooved throughout. Hydrothecae bell-shaped, rounded in cross-section, perisarc thin, except basally where it forms an internal annular constriction for the attachment of hydranth; margin slightly flared, rim smooth though wavy to obviously crenate, with ca. 12 bluntly rounded marginal cusps, commonly varying in shape within the same colony; subhydrothecal spherule present. Gonothecae, female in present material, borne on stolon, laterally flattened; ovoid in frontal view, with distal end truncated, wider in middle, and narrowing basally into distinct, short, smooth pedicel. Two gonophores per gonotheca: one large, occupying nearly the whole lumen of gonotheca, and a smaller one, situated basally. Large gonophore with ca. 100–120 densely-packed eggs, arranged in about 8 outer and 5 inner longitudinal rows, each with 9– 10 eggs; the latter, polygonal to ovoid, up to 210 µm in larger diameter. Small gonophore with several tens of comparatively smaller eggs (45 µm), in a compact, oval mass. Additional, fine structures could not be observed. Male gonothecae not seen. Nematocysts (undischarged): large capsules (9.6–12.1) × (2.8–3.7) µm, small capsules (5.0–5.7) × (1.4–1.6) µm.
Remarks. Ralph (1967) distinguished two forms of this species, i.e. O. crenata f. crenata , with margins of hydrothecae ranging from smooth to shallowly scalloped within the same colony, and O. crenata f. subtropica, with margin always possessing 12–14 well defined, low, rounded cusps.
Hirohito (1969, 1995) described newly released medusoids as having 4 radial canals, 8 statocysts, a broad velum, and no manubrium.
The specimens from Smyth Channel, Chile, provisionally assigned to C. caliculata Hincks, 1853 by Hartlaub (1905) have hydrothecae with an even to shallowly cusped rim, and most probably belong to the present species, as indeed noticed by Hartlaub.
As stated by Cornelius (1982), if the present species has to be referred to the genus Campanularia Lamarck, 1816 , another specific name would be required to avoid homonymy with C. crenata Allman, 1876 .
World distribution. Mediterranean, eastern and western Atlantic and Pacific, Indian Ocean (Hirohito 1995).
Records from Chile. Smyth Channel ( Hartlaub 1905), South of Chiloé Island (present study).
MHNG |
Museum d'Histoire Naturelle |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Genus |
Orthopyxis crenata ( Hartlaub, 1901b )
Galea, Horia R., Häussermann, Verena & Försterra, Günter 2009 |
Campanularia
Millard 1975: 206 |
Campanularia crenata
Garcia 1978: 19 |
Millard 1975: 204 |
Millard 1973: 47 |
Campanularia delicata
Garcia 1978: 22 |
Millard 1973: 48 |
Campanularia
Millard 1958: 170 |
Orthopyxis crenata
Ralph 1957: 838 |
Orthopyxis crenata
Ralph 1957: 839 |
Orthopyxis formosa
Trebilcock 1928: 2 |
Orthopyxis delicata
Ralph 1957: 840 |
Trebilcock 1928: 3 |
Orthopyxis crenata
Watson 2005: 589 |
Cornelius 1982: 58 |
Leloup 1974: 17 |
Ralph 1957: 838 |
Bale 1924: 232 |
Campanularia caliculata
Hartlaub 1905: 560 |
Eucopella crenata
Hartlaub 1901: 364 |