Documentation of Annual Growth Lines in Ocean Quahogs, Arctica Islandica Linne

• Main Authors: Ropes, John W., Jones, Douglas S., Murawski, Steven A., Serchuk, Fredric M., Jearld, Ambrose, Jr
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Digital Commons @ University of South Florida 1984
• Subjects: Life Sciences; Long Island; Arctica islandica
• Online Access: https://digitalcommons.usf.edu/msc_facpub/2170; https://spo.nmfs.noaa.gov/content/documentation-annual-growth-lines-ocean-quahogs-arctica-islandica-linne

About 42.000 ocean quahogs,Arctica islandica Linne. were marked and released at a deep (53 m) oceanic site off Long Island, New York, in 1978. Shells of live specimens recovered 1 and 2 years later were radially sectioned, polished. and etched for preparation of acetate peels and examination by opticalmicroscopy ormicroprojection; selected specimens were similarly prepared for examination by scanning electron microscopy. Specific growth line and growth increment microstructures are described and photographed. An annual periodicity ofmicrost.ructure ia documented. providing a basisfor accurate age analyses ofthis commercially important species.