Ascorhynchus cooki   Child, 1987


Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Ascorhynchus cooki  AquaMaps  Data sources: GBIF OBIS
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No drawings available for Ammotheidae.

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Pycnogonida | Pantopoda | Ammotheidae

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

Bathypelagic; depth range 1463 - 2992 m (Ref. 9).  Temperate

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Southwest Pacific and the Antarctic: Macquarie Island Ridge, New Zealand and Australia.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm

Short description Morphology

Leg span: 180 mm. Trunk: smooth with conical dorsomedian tubercles on segment posteriors, separated from lateral processes with smaller conical tubercles on dorsodistal tips. No appendage setae or spines. Neck: long, ocular tubercle as tall as trunk tubercles, positioned dorsally to oviger bases at posterior third of neck length. Eyes: small, indistinct. Proboscis: tripartite shape with proximal and distal rings. Abdomen: long, downward ventrally to plane of trunk. Chelifore: scapes 2 segments short, subequal in length, chelae vestigial, tiny knobs with minute segmentation line. Palps and ovigers: typical. Male oviger sixth segment with long and short setae subsequent to strigilis which has 3 to 5 rows of narrow denticulate spines. Terminal claw: short, small. Legs: long and slender, without spines or setae. Femur: long segment, tarsus shorter than propodus, claws short, claws of first leg pair small, no longer than wide. Cement glands: extend from proximal femore to distal first tibiae (Ref. 9).

Biology     Glossary (e.g. epibenthic)

Giant species.

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

Child, C.A. 1998. (Ref. 9)

IUCN Red List Status (Ref. 130435: Version 2024-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Internet sources

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

Preferred temperature (Ref. 115969): 1.4 - 2.6, mean 2.4 (based on 279 cells).
Price category (Ref. 80766): Unknown.

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