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Achelia assimilis   (Haswell, 1885)

sea spiders

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Achelia assimilis   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Pycnogonida | Pantopoda | Ammotheidae

Environment / Climate / Range

Reef-associated; depth range 0 - 910 m (Ref. 9).  Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-Pacific and Southwest Atlantic. Tropical to temperate.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 0.1 cm TRKL male/unsexed; (Ref. 1666)

Biology     Glossary (e.g. epibenthic)

Among intertidal tufts of Cladophora prolifera; in coral reefs (Ref. 1666), until to a depth of at least 250 m (Ref. 92910). Inhabits hyrodozoan trees, stones, dead corals and red algae (Ref. 92908). 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 (Ref. 833).

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)

Short description Morphology

Trunk: suture lines complete, partial or lacking. 2 or more dorsomedian tubercles on trunk with or without similar tubercles on abdomen. Lateral processes: broad, more or less contiguous, with distal tubercles which differs in size and number. Proboscis: a slender ovoid as long as trunk. Chelifores: 2-segmented, scape longer than usual, with short dorsodistal tubercles or without. Chelae: tiny nubs, atrophied in adults. Palps: 8 segmented. Ovigers: 10 segmented, smaller in females, armed with 1-2 denticulate spines per distal 3 segments. Legs: slender, with or without low to tall tubercles, mostly dorsal if present. Male femur with 1 dorsodistal cement gland pore. Propodus: well curved, with 3-4 larger heel spines, 7-8 smaller sole spines, robust claw and stout auxiliaries of varying lengths (Ref. 9).

IUCN Red List Status (Ref. 114614)

   

CITES status (Ref. 94142)

Not Evaluated

Threat to humans

Human uses


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More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion

Internet sources

BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | ispecies | PubMed | Scirus | FishBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 4.8 - 21.1, mean 12.5 (based on 1241 cells; Ref. 115970).
Vulnerability (Ref. 71543)
Low vulnerability (10 of 100)
Price category (Ref. 80766)
Unknown