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Dromia
''Dromia'' is a genus of crabs in the family Dromiidae. It contains 6 extant species: *'' Dromia bollorei'' Forest, 1974 *''Dromia dormia'' (Linnaeus, 1763) *'' Dromia erythropus'' (George Edwards, 1771) *'' Dromia marmorea'' Forest, 1974 *'' Dromia nodosa'' A. Milne-Edwards & Bouvier, 1898 *''Dromia personata'' (Linnaeus, 1758) Two further species are known only from fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...s. References Dromiacea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dromia Personata
''Dromia personata,'' also known as the sponge crab or sleepy crab, is a species of crab found in the North Sea, the Mediterranean Sea, and connecting parts of the northeastern Atlantic Ocean. Like most other epibenthic crustaceans, the biomass of this species is especially dense in the Mediterranean continental shelf. It mainly resides from the lower shore to a depth of 50 meters (164 ft), often in caves. Occasionally, they are found living in depths as low as 110 meters (360 ft). They serve as prey for octopus, starfish, and other fish. Their last two pairs of legs are positioned dorsally, and are used to hold a sponge in place as camouflage. Reproduction and development ''Dromia personata'' is a gonochoric species. Courtship prior to copulation is commonly practiced through visual, olfactory, or tactile means. Sperm can only be transferred directly from the male's gonopod into the ovigerous female after a molting period, when her exoskeleton has not harden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dromia Dormia
''Dromia dormia'', the sleepy sponge crab or common sponge crab, is the largest species of sponge crab. It grows to a carapace width of and lives in shallow waters across the Indo-Pacific region. Distribution ''Dromia dormia'' has a widespread distribution in the Indo-Pacific region. Its range extends from East Africa (including Madagascar, the Seychelles and Mauritius) and the Red Sea through the Malay Archipelago, south to Queensland ( Australia), north to China and Japan and as far east as Hawaii and French Polynesia. It is mostly found in shallow waters, with the deepest record being . Description ''Dromia dormia'' is the largest species in the family Dromiidae, at up to across the carapace for males, and up to for females. Behaviour Like other related crabs, ''D. dormia'' camouflages itself by carrying a sponge on its back, which it cuts to size with its claws, and then holds in place with its last two pairs of legs. Instead of a sponge, ''D. dormia'' has occasionally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dromia Nodosa
''Dromia'' is a genus of crabs in the family Dromiidae. It contains 6 extant species: *''Dromia bollorei'' Forest, 1974 *''Dromia dormia'' (Linnaeus, 1763) *''Dromia erythropus'' (George Edwards, 1771) *'' Dromia marmorea'' Forest, 1974 *'' Dromia nodosa'' A. Milne-Edwards & Bouvier, 1898 *''Dromia personata'' (Linnaeus, 1758) Two further species are known only from fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...s. References Dromiacea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dromia Erythropus
''Dromia'' is a genus of crabs in the family Dromiidae. It contains 6 extant species: *'' Dromia bollorei'' Forest, 1974 *''Dromia dormia'' (Linnaeus, 1763) *'' Dromia erythropus'' (George Edwards, 1771) *'' Dromia marmorea'' Forest, 1974 *'' Dromia nodosa'' A. Milne-Edwards & Bouvier, 1898 *''Dromia personata'' (Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, t ..., 10th edition of Systema Naturae, 1758) Two further species are known only from fossils. References Dromiacea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dromia Bollorei
''Dromia'' is a genus of crabs in the family Dromiidae. It contains 6 extant species: *'' Dromia bollorei'' Forest, 1974 *''Dromia dormia'' (Linnaeus, 1763) *''Dromia erythropus'' (George Edwards, 1771) *'' Dromia marmorea'' Forest, 1974 *'' Dromia nodosa'' A. Milne-Edwards & Bouvier, 1898 *''Dromia personata'' (Linnaeus, 1758) Two further species are known only from fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...s. References Dromiacea {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crab
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting " tail" ( abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the world's oceans, in freshwater, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers. They first appeared during the Jurassic Period. Description Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a pair of chelae (claws). Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span up to . Several other groups of crustaceans with similar appearances – such as king crabs and porcelain crabs – are not true crabs, but have evolved features similar to true crabs through a process known as carcinisation. Environment Crabs are found in all of the world's oceans, as well as i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dromiidae
Dromiidae is a family of crabs, often referred to as sponge crabs. They are small or medium-sized crabs which get their name from the ability to shape a living sponge into a portable shelter for themselves.Encarta Reference Library Premium 2005 DVD A sponge crab cuts out a fragment from a sponge and trims it to its own shape using its claws. The last two pairs of legs are shorter than other legs and bend upward over the crab's carapace, to hold the sponge in place. The sponge grows along with the crab, providing a consistent shelter. The family Dromiidae contains the following subfamilies and genera: ;Dromiinae De Haan, 1833 *'' Alainodromia'' McLay, 1998 *'' Ameridromia'' † Blow & Manning, 1996 *'' Ascidiophilus'' Richters, 1880 *'' Austrodromidia'' McLay, 1993 *'' Barnardomia'' McLay, 1993 *'' Conchoecetes'' Stimpson, 1858 *'' Costadromia'' † Feldman and Schweitzer, 2019 *'' Cryptodromia'' Stimpson, 1858 *'' Cryptodromiopsis'' Borradaile, 1903 *'' Desmodromia'' McLay, 200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decapoda
The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is estimated to contain nearly 15,000 species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3,000 species) and Anomura including hermit crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The earliest fossil decapod is the Devonian '' Palaeopalaemon''. Anatomy Decapods can have as many as 38 appendages, arranged in one pair per body segment. As the name Decapoda (from the Greek , ', "ten", and , '' -pod'', "foot") implies, ten of these appendages are considered legs. They are the pereiopods, found on the last five thoracic segments. In many decapods, one pair of these "legs" has enlarged pincers, called chelae, with the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raffles Bulletin Of Zoology
''The Raffles Bulletin of Zoology'' is a peer-reviewed open-access scientific journal published by the Lee Kong Chian Natural History Museum at the National University of Singapore. It covers the taxonomy, ecology, and conservation of Southeast Asian fauna Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is '' funga''. Flora, fauna, funga and other forms of life are collectively referred to as ''biota''. Zoo ....Supplements are published as and when funding permits and may cover topics that extend beyond the normal scope of the journal depending on the targets of the funding agency. It was established as the ''Bulletin of the Raffles Museum'' in 1928 and renamed ''Bulletin of the National Museum of Singapore'' in 1961, before obtaining its current title in 1971. See also * List of zoology journals References Zoology journals Biannual journals Open access journals English-langu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the abs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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