An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes.

Abstract

The paper reports the finding of a particular type of Daphnia (Ctenodaphnia, Dybowski & Grochowski 1895) head shields, found in the plankton and in the sediments of two lakes in the Khumbu Region (Nepalese Himalayas). The capsules, all of the smallest size, were characterised by the presence of a hole in the medio-dorsal region, behind the posterior median groove. The location of the hole suggests a link with the nuchal organ, which we found in the neonates of the species. The finding is important for taxonomy and provides information for discussing the current hypothesis on the biogeography of the Ctenodaphnia subgenus. Being well preserved in sediment cores, the capsules are useful tools for reconstructing past phases of active reproduction which occurred also in the past.

Dimensions

Altmetric

PlumX Metrics

Downloads

Download data is not yet available.
Published
1999-02-01
Info
Issue
Section
Original Articles
Keywords:
Daphnia, head-shields, Himalayan lakes, morphology
Statistics
  • Abstract views: 1868

  • PDF: 504
How to Cite
1.
MANCA M, COMOLI P, MARGARITORA FG. An unusual type of Daphnia head shields from plankton and sediments of Himalayan lakes. J Limnol [Internet]. 1999Feb.1 [cited 2020Oct.29];58(1):29-2. Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.1999.29

Most read articles by the same author(s)

1 2 3 > >>