Obelia dichotoma (Linnaeus, 1758)

Sea thread hydroid

Native range | All suitable habitat | Point map | Year 2050

This map was computer-generated and has not yet been reviewed.

Obelia dichotoma AquaMaps Data sources: GBIF OBIS

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Classification / Names Κοινά ονόματα | Συνώνυμα | CoL | ITIS | WoRMS

Hydrozoa | Leptothecata | Campanulariidae

Environment: milieu / climate zone / εύρος βάθους / distribution range Οικολογία

; Υφάλμυρο; εύρος βάθους 0 - 275 m (Αναφ. 116013). Polar

Distribution Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Εισαγωγές

Arctic, Atlantic, Indo-Pacific. Mostly polar, but also in subtropical, tropical, temperate and boreal climates.

Length at first maturity / Μέγεθος / Weight / Age

Γεννητική Ωρίμανση: L_m ? range ? - ? cm

Colonial (Ref. 19). Known from mangroves (Ref. 86642), tidal inlets, sheltered areas of bays, exposed areas of bays, including any ledges at their entrance, sounds, caves, still-water areas of anchialine ponds, shallow reefs, shallow coastal benthic habitats (< 25 m), deeper coastal substrates (25- 100m) of the offshore fore-reef slope and surface or near surface water layers, including porpitids and the halopelagic Sargassum sp. fauna (Ref. 86643). Also found in Carrie Bow Cay, Belize, in patch reefs, mangrove islands, Thalassia sp. beds, sand trough, outer ridge and fore-reef slopes on Thalassia sp. beds, mangrove roots, floating Sargassum sp. and substrates composed of dead corals and gorgonians at depths of 0.2 to 31 m ) (Ref. 87156). It is found mainly on hard substrates, wood, ropes, dead gorgonians and smaller colonies are epizoic to Symplectoscyphus spp., Bougainvillia muscus, Sertularella polyzonias, Hybocodon chilensis (Ref. 87801). As with other hydroids, this species exhibits a pelagic medusoid stage (Ref. 87156). Benthic suspension feeder. Feeds mainly on fecal pellets, organic matter, microalgae, and some zooplankton (Ref. 116236).

Life cycle and mating behavior Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | Larvae

Species exhibits both asexual and sexual reproduction by budding during hydroid stage and release of gametes in medusae stages (Ref. 1663, p. 23, 28). Period of reproductive maturity recorded for Carrie Bow Cay, Belize is 12th of April, during which the sample collected had gonophores or medusa buds (Ref. 87156).