Emerita analoga (Stimpson, ). Common name(s): Pacific sand crab, sand crab, mole crab. Synonyms: Hippa analoga, 3 cm preserved female. Scientific Name. Emerita analoga. Animal Type. Invertebrates. Diet. plankton, mostly dinoflagellates. Size. females: to 2 inches ( mm); males inches. Pacific Sand Crab (Mole Crab). Emerita analoga. Decapoda: Hippidae. Laguna Beach, Orange County, CA. 06/11/ © Peter J. Bryant. Back to Natural History.
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Because the fisheries throw back hard-shelled crabs, sand crab populations haven’t been affected by bait fishing. Sand crabs are a major food source for shore birds and for some kinds of fish. Emerita Female Emerita analoga Scientific classification Kingdom: As the wave retreats it extends its long, feathery antennae and captures plankton and ekerita from the retreating wave.
The sand crab has been evaluated as an indicator species for monitoring the level of domoic acid -synthesizing diatoms Pseudo-nitzschia spp. It has five pairs of legs and three pairs of pleopods.
WoRMS – World Register of Marine Species – Emerita analoga (Stimpson, )
I am quick to burrow to evade birds Sandpipers, scooters and plovers and fish surfperch, corbina emeeita small […] Share this: In other projects Wikimedia Commons. Soft-shelled Emerita are kept also as bait by commercial fisheries.
Emerita analoga Stimpson This Pacific Mole Crab sand crab is female based on the bright orange egg sac pictured here. When the crab is covered by a wave, the antennae are extended out over the sand to collect food.
The species primarily inhabits beaches with clean, pebble and stone-free sand. To feed, the crabs burrow backward into the sand and face seaward, with only their eyes and first antennae showing. The abdomen with its elongated telson photo is generally held reflexed underneath the thoraxbut is extended for rapid digging into the sand movie.
Archived from the original PDF on A female may produce as many as 45, eggs. If dislodged while feeding, sand anlaoga a manner most unusual for crustaceans—can swim or tread water by beating their back legs. Here only one is being retracted. World Register of Marine Species. Retrieved from ” https: Views Read Edit View history. Mating occurs mostly in spring and summer. Sand crabs feed in the swash zone—an area of breaking waves.
Week # 5: Pacific Sand Crab, Emerita analoga
Migrate up and down with the tides on sandy, wave-swept beaches. Most individual species, however, are restricted to smaller areas, and their ranges rarely overlap. She is carrying analga batch of orange eggs on her pleopods underneath the telson.
The female is nearly twice as large as the male and can often be identified by the orange egg mass carried under the telson. Between Pacific Tides 5th analogaa. Click Here for a movie of a 1.