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  The briefly colonial life of hatchlings of the net-spinning caddisfly Plectrocnemia conspersa

Hildrew, A. G., & Wagner, R. (1992). The briefly colonial life of hatchlings of the net-spinning caddisfly Plectrocnemia conspersa. Journal of the North American Benthological Society, 11(1), 60-68.

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 Creators:
Hildrew, Alan G., Author
Wagner, Rüdiger1, Author           
Affiliations:
1Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976546              

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Free keywords: caddis; first instar; eggs; colonial; net spinning; recruitment; behaviour; web
 Abstract: Egg masses of the European net-spinning caddisfly Plectrocnemia conspersa were collected from a small stream, with the object of studying egg incubation and early (first seven days) larval behaviour. Egg masses contained 150-800 eggs (mean 440.2, 95%CL 75.6). Egg incubation period in the laboratory (6 days) was related to temperature (X degree C) by the equation ln(y) = 3.14 + 0.144 ln(x), taking 93 days at 6 degree C and 20 days at 18 degree C. Egg masses incubated in the field hatched as predicted by this equation. The length of individual eggs increased by an average of 17% during incubation. Emergence from the egg took about 30 min, and newly hatched larvae had yolk in their guts which lasted 24-30h, after which feeding began. Larvae took only live prey. In still water, larvae span silk, ventilated using abdominal undulations, turned in the net, and performed further miscellaneous movements.

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Language(s): eng - English
 Dates: 1992-03
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 237837
Other: 0813
 Degree: -

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Title: Journal of the North American Benthological Society
  Alternative Title : J. N. Am. Benthol. Soc.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 11 (1) Sequence Number: - Start / End Page: 60 - 68 Identifier: ISSN: 08873593