Coeloplana astericola, the creeping comb jelly,[2] is a species of benthiccomb jelly from the tropical western Indo-Pacific region that lives as an episymbiont on starfish such as Echinaster luzonicus.
Platyctenids are unlike most other comb jellies in being bottom dwellers. They resemble flatworms in general appearance, being flattened dorso-ventrally and roughly oval in shape. The comb rows bearing bands of cilia, typical of comb jellies, are absent, but the anterior end of the animal bears a pair of well-developed, retractable tentacles that can be extended for feeding. The underside of the comb jelly is a "creeping sole", formed from the everted lining of the pharynx,[3] and on this it can move over the surface of the starfish. It has irregular red and white markings.[4]
Ecology
This comb jelly lives symbiotically on the aboral (upper) surface of starfish such as the banded bubble star, Echinaster callosus,[2] and the Luzon sea star, Echinaster luzonicus,[5] although it is unclear precisely how each of the parties benefit from the arrangement.[6]
Like other comb jellies, Coeloplana astericola has an extendible tentacular system composed of a pair of tentacles each bearing numerous tentilla on their ventral surfaces. To feed, the tentacles stream out with the current, sensory cilia are stimulated by swimming planktonic organisms, the tentilla extend in that direction and trap the prey.[7]
Most comb jellies are hermaphrodites; self fertilisation can occur but cross fertilisation is more common. The embryos are retained in specialist brood-sacs at first, before being released as planktonic larvae. Other members of this genus settle on corals, but this species settles on starfish.[3]
^ ab"Coeloplana astericola: Creeping Comb Jelly". Encyclopedia of Life. Retrieved 23 June 2018.
^ abRuppert, Edward E.; Fox, Richard, S.; Barnes, Robert D. (2004). Invertebrate Zoology, 7th edition. Cengage Learning. p. 191. ISBN978-81-315-0104-7.
^Hyman, Libbie Henrietta (1940). The Invertebrates: Echinodermata, the coelomate Bilateria. McGraw-Hill. p. 407.
^Barel, C.D.N.; Kramers, P.G.N. (1977). "A survey of the echinoderm associates of the north-east Atlantic area". Zoologische Verhandelingen. 156: 1–159 [4].
^Contributions to Canadian Biology: Being Studies from the Marine Biological Stations of Canada. C. H. Parmelee. 1931. p. 20.
^Eeckhaut, I.; Flammang, P.; Lo Bue, C.; Jangoux, M. (1997). "Functional morphology of the tentacles and tentilla of Coeloplana bannworthi (Ctenophore, Platyctenida), an ectosymbiont of Diadema setosum (Echinodermata, Echinoida)". Zoomorphology. 117 (3): 165–174. doi:10.1007/s004350050041.
External links
Photos of Coeloplana astericola on Sealife Collection
January 31, 2023
coeloplana, astericola, creeping, comb, jelly, species, benthic, comb, jelly, from, tropical, western, indo, pacific, region, that, lives, episymbiont, starfish, such, echinaster, luzonicus, echinaster, luzonicus, with, tentacles, streamingscientific, classifi. Coeloplana astericola the creeping comb jelly 2 is a species of benthic comb jelly from the tropical western Indo Pacific region that lives as an episymbiont on starfish such as Echinaster luzonicus Coeloplana astericolaCoeloplana astericola on Echinaster luzonicus with tentacles streamingScientific classificationKingdom AnimaliaPhylum CtenophoraClass TentaculataOrder PlatyctenidaFamily CoeloplanidaeGenus CoeloplanaSpecies C astericolaBinomial nameCoeloplana astericolaMortensen 1927 1 Coeloplana astericola showing streaming tentacles studded with tentilla Contents 1 Description 2 Ecology 3 References 4 External linksDescription EditPlatyctenids are unlike most other comb jellies in being bottom dwellers They resemble flatworms in general appearance being flattened dorso ventrally and roughly oval in shape The comb rows bearing bands of cilia typical of comb jellies are absent but the anterior end of the animal bears a pair of well developed retractable tentacles that can be extended for feeding The underside of the comb jelly is a creeping sole formed from the everted lining of the pharynx 3 and on this it can move over the surface of the starfish It has irregular red and white markings 4 Ecology EditThis comb jelly lives symbiotically on the aboral upper surface of starfish such as the banded bubble star Echinaster callosus 2 and the Luzon sea star Echinaster luzonicus 5 although it is unclear precisely how each of the parties benefit from the arrangement 6 Like other comb jellies Coeloplana astericola has an extendible tentacular system composed of a pair of tentacles each bearing numerous tentilla on their ventral surfaces To feed the tentacles stream out with the current sensory cilia are stimulated by swimming planktonic organisms the tentilla extend in that direction and trap the prey 7 Most comb jellies are hermaphrodites self fertilisation can occur but cross fertilisation is more common The embryos are retained in specialist brood sacs at first before being released as planktonic larvae Other members of this genus settle on corals but this species settles on starfish 3 References Edit WoRMS 2015 Coeloplana astericola Mortensen 1927 WoRMS World Register of Marine Species Retrieved 23 June 2018 a b Coeloplana astericola Creeping Comb Jelly Encyclopedia of Life Retrieved 23 June 2018 a b Ruppert Edward E Fox Richard S Barnes Robert D 2004 Invertebrate Zoology 7th edition Cengage Learning p 191 ISBN 978 81 315 0104 7 Hyman Libbie Henrietta 1940 The Invertebrates Echinodermata the coelomate Bilateria McGraw Hill p 407 Barel C D N Kramers P G N 1977 A survey of the echinoderm associates of the north east Atlantic area Zoologische Verhandelingen 156 1 159 4 Contributions to Canadian Biology Being Studies from the Marine Biological Stations of Canada C H Parmelee 1931 p 20 Eeckhaut I Flammang P Lo Bue C Jangoux M 1997 Functional morphology of the tentacles and tentilla of Coeloplana bannworthi Ctenophore Platyctenida an ectosymbiont of Diadema setosum Echinodermata Echinoida Zoomorphology 117 3 165 174 doi 10 1007 s004350050041 External links EditPhotos of Coeloplana astericola on Sealife Collection Retrieved from https en wikipedia org w index php title Coeloplana astericola amp oldid 1127178819, wikipedia, wiki, book, books, library,
