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Journal of Entomology

Year: 2018 | Volume: 15 | Issue: 1 | Page No.: 13-18
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Authors

Fri Maulina

Fri Maulina

Novri Nelly

Hidrayani

Hasmiandy Hamid

Keywords

Research Article

Temperature as a Key Aspect in the Survival of Hadronotus leptocorisae Offspring

Fri Maulina Fri Maulina's LiveDNA, Novri Nelly, Hidrayani and Hasmiandy Hamid
Background and Objective: Temperature and survival of a parasitoid egg before it reaches the adult stage are some of the most important biological parameters that must be understood to effectively and efficiently perform parasitoid mass rearing in a laboratory. The objectives of this study were to determine the best maintenance tube size for the longevity of the adult parasitoid, Hadronotus leptocorisae (H. leptocorisae), to determine the survival rate of the eggs laid by this parasitoid and to determine the fitness and sex ratio of the offspring. Materials and Methods: The eggs of Leptocorisa oratorius (L. oratorius) were collected from paddy fields in Sungai Sapih, Padang city and the experiments were carried out in a laboratory at 25°C and at room temperature. Data on the temperature differences were analyzed by a t-test and the various tube sizes were analyzed by a completely randomized design with STATISTIC 8.0 programs. A descriptive method was used to present fitness data. Results: The ideal maintenance temperature to ensure longevity of the parasitoid Hadronotus leptocorisae is 25°C. The tube size used at that temperature is not significantly affected. The mean survival of eggs laid by a female H. leptocorisae until adulthood was 68.2%. The mean longevity of males and females was 13.7±3.2 and 15.5±3.2 days, respectively. The mean male parasitoid body size was 1.0±0.1 mm long and 0.5±0.1 mm wide and the average female parasitoid size was 1.1±0.1 mm long and 0.5±0.1 mm wide. The percentage of parasitoid males was 30%. Conclusion: The best condition for rearing with a high survival rate is 25°C with no specific tube size.
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