English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Life Cycle, Production and Survival Rates of Ptychoptera paludosa (Diptera: Ptychopteridae)

Wolf, B., & Zwick, P. (2001). Life Cycle, Production and Survival Rates of Ptychoptera paludosa (Diptera: Ptychopteridae). International Review of Hydrobiology, 86(6), 661-674.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Wolf, Beate1, Author           
Zwick, Peter1, Author           
Affiliations:
1Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976546              

Content

show
hide
Free keywords: Biomass; emergence; growth; pupation; reproduction
 Abstract: Life cycle, survival and production of the univoltine midge Ptychoptera paludosa whose larvae live in fine sandy sediments were studied in a German stream (1989-1990). Growth of the 4th larval instar was linear. Adults emerge from May, for ca 8 weeks ( 1985-1990); emergence was 0.56 g dry weight m-2 lentic area (1990). Density decreased strongly only when larvae were young; except after an exceptional spate, numbers emerging were independent of discharge, Larval survival was ca 9%; only 10% of the potential offspring of the survivors actually appeared in the next generation. Secondary production (P) was 2.3 g ash free dry weight (AFDW) m-2 y-1, mean biomass (B) was 0.6 g AFDW m-2, i.e., the P/B ratio was 3.8.

Details

show
hide
Language(s): eng - English
 Dates: 2001
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 63303
Other: 0990
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: International Review of Hydrobiology
  Alternative Title : Internat. Rev. Hydrobiol.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 86 (6) Sequence Number: - Start / End Page: 661 - 674 Identifier: ISSN: 14342944