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Sea Cucumbers The globally unique fauna of the Victorian coast My acknowledgement and gratitude for: - Images provided by Marine Research Group members.

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Presentation on theme: "Sea Cucumbers The globally unique fauna of the Victorian coast My acknowledgement and gratitude for: - Images provided by Marine Research Group members."— Presentation transcript:

1 Sea Cucumbers The globally unique fauna of the Victorian coast My acknowledgement and gratitude for: - Images provided by Marine Research Group members Leon Altoff, John Eichler and Platon Vafiadis. - Assistance with image editing and PowerPoint by Liz Dane (Museum Victoria). P. Mark OLoughlin Honorary Associate, Museum Victoria, Marine Science (since 1980)

2 Think small! Think small! Think hidden! Think hidden! Think undiscovered species! Think undiscovered species! Think behaviour (social, reproductive, nutrition)! Think behaviour (social, reproductive, nutrition)!

3 Smilasterias multipara OLoughlin and OHara, 1990 Holotype, NMV F53036 Echinoderm (seastar) gastric brooding

4 Echinoderm (seastar) male on female pseudo-copulation Japan species Archaster typicus Müller and Troschel, 1840

5 Echinoderm (seastar) reproduction by splitting (fissiparity) Coscinasterias muricata Verrill, 1867 [larger] Allostichaster polyplax (Müller and Troschel, 1844) [smaller]

6 Meridiastra fissura OLoughlin, 2002 Echinoderm (seastar) small red optical cushion sense organ

7 Brown papillate sea cucumber Australostichopus mollis (Hutton, 1872)

8 Smooth tapered sea cucumber Paracaudina australis (Semper, 1868)

9 Mottled box sea cucumber Plesiocolochirus ignava (Ludwig, 1875)

10 Eichlers sea cucumber Staurothyone sp. (new) Chocolate sea cucumber Staurothyone inconspicua (Bell, 1887)

11 Falconers sea cucumber or Caterpillar sea cucumber Australostichopus mollis (Hutton, 1872)

12 Golden-red sea cucumber Squamocnus aureoruber OLoughlin and OHara, 1992 Button and cup ossicles from body wall Rod ossicle from tentacle

13 Body wall table ossicle Violet sea cucumber Cucumella mutans (Joshua, 1914) Blue-grey sea cucumber Neoamphicyclus lividus Hickman1962

14 Rowes sea cucumber Cucuvitrum rowei OLoughlin and OHara, 1992 White sea cucumber Trachythyone candida OLoughlin and OHara, 1992

15 Black sea cucumber Psolidiella nigra Mortensen, 1925

16 Feet covered sea cucumber Lipotrapeza vestiens (Joshua, 1914)

17 Red worm sea cucumber Taeniogyrus roebucki (Joshua, 1914) Wheel and hook ossicles from body wall

18 Violet-flecked sea cucumber Trochodota sp. cf. allani (Joshua, 1912)

19 Wheel and bracket rod ossicles White spotted pink sea cucumber Chiridota gigas Dendy and Hindle, 1907

20 Plate and anchor ossicles Sticky sea cucumber Leptosynapta dolabrifera (Stimpson, 1855)

21 Black and white psolid sea cucumber Ceto cuvieria (Cuvier, 1817) South Australia

22 Antarctic psolid sea cucumber Psolus antarcticus (Philippi, 1857) Macquarie Island

23 Hickmans psolid seacucumber Psolidium ravum Hickman, 1962 Syntype AM J7202 (30 mm long) Specimen from Tasmania, Derwent Estuary

24 Golden-red sea cucumber Squamocnus aureoruber OLoughlin and OHara, 1992 Specimen 7 mm long Various stages of fissiparity

25 Constrictions sea cucumber Molpadiodemas constrictus OLoughlin and Ahearn, 2005 Paratype USNM (51 mm long) Specimen from North Atlantic Ocean, Puerto Rico Trench, 7086 m, 20 January 1973, collected by RV Gilliss

26 Marsupial sea cucumber Neocnus bimarsupiis OLoughlin and OHara, 1992 Specimen 5 mm long

27 Maroon brooding sea cucumber Pentocnus bursatus OLoughlin and OHara, 1992 Holotype, NMV F57549 (6 mm long) Juveniles and embryos Cape Paterson 1980, 1981

28 Chocolate sea cucumber Staurothyone inconspicua (Bell, 1887) Brood juveniles dissected from the coelom of a female Coelomic embryo / juvenile attached to gonad tubule

29 Blue-grey sea cucumber Neoamphicyclus lividus Hickman, 1962 Adult (10 mm long) with 58 brood juveniles removed from coelom Adult (20 mm long) with brood 528 brood juveniles (October) Adult (30 mm long) with single large brood juvenile (December)

30 Blue-grey sea cucumber Neoamphicyclus lividus Hickman, 1962 Brood juveniles removed from coelom

31 Brood embryos in pockets around anterior body wall Hickmans sea cucumber Psolidiella hickmani OLoughlin, 2000 Black sea cucumber Psolidiella nigra Mortensen, 1925

32 Psolidocnus amokurae (Mortensen, 1925) New Zealand specimen and species NZ specimen from Kaikoura, 91 m, 14 June 1961

33 Psolidocnus amokurae (Mortensen, 1925)

34 Cucumaria sp. cf. georgiana (Lampert, 1886) Composite drawing by Mark OLoughlin of male (with genital papilla in tentacle crown) and female (with anterior interradial marsupia with openings at the introvert) Specimen from Prydz Bay, Antarctica

35 Cucumaria sp. cf. georgiana (Lampert, 1886) Anterior view of female with juvenile emerging from marsupium, juveniles in marsupia Male (23 mm long) with digitate genital papilla (1.5 mm long) on oral disc Female (37 mm long) with with openings (two) into anterior interradial marsupia


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