Bivalvia |
Carditida |
Astartidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; εύρος βάθους 6 - 270 m (Αναφ. 83435). Polar; 85°N - 34°N, 180°W - 180°E
Northern Pacific, Northern Atlantic and the Arctic.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ? range ? - ? cm Max length : 5.1 cm SHL αρσενικό/απροσδιόριστο; (Αναφ. 360); common length : 2.5 cm αρσενικό/απροσδιόριστο; (Αναφ. 360)
Shell: solid, moderately convex valves equivalved and almost equilateral, circular or oval in shape, umbones frequently eroded; thick yellowish periostracum in young individuals, darkish brown to blackish in adults; cream-colored shell; sculpture consists of incised concentric lines sometimes toward the umbo, slightly raised ribs; external ligament takes over half the area posterior to the umbones; heterodont hinge, two cardinal teeth on the right valve and three on the left; smooth outer valve margin; two equal muscle scars (dimyarian, isomyarian) joined by a continuous pallial line (integropaliiate) without a sinus; crossed-lamellae structure. Body: pair of gills each has two series of lamellae extensively fused by interlamellar junctions (eulamellibranch); moderately developed foot.
Maximum depth from Ref. 117961. It prefers sandy substrates and mixed sediments (Ref. 96078), but in the Baltic Sea it is found in muddy areas, with low temperatures and medium high salinity at depths deeper than 35 meters, compared to shallower areas (Ref. 95730). This bivalve is a suspension feeder (Ref. 3477). Surface deposit feeder (Ref. 66387).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | Larvae
Members of the class Bivalvia are mostly gonochoric, some are protandric hermaphrodites. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam.
MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php (Αναφ. 3477)
IUCN Red List Status
(Αναφ. 130435: Version 2025-1)
CITES status (Αναφ. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Εργαλεία
Περισσότερες πληροφορίες
Τροφική ΟικολογίαFood items (preys)
Σύσταση δίαιτας
Κατανάλωση τροφής
Θηρευτές
Life cycleΑναπαραγωγήΓεννητική ΩρίμανσηΓονιμότηταΓεννοβολίαEggsEgg developmentLarvae PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 0.1 - 12, mean 2.5 (based on 1889 cells).
Fishing Vulnerability
Moderate vulnerability (39 of 100).
Price category
Unknown.
