Ecology

Habitat

Known from seamounts and knolls
  • Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Depth range based on 21587 specimens in 15 taxa.
Water temperature and chemistry ranges based on 9610 samples.

Environmental ranges
  Depth range (m): -9 - 80000
  Temperature range (°C): 1.894 - 24.323
  Nitrate (umol/L): 0.289 - 30.351
  Salinity (PPS): 31.035 - 36.580
  Oxygen (ml/l): 2.565 - 7.523
  Phosphate (umol/l): 0.100 - 2.545
  Silicate (umol/l): 0.756 - 51.234

Graphical representation

Depth range (m): -9 - 80000

Temperature range (°C): 1.894 - 24.323

Nitrate (umol/L): 0.289 - 30.351

Salinity (PPS): 31.035 - 36.580

Oxygen (ml/l): 2.565 - 7.523

Phosphate (umol/l): 0.100 - 2.545

Silicate (umol/l): 0.756 - 51.234
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Associations

Known predators

  • R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 272 (1947).
  • R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 278 (1947).
  • R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 287 (1947).
  • J. A. Kitching and F. J. Ebling, Ecological studies at Lough Ine, Adv. Ecol. Res. 4:197-291, from p. 288 (1967).
  • Link J (2002) Does food web theory work for marine ecosystems? Mar Ecol Prog Ser 230:1–9
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© SPIRE project

Source: SPIRE

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Known prey organisms

Cancer (Cancer crabs) preys on:
Paracentrotus
Gibbula eineraria
detritus
Chalina
Mytilus
Sertularia
Abietinaria
Metridium
Lichenophora
Balanus
Clava
Obelia
Spirorbis
Gammarus
Orchestia
Lumbrinereis
Clymenella
Talorchestia
Solemya
Ensis
Macoma
Onoba
Littorina littorea
Crago
Cerebratulus
Nereis
Glycera
Polinices
Nassarius
Anurida
Gammaridae
Caprellidae
Isopoda
Stomatopoda
Polychaeta
Ostreoida
Bivalvia
Gastropoda

Based on studies in:
Ireland (River)
USA: Massachusetts, Cape Ann (Marine, Sublittoral)
USA, Northeastern US contintental shelf (Coastal)

This list may not be complete but is based on published studies.
  • R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 272 (1947).
  • R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 278 (1947).
  • R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 284 (1947).
  • R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 287 (1947).
  • J. A. Kitching and F. J. Ebling, Ecological studies at Lough Ine, Adv. Ecol. Res. 4:197-291, from p. 288 (1967).
  • Link J (2002) Does food web theory work for marine ecosystems? Mar Ecol Prog Ser 230:1–9
Creative Commons Attribution 3.0 (CC BY 3.0)

© SPIRE project

Source: SPIRE

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:212Public Records:124
Specimens with Sequences:185Public Species:12
Specimens with Barcodes:177Public BINs:14
Species:12         
Species With Barcodes:12         
          
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Cancer

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Cancer (genus)

Cancer is a genus of marine crabs in the family Cancridae. It includes 8 extant species and 3 extinct species, including familiar crabs of the littoral zone, such as the European edible crab (Cancer pagurus), the Jonah crab (Cancer borealis) and the red rock crab (Cancer productus). It is thought to have evolved from related genera in the Pacific Ocean in the Miocene.

Description[edit]

The species placed in the genus Cancer are united by the presence of a single posterolateral spine (on the edge of the carapace, towards the rear), anterolateral spines with deep fissures (on the carapace edge, towards the front), and a short extension of the carapace forward between the eyes.[2] Their claws are typically short, with grainy or smooth, rather than spiny, keels.[2] The carapace is typically oval, being 58%–66% as long as wide, and the eyes separated by 22%–29% of the carapace width.[2]

Species[edit]

The genus Cancer, as currently circumscribed, contains eight extant species:[1][3]

Three fossil species are also included:[2]

As their generic delimitation was based on characters of the dorsal carapace, Schweitzer and Feldmann (2000) were unable to confirm the placement of Cancer tomowoi in the genus, since it is known only from parts of the sternum and the legs.[2] Other species until recently included in the genus Cancer have since been transferred to other genera, such as Glebocarcinus, Metacarcinus and Romaleon.[1]

Taxonomic history[edit]

When zoological nomenclature was first standardised by Carl Linnaeus in the 1758 10th edition of Systema Naturae, the genus Cancer included almost all crustaceans, including all the crabs.[3][4] Linnaeus' cumbersome genus was soon divided into more meaningful units, and Cancer had been restricted to one group of true crabs by the time of Pierre André Latreille's 1802 work Histoire naturelle, générale et particulière des Crustacés et des Insectes ("Natural history in general, and specifically that of crustaceans and insects").[3] Latreille designated C. pagurus to be the type species in 1817.[1]

In 1975, J. Dale Nations divided the genus Cancer into four subgenera: Cancer (Cancer), Cancer (Glebocarcinus), Cancer (Metacarcinus) and Cancer (Romaleon).[3][5] Each of these is now treated as a separate genus, as is the genus Platepistoma, erected by Mary J. Rathbun and resurrected in 1991.[3] Since that time, further genera have been described to accommodate species previously included in Cancer, and the genus Cancer now contains only eight extant species.[3]

Evolutionary history[edit]

The earliest fossils that can be confidently ascribed to the genus Cancer are those of C. fujinaensis from the Japanese Miocene.[2] The genus is therefore thought to have evolved in the northern Pacific Ocean, perhaps during the Miocene, and have spread across that ocean and into the Atlantic Ocean by the Pliocene or Pleistocene, having crossed the equator and the Straits of Panama.[2]

References[edit]

  1. ^ a b c d P. K. L. Ng, D. Guinot & P. J. F. Davie (2008). "Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world". Raffles Bulletin of Zoology 17: 1–286. 
  2. ^ a b c d e f g Carrie E. Schweitzer & Rodney M. Feldmann (2000). "Re-evaluation of the Cancridae Latreille, 1802 (Decapoda: Brachyura) including three new genera and three new species". Contributions to Zoology 69 (4): 223–250.  Also available as PDF.
  3. ^ a b c d e f Frederick R. Schram & Peter K. L. Ng (2012). "What is Cancer?". Journal of Crustacean Biology 32 (4): 665–672. doi:10.1163/193724012X640650. 
  4. ^ Geoff Boxshall (2007). Crustacean classification: on-going controversies and unresolved problems (PDF excerpt). In Z.-Q. Zhang & W. A. Shear. "Linnaeus Tercentenary: Progress in Invertebrate Taxonomy". Zootaxa 1668: 313–325. 
  5. ^ J. Dale Nations (1975). "The genus Cancer (Crustacea: Bachyura): systematics, biogeography, and fossil record" (PDF). Natural History Museum of Los Angeles County Science Bulletin 23: 1–104. 
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