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Staurotheca dichotoma   Allman, 1888


Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Staurotheca dichotoma   AquaMaps   Data sources: GBIF OBIS
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Staurotheca dichotoma
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drawing shows typical fish in this Family.

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

Hydrozoa | Leptothecata | Sertulariidae

Environment / Climate / Range Ecology

Benthic; depth range 63 - 799 m (Ref. 7414).  Polar

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Western Indian Ocean and the Antarctic.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 6.0 cm COLD male/unsexed; (Ref. 7414)

Short description Morphology

Colonies monosiphonic, consisting of a mass of interwoven, anastomosing branches up to 60mm in diameter; without distinct main stem. Hydrothecae arranged in decussate pairs, forming four longitudinal rows of hydrothecae. Hydrothecae immersed into the branches for ca one-third of their volume. Hydrotheca cylindrical in lateral view, curving slightly outwards; in frontal view slightly inflated basally. Adcauline hydrothecal wall largely adnate to internode, but with a distinct free portion; this part straight or slightly concave. Abcauline hydrothecal wall straight basally, but becoming concave distally. Hydrothecal aperture circular, large and slightly tilted downwards. Rim of hydrotheca even and frequently with renovations; diaphragm mushroom-shaped, provided with two abcauline perisarc projections pointing to the lumen of hydrotheca. Male and female gonothecae present, both originating at hydrothecal base. Female gonotheca urn-shaped, provided with a wide neck with distal, circular aperture; gonothecal wall with a few transverse striae at base of neck. Male gonotheca fusiform, with a short neck, distally having a small, circular aperture.

Biology     Glossary (e.g. epibenthic)

Minimum depth from Ref. 92901. Species inhabits bottoms of mud or mud with detritus; sand, pebbles and stones. It is used as a substratum by other hydroids (Ref. 7414). Throughout the year, with exemption on winter times. Fertile colonies were collected in February, May, June and December (Ref. 7414).

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

Throughout the year, with exemption on winter times. Fertile colonies were collected in February, May, June and December.

Main reference References | Coordinator | Collaborators

Peña Cantero, A.L. and W. Vervoort. 2003. (Ref. 7414)

IUCN Red List Status (Ref. 115185)

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

Internet sources

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

Estimates of some properties based on models

Vulnerability (Ref. 71543)
Low vulnerability (10 of 100)
Price category (Ref. 80766)