Ecology

Habitat

Depth range based on 88 specimens in 4 taxa.

Environmental ranges
  Depth range (m): 0.5 - 18.4

Graphical representation

Depth range (m): 0.5 - 18.4
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Associations

Known prey organisms

Chaoborus (Chaoborous) preys on:
zooplankton
Psectrocladius
Rotifera
Cladocera
Chironomidae
Diaphanosoma
Daphnia
Ceriodaphnia
Bosmina
Chydorus
Tropocyclops
Diaptomus
Copepoda
Synchaeta
Polyarthra
Conochilus
Eudiaptomus
Daphnia pulex
Thermocyclops hyalinus

Based on studies in:
USA: Maine (Lake or pond)
Uganda, Lake George (Lake or pond)
Russia (Agricultural)
Quebec (Lake or pond, Pelagic)
Finland (Lake or pond, Pelagic)
USA: Michigan (Lake or pond)

This list may not be complete but is based on published studies.
  • N. N. Smirnov, Food cycles in sphagnous bogs, Hydrobiologia 17:175-182, from p. 179 (1961).
  • H. M. Wilbur, Competition, predation, and the structure of the Ambystoma-Rana sylvatica community, Ecology 53:3-21, from p. 14 (1972).
  • D. J. W. Moriarty, J. P. E. C. Darlington, I. G. Dunn, C. M. Moriarty and M. P. Tevlin, Feeding and grazing in Lake George, Uganda, Proc. Roy. Soc. B. 184:299-319 (1973).
  • A. Baril, Effect of the water mite Piona constricta on planktonic community structure, M.Sc. Thesis, University of Ottawa, Canada (1983).
  • J. Sarvala, Paarjarven energiatalous, Luonnon Tutkija 78(4-5):181-190, from p. 184 (1974).
  • J. L. Brooks and E. S. Deevey, New England. In: Limnology in North America, D. G. Frey, Ed. (Univ. of Wisconsin Press, Madison, 1963), pp. 117-162, from p. 143.
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Known predators

Chaoborus (Chaoborous) is prey of:
Nematocera imagines
Osmerus eperlanus mordax
Ambystoma maculatum
Ambystoma laterale
Ambystoma tremblayi
Dytiscus
Notophthalmus viridescens

Based on studies in:
Russia (Agricultural)
Quebec (Lake or pond, Pelagic)
USA: Michigan (Lake or pond)

This list may not be complete but is based on published studies.
  • N. N. Smirnov, Food cycles in sphagnous bogs, Hydrobiologia 17:175-182, from p. 179 (1961).
  • H. M. Wilbur, Competition, predation, and the structure of the Ambystoma-Rana sylvatica community, Ecology 53:3-21, from p. 14 (1972).
  • A. Baril, Effect of the water mite Piona constricta on planktonic community structure, M.Sc. Thesis, University of Ottawa, Canada (1983).
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© 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: 126
Specimens with Sequences: 124
Specimens with Barcodes: 116
Species: 10
Species With Barcodes: 10
Public Records: 12
Public Species: 10
Public BINs: 2
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Glassworm

A glassworm is a type of midge larva called Chaoborus. They are also known as phantom midge larvae, because they are transparent. They can be found commonly in lakes all over the world and can be up to 2 centimeters in length.

Glassworms are almost entirely transparent, except for pairs of black kidney-shaped structures in the front and the back of the body. These dots are the air sacs. They use these air sacs to migrate up and down in lakes. Glassworms breathe through the end of their abdomen and have two small eyes at the front of their bodies.

Chaoborus adults do not bite or suck blood. Larvae live in open waters and even sediments, where there is no oxygen for them to breathe. In some lakes they can be found as deep as 70 m. In these deep anoxic waters they can avoid predation more easily than near the surface. They get around the fact that a normal air filled invertebrate tracheal system would fail at these depths by having it reduced to just two air sacs.[1] They are predaceous, and catch their prey with their modified prehensile antennae. They look somewhat like mosquito larvae, on which they prey and frequently destroy in large numbers.

The simplest way to collect Chaoborus larvae is by a plankton net. Glassworms are very easy to store if the water is kept cold and aerated. They are very tolerant to bad water conditions, including chlorine. They are sometimes collected and sold as fish food.

References[edit]

  1. ^ Maddrell, S.H.P. (1998). Why are there no insects in the open sea? Journal of Experimental Biology 201: 2461-2464. Online.
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