Potamon potamios

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Potamon potamios
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Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Potamidae
Genus: Potamon
Species:
P. potamios
Binomial name
Potamon potamios
(Olivier, 1804)

Potamon potamios, the Levantine freshwater crab, is a semi-terrestrial crab occurring around the eastern Mediterranean, including many Mediterranean islands, [1] extending as far south and west as the Sinai Peninsula. [2]

Contents

Description

A young Levantine freshwater crab in captivity at the NHMC in Greece Potamon potamios 4787.jpg
A young Levantine freshwater crab in captivity at the NHMC in Greece

Levantine freshwater crabs have an average leg span of 10 to 15 centimeters (4 to 6 inches) and the males are typically larger than the females. Their carapace is slightly arched, smooth, and concave; and has a size 5 to 7 cm (2 to 3 in). Their two claws are large and unequal in size, and their first gonopod is conical or slender. [3]

Distribution and habitat

The Levantine freshwater crab can be found in Syria, Lebadon, Israel and Palestine, Cyprus, Jordan, southern Turkey, as well as the Sinai peninsula of Egypt and some islands in Greece; such as Crete, Karpathos, Naxos and more. It also occurs in some areas in Iraq near its border with Syria and in Saudi Arabia near its border with Jordan. [1] Its range lies within many ecoregions, like the Eastern Mediterranean conifer-broadleaf forests, the Aegean and Western Turkey sclerophyllous and mixed forests and the Cyprus Mediterranean forests. [4] This crab's habitat includes various environments, though it is usually found in streams, rivers and lakes. [1] It prefers areas with muddy substrates and rocks so it can dig borrows and hide. [3]

Behavior

A Levantine freshwater crab in a burrowing near the Jordan River Potamon potamios in burrowing.jpg
A Levantine freshwater crab in a burrowing near the Jordan River

The Levantine freshwater crab is a semi-terrestrial species that is very active both on land and in the water. They are not social and they exhibit aggressive and territorial behavior, especially during breeding season. [3] In this species, medium-sized individuals are nocturnal, whereas the larger ones are diurnal. [1] During the night, some males spread over the surrounding terrestrial habitats; straying up to 40 metres (130 ft) away from the water. Levantine freshwater crabs are also known for digging burrows in muddy surfaces. [3]

Diet

Levantine freshwater crabs are omnivorous and they actively prey on small invertebrates and sometimes frogs and fish, while they also scrap surfaces covered with algae and eat dead leaves and plants. Cannibalism is also present in this species in individuals that have a noticeable size difference. [3]

Related Research Articles

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The Levant is a term used to define the historical and geographical subregion that borders the Eastern Mediterranean sea to the west and core West Asia, or by the political term, Middle East to the east. In its narrowest sense, which is in use today in archaeology and other cultural contexts, it is equivalent to Cyprus and a stretch of land bordering the Mediterranean Sea in western Asia: i.e. the historical region of Syria, which includes present-day Israel, Jordan, Lebanon, Syria, the Palestinian territories and most of Turkey southwest of the middle Euphrates. Its overwhelming characteristic is that it represents the land bridge between Africa and Eurasia. In its widest historical sense, the Levant included all of the Eastern Mediterranean with its islands; that is, it included all of the countries along the Eastern Mediterranean shores, extending from Greece in Southern Europe to Egypt and Cyrenaica in Northern Africa.

The Global 200 is the list of ecoregions identified by the World Wide Fund for Nature (WWF), the global conservation organization, as priorities for conservation. According to WWF, an ecoregion is defined as a "relatively large unit of land or water containing a characteristic set of natural communities that share a large majority of their species dynamics, and environmental conditions". For example, based on their levels of endemism, Madagascar gets multiple listings, ancient Lake Baikal gets one, and the North American Great Lakes get none.

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<i>Potamon fluviatile</i> Species of crab

Potamon fluviatile is a freshwater crab found in or near wooded streams, rivers and lakes in Southern Europe. It is an omnivore with broad ecological tolerances, and adults typically reach 50 mm (2 in) in size during their 10–12 year lifespan. They inhabit burrows and are aggressive, apparently outcompeting native crayfish.

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<i>Potamonautes sidneyi</i> Species of crab

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<span class="mw-page-title-main">Freshwater crab</span> Common name for a non-marine crab

Around 1,300 species of freshwater crabs are distributed throughout the tropics and subtropics, divided among eight families. They show direct development and maternal care of a small number of offspring, in contrast to marine crabs, which release thousands of planktonic larvae. This limits the dispersal abilities of freshwater crabs, so they tend to be endemic to small areas. As a result, a large proportion are threatened with extinction.

<i>Seychellum</i> Genus of crabs

Seychellum alluaudi is a species of freshwater crab endemic to the Seychelles, and the only true freshwater crab in that country. It lives in rainforest streams on the archipelago's granitic high islands. Although it may be abundant, little is known about its biology. If its habitat were to decline in quality, S. alluaudi might become endangered, but it is currently listed as Vulnerable on the IUCN Red List.

<i>Epilobocera sinuatifrons</i> Species of crustacean

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<i>Potamon rhodium</i> Species of crab

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References

  1. 1 2 3 4 5 Cumberlidge, N. (2008). "Potamon potamios". IUCN Red List of Threatened Species . 2008: e.T135117A4061032. doi: 10.2305/IUCN.UK.2008.RLTS.T135117A4061032.en . Retrieved 12 November 2021.
  2. Neil Cumberlidge (2009). "Freshwater Crabs and Shrimps (Crustacea: Decapoda) of the Nile Basin". In Henri J. Dumont (ed.). The Nile: Origin, Environments, Limnology and Human Use. Monographiae Biologicae. Vol. 89. Springer. pp. 546–562. doi:10.1007/978-1-4020-9726-3_27. ISBN   978-1-4020-9725-6.
  3. 1 2 3 4 5 Michael (2023-10-26). "Potamon Potamios – Detailed Guide: Care, Diet, and Breeding". Shrimp and Snail Breeder. Retrieved 2024-09-27.
  4. "Ecoregions 2017 ©". ecoregions.appspot.com. Retrieved 2024-09-27.