|
Not assigned |
Bonelliidae
Environment: milieu / climate zone / depth range / distribution range
Écologie
. Subtropical
Distribution
Pays | Zones FAO | Écosystèmes | Occurrences | Introductions
Arctic, Northeast Atlantic and the Mediterranean: Sweden, Norway, Ireland and Malta.
Length at first maturity / Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm Max length : 15.0 cm TL mâle / non sexé; (Ref. 358)
Description synthétique
Morphologie
The worm is provided with an appendix; is located on the head; or misleads, which, deployed, conferred on the species a size of about 150 cm, forked in its end, of a scale of 50 cm and whose edges are corrugated. Body: plum shape; 15 cm length. Males and females have an extremely different morphology. The males: 0.1- 0.3 cm length: they have neither horn nor intestine; and live in parasite in the esophagus of the female: only one can lodge some up to 85 (Ref. 358).
Infralittoral zone; lives on hard bottoms, (Ref. 772) in anfractuosities and excavations on hard funds, interstices between stones and rollers. Females always seen occupying anfractuosities of rocks or all other benthic niche. For nourishment, they use horns equipped to palpate ground and consume microorganisms or organic matter of various origins. Nutritive particle coated with mucus before being introduced (Ref. 358). Sex of the larvae swimmer not given of start: if one larva comes into contact with horn of female, it is introduced as food particle; inside body of this female, hormonal processes make larva evolve into nanifié male. If on the contrary it manages to take refuge in anfractuosities, larva evolves into female. This mode of development guarantees a balanced population (Ref. 358). Habitat: Anfractuosities and excavations on hard funds, interstices between the stones and rollers. Biology: at the Bonellia kind, the sexual dimorphism is very marked: males and females have an extremely different morphology. It is always the female of the species which one sees in nature, occupying an anfractuosities of the rock or all other benthic niche. To nourish themselves: Uses the horn equipped to palpate the ground and to consume of them the micro-organisms or the organic matter of various origins. Nutritive particles: Coated with mucus before being introduced. The disturbed animal retracts this body completely. The males: 0.1 to 0.3 cm length: they have neither horn nor intestine; female: only one can lodge some up to 85 (Ref. 358). Lives on hard bottoms in the infralittoral zone (Ref. 772).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
The sex of the larvae swimmer is not given of start: if one as of the these larvae comes into contact with the horn of a female, it will be introduced as well as a food particle; inside the body of this female, hormonal processes make evolve/move this larva in nanifié male. If on the contrary it manages to take refuge in an anfractuosities, the larva evolves/moves in female. This mode of development guarantees a balanced population (Ref. 358).
Göthel, H. 1992. (Ref. 358)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
statut CITES (Ref. 108899)
Not Evaluated
Not Evaluated
Menace pour l'homme
Utilisations par l'homme
| FishSource |
Outils
Sources Internet
Estimates based on models
Preferred temperature
(Ref.
115969): 7 - 15.3, mean 10.1 (based on 477 cells).
Vulnérabilité
Low vulnerability (10 of 100).
Catégorie de prix
Unknown.
