Effect of different cole crops on the biological parameters of Pieris brassicae (L.) (Lepidoptera: Pieridae) under laboratory conditions

Abstract

The effect of different cole crops was studied on biological parameters of Pieris brassicae (L.) in the laboratory at 28 ˚C, 65% RH, and 12L:12D photoperiod. The results indicated that host plants significantly affected the life history , i.e. survival of developmental stages, oviposition period, and sex ratio of P. brassicae. Comparative study on different host plant revealed that P. brassicae required a maximum of 40 days to complete generation on cabbage, cauliflower, and broccoli. The survivorship and expectation of life declined gradually with the advancement of age; the life expectancy of newly deposited eggs was 23.96 days while it was 8.12 days at the time of adult emergence on cabbage. However, the fluctuations of mortality parameter were seen on all the cole crops. On cabbage, 100% hatching of eggs with low larval mortality were noticed. The highest net reproductive rate (R0) occurred on cauliflower, i.e. 27.1 followed by cabbage 24.89, females per female per generation. Intrinsic rate of increase (rm), was found to be highest (0.09558954) on cauliflower followed by broccoli and cabbage, 0.078886 and 0.077551 females per female per day, respectively. The smallest rm (0.059469 females per female per day) occurred on radish which shows that P. brassicae did not perform well on radish. In addition, P. brassicae may double in 7.2 days on cauliflower, 8.7 days on broccoli, and 8.9 days on cabbage. The sex ratio was computed as 1.5:1, female:male, respectively on cabbage.

Demographic Analysis of the Fitness of <I>Problepsis superans</I> (Lepidoptera: Geometridae) Feeding on Three Ligustrum (Lamiales: Oleaceae) Species

“…The effects of a host plant on different life history traits of insects, including larval and postlarval development have been proven for various insects, such as Diaphorina citri (Kuwayama) (Homoptera: Psyllidae) (Tsai and Liu 2000), Aphis spiraecola Patch (Homoptera: Aphididae) (Tsai and Wang 2001), Erinnyis ello (L.) (Lepidoptera: Sphingidae) (Barrigossi et al 2002), Spodoptera litura (F.) (Lepidoptera: Noctuidae) (Pansaree et al 2006, Xue et al 2010, Ennomos subsignarius Hü bner (Lepidoptera: Geometridae) (Ryall 2010), and Pieris brassicae (L.) (Lepidoptera: Pieridae) (Hasan and Ansari 2010).…”

Seasonal Incidence and Management of Cabbage White Butterfly, Pieris brassicae (Linnaeus) (Lepidoptera: Pieridae) on Cabbage Crop

“…A single larva can consume about 74 to 80 cm 2 leaf area (Younas et al, 2004). In cruciferous vegetables, this pest alone causes 40 per cent yield loss annually in India (Hasan and Ansari, 2010). As a result of feeding, the plants either fail to form compact cabbage heads or produce deformed heads (Uddin et al, 2007).…”

Developmental Response of &lt;i&gt;Pieris brassicae&lt;/i&gt; (L.) (Lepidoptera: Pieridae) on Different Cauliflower Cultivars under Laboratory Conditions

“…The total development period ranges from 32 -64 days over three generations [10]. P. brassicae completes its generation in 40 days on cabbage, cauliflower and broccoli [5]. While none of the cultivars was found immune to P. brassicae.…”

“…It affects the survival rate of developmental stages, sex ratio, and oviposition period [5]. The overall developmental period of P. brassicae larvae under both laboratory and field conditions was significantly higher on yellow sarson (38 to 43 and 36 to 40 days) and lower on cabbage (32.35 to 35.95 and 31.17 to 35.07 days).…”

“…Furthermore, P. brassicae had the highest generation mortality on yellow sarson (0.3565 and 0.3645) and lowest on cabbage (0.2555 and 0.2486) under laboratory and field conditions [6]. The highest net reproductive rate (R 0 ) of 27.1 occurred on cauliflower followed by cabbage 24.89 [5].…”