Overview

Comprehensive Description

In washings of mussels and vestimentiferan worms. Observed swimming above clumps of animals at vents.
  • HESSLER R.R. (1984) J. Crustac. Biol. 4(4): 655-664.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Galapagos Spreading Center and East Pacific Rise: 21°N to 18°S.
  • HESSLER R.R. (1984) J. Crustac. Biol. 4(4): 655-664.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Physical Description

Morphology

Carapace ovoid, posterior edge emarginate, exposing at least part of pleonite one dorsally. Rostrum 0.4 times of carapace length, 3 time longer than wide. First thoracomere seen from carapace even dorsally, postero-lateral angles of pleonites 1-3 rounded, that of pleonite 4 pointed. Anal plates like equilateral triangles. Eyestalk boomerang shaped (see upper centre figure) and denticulate articulated to head without visual elements. Scale of the first antenna with the anterior margin densely clothed with setae ranging from stout and dentate to long and slender (see upper right figure).
  • HESSLER R.R. (1984) J. Crustac. Biol. 4(4): 655-664.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Size

Up to 10 mm.
  • HESSLER R.R. (1984) J. Crustac. Biol. 4(4): 655-664.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Type Information

Holotype for Dahlella caldariensis Hessler
Catalog Number: USNM 210827
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Locality: Galapagos Vents, Galapagos Islands, Ecuador, North Pacific Ocean
Depth (m): 2450 to 2450
Vessel: Alvin DSR/V
  • Holotype:
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Paratype for Dahlella caldariensis Hessler
Catalog Number: USNM 210828
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Locality: Galapagos Vents, Galapagos Islands, Ecuador, North Pacific Ocean
Depth (m): 2450 to 2450
Vessel: Alvin DSR/V
  • Paratype:
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Paratype for Dahlella caldariensis Hessler
Catalog Number: USNM 210829
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Locality: Galapagos Vents, Galapagos Islands, Ecuador, North Pacific Ocean
Depth (m): 2450 to 2450
Vessel: Alvin DSR/V
  • Paratype:
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Depth range based on 19 specimens in 1 taxon.
Water temperature and chemistry ranges based on 19 samples.

Environmental ranges
  Depth range (m): 2450 - 3050
  Temperature range (°C): 1.822 - 2.889
  Nitrate (umol/L): 21.028 - 41.112
  Salinity (PPS): 34.663 - 34.944
  Oxygen (ml/l): 2.461 - 5.742
  Phosphate (umol/l): 1.396 - 2.814
  Silicate (umol/l): 34.435 - 161.139

Graphical representation

Depth range (m): 2450 - 3050

Temperature range (°C): 1.822 - 2.889

Nitrate (umol/L): 21.028 - 41.112

Salinity (PPS): 34.663 - 34.944

Oxygen (ml/l): 2.461 - 5.742

Phosphate (umol/l): 1.396 - 2.814

Silicate (umol/l): 34.435 - 161.139
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Barcode data: Dahlella caldariensis

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There are 3 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.

ATTTTAGGAATATATTCTGCTATAKTGGGAACAGGATTA---TCTGTCTTAATTCGTGYAGAATTAGGACAACCAGGAAGGTTAATTAATGAT---GATCAAATCTATAATACCATCGTTACTATCCATGCYTTCATTATAATTTCTTCTATAGTGATACCTATCATAATTGGAGGATTCGGTAATTGATTAATCCCTCTTATA---CTCGGAGCCCCAGATATDGCTTTTCCCCGATTAAATAATTTATCTTTATGACTCCTCCCCTTTAGATTTGTC---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TTTATA---------------------------------------------------------------------------------------------------------ATT
-- end --

Download FASTA File
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Statistics of barcoding coverage: Dahlella caldariensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 2
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Wikipedia

Dahlella

Dahlella caldariensis is a species of leptostracan crustacean which lives on hydrothermal vents in the Pacific Ocean.

Contents

Description

Dahlella may reach a length of 8.1 mm (0.32 in) from the base of the rostrum to the end of the abdomen.[2] Much of the animal is covered by a large, hinged carapace. Dahlella can be distinguished from other animals in the same family by the presence of a row of denticles (small teeth) on the eyestalks, which it is believed are used to scrape surfaces for food.[3] A similar character is found in Paranebalia (Paranebaliidae), but the form of the eyestalk is very different in the two taxa.[3]

Distribution

D. caldariensis has been recorded from a small number of sites around hydrothermal vents in the eastern Pacific Ocean near the Galápagos Islands and on the East Pacific Rise.[4] It is one of the deepest-living species of Leptostraca, having been found at depths of over 2,300 m (7,500 ft).[5]

Etymology

The generic name Dahlella commemorates the biologist Erik Dahl of the University of Lund. The specific epithet comes from the Latin word caldaria meaning hot bath, and is a reference to the natural habitat of D. caldariensis.[6]

References

  1. ^ a b R. R. Hessler (1984). "Dahlella caldariensis new genus new species - a leptostracan (Crustacea, Malacostraca) from deep-sea hydrothermal vents". Journal of Crustacean Biology 4 (4): 665–664. JSTOR 1548079. 
  2. ^ "Dahlella caldariensis". Grzimek's Animal Life Encyclopedia. 2003. http://www.answers.com/topic/dahlella-caldariensis. 
  3. ^ a b Genefor K. Walker-Smith & Gary C. B. Poore (2001). "A phylogeny of the Leptostraca (Crustacea) with keys to families and genera" (PDF). Memoirs of Museum Victoria 58 (2): 383–410. http://museumvictoria.com.au/pages/4128/58_2_walker.pdf. 
  4. ^ Todd Haney. "Leptostraca Specimen Database Search". Natural History Museum of Los Angeles County. http://atiniui.nhm.org/peet/leptostraca/specimens/. 
  5. ^ Todd A. Haney, Robert R. Hessler & Joel W. Martin (2001). "Nebalia schizophthalma, a new species of leptostracan (Malacostraca) from deep waters off the east coast of the United States" (PDF). Journal of Crustacean Biology 21 (1): 192–201. DOI:10.1651/0278-0372(2001)021[0192:NSANSO]2.0.CO;2. JSTOR 1549768. http://atiniui.nhm.org/pdfs/4327/4327.pdf. 
  6. ^ Todd Haney. "Synonymy". Los Angeles PEET project on Leptostraca. Natural History Museum of Los Angeles County. http://crustacea.nhm.org/peet/leptostraca/synonymies.html. 
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!