Sains Malaysiana 41(12)(2012): 1543–1548

 

Effects of Honey and Sucrose on Longevity and Fecundity of

Apanteles metesae (Nixon), a Major Parasitoid of the Oil Palm Bagworm,

Metisa plana (Walker)

(Kesan Madu dan Sukrosa ke atas Jangka Hayat dan Kesuburan Apanteles metesae (Nixon),

Parasitoid Utama Ulat Bungkus Kelapa Sawit, Metisa plana (Walker))

 

 

Salmah Mohamed

Department of Agriculture Science, Faculty of Agriculture and Biotechnology

Universiti Sultan Zainal Abidin, Kampus Gong Badak

21300 Kuala Terengganu. Terengganu, Malaysia

 

Mohd Basri Wahid

Malaysian Palm Oil Board (MPOB), P.O. Box 10620

50720 Kuala Lumpur, Malaysia

 

Idris Abd. Ghani*

School of Environmental and Natural Resource Sciences, Faculty of Sciences and Technology

Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

 

Diserahkan: 4 Januari 2011 / Diterima: 21 Julai 2012

 

ABSTRACT

The effects of various concentrations of honey and sucrose on the longevity and fecundity of Apanteles metesae (Nixon), an endoparasitoid of oil palm bagworm, Metisa plana (Walker) (Lepidoptera: Psychidae) were studied in the laboratory. Our results showed that there were a significant difference (p<0.05) in the longevity of A. metesae fed on various concentrations of honey solutions. Longevity of A. metesae was significantly longer when fed on 50% honey than on pure honey. Nonetheless, longevity of A. metesae females when fed on 50% honey was relatively longer than other honey concentrations. The parasitoid lived significantly longer when fed on 20% sucrose than fed on 50% sucrose and distilled water. However, the parasitoid fed on 50% honey had a longevity that was statistically similar to 20% sucrose and 50% sucrose. Fecundity of A. metesae differed significantly (p<0.05) when fed on 50% honey, 20% sucrose and 50% sucrose. The highest and lowest fecundity was when the parasitoids fed on 20% sucrose and distilled water, respectively. Overall, the result showed that 20% sucrose was a more suitable diet for A. metesae females as compared with other diets.

 

Keywords: Apanteles metesae; diet; fecundity; longevity; Metisa plana

 

ABSTRAK

Kesan pelbagai larutan madu dan sukrosa terhadap jangka hayat dan kesuburan Apanteles metesae (Nixon), sejenis endoparasitoid ulat bungkus kelapa sawit, Metisa plana (Walker) (Lepidoptera: Psychidae) telah dikaji di dalam makmal. Hasil menunjukkan bahawa terdapat perbezaan yang bererti (p<0.05) terhadap jangka hayat A. metesae yang diberi makan pelbagai kepekatan larutan madu. Jangka hayat A. metesae adalah lebih lama secara bererti apabila diberi makan 50% madu berbanding madu asli. Meskipun begitu, jangka hayat A. metesae betina yang diberi makan 50% madu adalah lebih lama daripada kepekatan madu yang lain. Parasitoid hidup lebih lama secara bererti apabila diberi makan 20% sukrosa berbanding yang diberi makan 50% sukrosa dan air suling. Namun, parasitoid yang diberi makan 50% madu mempunyai jangka hayat yang setara secara statistik dengan 20% sukrosa dan 50% sukrosa. Kesuburan A. metesae berbeza secara bererti (p<0.05) apabila diberi makan 50% madu, 20% sukrosa dan 50% sukrosa. Kesuburan paling tinggi dan paling rendah masing-masing adalah apabila diberi makan 20% sukrosa dan air suling. Secara keseluruhannya, hasil kajian telah menunjukkan bahawa 20% sukrosa adalah diet yang lebih sesuai untuk A. metesae betina berbanding diet-diet yang lain.

 

Kata kunci: Apanteles metesae; diet; jangka hayat; kesuburan; Metisa plana

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*Pengarang untuk surat-menyurat; email: idrisgh@ukm.my