An eradication project has been initiated in the southwestern island of Japan to contain the West Indian sweetpotato weevil, Euscepes postfasciatus (Fairmaire) using the sterile insect technique (SIT). We report here about rearing this insect for >14 successive generations on an artificial diet, an element required for successful use of SIT. The fecundity of reared weevils increased with each generation. Egg hatch (85–95%) and adult yield (30–60%) were consistently high throughout the test period. Comparisons of fecundity and preoviposition periods indicated that females from the artificially reared strain at generation 14 oviposited more and earlier in life than those from the base stock. These differences resulted from an increase in frequency (100%) of females that laid eggs without standard oviposition substrates in the artificially reared strain. Adaptation to an artificial diet is discussed in relation to the oviposition behavior of E. postfasciatus and the success of SIT against this weevil.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 95 • No. 6