File:Argopecten gibbus with encrusting barnacles (Atlantic calico scallop shell) (Sanibel Island, Florida, USA) 3 (49763502958).jpg
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| Description |
Argopecten gibbus (Linnaeus, 1767) - Atlantic calico scallop shell, modern (latest Holocene) Bivalves are bilaterally symmetrical molluscs having two calcareous, asymmetrical shells (valves) - they include the clams, oysters, and scallops. In most bivalves, the two shells are mirror images of each other (the major exception is the oysters). They occur in marine, estuarine, and freshwater environments. Bivalves are also known as pelecypods and lamellibranchiates. Bivalves are sessile, benthic organisms - they occur on or below substrates. Most of them are filter-feeders, using siphons to bring in water, filter the water for tiny particles of food, then expel the used water. The majority of bivalves are infaunal - they burrow into unlithified sediments. In hard substrate environments, some forms make borings, in which the bivalve lives. Some groups are hard substrate encrusters, using a mineral cement to attach to rocks, shells, or wood. The fossil record of bivalves is Cambrian to Recent. They are especially common in the post-Paleozoic fossil record. Scallops are distinctive bivalves with nearly symmetrical valves. The convexity and color of the two valves of an individual can vary dramatically in many species. The volcano-like structures on this scallop shell are striped acorn barnacles, Balanus amphitrite (Darwin, 1854). Classification of scallop: Animalia, Mollusca, Bivalvia, Pteriomorphia, Pectinoida, Pectinidae Classification of encrusting barnacles: Animalia, Arthropoda, Crustacea, Maxillopoda, Cirripedia, Sessilia, Balanidae Locality: Lighthouse Point beach, southern shore of the eastern tip of Sanibel Island, Gulf of Mexico coast of southern Florida, USA More info. at: <a href="https://en.wikipedia.org/wiki/Scallop" rel="noreferrer nofollow">en.wikipedia.org/wiki/Scallop</a> and <a href="https://en.wikipedia.org/wiki/Argopecten_gibbus" rel="noreferrer nofollow">en.wikipedia.org/wiki/Argopecten_gibbus</a> and <a href="https://en.wikipedia.org/wiki/Amphibalanus_amphitrite" rel="noreferrer nofollow">en.wikipedia.org/wiki/Amphibalanus_amphitrite</a> |
| Date | |
| Source | Argopecten gibbus with encrusting barnacles (Atlantic calico scallop shell) (Sanibel Island, Florida, USA) 3 |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49763502958. It was reviewed on 14 April 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 02:58, 14 April 2020 | | 1,733 × 1,518 (1.88 MB) | Poldavia (talk | contribs) | Transferred from Flickr via #flickr2commons |
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