Mimachlamys asperrima
A scallop endemic to coastal Southern Australia.
Mimachlamys asperrima, known by common names including the austral scallop, doughboy, doughboy scallop, fan shell, or prickly scallop, is a species of scallop, a marine bivalve mollusc in the family Pectinidae. It is endemic to coastal Southern Australia and notable for its fan-shaped shell with broad ribs and variable exterior color ranging from yellow to light purple.
Quick Facts
- Taxon
- Mimachlamys asperrima
Facts from the source article.
Lore & Background
Mimachlamys asperrima has a shell which can reach an adult size of 11 centimetres (4.3 in). Like almost all scallops, the shell is fan-shaped and composed of two valves, each of which is convex and has broad ribs that radiate from the umbo, the rounded protuberance near the hinge. Beside the hinge are two irregular shelly flaps or auricles; the anterior one is normally much larger than the posterior one. The interior of each valve shows a central round scar, the attachment area for the single strong adductor muscle that closes the two valves. The background color of the exterior of the shell varies from yellow to light purple.
Like almost all bivalve species, this one is a filter feeder, sieving microscopic algae from water that passes through its gills. The species lives in crevices in reef and sand areas down to a depth of 30 metres (98 ft). It is endemic to coastal Southern Australia.
Reader's Guide
Mimachlamys asperrima is a species of scallop in the family Pectinidae, known by multiple common names including austral scallop, doughboy, doughboy scallop, fan shell, and prickly scallop. Its significance lies in its representation of typical scallop anatomy and ecology: a fan-shaped shell with two convex valves, broad ribs radiating from the umbo, two auricles beside the hinge (with the anterior one normally much larger), and a central adductor muscle scar. The species is a filter feeder, sieving microscopic algae through its gills, and inhabits crevices in reef and sand areas down to 30 metres depth. Its distribution is restricted to coastal Southern Australia, where it is endemic. The shell's exterior color varies from yellow to light purple, and adults reach 11 centimetres. The species is documented in the context of scallop biology and aquaculture potential, as referenced in external literature.
Did You Know?
- Mimachlamys asperrima can reach an adult shell size of 11 centimetres (4.3 in).
- It is a filter feeder, sieving microscopic algae from water passing through its gills.
- This species is endemic to coastal Southern Australia.
Frequently Asked Questions
What is Mimachlamys asperrima?
It is a species of scallop in the family Pectinidae, found exclusively along the coastlines of southern Australia. You may also encounter it under common names such as the austral scallop, doughboy scallop, fan shell, or prickly scallop.
Where does Mimachlamys asperrima live?
This bivalve is restricted to coastal waters of Southern Australia, where it tucks itself into crevices within reef structures or sandy substrates. It can be encountered at depths reaching up to roughly 30 metres.
How large does Mimachlamys asperrima grow?
Adults reach a maximum shell length of about 11 centimetres, or roughly 4.3 inches.
What does Mimachlamys asperrima feed on?
Like other scallops, it is a filter feeder, drawing suspended particles and plankton from the surrounding water column to sustain itself.
What does the Mimachlamys asperrima shell look like?
The shell has a distinctive fan shape crossed by broad, prominent ribs. Its exterior coloration is notably variable, shifting anywhere from yellowish tones to a light purple.
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