Behavior and development time of Edessa meditabunda (F.) (Hemiptera; Pentatomidae)
Adults of Edessa meditabunda (F.) were collected in commercial and experimental soybean (Glycine max(L.) Merrill) fields located at the central western region of Venezuela. Bugs were reared under laboratory conditions (27 plus or minus 2 degree C) and fed with fresh pod bean (Phaseolus vulgaris L.)....
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Veröffentlicht in: | Revista de la Facultad de Agronomía. Universidad Central de Venezuela 1999-12, Vol.25 (2), p.149-158 |
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Sprache: | spa |
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Zusammenfassung: | Adults of Edessa meditabunda (F.) were collected in commercial and experimental soybean (Glycine max(L.) Merrill) fields located at the central western region of Venezuela. Bugs were reared under laboratory conditions (27 plus or minus 2 degree C) and fed with fresh pod bean (Phaseolus vulgaris L.). Daily observations of 24 egg masses were made. Females oviposited mainly over pod beans (45.83%). The 83.33% of the egg masses had 14 eggs arranged in two parallel rows. The average development time (days) was: Egg 4.72; I instar 5.43; II instar 8.98; III instar 7.23; IV instar 8.03; V instar 11.35. The average percentage of mortality was: Egg 11.05; I instar 29.91; II instar 17.70; III instar 10.65; IV instar 11.62; V instar 10.96. The average longevity (days) was 33.05 for males and 34.72 for females. The sex ratio male: female was 2.04:2.5. The average duration (days) of oviposition and postoviposition was 1.86 and 3.23 respectively. The average of eggs per female was 2.2. |
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ISSN: | 0041-8285 |