Tanystylum orbiculare

Tanystylum orbiculare   Wilson, 1878


Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Tanystylum orbiculare  AquaMaps  Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Pycnogonida | Pantopoda | Ammotheidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic; depth range 5 - 200 m (Ref. 1456).  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-West Pacific, Southwest Atlantic, North Atlantic, and the Mediterranean: Africa and West Atlantic.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm

Short description Morphology

Ocular tubercle low, with tiny apical cone. Proboscis ovoid, with distal constriction around mouth. Abdomen ovoid, extending almost to distal rim of first coxae of fourth leg pair, with 4 to 6 short distal setae. Chelifores with single short segment, about twice as long as wide, each with 3 distal setae; chelae absent. Palps 5 segmented (sometimes 6), extending slightly beyond proboscis; third segment longest. Ovigers 10-segmented, smaller in female; seventh segment of male without typical apophysis ("elbow") but with 3 or 4 long spines; terminal segment tiny, with 2 long, simple spines. Legs robust, with typical setose dorsal swellings; propodus large, with dorsal and lateral setae, 3 large heel spines, and auxiliary claws more than half length of robust main claw (Ref. 2115, p. 35).

Biology     Glossary (e.g. epibenthic)

Minimum depth from Ref. 116112. Epibiotic (Ref. 116112). Common inhabitant of Sargassum sp. (Ref. 2115, page 35). Feeds on a demosponge (Ref. 121217).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Members of the class Pycnogonida are gonochoric and sexually dimorphic. During copulation, male usually suspends itself beneath the female. Fertilization occurs as the eggs leave the female's ovigers. Males brood the egg masses until they hatch. Life cycle: Eggs hatch into protonymphon larva then to adults.

Main reference References | Coordinator | Collaborators

Australian Biological Resources Study 2000 Australian Faunal Directory. World Wide Web electronic publication. http://www.deh.gov.au/biodiversity/abrs/online-resources/fauna/index.html (Ref. 1456)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Price category (Ref. 80766): Unknown.

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