Vol. 8, Issue 6 (2020)
Studies on biology and morphometrics of fruit borer, Etiella sp. (Lepidoptera: Pyralidae) on mango under laboratory conditions
Author(s): SM Parmar, Dr. ZP Patel, SG Parmar and Dr. NK Gajre
Abstract: A study was carried out on the biological parameters of Etiella sp in the laboratory of Food Quality Testing Laboratory Fruit Research Station, Gandevi, Navsari Agricultural University during 2008 to 2009. The eggs were found to be laying singly or in batches near the peduncle of fruit. The freshly laid eggs were oval in shape and pale yellowish or dirty white in colour which changed to dark yellowish prior to hatching. Average length and breadth of egg was 0.63± 0.03 mm and 0.39±0.03 mm, respectively. The incubation period of eggs ranged from 3 to 5 days with 74.16±7.28 per cent of hatchability. The larvae passed through five instars. The average duration of first, second, third, fourth and fifth instar was 1.45±0.51, 2.45±0.51, 3.40±0.50, 5.40±0.50 and 3.50±0.51 days, respectively. The total larval period completed in 16.20±1.40 days. The Pupation took place in earthen cocoon in soil and the pupal period was of 9.85±0.81 days. The female and male adults measured on an average 13.20±0.73 mm and 10.24±0.73 mm in length and 2.86±0.14 mm and 2.50±0.12 mm in breadth, respectively. The pre oviposition, oviposition and post oviposition periods were of 2.40±0.50, 2.25±0.97 and 1.80±0.70 days, respectively. The average fecundity of female recorded as 24.55±8.75 eggs. The longevity of male and female was 4.45±1.10 days and 6.14±1.14 days, respectively. The total life cycle occupied 22 to 31 days (Av.26.62±2.57 days) by male and 25 to 33 days (Av. 28.90±2.11 days) by female.
DOI: 10.22271/chemi.2020.v8.i6ac.11060
Pages: 2017-2021 | 360 Views 72 Downloads
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How to cite this article:
SM Parmar, Dr. ZP Patel, SG Parmar, Dr. NK Gajre. Studies on biology and morphometrics of fruit borer, Etiella sp. (Lepidoptera: Pyralidae) on mango under laboratory conditions. Int J Chem Stud 2020;8(6):2017-2021. DOI: 10.22271/chemi.2020.v8.i6ac.11060
