Unexpectedly high levels of parasitism of wheat stem sawfly larvae in postcutting diapause chambers

Autor:	Tatyana A. Rand, Thomas G. Shanower, Debra K. Waters
Rok vydání:	2011
Předmět:	Larva biology Physiology Zoology Parasitism Introduced species Hymenoptera Diapause biology.organism_classification Sawfly Structural Biology Insect Science Botany Cephidae Molecular Biology Braconidae Ecology Evolution Behavior and Systematics
Zdroj:	The Canadian Entomologist. 143:455-459
ISSN:	1918-3240 0008-347X
DOI:	10.4039/n11-023
Popis:	We examined rates of late-season parasitism of larvae of the wheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), by native species of Bracon F. (Hymenoptera: Braconidae) over 8 years in Montana and North Dakota, United States of America. We found that rates of parasitism of larvae in diapause chambers reached a maximum of 46%, exceeding the previously reported maximum of 2.5% in 75% of sites and years examined. In contrast to previous work, our results demonstrate that C. cinctus larvae are suitable hosts for braconid parasitoids, even after the formation of diapause chambers, and suggest that parasitism rates may be underestimated if stems are sampled prior to harvest.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0d55b80fb2d07dabe0dfefd0bdd14558 https://doi.org/10.4039/n11-023 Zobrazit plný text záznamu