Effects of temperature, relative humidity, and photoperiod on life history of Cotesia ruficrus (Hymenoptera: Braconidae), an indigenous parasitoid of Spodoptera frugiperda (Lepidoptera: Noctuidae) DOI
Wenqin Yang, Xian Li, Fanxin Meng

et al.

Journal of Economic Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract The indigenous parasitoid Cotesia ruficrus (Haliday) (Hymenoptera: Braconidae) shows promise as a biological control agent for managing the invasive fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in China. However, influence of environmental factors on C. performance remains poorly understood. This study aimed to investigate effects temperature, relative humidity, and photoperiod life history ruficrus. life-history traits were measured at 5 different temperatures (20, 23, 26, 29, 32 ± 1 °C), 4 RH levels (40%, 55%, 70%, 85 5%), (L:D 8:16, 10:14, 12:12, 14:10, 16:8). As temperature increased from 20 °C, immature developmental duration (from 19.8 11.0 d), egg load 263.8 100.8), adult size 0.75 0.72 0.66 0.65 mm female male, respectively), longevity 28.43 24.98 5.03 5.3 d respectively) significantly reduced, while parasitism rates remained stable (56.8% 66.3%) but emergence decreased above 26 °C 93% 75%). Higher (>70%) improved (87% 93%), sex ratios (0.63), (278), (above 10 male 14 female), with no significant effect (65% 69%). highest rate (65%), ratio (278) occurred under 14:10 photoperiod, (81% 87%) unaffected by changes. Collectively, optimal conditions development reproduction identified 70% RH.

Language: Английский

Chromosome-level genome assembly of an endoparasitoid Cotesia ruficrus DOI Creative Commons
Xianxin Zhao, Yuanyuan Liu, Xinhai Ye

et al.

Scientific Data, Journal Year: 2025, Volume and Issue: 12(1)

Published: March 26, 2025

Cotesia ruficrus is a gregarious larval endoparasitoid of many important agricultural pest moths, such as the fall armyworm, northern armyworm and rice leaffolder. While eight genomes had been reported, high-quality genomic data C. has yet to be performed. This study presents chromosome-scale genome assembly ruficrus, utilizing both PacBio HiFi-reads Hi-C reads. The size about 185.3 Mb harboring 10 chromosomes, 209 unanchored scaffolds with scaffold N50 length 15.81 Mb. anchored rate sequences chromosomes 95.55%. A total 14,001 genes have annotated. work delivers first high-quality, for enriching datasets comparative evolutionary studies within genus. Additionally, it offers valuable resource future biological genetic research, well enhancing management strategies, control.

Language: Английский

Citations

0
Effects of temperature, relative humidity, and photoperiod on life history of Cotesia ruficrus (Hymenoptera: Braconidae), an indigenous parasitoid of Spodoptera frugiperda (Lepidoptera: Noctuidae) DOI
Wenqin Yang, Xian Li, Fanxin Meng

et al.

Journal of Economic Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract The indigenous parasitoid Cotesia ruficrus (Haliday) (Hymenoptera: Braconidae) shows promise as a biological control agent for managing the invasive fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in China. However, influence of environmental factors on C. performance remains poorly understood. This study aimed to investigate effects temperature, relative humidity, and photoperiod life history ruficrus. life-history traits were measured at 5 different temperatures (20, 23, 26, 29, 32 ± 1 °C), 4 RH levels (40%, 55%, 70%, 85 5%), (L:D 8:16, 10:14, 12:12, 14:10, 16:8). As temperature increased from 20 °C, immature developmental duration (from 19.8 11.0 d), egg load 263.8 100.8), adult size 0.75 0.72 0.66 0.65 mm female male, respectively), longevity 28.43 24.98 5.03 5.3 d respectively) significantly reduced, while parasitism rates remained stable (56.8% 66.3%) but emergence decreased above 26 °C 93% 75%). Higher (>70%) improved (87% 93%), sex ratios (0.63), (278), (above 10 male 14 female), with no significant effect (65% 69%). highest rate (65%), ratio (278) occurred under 14:10 photoperiod, (81% 87%) unaffected by changes. Collectively, optimal conditions development reproduction identified 70% RH.

Language: Английский

Citations

0