Predation on hard clam (Mercenaria mercenaria) populations

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dc.acquisition-srcen_US
dc.call-noAcc# 9028en_US
dc.contract-noen_US
dc.contributor.authorMacKenzie, C.L., Jr.en_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:36:31Z
dc.date.available2010-02-15T17:36:31Z
dc.date.issued1994en_US
dc.degreeen_US
dc.description8 p.en_US
dc.description-otheren_US
dc.description.abstractPredation on hard clams Mercenaria mercenaria) was examined in laboratory experiments and in wild populations. Increases in clam density following predator reduction was also examined. The principal predators of hard clams are gastropods and crabs, which take mostly small clams. In the laboratory, crabs consume clams rapidly. Wild populations of clams are most abundant in areas where either predation on clams smaller than about 15 to 20 mm determine the strength of years classes. As clams grow, they become less vulnerable to a succession of predators, first outgrowing mud crabs at a length if about 7 mm, rock crabs at about 15mm, oyster drills at about 20mm, and moon snails at about 50mm. Clam densities were seven and eight times as great in sections of shellfish beds where predators were reduced by precide applications compared with untreated sections of same beds.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/26112
dc.latitudeen_US
dc.locationGBIC Collectionen_US
dc.longitudeen_US
dc.notesen_US
dc.placeHighlands, New Jerseyen_US
dc.publisherNational Marine Fisheries Serviceen_US
dc.relation.ispartofseries9028.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectclam fisheriesen_US
dc.subjectliving resourcesen_US
dc.subjectmollusk fisheriesen_US
dc.titlePredation on hard clam (Mercenaria mercenaria) populationsen_US
dc.typeArticleen_US
dc.universityen_US
dc.vol-issueen_US

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