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Related to oyster drills: Urosalpinx cinerea
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This observation is consistent with a general reduction in activity of oyster predators, such as the oyster drill (Urosalpinx cinerea), during winter months (Stauber 1950), as well as prior research that identified little over-winter mortality of oysters in Delaware Bay (Powell & Ashton-Alcox 2013).
Fine structure and vital staining of osphradium of the southern oyster drill, Thais haemastoma canaliculata (Gray) (Prosobranchia: Muricidae).
army barge for harvesting shells and removing oyster drills from grounds.
Another method to control oyster drills was developed by the Milford Laboratory of the NMFS Northeast Fisheries Center.
Beyond the presence of an additional muricid gastropod in the lower Bay to compete with the native oyster drills (Urosalpinx cinerea, Eupleura caudata), rapa whelks are cause for concern ecologically because their prey field and foraging habitats change ontogenetically (Harding 2003, Harding et al.
Foraging ecology of the southern oyster drill Thais haemastoma (Gray): constraints on prey choice.
During the second growing season, June and July, samplings, oyster drills were constantly seen in association with the seed oysters and egg cases and drill holes were apparent.
During each boat trip, five beds were examined by swimming over each one for about 20 min, looking especially for the presence of starfish Aslerias forbesi (Desor, 1848), oyster drills, i.
Introduced parasites, protistans, diseases, and macrofauna including bivalves, crabs, and oyster drills have been associated with the transport of Ostrea lurida.
Coincident with the decline in oyster density at these reserves was an increase in the prevalence of Atlantic oyster drills (Ursosalpinx cinerea) and clionid boring sponges.
Potential alternative sources of oyster mortality were Atlantic oyster drills (Ursosalpinx cinerea), which were seen in high abundance on some reefs, and clionid boring sponges, as the sponges are now pervasive on and within the marl substrate and within oyster shells at the impacted sanctuaries (NC DMF and N.
In addition to disease, predation from mud crabs (Eurypanopeus depressus, Panopeus herbstii), blue crabs (Callinectes sapidus), stone crabs (Menippe adina), black drum (Pogonias cromis), and oyster drills (Stromonita haemastoma) is a significant source of mortality for Gulf Coast oysters.