Achelia alaskensis

Achelia alaskensis   (Cole, 1904)


Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Achelia alaskensis  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 0 - 180 m (Ref. 2153).  Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Pacific and Arctic Oceans: Aleutian Islands, Bering Sea (Ref. 2153). Subtropical, Temperate.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 1.0 cm LS male/unsexed; (Ref. 2153)

Short description Morphology

Tiny species, leg span slightly less than 1 cm. Trunk circular in outline, lateral processes contiguous, armed with 0 to 3 short setae. Ocular tubercle very low, not as tall as its diameter, eyes well pigmented. Proboscis typical. Abdomen extending only to distal tip of first coxae, fourth leg pair. Chelifores short, with short distal setae, chelae stubs oval. Palps 8 segmented, short. Ovigers typical. Legs moderately slender with few setae, propodus slender with 3 primary heel spines and 2 lateral smaller spines, sole with 6 to 7 short small spines. Auxiliaries about 0.7 as long as main claw (Ref. 2153, p. 2).

Biology     Glossary (e.g. epibenthic)

Larvae found to develop on the hydromedusa Polyorchis karafutoensis (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

Child, C.A. 1995 Pycnogonida of the Western Pacific Islands XI. Collections from the Aleutians and other Bering Sea islands, Alaska. Smithsonian Contributions to Zoology 569:1-33. (Ref. 2153)

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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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): 4.6 - 15.8, mean 8.9 (based on 616 cells).
Fishing Vulnerability (Ref. 71543): Low vulnerability (10 of 100).
Price category (Ref. 80766): Unknown.

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