Mayolenes: Labile defensive lipids from the glandular hairs of a caterpillar (Pieris rapae)

Mayolenes: labile defensive lipids from the glandular hairs of a caterpillar (Pieris rapae).

Larvae of the European cabbage butterfly, Pieris rapae (Pieridae), are beset with glandular hairs, bearing droplets of a clear oily secretion at their tip. The fluid consists primarily of a series of chemically labile, unsaturated lipids, the mayolenes, which are derived from 11-hydroxylinolenic acid. In bioassays with the ant Crematogaster lineolata, the secretion was shown to be potently dete...

Pinoresinol: A lignol of plant origin serving for defense in a caterpillar.

Pinoresinol, a lignan of wide distribution in plants, is found to occur as a minor component in the defensive secretion produced by glandular hairs of caterpillars of the cabbage butterfly, Pieris rapae. The compound or a derivative is appropriated by the larva from its normal food plant (the cabbage, Brassica oleracea). Pinoresinol was shown to be absent from the secretion if the larva was giv...

The Genome of Pieris rapae Granulovirus.

Pieris rapae granulovirus (PrGV) can infect and kill larvae of Pieris rapae, a worldwide and important pest of mustard family crops. The PrGV genome consists of 108,592 bp, is AT rich (66.8%), and is most structurally and organizationally similar to the Choristoneura occidentalis granulovirus genome. Of the predicted 120 open reading frames (ORFs), 32 genes specifically occurred in GVs, includi...

Mechanism of locomotion observed on caterpillar hairs.

To the Editorial Committee of the BRITISH JOURNAL OF OPHTHALMOLOGY. SIRs-Although ophthalmia nodosa has been known for more than a century (Sch6n, 1861), the mechanism of the migration of caterpillar hairs has remained controversial. There is no need to enumerate the explanations proposed, but one point should be noted here which has rarely been mentioned in the recent literature, not even in t...

Pieris rapae – a nectar feeding butterfly: Composition of the cuticle of the proboscis