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Symplectoscyphus exochus

Symplectoscyphus exochus   Blanco, 1982


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

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

Hydrozoa | Leptothecata | Sertulariidae

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

Demersal; depth range 15 - 100 m (Ref. 7416).  Polar

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Antarctic: South Shetland and Antarctica.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 6.0 cm WD male/unsexed; (Ref. 7416)

Short description Morphology

Colonies consisting either of incipient stems or of a mass composed of numerous tangled stems and branches forming a mesh of up to 6 cm in diameter. Branching frequent, irregular and in several planes; sometimes alternate, but in two planes making an acute angle. Branches originating laterally at the hydrothecal base; plane formed by hydrothecae of lower-order branch perpendicular to that formed by hydrothecae of previous branch. Frequently, stem bent and giving rise to branches alternately arranged in two planes making an acute angle. Branches occasionally forming anastomosing stolons. Stem and branches divided into internodes; length of intenodes decreasing distally. Hydrothecae alternately arranged, curved abcaudally, with a distinct inflexion point where the adcauline wall becomes free. Hydrotheca adnate to internode for more than half of its adcauline wall. Free part of adcauline hydrothecal wall straight or slightly convex. Abcauline wall slightly concave. Hydrothecal aperture directed up- and outwards. Rim of hydrothecal aperture provided with three blunt cusps; the adcauline cusp slightly curved adcaudally at its distal extremity. Gonothecae oval, inserting at hydrothecal base. Gonothecal wall folded, forming a distinct keel descending in seven to ten turns. Gonotheca distally provided with a long, funnel-shaped neck bearing the gonothecal aperture and projecting far above cavity formed by the first turn of the keel.

Biology     Glossary (e.g. epibenthic)

Known at depths of 15 to 100 m and 80 to 634 m on muddy bottoms (Ref. 7416).

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

Fertile colonies were found from January to March, though in March only with immature gonothecae.

Main reference References | Coordinator | Collaborators

Peña Cantero, A.L., A. Svoboda and W. Vervoort. 2002. (Ref. 7416)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

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
Collaborators
Pictures

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): -1.9 - -1.2, mean -1.5 (based on 45 cells).
Vulnerability (Ref. 71543): Low vulnerability (10 of 100).