Atlantic calico scallop
name = Atlantic calico scallop
image_width = 250px
image_caption = Atlantic callico scallop
genus = "
species = "A. gibbus"
binomial = "Argopectin gibbus"
binomial_authority = (
The Atlantic calico scallop, "Argopectin gibbus", is a medium-sized edible saltwater clam, specifically a scallop, a marine
It grows up to three inches in maximum width, and is similar in shape and sculpturing to the
Atlantic bay scallop. Both valves on the scallopare cupped. The shell near the hinge is extended into "ears", as is the case in all scallops. The shell of the Atlantic calico scallop has about twenty radial ribs, which are sometimes roughened by growth lines.
The exterior coloration of the upper (left) valve is dark yellow or pink, with striking blotches of red which sometimes form stripes. The lower (right) valve of this scallop is whitish with small reddish or purple spots. It has a white interior, often with brown patches on the "ears" and top edge.
The lively outer coloration of the shell of this species is what gave rise to its popular name: in the USA, "calico" was for many years an inexpensive but colorful fabic printed with small flower patterns.
The Atlantic calico scallop lives in the ocean (it is not found in bays) east of
Cape Lookoutand southwest of Beaufort Inletand lives in up to 100-foot depths. The shells are commonly found washed up on sound and ocean beaches.
This species ranges from
Delawareto Braziland is occasionally fished commercially as well as being popular among tourists.
Valve color and shell morphometry distinguish calico scallops from related species. The Atlantic calico is distinguished by the yellowish to white coloration and splotchy patches of bright red, maroon, or lavender. It is slightly convex in the left (upper) valve (Broom 1976).
Two other scallops are documented to occur in the
Indian River Lagoonand are similar in size and shape. One is the Bay scallop, ( Argopecten irradians), which generally has a uniform gray to gray-brown coloration with distinct convexity of the right (lower) valve. The other is the Rough scallop, ( Aequipecten muscosus), which may also be mistaken for the Atlantic calico scallop. The rough scallop however has unequal "ears" and has sharp scales on the lower surface of the ribs. It also has coloration which ranges into shades of yellow and brown.
* [http://www.marine.usf.edu/pjocean/packets/sp98/scallop_1.pdf The superfamily Pectinacea and scallops]
* [http://www.edwardtbabinski.us/beach_kids/sea_shells/scallop/ Atlantic Calico Scallop] and [http://www.ncseagrant.org/ NC Sea Grant]
* [http://www.sms.si.edu/IRLSpec/Argope_gibbus.htm Argopecten gibbus]
* [http://links.jstor.org/sici?sici=0078-8597(196909)3%3Ci%3ATEOTAG%3E2.0.CO%3B2-7 The Evolution of the Argopecten gibbus Stock (Mollusca: Bivalvia), with Emphasis on the Tertiary and Quaternary Species of Eastern North America]
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