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.
Inducible defenses in the eastern oyster Crassostrea virginica Gmelin in response to the presence of the predatory oyster drill Urosalpinx cinerea
Say in Long Island Sound.
The exotic oyster drill Urosalpinx cinerea
(Say 1822) (Sorbeoconcha: Muricidae) and the native periwinkle Littorina spp.
Predation, due mainly to Atlantic oyster drills Urosalpinx cinerea
, and overgrowth of oysters caused a mortality of 72% in the oyster seed during the first growing season.
Significant embryonic growth after consumption of intracapsular fluid has also been reported for Urosalpinx cinerea
Concentration and preliminary characterization of a chemical attractant of the oyster drill Urosalpinx cinerea
venosa potentially complicates the ability of the native oyster drill, Urosalpinx cinerea
, to re-establish its former range within the Chesapeake Bay.
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.e., the Atlantic oyster drill Urosalpinx cinerea
(Say, 1822), the thick-lip drill Eupleurci caudata (Say, 1822), and silt accretions.
A significant development in choice apparatus occurred when Pratt (1974) designed a choice chamber to investigate the attraction of prey and the stimulus to attack in the predatory gastropod Urosalpinx cinerea
. His choice chamber featured two slightly inclined slopes draining centrally in a narrow rectangular chamber and allowed the test animal to be stimulated by two unmixed water bodies at the same time (Pratt, 1974).
The Eastern drill (Urosalpinx cinerea
) was introduced with C.
Ultrastructural analysis of dissolution of the shell of the bivalve Myrilus edulis by the accessory boring organ of the gastropod Urosalpinx cinerea
The American oyster drill, Urosalpinx cinerea
(Say, 1822), introduced to the Netherlands:-increased risks after ban on TBT?