Insect predators are general feeders of sucking insects especially mealybugs, aphids, thrips due to their polyphagous needs. In the field conditions when the weather conditions tend to move towards this range of temperature combinations during the crop season, the farmers should be more cautious and frequently monitor the paddy crop to assess economic threshold level of BPH for timely remedial measures. lugens thrive well at 33:19☌ followed by 27:12☌ temperature combinations. The relatively high values of population growth parameters suggest that N. Generation time decreases significantly with increase in temperature. The net reproductive rate (163.49) and intrinsic rate of increase (0.1993 females female − 1 day − 1 ) were maximum at 33:19☌. Various life table parameters like net reproductive rate, true generation time, true intrinsic rate of increase, finite rate of increase, doubling time and weekly multiplication rate of the pest also varied significantly among population at different temperature combinations. Optimum temperature range lies between 27:12☌ and 33:19☌ as fecundity (102 ± 8.50, 112 ± 3.75), per cent egg hatchability (86.86 ± 1.21, 87.14 ± 1.99) and viability of fifth nymphal instar (57.4 ± 4.02, 58.20 ± 3.76) (mean ± standard error) respectively, were recorded higher than other temperature combinations. lugens were influenced at different temperature combinations. Different biological parameters like number of days for development, nymph survival, oviposition rate, adult longevity and reproductive parameters of N. The biology and life table parameters of this pest were studied at five set of controlled temperature combinations as 23:9, 27:12, 33:19, 36:23 and 39:27☌ with 75 ± 5 per cent humidity and 14 h photoperiod under laboratory conditions. Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) is one of the major insect pests of paddy crop which significantly reduces the quality and quantity of yield. A linear correlation curve showed the dependency of predation on the developmental period of C. septempunctata was significantly higher on L. The predation by female of all aphid species was more as compared to male. The last larval stage (grub 4), irrespective of aphid species, devoured more aphids than the other grub stages. With regard to predation, the grubs consumed maximum H. Between the sexes, the female required longer period for its development than male with respect to all aphid species. Nonetheless, the adult longevity was higher on L. The grubs, however, required significantly longer developmental period on H. septempunctata was found significantly longer on L. Internet Archive Reference page.The performance of Coccinella septempunctata was investigated on five-aphid species viz., Lipaphis erysimi, Aphis craccivora, Hyadaphis coriandri, Rhopalosiphum nymphae and Macrosiphum rosae under controlled conditions (25☑☌, 70±5% RH and 12 h L: 12 h D). The Coccinellidae or ladybeetles of the Koebele collection–Part I. Insectorum species novae aut minus cognitae, descriptionibus illustratae.
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