de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Impressum Kontakt Einloggen
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Life Cycle, Production and Survival Rates of Ptychoptera paludosa (Diptera: Ptychopteridae)

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons57010

Wolf,  Beate
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons57026

Zwick,  Peter
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

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


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-C853-5
Zusammenfassung
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.