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

Endotokia matricida in hermaphrodites of Heterorhabditis spp. and the effect of the food supply

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 Nematology
For more content, see Nematologica.

Intra-uterine birth causing maternal death (endotokia matricida) is relatively common in rhabditid nematodes and typical for entomopathogenic nematodes of the genus Heterorhabditis. A detailed description of this phenomenon is given, including a summary of embryo development, egg-laying, juvenile hatching and development. It is demonstrated that low food supply significantly promotes the beginning of endotokia matricida but has no influence on the time scale of the process. The biological function of endotokia matricida and the intra-uterine induction of the dauer formation is discussed. Endotokia matricida in Heterorhabditis spp. is a well synchronised process of the destruction of the maternal tissues correlated with the juvenile development including the uptake of the symbiotic bacteria by the late pre-dauer stage. It secures the development of dauer juveniles at a moment when the external food supply is reducing and provides offspring which are well equipped with energy reserves and symbiotic bacteria for long term survival and subsequent infection of insects in the soil. Endotokia matricida bei Hermaphroditen von Heterorhabditis spp. und der Einfluss der Nahrungsversorgung . - Der Schlupf juveniler Nematoden im mutterlichen Uterus mit anschliessender Totung des Muttertieres (endotokia matricida) ist relativ weit verbreitet bei rhabditiden Nematoden und typisch fur entomopathogene Nematoden der Gattung Heterorhabditis. Die Endotokia matricida wird beschrieben sowie die Embryonalentwicklung, das Eilegeverhalten, der Schlupf und die Entwicklung der Juvenilen. Der Beginn der endotokia matricida wird durch eine niedrige Nahrungsverfugbarkeit in der Kultur signifikant gefordert, diese hat jedoch keinen Einfluss auf den zeitlichen Ablauf der endotokia matricida. Die biologische Funktion der endotokia matricida und die intra-uterine Induktion der Dauerlarvenbildung werden diskutiert. Die endotokia matricida bei Heterorhabditis spp. ist ein gut synchronisierter Prozess, bei dem die Zerstorung des Muttertiers korreliert mit der Entwicklung der Juvenilstadien, einschliesslich der Aufnahme der symbiotischen Bakterien durch das Pra-Dauer Stadium. Sie sichert die Entwicklung von Dauerlarven zu einem Zeitpunkt, wenn die externe Nahrungsversorgung sich verschlechtert und bringt so Nachkommen hervor, die gut mit Energiereserven und symbiotischen Bakterien ausgestattet sind, um im Boden lange zu uberdauern und Insekten zu befallen.


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:
    Nematology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation