Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Effects of Different Kinds of Food, Starvation and Restart of Feeding On the Haemolymph-Glucose of the Pond Snail Lymnaea Stagnalis

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

In the present study, the amount of glucose and of some other carbohydrate components in the haemolymph of laboratory bred specimens of Lymnaea stagnalis was studied in relation to different feeding conditions. The snails, normally fed on lettuce, were fed on a carbohydrate rich diet (Bemax), were starved, or were fed again after a period of starvation. It is demonstrated that the haemolymph-glucose concentration has a rather constant level of 16μg/ml in lettuce fed snails. This level, however, can be slightly different for snails originating from various breeding tanks. During starvation (up to 15 days) the haemolymph-glucose remains at the same constant level as in lettuce fed snails. Reproduction and growth stop and especially the former will cause a reduced need for glucose. Some glucose, however, is needed for metabolism. It is suggested that the haemolymph-glucose is maintained at a constant level during adverse conditions (such as starvation) at the expense of, mainly, polysaccharides present in the vesicular connective tissue cells and in the reproductive organs. When feeding again on lettuce after a period of starvation and when feeding on a carbohydrate rich diet (Bemax), within 1 day the haemolymph-glucose level is raised (to 36 μg/ml and 144 μg/ml, respectively) above the level of lettuce fed control snails. This raise in the glucose concentration in the haemolymph is only temporary in the animals fed again on lettuce. After 7 days of feeding the glucose level is no longer significantly different from the value of lettuce fed control snails. Also reproduction and growth are resumed after this period. It is suggested that a raise in the glucose concentration in the haemolymph (caused by the restart of feeding) is a stimulus for the start of reproduction and growth. The raise in the glucose concentration in the haemolymph of snails fed on Bemax, lasts during the whole experimental period (7 days). At the end of this period the haemolymph has a raised, constant glucose concentration of 86 μg/ml which represents an equilibrium between the increased glucose influx in the haemolymph and an increased use of glucose by glucose consuming processes like storage and reproduction.

Affiliations: 1: (Department of Biology, Free University, Amsterdam, The Netherlands


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Netherlands Journal of Zoology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation