Overview

Brief Summary

Ekologi dan Pemanfaatan Himerometra Robustipinna

Himerometra robustipinna (Carpenter, 1881) dapat hidup di dasar perairan laut lepas, terutama yang bersubstrat keras dan berarus relatif kuat. Ekosistem terumbu karang merupakan habitat yang paling umum untuk sebagian jenis lili laut termasuk Himerometridae. Pada ekosistem terumbu karang, biota ini biasa menempati daerah tubir dan lereng terumbu. Beberapa persyaratan habitat biota ini ialah arus lokal relatif kuat, perairan yang jernih, tersedianya plankton yang cukup dan terlindung dari hempasan ombak yang kuat menyebabkan Himerometra robustipinna disebut juga sebagai biota yang sebarannya sangat ditentukan oleh kualitas habitat. Selain itu biota ini mempunyai respon negatif terhadap cahaya yang kuat (Fell 1966). Kaki cengkram atau cirrus Himerometra robustipinna memiliki panjang 1 cm – 4 cm untuk jenis-jenis lili laut yang hidup di terumbu karang. Namun untuk jenis-jenis tertentu yang hidup berlindung di dalam koloni karang batu kaki cengkram ini bias sangat tereduksi atau hilang sama sekali.

Hadir atau absennya spesies Himerometra robustipinna di suatu ekosistem terumbu karang tidak memberikan dampak yang berarti, tetapi secara langsung dapat memengaruhi populasi plankton di terumbu karang tersebut, dan secara tidak langsung dapat memengaruhi populasi ikan karang dan biota bentik di terumbu karang tersebut (BIRKELAND 1989). Biota ini masih belum banyak diteliti dan belum dimanfaatkan maksimal. Beberapa pemanfaatan yang sudah dilakukan yaitu ekstraksi terhadap biota lili laut untuk mendapatkan zat antioksidan. Status IUCN biota tersebut adalah tidak terevaluasi. Belum ada pengelolaan khusus terhadap spesies ini karena jumlahnya yang banyak dan tersebar luas di perairan tropis. Penelitian lebih lanjut terhadap biota ini sangat diperlukan untuk menguak pemanfaatan ekonomis atau sebagai bahan dasar produk tertentu.

  • http://www.marinespecies.org/
  • Aziz aznam at all. 2000. Beberapa catatan Mengenai Kehidupan Lili Laut. Oseana, Vol XVI. No. 3: 17-24
  • Birkeland, C. 1989. The Influence of echinoderms on coral-reef communities. In: Jangoux, M & J.M. Lawrence (eds.), Echinoderms studies 3. Balkema, Rotterdam: 1-79.
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© Himerometra AH Clark, 1907

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Physical Description

Diagnostic Description

description

Himerometra with stout, enlarged proximal pinnules that taper rapidly or gradually to the tip; of ~20-42 segments almost all broader than long, with distal ends unmodified or swollen, but never spinous. Distal edges of proximal brachials smooth or slightly produced. Arms 33-62 (usually ~45) up to 200 mm long. Diagnostic features of H. robustipinna and H. magnipinna overlap broadly, prompting their synonymy under the senior name.
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Type Information

Holotype for Himerometra robustipinna Clark, 1908
Catalog Number: USNM 25439
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Collector(s): United States Fish Commission
Year Collected: 1908
Locality: Sulu Archipelago, Tawitawi Islands, Tawitawi Island, Sangasiapu Island, Sulu, Philippines, North Pacific Ocean
Depth (m): 16 to 16
Vessel: Albatross R/V
  • Holotype: Clark, A. H. 1908. Smithson. Misc. Collns. 52, pt. 2(1820): 213.
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© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Ecology

Habitat

Depth range based on 9 specimens in 1 taxon.
Water temperature and chemistry ranges based on 5 samples.

Environmental ranges
  Depth range (m): 2 - 40
  Temperature range (°C): 25.567 - 28.366
  Nitrate (umol/L): 0.156 - 0.889
  Salinity (PPS): 33.884 - 35.083
  Oxygen (ml/l): 4.336 - 4.640
  Phosphate (umol/l): 0.044 - 0.238
  Silicate (umol/l): 0.506 - 3.887

Graphical representation

Depth range (m): 2 - 40

Temperature range (°C): 25.567 - 28.366

Nitrate (umol/L): 0.156 - 0.889

Salinity (PPS): 33.884 - 35.083

Oxygen (ml/l): 4.336 - 4.640

Phosphate (umol/l): 0.044 - 0.238

Silicate (umol/l): 0.506 - 3.887
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Dispersal

Depth range

0-57 m.
  • Rowe, F.W.E & Gates, J. (1995). Echinodermata. In ‘Zoological Catalogue of Australia’. 33 (Ed A. Wells.) pp xiii + 510 (CSIRO Australia, Melbourne.)
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Depth range

Littoral to 57 m.
  • Clark AH (1941) A monograph of the existing crinoids. 1(4a). Bull. U. S. Natl. Mus. 82:1-603, 61 pls.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Himerometra cf. robustipinna

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Himerometra robustipinna

Himerometra robustipinna is a species of crinoids belonging to the family Himerometridae.

Description[edit]

Himerometra robustipinna can reach a diameter of about 35 to 40 cm (14 to 16 in). It has a cup-shaped body with 33-62 arms (usually ~45) about 20 cm (8 in) long, extended out from the central disc. Mouth and anus are both on the upper side of the body. Usually this species has reddish or maroon arms, but it may have yellow or pale brown brachials with maroon pinnules. It feeds on detritus, phytoplankton and zooplankton caught by means of a sticky substance on the arms. It can cling onto corals with short appendages called cirri, but it also can freely swim. The larvae of this feather star swim freely with plankton for a few weeks, then they settle down growing into a stalked form. Mature specimen break the stalk becoming free-living.

Distribution[edit]

This species is widespread in the western Pacific and in the Indian Ocean, from Bay of Bengal up to China Sea, Great Barrier Reef, Indonesia, Philippines, South Japan.


Habitat[edit]

Himerometra robustipinna lives in the coastal waters with a coral reef ecosystem, relatively strong currents, clear water and plankton availability, at a depth of 0 - 57 m.


References[edit]

  • David J. Lane and Didier Vandenspiegel. 2003. A Guide to Sea Stars and Other Echinoderms of the World. Singapore Science Centre
  • WoRMS
  • Marine Species
  • EoL


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