The abundance of the predatory gastropod, the Far East dogwhelk Nucella heyseana in the Vostok Bay of the Sea of Japan was assessed by applying the mark and recapture technique with reverse sampling. It was shown that assessment of mollusk abundance using this approach did not differ significantly from that resulting from the frame technique. It was determined that the number of the dogwhelks decreased in recent years in the surveyed area. In implementing long-term research, including the seasonal dynamics of the number of N. heyseana and other mollusk species similar to it in their biology and behavior, we suggest applying, concurrently with the mark and recapture technique, other methods, enabling one to obtain more adequate figures of their numbers in the cold season.
Russian Journal of Marine Biology – Springer Journals
Published: May 10, 2009
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