منابع مشابه
Nematodes, figs and wasps.
Certain Ficus spp. are dependent on wasps for pollination. The invading wasps usually shed their wings on entering a fig through the ostiole; and during attempted or successful egg deposi t ion, transfer pollen to the female flowers and then die. A gall forms around each egg, and within the gall develops a male or a female wasp. Male wasps are the first to emerge from galls, and they then ferti...
متن کاملFigs and fig wasps
The current project builds on previous grants under the Darwin Initiative that focused on Nepal's flora, a key one of which dealt with plant information and technology transfer, run by the Natural History Museum in London. But the current project is much more ambitious. Although only funded for three years at present, the team hopes funds will be made available for the estimated 15 years it wil...
متن کامل(Microsoft Word - text and figs - word)
W e r e p o r t h e r e d i r e c t m e a s u r e m e n t s o f t h e d e s t r u c t i o n o f c h a r g e q u a n t i z a t i o n i n a s i n g l e e l e c t r o n b o x , t h e f i r s t o v e r t h e f u l l r a n g e o f b o x t o l e a d c o n d u c t a n c e v a l u e s f r o m G ~ 0 t o t h e c o n d u c t a n c e q u a n t u m G
متن کاملGut physicochemistry of grassland grasshoppers.
We examined the pH and Eh of the digestive tract of 23 species of mixed-grass prairie grasshoppers, and asked whether these traits were associated with the species breadth and forb composition of their diets. We report that the gut lumen of all grasshoppers was oxidizing and ranged from slightly acid to neutral depending on the gut region and species. Although gut physicochemical conditions dif...
متن کاملBiological control of locusts and grasshoppers.
Control of grasshoppers and locusts has traditionally relied on synthetic insecticides, and for emergency situations this is unlikely to change. However, a growing awareness of the environmental issues associated with acridid control as well as the high costs of emergency control are expanding the demand for biological control. In particular, preventive, integrated control strategies with early...
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ژورنال
عنوان ژورنال: BMJ
سال: 1979
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.1.6170.1053