Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-26T18:27:28.708Z Has data issue: false hasContentIssue false
  • English
  • Français

A new species of Zanclea (Cnidaria: Hydrozoa) associated with scleractinian corals from Okinawa, Japan

Published online by Cambridge University Press:  23 September 2011

M. Hirose  and
E. Hirose
M. Hirose*
Affiliation:
Faculty of Science, University of the Ryukyus, Senbaru, Nishihara, Okinawa 903-0213, Japan
E. Hirose
Affiliation:
Faculty of Science, University of the Ryukyus, Senbaru, Nishihara, Okinawa 903-0213, Japan
*
Correspondence should be addressed to: M. Hirose, Faculty of Science, University of the Ryukyus, Senbaru, Nishihara, Okinawa 903-0213, Japan email: mhirose@zenno.jp
Get access Rights & Permissions [Opens in a new window]

Abstract

The new species of Zanclea sango sp. nov. is described from Okinawajima Island, Ryukyu Archipelago, south-western Japan. The new hydrozoan species is associated with at least three scleractinian corals (Pavona divaricata, P. venosa and Psammocora contigua). Zanclea sango sp. nov. is a polymorphic hydroid and the hydrorhiza grows between the coral skeleton and calicoblastic ectoderm. The hydrocaulus and hydrorhiza are surrounded by perisarc. Newly released medusae are almost spherical, with four perradial exumbrellar nematocyst pouches including stenoteles, and two long marginal tentacles with cnidophores containing macrobasic euryteles. Zanclea sango sp. nov. is allied to Zanclea gilii Boero et al., 2000 and Zanclea margaritae Pantos & Bythell, 2010, but it is distinguished by its cnidome, the presence of a perisarc around hydrorhiza, and lower host-specificity. According to a hypothetical Zanclea phylogeny, the ancestral species of Zanclea had an opportunistic association with some benthic organisms, such as algae or bivalves, and its hydrorhiza was covered by a perisarc. Later, some species established specific associations with benthic animals, after which the hydrorhiza lost the perisarc and became directly covered with host tissue. Among Zanclea inhabiting corals, the present species, with multiple coral host species and a perisarc around the hydrorhiza, seems to retain more ancestral character states than Z. gilii and Z. margaritae, which have specific coral host species and no perisarc around the hydrorhiza.

Keywords

CnidariaHydrozoanew speciesperisarcScleractiniasymbiosis
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 92 , Issue 5 , August 2012 , pp. 877 - 884
Copyright
Copyright © Marine Biological Association of the United Kingdom 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Boero, F. and Bouillon, J. (2005) Cnidaria and Ctenophora. In Rhode, K. (ed.) Marine parasitology. Collingwood, Victoria: CSIRO Publishing, pp. 177–182.Google Scholar
Boero, F., Bouillon, J. and Gravili, C. (2000) A survey of Zanclea, Halocoryne and Zanclella (Cnidaria, Hydrozoa, Anthomedusae, Zancleidae) with description of new species. Italian Journal of Zoology 67, 93–124.Google Scholar
Brooks, W.R. and Mariscal, R.N. (1985) Protection of the hermit crab Pagurus pollicaris from predators by hydroid-colonized shells. Journal of Experimental Marine Biology and Ecology 87, 111–118.Google Scholar
Calder, D. (1988) Shallow-water hydroids of Bermuda: the Athecatae. Royal Ontario Museum, Life Science Contributions 148, 1–107.Google Scholar
Christensen, H.E. (1967) Ecology of Hydractinia echinata (Fleming) (Hydroidea, Athecata). I. Feeding biology. Ophelia, International Journal of Marine Biology 4, 245–275.Google Scholar
Coward, W.E. (1909) On Ptilocodium repens a new gymnoblastic hydroid epizoic on a pennatulid. Verslagen der Zittingen van de Wis-en Natuurkundige Afdeeling der Koninklijke Akademie van Wetenschappen, Amsterdam, Section of Sciences 11, 635–641.Google Scholar
Gegenbaur, C. (1857) Versuch eines Systemes der Medusen, mit Beschreibung neuer oder wenig bekannter Formen; zugleich ein Beitrag zur Kenntniss der Fauna des Mittelmeeres. Zeitschrift für Wissenschaftliche Zoologie 8, 202–273.Google Scholar
Gili, J.M. and Hughes, R.G. (1995) The ecology of marine benthic hydroids. Oceanography and Marine Biology: an Annual Review 33, 351–426.Google Scholar
Gili, J.M., López-González, P.J. and Bouillon, J. (2006) A new Antarctic association: the case of the hydroid Sarsia medelae (new sp.) associated with gorgonians. Polar Biology 29, 624–631.Google Scholar
Hastings, A.B. (1930) On the association of a gymnoblastic hydroid (Zanclea protecta, sp. n.) with various cheilostomatous Polyzoa from the tropical E. Pacific. Annals and Magazine of Natural History 5, 552–560.Google Scholar
Pantos, P. and Bythell, J.C. (2010) A novel reef coral symbiosis. Coral Reefs 29, 761–770.Google Scholar
Petersen, K.W. (1990) Evolution and taxonomy in capitate hydroids and medusae (Cnidaria, Hydrozoa). Zoological Journal of the Linnean Society 100, 101–231.Google Scholar
Puce, S., Bavestrello, G., Di Camillo, C.G. and Boero, F. (2007) Symbiotic relationships between hydroids and bryozoans. Symbiosis 44, 137–143.Google Scholar
Puce, S., Calcinai, B., Bavestrello, G., Cerrano, C., Gravili, C. and Boero, F. (2005) Hydrozoa (Cnidaria) symbiotic with Porifera: a review. Marine Ecology 26 73–81.CrossRefGoogle Scholar
Puce, S., Cerrano, C., Boyer, M., Ferretti, C. and Bavestrello, G. (2002) Zanclea (Cnidaria: Hydrozoa) species from Bunaken Marine Park (Sulawesi Sea, Indonesia). Journal of the Marine Biological Association of the United Kingdom 82, 943–954.Google Scholar
Puce, S., Cerrano, C., Di Camillo, C.G. and Bavestrello, G. (2008a) Hydroidomedusae (Cnidaria: Hydrozoa) symbiotic radiation. Journal of the Marine Biological Association of the United Kingdom 88, 1715–1721.Google Scholar
Puce, S., Di Camillo, C.G. and Bavestrello, G. (2008b) Hydroids symbiotic with octocorals from the Sulawesi Sea, Indonesia. Journal of the Marine Biological Association of the United Kingdom 88, 1643–1654.Google Scholar
Schuchert, P. (1996) The marine fauna of New Zealand: athecate hydroids and their medusae (Cnidaria: Hydrozoa). New Zealand Oceanographic Institute Memoir 106, 1–159.Google Scholar
Stechow, E. (1909) Beiträge zur Naturgeschichte Ostasiens: hydroid-polypen der japanischen Ostküst. Abhandlungen der Bayerischen Akademie der Wissenschaften (Mathematisch-Physikalischen K1asse) 1, 1–111.Google Scholar
Watson, J.E. (1980) The identity of two tubularian hydroids from Australia with a description and observations on the reproduction of Ralpharia magnifica gen. et sp. nov. Memoirs of the National Museum of Victoria 41, 53–63.Google Scholar
Watson, J.E. (1984) Two new species of tubularian hydroids from southern Australia. Memoirs of the National Museum of Victoria 45, 7–12.Google Scholar
Yamada, M. and Kubota, S. (1987) Preliminary report on the marine hydroid fauna in Okinawa Islands. Galaxea 6, 35–42.Google Scholar