Ecology

Habitat

Depth range based on 146 specimens in 14 taxa.

Environmental ranges
  Depth range (m): 0 - 15.2

Graphical representation

Depth range (m): 0 - 15.2
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Associations

Animal / parasite / endoparasite
cercaria of Crepidostomum faronis endoparasitises body of Pisidium

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Known prey organisms

Pisidium (Pisidium sp.) preys on:
bottom organic matter
benthic macroalgae
detritus
fine particulate organic matter
algae
Bacillariophyceae

Based on studies in:
Finland (Lake or pond, Pelagic)
UK: Yorkshire, Aire, Nidd & Wharfe Rivers (River)
England: River Medway (River)

This list may not be complete but is based on published studies.
  • K. Aulio, K. Jumppanen, H. Molsa, J. Nevalainen, M. Rajasilta, I. Vuorinen, Litoraalin merkitys Pyhajarven kalatuotannolle, Sakylan Pyhajarven Tila Ja Biologinen Tuotanto (Lounais-Suomen Vesiensuojeluyhdistys R. Y., Turku, Finland, 1981) 47:173-176.
  • E. Percival and H. Whitehead, 1929. A quantitative study of the fauna of some types of stream-bed. J. Ecol. 17:282-314, from p. 311 & overleaf.
  • J. Sarvala, Paarjarven energiatalous, Luonnon Tutkija 78(4-5):181-190, from p. 184 (1974).
  • A. G. Hildrew, C. R. Townsend and A. Hasham, 1985. The predatory Chironomidae of an iron-rich stream: feeding ecology and food web structure. Ecol. Entomol. 10:403-413, from p. 412.
  • J. Sarvala, Paarjarven energiatalous, Luonnon Tutkija 78:181-190, from p. 185.
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Known predators

Pisidium (Pisidium sp.) is prey of:
Gymnocephalus cernus
Coregonus lavaretus
Rutilus rutilus
Perca fluviatilis
Glossosiphonia complanata

Based on studies in:
Finland (Lake or pond, Pelagic)
UK: Yorkshire, Aire, Nidd & Wharfe Rivers (River)

This list may not be complete but is based on published studies.
  • K. Aulio, K. Jumppanen, H. Molsa, J. Nevalainen, M. Rajasilta, I. Vuorinen, Litoraalin merkitys Pyhajarven kalatuotannolle, Sakylan Pyhajarven Tila Ja Biologinen Tuotanto (Lounais-Suomen Vesiensuojeluyhdistys R. Y., Turku, Finland, 1981) 47:173-176.
  • E. Percival and H. Whitehead, 1929. A quantitative study of the fauna of some types of stream-bed. J. Ecol. 17:282-314, from p. 311 & overleaf.
  • J. Sarvala, Paarjarven energiatalous, Luonnon Tutkija 78(4-5):181-190, from p. 184 (1974).
  • J. Sarvala, Paarjarven energiatalous, Luonnon Tutkija 78:181-190, from p. 185.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 70
Specimens with Sequences: 44
Specimens with Barcodes: 35
Species: 12
Species With Barcodes: 6
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Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Pisidium

Pisidium is a genus of very small or minute freshwater clams known as pill clams or pea clams, aquatic bivalve molluscs in the family Sphaeriidae, the pea clams and fingernail clams. In some bivalve classification systems, the family Sphaeriidae is referred to as Pisidiidae, and occasionally Pisidium species are grouped in a subfamily known as Pisidiinae.

Drawing of the right valve external view of Pisidium moitessierianum
Drawing of the right valve internal view ofPisidium moitessierianum
Drawing of the right valve lateral view of Pisidium moitessierianum

Pisidium and taphonomy[edit]

In large enough quantities, the minute shells of these bivalves can have an impact on environmental conditions, and this change in conditions can positively affect the ability of organic remains in the immediate environment to fossilize (one aspect of taphonomy).[1] For example, in the Dinosaur Park Formation, the fossil remains of hadrosaur eggshells are rare.[2] This is because the breakdown of tannins from the local coniferous vegetation caused the ancient waters to be acidic, and therefore usually eggshell fragments dissolved in the water before they had a chance to be fossilized.[3]

Hadrosaur eggshell fragments are however present in two microfossil sites in the area. Both of these sites are dominated by preserved shells of invertebrate life, primarily shells of pisidiids.[2] The slow dissolution of these minute bivalve shells released calcium carbonate into the water, raising the water's pH high enough that it prevented the hadrosaur eggshell fragments from dissolving before they could be fossilized.[4]

Extant subgenera and species[edit]

Extant subgenera and species within the genus Pisidium include:

subgenus Euglesa Jenyns, 1832

subgenus Pisidium Pfeiffer, 1821

subgenus Cyclocalyx Dall, 1903

subgenus Tropidocyclas Dall, 1903

subgenus Henslowiana Fagot, 1892

subgenus Hiberneuglesa Starobogatov, 1983

subgenus Cingulipisidium Pirogov & Starobogatov, 1974

subgenus Pseudeupera Germain, 1909

subgenus Neopisidium Odhner, 1921

subgenus Odhneripisidium Kuiper, 1962

subgenus Afropisidium Kuiper, 1962

subgenus ?

subgenus incertae sedis

Footnotes[edit]

  1. ^ Tanke and Brett-Surman (2001).
  2. ^ a b "Abstract," Tanke and Brett-Surman (2001). Page 206.
  3. ^ "Discussion," Tanke and Brett-Surman (2001). Page 212.
  4. ^ "Eggshell," Tanke and Brett-Surman (2001). Page 209.
  5. ^ Appleton C., Ghamizi M., Jørgensen A., Kristensen T. K., Lange C., Stensgaard A-S. & Van Damme D. (2009). Pisidium pirothi. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4. <www.iucnredlist.org>. Downloaded on 3 December 2010.
  6. ^ Lange C. N. & Ngereza C. (2004). Pisidium artifex. 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007.
  7. ^ Bogan A. (2011). Pisidium stewarti. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 1 November 2012.
  8. ^ Kuiper J.G.J. (2009). "Fossil records of Palaearctic Pisidium species in tropical Africa". Zoologische Mededelingen 83(10): 593-594. HTM.

References[edit]

  • Tanke, D.H. and Brett-Surman, M.K. 2001. Evidence of Hatchling and Nestling-Size Hadrosaurs (Reptilia:Ornithischia) from Dinosaur Provincial Park (Dinosaur Park Formation: Campanian), Alberta, Canada. pp. 206–218. In: Mesozoic Vertebrate Life—New Research Inspired by the Paleontology of Philip J. Currie. Edited by D.H. Tanke and K. Carpenter. Indiana University Press: Bloomington. xviii + 577 pp.
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