Effects of Five Different Crops on Development and Fitness of Spodoptera frugiperda

doi:10.11923/j.issn.2095-4050.cjas2024-0057

Abstract

Abstract:

The study aimed to clarify the host fitness and potential damage of the major invasive insect of Spodoptera frugiperda to different crops besides maize, providing a scientific basis for damage risk assessment of host shift and the population monitoring of the pest. The effects of individual development, survival rate and fecundity of S. frugiperda fed on different crops of pepper, tomato, sugarcane, coix and ginger were determined indoors, and then were compared and analyzed with maize as the control. Furthermore, fitness of S. frugiperda on various crops was evaluated based on the population growth trend index (I). The results showed that the adaptability of S. frugiperda on different crops was declined significantly compared with the preferable host of maize. The effects of five different crops on S. frugiperda mainly manifested as the developmental duration prolonged, survival rate reduced, pupal weight and the adults emergence rate declined, the shorter longevity of adults, less average eggs laid per female and lower egg hatching rate. Pepper exhibited the most adverse impact on S. frugiperda, such as the larval duration, larval survival rate, pupal weight and female longevity of the pest fed on pepper were 37.40 d, 18.52%, 0.1130 g and 5.25 d, respectively, while those on maize were 16.52 d, 92.59%, 0.2178 g and 11.74 d, respectively. The results showed that S. frugiperda feeding on pepper could not finish its life cycle. Although the S. frugiperda could develop normally and completed its whole life cycle fed on tomato, sugarcane, coix and ginger, but the relative fitness wasonly 0.023, 0.107, 0.112 and 0.130, respectively. The population growth trend index (I) of S. frugiperda feeding on maize was 226.38. In conclusion, maize is the most preferable host for S. frugiperda. The crops of tomato, sugarcane, coix and ginger are not the suitable hosts for population reproduction of S. frugiperda. However, S. frugiperdas till can complete its life cycle by feeding on its young leaves, indicating its potential hazard risk, and the risk of pepper is minimal.

Key words: invasive pest, Spodoptera frugiperda, host, fitness, crop

QIU Liangmiao, LIU Qiquan, CHEN Xiuqin, LU Xuesong, LIU Bipao, HE Yuxian. Effects of Five Different Crops on Development and Fitness of Spodoptera frugiperda[J]. Journal of Agriculture, 2025, 15(5): 29-35.

Figures/Tables 4

References 40

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参数	寄主作物
参数	辣椒	番茄	甘蔗	薏苡	生姜	玉米
幼虫历期/d	37.40±2.27a	25.36±1.74b	19.65±0.63d	21.94±1.71c	26.84±2.00b	16.52±1.42e
幼虫存活率/%	18.52±3.20d	35.18±3.21c	38.89±5.56c	42.59±3.20c	72.22±5.56b	92.59±3.21a
化蛹率/%	69.45±4.81c	69.84±2.75c	81.35±5.62b	73.81±2.06c	81.78±5.89b	96.08±3.39a
羽化率/%	61.11±9.62b	65.00±8.66b	66.87±4.47b	71.11±7.70b	72.14±7.49b	91.67±3.61a
蛹重/g	0.1130±0.01d	0.1438±0.01c	0.1577±0.01b	0.1509±0.01b	0.1498±0.02b	0.2178±0.03a
蛹历期/d	9.50±1.05a	8.91±0.54a	8.93±0.73a	8.77±0.73a	8.74±0.75a	9.02±1.18a

参数	寄主作物
参数	辣椒	番茄	甘蔗	薏苡	生姜	玉米
幼虫历期/d	37.40±2.27a	25.36±1.74b	19.65±0.63d	21.94±1.71c	26.84±2.00b	16.52±1.42e
幼虫存活率/%	18.52±3.20d	35.18±3.21c	38.89±5.56c	42.59±3.20c	72.22±5.56b	92.59±3.21a
化蛹率/%	69.45±4.81c	69.84±2.75c	81.35±5.62b	73.81±2.06c	81.78±5.89b	96.08±3.39a
羽化率/%	61.11±9.62b	65.00±8.66b	66.87±4.47b	71.11±7.70b	72.14±7.49b	91.67±3.61a
蛹重/g	0.1130±0.01d	0.1438±0.01c	0.1577±0.01b	0.1509±0.01b	0.1498±0.02b	0.2178±0.03a
蛹历期/d	9.50±1.05a	8.91±0.54a	8.93±0.73a	8.77±0.73a	8.74±0.75a	9.02±1.18a

寄主作物	产卵前期/d	单雌产卵量/粒	孵化率/%	雌性比率/%	成虫寿命/d
寄主作物	产卵前期/d	单雌产卵量/粒	孵化率/%	雌性比率/%	雌成虫	雄成虫
辣椒	-	-	-	0.56±0.09^a	5.25±1.26^d	4.50±0.71^c
番茄	4.33±0.58^a	102.80±97.91^b	56.73±5.60	0.56±0.19^a	8.00±0.71^c	5.75±0.96^c
甘蔗	3.71±0.73^a	262.50±242.47^b	76.53±3.39^b	0.57±0.06^a	9.50±0.93^b	7.67±0.82^b
薏苡	3.07±0.70^b	280.79±209.80^b	76.13±6.69^b	0.53±0.06^a	9.71±0.95^b	7.83±1.17^b
生姜	3.58±0.90^ab	214.67±257.04^b	62.02±8.88^c	0.52±0.08^a	10.33±1.23^b	8.55±1.44^b
玉米	3.13±0.69^b	547.42±197.36^a	92.20±1.28^a	0.55±0.02^a	11.74±1.51^a	9.71±1.49^a

寄主作物	产卵前期/d	单雌产卵量/粒	孵化率/%	雌性比率/%	成虫寿命/d
寄主作物	产卵前期/d	单雌产卵量/粒	孵化率/%	雌性比率/%	雌成虫	雄成虫
辣椒	-	-	-	0.56±0.09^a	5.25±1.26^d	4.50±0.71^c
番茄	4.33±0.58^a	102.80±97.91^b	56.73±5.60	0.56±0.19^a	8.00±0.71^c	5.75±0.96^c
甘蔗	3.71±0.73^a	262.50±242.47^b	76.53±3.39^b	0.57±0.06^a	9.50±0.93^b	7.67±0.82^b
薏苡	3.07±0.70^b	280.79±209.80^b	76.13±6.69^b	0.53±0.06^a	9.71±0.95^b	7.83±1.17^b
生姜	3.58±0.90^ab	214.67±257.04^b	62.02±8.88^c	0.52±0.08^a	10.33±1.23^b	8.55±1.44^b
玉米	3.13±0.69^b	547.42±197.36^a	92.20±1.28^a	0.55±0.02^a	11.74±1.51^a	9.71±1.49^a