Heard Island and McDonald Islands country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: never/rarely | Ref:
Regulations: no regulations | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/hm.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Peña Cantero, A.L. and W. Vervoort, 2003
National Database:

Common names from other countries

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Classification / Names / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS

> Leptothecata () > Sertulariidae ()

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

; diepteverspreiding 63 - 799 m (Ref. 7414). Polar

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Introducties

Western Indian Ocean and the Antarctic.

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm Max length : 6.0 cm COLD mannelijk/geslacht niet bekend; (Ref. 7414)

Korte beschrijving Morfologie

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.

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).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

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

Voornaamste referentie Referenties | Coördinator | Medewerkers

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

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet beoordeeld

Status bij CITES (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

Harmless

Gebruik door de mens

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Tools

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Meer informatie

Landen
FAO regio's
Ecosystems
Voorkomen
Introducties
Stocks
Ecologie
Dieet
voedselitems

Populaire namen
Synoniemen
Predators
Voortplanting
Geslachtsrijpheid
Kuitschieten
Fecundity
Eieren
Ontwikkeling van de eieren

Leeftijd/Grootte
Groei
Lengte-gewicht parameters
Lengte-lengte parameters
Morfologie
Larven
Abundantie

Referenties
Mass conversion

Medewerkers
Illustraties

Internet-bronnen

Estimates based on models

Preferred temperature (Ref. 115969): -1.7 - 1.9, mean -0.5 (based on 326 cells).

Kwetsbaarheid (Ref. 71543): Low vulnerability (10 of 100).

Staurotheca dichotoma Allman, 1888