1
Which of the followings are multivoltine 2
(A) . Bombyx mori
(B) . Antheraea mylitta
(C) . Philosamia ricini
(D) . Antheraea assamensis
Choose the correct answer from the options given below:
EXPLANATION
Silkworm Genetics, Races, Voltinism, & Sex-Li
- Voltinism in Silkmoths:
- Voltinism: Refers to the number of generations/broods an insect completes within a single calendar year:
- Bombyx mori: Tropical mulberry silkworms (e.g., Pure Mysore) are multivoltine, completing 5–6 generations per year without entering diapause.
- Philosamia ricini (Eri silkworm): Non-mulberry castor-feeding saturniid moth; completely non-diapausing and multivoltine (5–6 generations/year).
- Antheraea assamensis (Muga silkworm): Semi-domesticated golden silk moth endemic to Assam; multivoltine (5–6 crops/year: Kotia, Jethua, etc.).
- Wild Tasar (Antheraea mylitta): Typically univoltine or bivoltine.
- Conclusion: Multivoltine species are (A), (C), and (D) only (Option 4).
Correct option: (4) (A), (C) and (D) only.
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