Population dynamics and new record of larval parasitoids, Senometopia sp. and Winthemia sumatrensis (Townsend) (Diptera: Tachinidae) on banana skipper, Erionota torus Evans (Lepidoptera: Hesperiidae) from South Karnataka
DOI:
https://doi.org/10.18311/jbc/2018/18744Keywords:
Banana, Erionota torus, population dynamics, Senometopia sp., Winthemia sumatrensisAbstract
Field study was conducted for two years (2014-16) to know the population dynamics of banana skipper, Erionota torus Evans (Lepidoptera: Hesperiidae) and its tachinid parasitoids, Senometopia sp., and Winthemia sumatrensis. The pooled data over the two years indicated that the skipper plant infestation ranged from 6.66 to 84.25 per cent and incidence started during the first fortnight of August (8.34 per cent incidence) when the crop was at broadleaf follower stage, and a gradual increase in the infestation level of skipper was observed with a peak activity (84.25 per cent incidence) during first fort night of January (Pre flowering period) and also extended to the flowering period (February to March). The pooled data over the years indicated the maximum incidence was recorded during pre flowering period with a mean infestation of 75.02 per cent followed by flowering period (45.67 per cent), broad leaf followers (29.58 per cent) and bunch period (1.66 per cent). Two tachinid parasitoids Senometopia sp., and W. sumatrensis were encountered during our two years study period. The larval parasitoids activity initiated from second fortnight of September (0.62 per cent) and reached its maximum population during second fortnight of November (7.25 per cent) and later parasitoid activity gradually declined till second fortnight of January (0.62 per cent). The maximum activity was noticed during pre flowering period with a mean of 3.27 per cent parasitization by Senometopia sp., and W. sumatrensis.Downloads
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Accepted 2018-04-18
Published 2018-07-13
References
Bhumannavar BS, Viraktamath CA. 2001. Seasonal incidence and extent of parasitization of fruit piercing moths of the genus Othreis (Lepidoptera: Noctuidae). J Biol Control 15:31–38.
Chiang HS, Hwang MT. 1991. The banana skipper, Erionota torus (Hesperiidae: Lepidoptera): establishment, distribution, and extent of damage in Taiwan. Tropical Pest Mgmt. 37: 207–210. https://doi. org/10.1080/09670879109371583
Okolle JN, Mashor M, Ahmad AH. 2006. Spatial distribution of banana skipper (Erionota thrax L.) (Lepidoptera: Hesperiidae) and its parasitoids in a Cavendish banana plantation, Penang, Malaysia. Insect Sci. 13:381–389. https://doi.org/10.1111/j.1744-7917.2006.00107.x
Okolle JN, Ahmad AH, Mansor M. 2010. Bioecology and management of the banana skipper (Erionota thrax). Tree and For Sci and Biotech. 4: 22–31.
Ostmark HE. 1974. Economic insect pests of banana. Annu Rev Entomol. 19:161–176. https://doi.org/10.1146/ annurev.en.19.010174.001113
Robinson JC, Sauce VG. 2010. Bananas and Plantains. 2nd Ed. CAB International. pp. 312. https://doi. org/10.1079/9781845936587.0000 PMid:20557503
Sharanabasappa, Kalleshwaraswamy CM, Adivappar N, Lavanya MN. 2016. Population dynamics and natural enemies of Erionota torus Evans (Lepidoptera: Hesperiidae) on two cultivars of banana in Karnataka. Pest Mgmt Hort Ecosyst. 22: 34-39.
Shima H. 1996. A systematic study of the tribe Winthemiini from Japan (Diptera: Tachinidae). Beitr Ent. 46: 169–235.
Sivakumar T, Jiji T, Anitha N. 2014. Field observations on banana skipper Erionota thrax L. (Hesperiidae: Lepidoptera) and its avian predators from southern peninsular India. Current Biotica 8(3): 220–227.
Soumya KC, Sajeev TV, Maneetha, TK, Vijayan K, Mathew G. 2013. The incidence of Erionota thrax (Hübner) (Lepidoptera: Hesperiidae) as a pest of banana in Kerala. Entomon 38: 53–58.
Vevai EJ. 1971. Know your crop, its pest problems, and control. Pesticides 5: 38–56.