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Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

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Subject: Entomology × Author: Rathee, Mandeep × End date: 2023 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Effect of cold storage on some biological characteristics of parasitoid, Aenasius bambawalei Hayat (Hymenoptera: Encyrtidae)
    (CCSHAU, 2014) Rathee, Mandeep; Pala Ram
    The present studies on cold storage and overwintering of Aenasius bamabawalei were carried out during 2012-13 both in the laboratory as well as in the screen house of the Department of Entomology, CCS Haryana Agricultural University, Hisar to generate information on effect of cold storage of the parasitoid, A. bambawalei in different stages for different durations at different temperatures on its biological parameters and to evaluate the survival of the parasitoid during winter season. Studies on cold storage of the parasitoid were carried out by storing one-day-old Phenacoccus solenopsis mummies (i.e. in pupal stage) and freshly emerged adults at four storage temperatures i.e. 5, 10, 15 and 20°C for 1 to 8 weeks. It was found that the parasitoid A. bambawalei can be stored in pupal stage (i.e. in the mummies of P. solenopsis) for 1 week at 5°C and for 2 weeks each at 10 and 15°C, respectively, without any significant effect on the key biological parameters like emergence, longevity, fecundity and sex-ratio (F1 progeny). Emergence of the adults occurred within first week during storage at 20°C, hence, this temperature was not suitable for storing the parasitoid in pupal stage. Females took more time to emerge from the mummies stored for different durations at 5, 10 and 15°C as compared to males. The parasitoid adults of A. bambawalei can be stored only for 1 week at 10°C without any significant affect on the key biological parameters like survival, longevity, fecundity and sex-ratio (F1 progeny). The parasitoid A. bambawalei can be stored at low temperatures both in pupal and adult stages. However, it can be stored safely for longer duration in pupal stage as compared to adult stage. Emergence of parasitoid adults from overwintering mummies started from 11th standard week (first week of February), being maximum in 14th standard week (first week of March) and continued until 16th standard week (third week of March) when all the parasitoid adults had emerged. Maximum temperature ranged between 20.3 to 29.6oC and minimum between 6.6 to 12.5°C during the period of adult emergence. Honey fed parasitoid adults i.e. males survived for 52-84 days (69.33 days) and females survived for 69-103 days (83.40 days) during winter season in absence of host, when exposed on 5th December. The results of the present studies may be helpful in mass rearing and conservation of the parasitoid.
  • Thumbnail Image
    ThesisItemOpen Access
    Effect of cold storage on some biological characteristics of parasitoid, aenasius bambawalei hayat (Hymenoptera: Encyrtidae)
    (CCSHAU, 2014) Rathee, Mandeep; Pala Ram
    The present studies on cold storage and overwintering of Aenasius bamabawalei were carried out during 2012-13 both in the laboratory as well as in the screen house of the Department of Entomology, CCS Haryana Agricultural University, Hisar to generate information on effect of cold storage of the parasitoid, A. bambawalei in different stages for different durations at different temperatures on its biological parameters and to evaluate the survival of the parasitoid during winter season. Studies on cold storage of the parasitoid were carried out by storing one-day-old Phenacoccus solenopsis mummies (i.e. in pupal stage) and freshly emerged adults at four storage temperatures i.e. 5, 10, 15 and 20°C for 1 to 8 weeks. It was found that the parasitoid A. bambawalei can be stored in pupal stage (i.e. in the mummies of P. solenopsis) for 1 week at 5°C and for 2 weeks each at 10 and 15°C, respectively, without any significant effect on the key biological parameters like emergence, longevity, fecundity and sex-ratio (F1 progeny). Emergence of the adults occurred within first week during storage at 20°C, hence, this temperature was not suitable for storing the parasitoid in pupal stage. Females took more time to emerge from the mummies stored for different durations at 5, 10 and 15°C as compared to males. The parasitoid adults of A. bambawalei can be stored only for 1 week at 10°C without any significant affect on the key biological parameters like survival, longevity, fecundity and sex-ratio (F1 progeny). The parasitoid A. bambawalei can be stored at low temperatures both in pupal and adult stages. However, it can be stored safely for longer duration in pupal stage as compared to adult stage. Emergence of parasitoid adults from overwintering mummies started from 11th standard week (first week of February), being maximum in 14th standard week (first week of March) and continued until 16th standard week (third week of March) when all the parasitoid adults had emerged. Maximum temperature ranged between 20.3 to 29.6oC and minimum between 6.6 to 12.5°C during the period of adult emergence. Honey fed parasitoid adults i.e. males survived for 52-84 days (69.33 days) and females survived for 69-103 days (83.40 days) during winter season in absence of host, when exposed on 5th December. The results of the present studies may be helpful in mass rearing and conservation of the parasitoid.