Eurypanopeus depressus

Last updated

Contents

Eurypanopeus depressus
Eurypanopeus depressus (YPM IZ 069068).jpeg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Panopeidae
Genus: Eurypanopeus
Species:
E. depressus
Binomial name
Eurypanopeus depressus
(Smith 1869) [1]
Synonyms [1]
  • Panopeus depressus Smith, 1869

Eurypanopeus depressus, the flatback mud crab or depressed mud crab, is a true crab belonging to the infraorder Brachyura and the family Panopeidae. [2] It is native to the western Atlantic Ocean and is often found in estuaries and lagoons, commonly living in close association with oysters.

Description

The flatback mud crab is a small species of crab up to 13 mm (0.5 in) long with a noticeably flattened, oval carapace, with four blunt teeth on either side. In colour, this crab is dark olive brown or olive grey, often somewhat mottled, with dark brown limbs. One chela (claw) is much bigger than the other and the underside of the body and the limbs are a pale colour. [2]

Distribution and habitat

The flatback mud crab is found in the sub-tropical and temperate waters of the western Atlantic Ocean. Its range extends from Massachusetts to Florida and Texas, the Caribbean Sea, Bermuda, the Dutch West Indies and Uruguay. It occurs in the intertidal zone and the shallow sub-littoral zone, down to depths of about 27 m (90 ft). It is tolerant of water of low salinities and occurs in estuaries. It is common in the Indian River Lagoon. It is generally associated with oysters, hiding between them and inside their valves. [2]

Ecology

This crab has an omnivorous diet which includes algae, detritus, oyster spats, polychaete worms, sponges, amphipods and other small crustaceans. When fully submerged it moves about on the substrate but when exposed by the retreating tide it conceals itself, being particularly associated with beds of the eastern oyster (Crassostrea virginica). It cannot withstand desiccation so it chooses moist places in which to hide. It shares its habitat with the black-fingered mud crab (Panopeus herbstii). [2]

The flatback mud crab is sometimes parasitised by Loxothylacus panopaei , a species of parasitic barnacle that develops inside a host crab, extruding a brood sac that the crab then carries under its abdomen and treats as it would its own eggs. [3]

Related Research Articles

<span class="mw-page-title-main">Cheloniidae</span> Family of turtles

Cheloniidae is a family of typically large marine turtles that are characterised by their common traits such as, having a flat streamlined wide and rounded shell and almost paddle-like flippers for their forelimbs. They are the only sea turtles to have stronger front limbs than back limbs. The six species that make up this family are: the green sea turtle, loggerhead sea turtle, olive ridley sea turtle, hawksbill sea turtle, flatback sea turtle and the Kemp's ridley sea turtle.

<span class="mw-page-title-main">Raritan Bay</span> Bay in the United States

Raritan Bay is a bay located at the southern portion of Lower New York Bay between the U.S. states of New York and New Jersey and is part of the New York Bight. The bay is bounded on the northwest by New York's Staten Island, on the west by Perth Amboy, New Jersey, on the south by the Raritan Bayshore communities in the New Jersey counties of Middlesex and Monmouth, and on the east by Sandy Hook Bay. The bay is named after the Raritans, a branch of the Lenape tribe who lived in the vicinity of the bay and its river for thousands of years, prior to the arrival of Dutch and English colonists in the 17th century.

<i>Cancer pagurus</i> Species of crustacean

Cancer pagurus, commonly known as the edible crab or brown crab, is a species of crab found in the North Sea, North Atlantic Ocean, and perhaps the Mediterranean Sea. It is a robust crab of a reddish-brown colour, having an oval carapace with a characteristic "pie crust" edge and black tips to the claws. A mature adult may have a carapace width up to 25 centimetres and weigh up to 3 kilograms. C. pagurus is a nocturnal predator, targeting a range of molluscs and crustaceans. It is the subject of the largest crab fishery in Western Europe, centred on the coasts of the British Isles, with more than 60,000 tonnes caught annually.

<i>Scylla serrata</i> Species of crab

Scylla serrata is an ecologically important species of crab found in the estuaries and mangroves of Africa, Australia, and Asia. In their most common forms, their shell colours vary from a deep, mottled green to very dark brown.

<span class="mw-page-title-main">Indian River Lagoon</span> Three lagoons on the Atlantic Coast of Florida, United States

The Indian River Lagoon is a grouping of three lagoons: the Mosquito Lagoon, the Banana River, and the Indian River, on the Atlantic Coast of Florida; one of the most biodiverse estuaries in the Northern Hemisphere and is home to more than 4,300 species of plants and animals.

<span class="mw-page-title-main">Flatback sea turtle</span> Species of turtle

The Australian flatback sea turtle is a species of sea turtle in the family Cheloniidae. The species is endemic to the sandy beaches and shallow coastal waters of the Australian continental shelf. This turtle gets its common name from the fact that its shell has a flattened or lower dome than the other sea turtles. It can be olive green to grey with a cream underside. It averages from 76 to 96 cm in carapace length and can weigh from 70 to 90 kg. The hatchlings, when emerging from nests, are larger than other sea turtle hatchlings when they hatch.

<span class="mw-page-title-main">Yaquina Bay</span> Small bay partially within Newport, Oregon, United States

Yaquina Bay is a coastal estuarine community found in Newport, Oregon. Yaquina Bay is a semi-enclosed body of water, approximately 8 km2 (3.2 mi2) in area, with free connection to the Pacific Ocean, but also diluted with freshwater from the Yaquina River land drainage. The Bay is traversed by the Yaquina Bay Bridge.

<span class="mw-page-title-main">White grouper</span> Species of fish

The white grouper is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. The white grouper is found in the subtropical eastern Atlantic Ocean and the southern Mediterranean Sea.

<span class="mw-page-title-main">Inshore lizardfish</span> Species of fish

The inshore lizardfish is a member of the family Synodontidae found in the western Atlantic.

<span class="mw-page-title-main">Patchogue Bay</span> Bay on Long Island, New York

Patchogue Bay is a lagoon on the south-central shores of Long Island in the U.S. state of New York.

<i>Cerithideopsis scalariformis</i> Species of gastropod

Cerithideopsis scalariformis, commonly known as the ladder hornsnail, is a species of sea snail, a marine gastropod mollusk in the family Potamididae. This amphibious species occurs in the western Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico. The maximum recorded shell length is 33 mm (1.3 in).

<i>Zebrida adamsii</i> Species of crab

Zebrida adamsii is a distinctively striped species of crab that lives in association with a sea urchin in the Indo-Pacific region. It is cryptically coloured with vertical stripes and has special adaptations to its legs to enable it to cling to its host's spines.

<span class="mw-page-title-main">Panopeidae</span> Family of crabs

The Panopeidae are a family containing 26 genera of morphologically similar crabs, often known as "mud crabs". Their centers of diversity are the Atlantic Ocean and eastern Pacific Ocean.

<i>Dyspanopeus sayi</i> Species of crab

Dyspanopeus sayi is a species of mud crab that is native to the Atlantic coast of North America. It has also become established outside its native range, living in Swansea Docks since 1960, the Mediterranean Sea since the 1970s, the North Sea since 2007 and the Black Sea since 2010. It can reach a carapace width of 20 mm (0.8 in), and has black tips to its unequal claws. It feeds on bivalves and barnacles, and is in turn eaten by predators including the Atlantic blue crab, Callinectes sapidus. Eggs are produced from spring to autumn, the offspring reach sexual maturity the following summer, and individuals can live for up to two years. The closest relative of D. sayi is D. texanus, which lives in the Gulf of Mexico; the two species differ in subtle features of the genitalia and the last pair of walking legs.

<span class="mw-page-title-main">Thinstripe hermit crab</span> Species of crustacean

The thinstripe hermit crab, Clibanarius vittatus, is a species of hermit crab in the family Diogenidae. It is found in the Caribbean Sea, the Gulf of Mexico and the western Atlantic Ocean.

<i>Ostrea equestris</i> Species of bivalve

Ostrea equestris, commonly known as the crested oyster or horse oyster, is a species of bivalve mollusc in the family Ostreidae. It can be found along the Atlantic coast of North and South America, ranging from Virginia to Patagonia.

<span class="mw-page-title-main">Oyster reef</span> Rock-like reefs, composed of dense aggregations of oysters

The term oyster reef refers to dense aggregations of oysters that form large colonial communities. Because oyster larvae need to settle on hard substrates, new oyster reefs may form on stone or other hard marine debris. Eventually the oyster reef will propagate by spat settling on the shells of older or nonliving oysters. The dense aggregations of oysters are often referred to as an oyster reef, oyster bed, oyster bank, oyster bottom, or oyster bar interchangeably. These terms are not well defined and often regionally restricted.

<i>Loxothylacus panopaei</i> Species of barnacle

Loxothylacus panopaei is a species of barnacle in the family Sacculinidae. It is native to the Gulf of Mexico and the Caribbean Sea. It is a parasitic castrator of small mud crabs in the family Panopeidae, mostly in the Gulf of Mexico, the Caribbean Sea and the eastern Atlantic Ocean.

Panopeus lacustris, the knot-fingered mud crab, is a true crab belonging to the infraorder Brachyura. It can be distinguished from related species by its exceptionally broad and knobbly main chela (claw).

<i>Paguristes puncticeps</i> Species of crustacean

Paguristes puncticeps is a hermit crab, in the family Diogenidae. It is found in shallow waters in the tropical western Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico. Like other hermit crabs, it lives inside an empty mollusc shell, which it changes periodically as it grows.

References

  1. 1 2 Davie, Peter (2010). "Eurypanopeus depressus (Smith, 1869)". WoRMS. World Register of Marine Species . Retrieved 9 December 2017.
  2. 1 2 3 4 Puglisi, Melany P. (1 October 2008). "Eurypanopeus depressus S Smith, 1869". Indian River Lagoon Species Inventory. Smithsonian Marine Station at Fort Pierce. Retrieved 9 December 2017.
  3. Fofonoff, P.W.; Ruiz, G.M.; Steves, B.; Simkanin, C.; Carlton, J.T. (2017). "Loxothylacus panopaei". NEMESIS. Retrieved 7 December 2017.