title: [The effect of certain periodic characteristics of the ecosystem on the digestive use of Pieris brassicae (Lepidoptera: pieridae) pupae by a parasitoid (Pimpla instigator F: Hymenoptera: Ichneumonidae].
abstract: The lengthening of photophase when it becomes synchrnous with thermophase, increases the quantitative use of Pieris brassicae by Pimpla instigator (increase of Q.A. and C.U.)P. instigator not only seems to adapt itself to diapausing hosts but also to a long photophase (corresponding to the thermophase)i.e., to all the characteristics of the system in which it is living.
mesh_terms: D000818:Animals; D001835:Body Weight; D005260:Female; D006927:Hymenoptera / Q000033:anatomy & histology / Q000378:metabolism*; D007915:Lepidoptera / Q000033:anatomy & histology / Q000378:metabolism*; D008027:Light; D008297:Male; D010271:Parasites / Q000378:metabolism; D010507:Periodicity; D012737:Sex Factors; D013696:Temperature
vernacular_title: Influence de certaines caractéristiques périodiques de l'écosystéme sur l'utilisation alimentaire de Pieres brassicae (Lepidoptera: pieridae) en diapause par un parasitoïde (Pimpla instigator F: Hymenoptera: Ichneumonidae)