ĬITE Title : Post-interaction mortality determinations for sea turtles in US Northeast and Mid-Atlantic fishing gear, 2011-2015 Finally, the size selectivity of the new dredge does not differ substantially from the previous one for Atlantic surfclam, but there are some differences for small and large ocean quahog. The previous dredge required several hours of shore side labor to prepare, while the new dredge does not. The new dredge filters unwanted material better than the previous one and can be towed for longer, resulting in a more representative sample of the experimental area. Initial gear testing indicates that the new dredge will improve selectivity experiments. ![]() A new selectivity dredge was designed and built in 2014 with the intention of improving the quantity and quality of selectivity experiments typically conducted during survey operations. ![]() Small animals inform estimates of recruitment and are important indicators of stock health and productivity. The selectivity of the sampling gear used for the Northeast Fisheries Science Center's clam survey for ocean quahog (Arctica islandica) and Atlantic surfclam (Spisula solidissima) is of particular interest because it is used to infer the abundance of small animals that are not efficiently caught.
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