Access the full text.
Sign up today, get DeepDyve free for 14 days.
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
ELIMINATION BY PHYSICAL ATTACK OF SUPERNUMERARY LARVAE OF PSEUDEUCOILA BOCHEI WELD (CYNIPIDAE) IN THEIR HOSTS, LARVAE OF DROSOPHILA by H. J. P. EIJSACKERS* and K. BAKKER (Zoological Laboratory, University of Leiden, The Netherlands) INTRODUCTION The cynipid wasp Pseudeucoila bochei Weld lays her eggs in the larvae of Drosophila species. One host larva always produces only one parasite, hence there must be some kind of mechanism which prevents super- parasitization or which eliminates supernumerary larvae within the host. BAKKER et al. (1967) found that Pseudeucoila can discriminate between non-parasitized and already parasitized larvae. However, this ability does not prevent egg-laying in already parasitized hosts when there are not sufficient non-parasitized hosts available. Hence, both super- parasitization and elimination occur. According to SALT (1961) there are four ways for elimination: 1) accidental injury, 2) selective starvation, 3) physiological suppression and 4) direct physical attack. Since in Pseudeucoila one host always produces one parasite, "accidental injury "cannot be the cause of the elimination. "Selective starvation" does not come into account either, as the elimination takes place when the host provides still plenty of food for more than one parasite larva. FISHER (1961a, b; 1963) analysed interspecific competition between Horogenes chrysostictos and
Netherlands Journal of Zoology (in 2003 continued as Animal Biology) – Brill
Published: Jan 1, 1970
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.