Bivalvia | Ostreoida
Rosenberg, G. 2009. (Ref. 83435)
Size / Weight / Age
Max length : 7.8 cm DL male/unsexed; (Ref. 83435)
Sessile; depth range 1 - 270 m (Ref. 87801), usually 70 - 120 m (Ref. 114844)
Climate / Range
Subtropical; 26°S - 65°S, 110°W - 53°W
Southeast Pacific, Southwest Atlantic and Antarctic: Magellanic biogeographic province. In the Pacific from Puerto Montt to Strait of Magellan and Cape Horn (56Â°S) to the Atlantic northwards to Rio de la Plata estuary (35Â°S). Also from Palmer Archipelago, Antarctica and Easter Island. Introduced in the Mediterranean. Subtropical to polar.
The Patagonian scallop fishery of this species has been certified by the Marine Stewardship Council (http://www.msc.org/) as well-managed and sustainable (http://www.msc.org/html/content_1294.htm). This is an epifaunal species found at depths of 1 to 270 meters. Adults live on the bottom supported by their right valve while juveniles appear as epibionts of algae and other invertebrates. Single species found in shallow waters and forms large banks in deeper waters. Larvae are free-living (Ref. 87801). It is found in forests of Macrocystis pyrifera (Ref. 92889). 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 (Ref. 833).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
FAO(fisheries: production) | FisheriesWiki | Sea Around Us
Estimation of some characteristics with mathematical models