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Adaptability of small brown planthopper to four rice cultivars using life table and population projection method

View Article: PubMed Central - PubMed

ABSTRACT

In this study, we evaluated the adaptability of the small brown planthopper (SBPH), Laodelphax striatellus (Hemiptera: Delphacidae) to four rice cultivars including Shengdao13 (SD13), Shengdao14 (SD14), Shengdao15 (SD15), and Zixiangnuo (ZXN) using the age-stage, two-sex life table with a simplified method for recording egg production (i.e., every five days vs. daily). The intrinsic rate of increase (r) of the SBPH was the highest (0.1067 d−1) on cultivar SD15, which was similar to the rate on SD14 (0.1029 d−1), but was significantly higher than that occurring on ZXN (0.0897 d−1) and SD13 (0.0802 d−1). The differences of the finite rate of increase (λ) on the four rice cultivars were consistent with the r values. Population projection predicted an explosive population growth of the SBPH occurring in a relatively short time when reared on SD14 and SD15. These findings demonstrated that the SBPH can successfully survive on the four rice cultivars, although there were varying host adaptabilities.

No MeSH data available.


Age-stage specific survival rate (Sxj) of the SBPH on four rice cultivars.
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f1: Age-stage specific survival rate (Sxj) of the SBPH on four rice cultivars.

Mentions: The survivorship and stage differentiation of individuals reared on the four rice cultivars can be observed in the age-stage survival rate (sxj). The female and male curves emerged at age 19d and 18d, respectively, for both the SD13 and SD14 cultivars (Fig. 1A and B); in contrast, females appeared at 18d for the SD15 and ZXN cultivars, while males first appeared at 20d on SD15 and 17d on ZXN, respectively (Fig. 1C and D). The female age-stage specific fecundity (fxj) and age-specific fecundity (mx) on the SD13 and SD14 cultivars began at 19d (Fig. 2A and B), only 1d later than on the SD15 and ZXN cultivars (at 18d) (Fig. 2C and D).


Adaptability of small brown planthopper to four rice cultivars using life table and population projection method
Age-stage specific survival rate (Sxj) of the SBPH on four rice cultivars.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5304318&req=5

f1: Age-stage specific survival rate (Sxj) of the SBPH on four rice cultivars.
Mentions: The survivorship and stage differentiation of individuals reared on the four rice cultivars can be observed in the age-stage survival rate (sxj). The female and male curves emerged at age 19d and 18d, respectively, for both the SD13 and SD14 cultivars (Fig. 1A and B); in contrast, females appeared at 18d for the SD15 and ZXN cultivars, while males first appeared at 20d on SD15 and 17d on ZXN, respectively (Fig. 1C and D). The female age-stage specific fecundity (fxj) and age-specific fecundity (mx) on the SD13 and SD14 cultivars began at 19d (Fig. 2A and B), only 1d later than on the SD15 and ZXN cultivars (at 18d) (Fig. 2C and D).

View Article: PubMed Central - PubMed

ABSTRACT

In this study, we evaluated the adaptability of the small brown planthopper (SBPH), Laodelphax striatellus (Hemiptera: Delphacidae) to four rice cultivars including Shengdao13 (SD13), Shengdao14 (SD14), Shengdao15 (SD15), and Zixiangnuo (ZXN) using the age-stage, two-sex life table with a simplified method for recording egg production (i.e., every five days vs. daily). The intrinsic rate of increase (r) of the SBPH was the highest (0.1067 d−1) on cultivar SD15, which was similar to the rate on SD14 (0.1029 d−1), but was significantly higher than that occurring on ZXN (0.0897 d−1) and SD13 (0.0802 d−1). The differences of the finite rate of increase (λ) on the four rice cultivars were consistent with the r values. Population projection predicted an explosive population growth of the SBPH occurring in a relatively short time when reared on SD14 and SD15. These findings demonstrated that the SBPH can successfully survive on the four rice cultivars, although there were varying host adaptabilities.

No MeSH data available.