منابع مشابه
Drought predisposes piñon-juniper woodlands to insect attacks and mortality.
To test the hypothesis that drought predisposes trees to insect attacks, we quantified the effects of water availability on insect attacks, tree resistance mechanisms, and mortality of mature piñon pine (Pinus edulis) and one-seed juniper (Juniperus monosperma) using an experimental drought study in New Mexico, USA. The study had four replicated treatments (40 × 40 m plot/replicate): removal of...
متن کاملInsect Tumors Induced by Nerve Severance: Incidence and Mortality*
Among the causative and contributory factors in abnormal growth, the nervous system deserves attention—even though, to date, very little experi mental evidence is available to suggest a relation ship between nervous disturbance and tumor de velopment. The insect, Leucophaea maderae, is one example which illustrates such a relationship. In this species, tumors1 can be induced experimental ly b...
متن کاملInsect Tumors Induced by Nerve Severance: Incidence and Mortality*
Among the causative and contributory factors in abnormal growth, the nervous system deserves attention—even though, to date, very little experi mental evidence is available to suggest a relation ship between nervous disturbance and tumor de velopment. The insect, Leucophaea maderae, is one example which illustrates such a relationship. In this species, tumors1 can be induced experimental ly b...
متن کاملDynamic models for insect mortality due to exposure to insecticides
Models of population dynamics play a central role in our understanding of the effects of disturbance in both natural and managed ecosystems. One of the most persistent and pervasive anthropogenic disturbances continues to be the widespread use of chemical pesticides [6]. Because they are ubiquitous and are easy to manipulate in the laboratory and in the field, pesticides are ideally suited for ...
متن کاملInsect tumors induced by nerve severance: incidence and mortality.
Among the causative and contributory factors in abnormal growth, the nervous system deserves attention—even though, to date, very little experi mental evidence is available to suggest a relation ship between nervous disturbance and tumor de velopment. The insect, Leucophaea maderae, is one example which illustrates such a relationship. In this species, tumors1 can be induced experimental ly b...
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ژورنال
عنوان ژورنال: Nature
سال: 1970
ISSN: 0028-0836,1476-4687
DOI: 10.1038/227421a0