Author： TZANAKAKIS M. E. TSITSIPIS J. A.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.60, Iss.1, 1967-01, pp. : 277-279
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Abstract
The determination of the age of insect pupae by morphological characteristics, rather than in terms of time at a given temperature, is often highly desirable in entomological research. Morphological criteria would allow us to determine a certain true age of a pupa (i.e., a certain stage of its development) at which a treatment such as gamma irradiation should be applied. Such criteria are useful, not only because a sufficiently constant temperature cannot always be achieved and replicated over rather long periods of time in all laboratories, but also because there is often need to determine the approximate age of field-collected pupae.
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