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Food habits and feeding behavior of the cownose ray, Rhinoptera bonasus, in lower Chesapeake Bay






Estuaries, 83: 305-310

Food habits and feeding behavior of the cownose ray, Rhinoptera bonasus, in lower Chesapeake Bay

The most important food item of the cownose ray, Rhinoptera bonasus, in the Virginian tributaries of lower Chesapeake Bay is the soft shell clam, Mya arenaria. The Baltic macoma, Macoma balthica, ranks a distant second. Adult rays feed on deep burrowing mollusks, juveniles on shallow- or non-burrowing bivalves. Foraging schools of rays invade tidal flats during the flood tide. Stirring motions of the pectoral fins combined with suction from the expansive orobranchial chamber are probably used to excavate deep burrowing bivalves.


Accession: 021054766

DOI: 10.2307/1351491



Related references

Smith J.W.; Merriner J.V., 1985: Food habits and feeding behavior of the cownose ray rhinoptera bonasus in lower chesapeake bay usa. The most important food item of the cownose ray, Rhinoptera bonasus, in the Virginian tributaries of lower Chesapeake Bay is the soft shell clam, Mya arenaria. The Baltic macoma, Macoma balthica, ranks a distant second. Adult rays feed on deep bur...

Blaylock, Robert A., 1993: Distribution and abundance of the cownose ray, Rhinoptera bonasus, in Lower Chesapeake Bay. Aerial surveys were conducted in the lower Chesapeake Bay during 1986-1989 to estimate abundance and examine the distribution of the cownose ray, Rhinoptera bonasus, during its seasonal residence, May-October. Most of the survey effort was concent...

Blaylock R.A., 1989: A massive school of cownose rays rhinoptera bonasus rhinopteridae in lower chesapeake bay virginia usa. Copeia (3): 744-748

Blaylock, Robert A., 1989: A massive school of cownose rays, Rhinoptera bonasus (Rhinopteridae), in lower Chesapeake Bay, Virginia. Copeia(3): 4-8

Joseph, E.B., 1961: An albino cownose ray, Rhinoptera bonasus (Mitchill) from. Chesapeake Bay. Copeia: 482-483

Smith, JW.; Merriner, JV., 1987: Age and growth, movements and distribution of the cownose ray, Rhinoptera bonasus, in Chesapeake Bay. Ages were estimated for 115 of 899 cownose rays, Rhinoptera bonasus, collected primarily from commercial fishing gear, in lower Chesapeake Bay and vicinity from May through October, 1976-78. Age determinations were made using sectioned vertebral c...

Smith, JW.; Merriner, JV., 1986: Observations on the reproductive biology of the cownose ray, Rhinoptera bonasus, in Chesapeake Bay. U S Fish and Wildlife Service Fishery Bulletin, 844: 871-877

Smith J.W.; Merriner J.V., 1986: Observations on the reproductive biology of the cownose ray rhinoptera bonasus in chesapeake bay usa. Cownose rays, Rhinoptera bonasus, are abundant in Chesapeake Bay during summer. We made observations on the reproductive biology of specimens collected primarily from commercial pound nets and haul seines from May through October 1976-78. Clasper...

Smith J.W.; Merriner J.V., 1987: Age and growth movements and distribution of the cownose ray rhinoptera bonasus in chesapeake bay usa. Ages were estimated for 115 of 899 cownose rays, Rhinoptera bonasus, collected primarily from commercial fishing gear, in lower Chesapeake Bay and vicinity from May through October, 1976-78. Age determinations were made using sectioned vertebral c...

Robert J.Orth, 1975: Destruction of eelgrass zostera marina by the cownose ray rhinoptera bonasus in the chesapeake bay. Chesapeake Science 16(3): 205-208