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Demographic comparison of sweetpotato weevil reared on a major host, Ipomoea batatas, and an alternative host, I. triloba.

Reddy GV, Chi H - Sci Rep (2015)

Bottom Line: We found that C. formicarius developed faster on I. batatas than on I. triloba.The fecundity of females was 90.0 eggs on I. batatas significantly higher than the mean fecundity of 68.5 eggs on I. triloba.Although this insect has a higher intrinsic rate of increase on I. batatas, the study indicated that C. formicarius can successfully survive and reproduce on both host plants.

View Article: PubMed Central - PubMed

Affiliation: Western Triangle Agricultural Research Center, Montana State University, 9546 Old Shelby Rd., P. O. Box 656, Conrad, MT 59425, USA.

ABSTRACT
In this study, we collected life table data for the sweetpotato weevil, Cylas formicarius, grown on Ipomoea batatas and Ipomoea triloba, and analyzed them using an age-stage, two-sex life table. We also demonstrated the growth potential of C. formicarius on these two host plants by using population projection. These data will be useful to the growers to the selection or eradication of host plants in an integrated control strategy for C. formicarius for the entire area of the targeted areas. We found that C. formicarius developed faster on I. batatas than on I. triloba. The developmental times of the larval and pupal stages on I. batatas than on I. triloba were 37.01 and 8.3 days. The adult females emerged before and began to produce eggs at 42 days earlier when reared on I. batatas. The fecundity of females was 90.0 eggs on I. batatas significantly higher than the mean fecundity of 68.5 eggs on I. triloba. Although this insect has a higher intrinsic rate of increase on I. batatas, the study indicated that C. formicarius can successfully survive and reproduce on both host plants.

No MeSH data available.


Survival rate to different developmental stages of Cylas formicarius on sweet potato Ipomoea batatas (A) and morning glory Ipomoea triloba (B).
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f1: Survival rate to different developmental stages of Cylas formicarius on sweet potato Ipomoea batatas (A) and morning glory Ipomoea triloba (B).

Mentions: The faster development on I. batatas could also be observed in the age-stage survival rate (sxj). The curves of females and males emerged at 42 and 39 d, respectively, for I. batatas (Fig. 1A); in contrast, female and male adults appeared at 60 and 64 d, respectively, on I. triloba (Fig. 1B). The female age-specific fecundity (fxj) and age-specific fecundity (mx) on I. batatas not only began much earlier (at 42 d) than that on I. triloba (at 60 d) (Fig. 2), but were also significantly higher than for the latter.


Demographic comparison of sweetpotato weevil reared on a major host, Ipomoea batatas, and an alternative host, I. triloba.

Reddy GV, Chi H - Sci Rep (2015)

Survival rate to different developmental stages of Cylas formicarius on sweet potato Ipomoea batatas (A) and morning glory Ipomoea triloba (B).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4496664&req=5

f1: Survival rate to different developmental stages of Cylas formicarius on sweet potato Ipomoea batatas (A) and morning glory Ipomoea triloba (B).
Mentions: The faster development on I. batatas could also be observed in the age-stage survival rate (sxj). The curves of females and males emerged at 42 and 39 d, respectively, for I. batatas (Fig. 1A); in contrast, female and male adults appeared at 60 and 64 d, respectively, on I. triloba (Fig. 1B). The female age-specific fecundity (fxj) and age-specific fecundity (mx) on I. batatas not only began much earlier (at 42 d) than that on I. triloba (at 60 d) (Fig. 2), but were also significantly higher than for the latter.

Bottom Line: We found that C. formicarius developed faster on I. batatas than on I. triloba.The fecundity of females was 90.0 eggs on I. batatas significantly higher than the mean fecundity of 68.5 eggs on I. triloba.Although this insect has a higher intrinsic rate of increase on I. batatas, the study indicated that C. formicarius can successfully survive and reproduce on both host plants.

View Article: PubMed Central - PubMed

Affiliation: Western Triangle Agricultural Research Center, Montana State University, 9546 Old Shelby Rd., P. O. Box 656, Conrad, MT 59425, USA.

ABSTRACT
In this study, we collected life table data for the sweetpotato weevil, Cylas formicarius, grown on Ipomoea batatas and Ipomoea triloba, and analyzed them using an age-stage, two-sex life table. We also demonstrated the growth potential of C. formicarius on these two host plants by using population projection. These data will be useful to the growers to the selection or eradication of host plants in an integrated control strategy for C. formicarius for the entire area of the targeted areas. We found that C. formicarius developed faster on I. batatas than on I. triloba. The developmental times of the larval and pupal stages on I. batatas than on I. triloba were 37.01 and 8.3 days. The adult females emerged before and began to produce eggs at 42 days earlier when reared on I. batatas. The fecundity of females was 90.0 eggs on I. batatas significantly higher than the mean fecundity of 68.5 eggs on I. triloba. Although this insect has a higher intrinsic rate of increase on I. batatas, the study indicated that C. formicarius can successfully survive and reproduce on both host plants.

No MeSH data available.