Titre :
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Reproduction, survival rate and longevity of apterous parthenogenetic females of Pea Aphid, Acyrthosiphon pisum (Harris) (Homoptera: Aphididae), on chemically-defined artificial diets with different sucrose concentration and p H.
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Auteurs :
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S. Yamada ;
K. Honda
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Type de document :
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article/chapitre/communication
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Année de publication :
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1998
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Format :
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88-90
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Langues:
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Japonais
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Mots-clés:
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Pea Aphid
;
Acyrthosiphon pisum
;
survival rate
;
reproduction
;
artificial diet
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Résumé :
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Apterous parthenogenetic females of the Pea Aphid collected in the Tokachi district of Hokkaido Island (Tokachi strain) were reared on chemically-defined artificial diets with different sucrose concentration and p H (25-55 g/100 mi, PH 6-10), after two days of reproduction on broad-bean seedlings, Vicia faba L., at 15 +/- 1 degrees C, under 16 L: 8 D. Survival rate, longevity and the number of offspring per aphid were maximum when reared on a diet of 45 g/100 mi sucrose concentration and p H 8.3. The survival rate (75%) at the 10 th day of rearing and the mean longevity (17.8 +/ 2.0 days) of the aphids on the best artificial diet were not significantly different from the values for aphids reared on broad bean (85.7% and 20.5 +/- 1.7 days, respectively). The mean number of offspring (32.0 +/- 2.4) per diet-reared aphid was 45.3% of the value for aphids reared on broad bean. In our experiments, the best combination of sucrose concentration and p H for the artificial diet for the Pea Aphid (Tokachi strain) is different from the results of Akey and Beck (1972) for the same species (Wisconsin strain). This indicates that there are variations in optimum sucrose concentration and p H for artificial diet between aphid strains.
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Source :
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Japanese Journal of Applied Entomology and Zoology - 0021-4914, vol. 42, n° 2
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