Compensatory Feeding inDanaus plexippus(Lepidoptera: Nymphalidae) in Response to Variation in Host Plant Quality

The evolution of larval foraging behaviour in response to host plant variation in a leaf beetle

The evolutionary causes of variation in host specialization among phytophagous insects are still not well understood and identifying them is a central task in insect /host plant biology. Here we examine host utilization of the chrysomelid beetle Oreina elongata that shows interpopulation variation in the degree of specialization. We focus on larval behaviour and on what selection pressures may ...

Geographical variation in larval host-plant use by Heliconius erato (Lepidoptera: Nymphalidae) and consequences for adult life history.

Adult body size, one of the most important life-history components, varies strongly within and between Heliconius erato phyllis (Lepidoptera: Nymphalidae) populations. This study determines if this variation is caused by geographical changes in host-plant used by the larval stage, whose reproductive parameters are influenced by female body size, with estimates of the corresponding heritability....

Variation in the response of barley cultivars to nirrogen fertilizer

investigating cda tendency and critical thinking abilities of iranian translation students in relation to their translation quality

امروزه مسئله ی اساسی در رویکرد های جدید زبانشناسی، ابعاد اجتماعی و ایدئولوژیک زبان تلقی می شود. گروه های مختلف اجتماعی، سیاسی و یا مذهبی از زبان به عنوان ابزاری برای دستیابی به اهداف درون گروهی خود استفاده می کنند (ون دایک، 2003). آنها معولا ایدئولوژی خود را صریحا ابراز نمی کنند بلکه آن را در غالب کلمات و ساختارهای زبانی پنهان نگه می دارند. تشخیص ایدئولوژی های پنهان در گفتمان نیازمند این موضوع ...

Larval Morph Variation in Chlosyne Lacinia (nymphalidae)

Mature larvae of the patch butterfly, Chlosyne lacinia (Geyer), exhibit striking color polymorphism. First described by T. D. A. Cockerell in Edwards (1893) and illustrated by Neck et aI. (1971), the three morphs are as follows: rufa, an all orange or orange-red form; nigra, an all black form; and bicolor, a form basically black as in nigra but with a prominent mid-dorsal row of orange to orang...