Ctenophora of Australia Lisa-Ann GERSHWIN South Australian Museum, North Terrace, Adelaide, South Australia 5000 (Honorary)
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VOLUME 54 Part 3 MEMOIRS OF THE QUEENSLAND MUSEUM BRISBANE 30 DECEMBER 2010 © Queensland Museum PO Box 3300, South Brisbane 4101, Australia Phone 06 7 3840 7555 Fax 06 7 3846 1226 Email [email protected] Website www.qm.qld.gov.au National Library of Australia card number ISSN 0079-8835 NOTE Papers published in this volume and in all previous volumes of the Memoirs of the Queensland Museum may be reproduced for scientific research, individual study or other educational purposes. Properly acknowledged quotations may be made but queries regarding the republication of any papers should be addressed to the Editor in Chief. Copies of the journal can be purchased from the Queensland Museum Shop. A Guide to Authors is displayed at the Queensland Museum web site www.qm.qld.gov.au/organisation/publications/memoirs/guidetoauthors.pdf A Queensland Government Project Typeset at the Queensland Museum Ctenophora of Australia Lisa-ann GERSHWIN South Australian Museum, North Terrace, Adelaide, South Australia 5000 (Honorary). Email: [email protected] Wolfgang ZEIDLER South Australian Museum, North Terrace, Adelaide, South Australia 5000. Email: [email protected] Peter J.F. DAVIE Queensland Museum, PO Box 3300, South Brisbane, Queensland 4101 Citation: Gershwin, L., Zeidler, W. & Davie, P.J.F. 2010 12 30. Ctenophora of Australia. In, Davie, P.J.F. & Phillips, J.A. (Eds), Proceedings of the Thirteenth International Marine Biological Workshop, the Marine Fauna and Flora of Moreton Bay, Queensland. Memoirs of the Queensland Museum 54(3): 1–45. Brisbane. ISSN 0079–8835. ABSTRACT An overview of the Ctenophora of Australia is presented based on limited collecting efforts, together with the description of seven species new to science. Euplokamis evansae sp. nov. (Cydippida: Euplokamididae), has only been found in Tasmanian waters; it is distinguished from its congeners in the comb rows being about 4/5 of the body length, the tentacle bulbs being long and close to the stomach, and having extremely long polar plates. Pukia falcata gen. nov., sp. nov. (Cydippida: Pukiidae fam. nov.), is found across the tropical and subtropical north of Australia from Port Hedland, Western Australia, to the Moreton Bay region of southeastern Queensland; it has beehive-coiled tentilla, similar to those of the Euplokamididae, but differs from all other cydippids in having crescentic-shaped tentacle bulbs. Bolinopsis ashleyi sp. nov. (Lobata: Bolinopsidae), from Moreton Bay, differs from its large-lobed congeners in its striking pattern of broad red streaks along the ctene rows. Leucothea filmersankeyi sp. nov. (Lobata: Leucotheidae), from northwestern Tasmania, differs from other species in its genus in having narrow, blind tentacular pits; long slender papillae; and a pale orange tint to the body core. Ocyropsis vance sp. nov. (Lobata: Ocyrop - sidae), from southeastern Tasmania, is distinguished from other ocyropsids with a deeply - indented hourglass-shaped stomach in lacking tentacle bulbs and spots. Finally, three new forms of benthic ctenophores are reported from the Great Barrier Reef: Coeloplana mellosa sp. nov. (Platyctenida: Coeloplanidae) is found on the soft coral Sarcophyton sp., and differs from its congeners in a unique combination of pigmentation pattern, papillae number and distribution, and statocyst palp morphology; Coeloplana reichelti sp. nov., a larger form found on algae and seagrasses, differs from others in the number and form of papillae, colour pattern, and distribution; the last, a minute form found on the Crown-of-thorns starfish, Acanthaster planci, must await additional material for proper description. The distribution of Neis cordigera is broadened to include South Australia and Western Australia, and a redes - cription of the species is provided. The potential fisheries impacts by a form of Bolinopsis in Spencer Gulf, South Australia, are discussed. An annotated classification and a key for the ctenophores of Australia are given. q Ctenophora, Ctenophores, comb jellyfish, Cydippida, Platyctenida, Lobata, Cestida, Beroida, new family, new genus, new species, new records. Gelatinous zooplankton species are not typi - sen ted in nearly all marine pelagic zones, they cally well known, and this is especially true for are often difficult to capture and imposs ible (or members of the Ctenophora. Though well repre- nearly so) to preserve. Furthermore, their taxon- Memoirs of the Queensland Museum — Nature 2010 54(3) www.qm.qld.gov.au 1 Gershwin, Zeidler & Davie omy is poorly resolved, making identification cases comparative type material was non- often difficult and inconclusive. exis tent. Field-collected specimens were either Australian ctenophores are no exception and captured individually in plastic bags or glass are, in fact, even more poorly known than those jars while snorkeling, dipped individually from of many other regions. Ironically, von Lenden - jetties with a 500 µm mesh, 0.5 m-wide plankton feld (1885a) stated that the Australian cteno- net, or else ‘trawled’ with the net from a fixed phores ‘really appear to be rare.’ And while few loca tion relying on existing current for flow. species are reported, most are certainly not rare! Difficulties in preservation and inherent prob - In our experience, a small cydippid that is lems with shrinkage are a fundamental problem described as new herein and placed into a new in ctenophore taxonomy. Thus, whenever possible, family, is one of the commonest members of the live specimens were observed, photographed, Australian coastal gelatinous zooplankton com - and morphological and behavioural characters mu nity, and may be found throughout the year noted prior to preservation attempts. Tissue in just about any tropical and subtropical region. samples were also collected for future study Furthermore, an unidentified species of Bolinopsis when tissues from congeners become available. blooms in such plague proportions in the South Extensive efforts were made to relax and fix Australian gulfs in the summertime that one live material, often without success. For cydippids must wonder what effect this might have on the and beroids, room temperature asphyxiation larvae and food sources of other species in the gulfs. was the only effective method of relaxation, but The first mention of a ctenophore in Austra- was extremely labour intensive; preservation in lian waters was by Quoy & Gaimard (1824: 575), about 2% formalin produced moderately good who noted a Beroe from Port Jackson. Since that specimens. For lobates, no method of relaxation time, at least 24 additional species of ctenophores could be obtained, and efforts to preserve speci- have been reported from Australian coastal mens universally resulted in total tissue disinte- waters, with another ten newly reported herein, gration, leaving only scattered ctenes; the only including seven new to science. exception was Ocyropsis vance sp. nov., which During the course of the Thirteenth Inter- preserved quite perfectly in 1-2% formalin. national Marine Biological Workshop, in More - Measurements were made on preserved mate - ton Bay, Queensland, numerous collections were r ial with Max-Cal digital calipers, to the nearest made of ctenophores. As we were identifying 0.01 mm. Every effort was made to obtain true this material, we realised that it would be very dimensions across the widest points; however, useful to attempt to compile the first synopsis some specimens were too brittle to be spread of Australian ctenophores, and thus provide a out, in which case absolute measurements were foundation for productive future work. To do taken across the two farthest available points. this it was necessary to document not only the Body length (BL) was measured from the aboral historical literature, but also specimens in pole to the tip of the mouth for all specimens. In museum collections, and our own samples lobate ctenophores, lobe length (LL) was measured gathered over the last ten years. This has resul - from the inner corner where the lobe attaches to ted in numerous new distribution records, and the body to the distal tip; total length (TL) the descriptions of the seven new species includes the lobes. presented here. It is highly likely that many Morphological examinations were made more species will prove to be present than so far under a variety of dissecting scopes, depending recognised, and our knowledge of the on what was available at the institution where distibutional ranges of many will no doubt the specimens were studied. Microscopic and increase significantly with further targeted macroscopic digital images were made of all collecting. observable structures with Fujifilm MX-700 and MX-2700 cameras, Nikon CoolPix 995, and MATERIALS AND METHODS Sony DVD-201e in JPG format. While it was not The collections of ctenophores held in all possible to publish all photographs made of each Australian museums were examined; in most taxon, we have compiled a library of images of 2 Memoirs of the Queensland Museum — Nature 2010 54(3) Ctenophores of Australia Table 1. An annotated checklist of ctenophores recorded from Australian waters, including all previous records from Moreton Bay. Nomenclatural notes are given in parentheses, where appropriate. Abbreviations used: Queensland (QLD), New South Wales (NSW), Victoria (Vic), Tasmania (Tas), South Australia (SA), Western Australia (WA), Northern Territory (NT), Great Barrier Reef (GBR), Australia ‘Unspecified’ (AU), Southern Australia (SO), Northern Australia (NO);