Studies on occurrence of egg surface fungi in Muga and Eri silkworm during summer crops

Abstract :

Muga (Antheraea assamensis Helfer) and Eri silkworm (Samia ricini Donovan) are multivoltine  lepidopteran insect. The silkworms can be reared five to six crop in a year. Aherua (June-July) and Bhodia (August-September) are the main seed crops of muga and eri silkworm which are link with Katia  commercial crop. Generally hatching problem was observed in muga and eri silkworms eggs in summer crops. Therefore, a study was undertaken to find out the association of different fungal species on egg surface of muga and eri silkworm  during these two seed crops. Standard Blotter technique and Agar plate method were used for isolation of egg surface fungi in muga and eri silkworms. Results showed that 10 different fungal species were isolated from muga silkworm eggs in both the seed crops. Similarly 8 different fungal species were  isolated from the  eri silkworm eggs. Among the different fungal species Chetomonium sp., Fusarium oxysporum, F. monoliformae, F. solani, Aspergillus flavus, Aspergillus sp.  Penicillium citrinum and Phoma humicola were common to  eggs of both the silkworm

Keyword :

Antheraea assamensis, commercial, egg, hatching, Samia  ricini

Author(s) : Das, R., Das, K., Sarkar, B. N.
Downloads : 597
Published Issue : 2018 Vol. 13 Number 2

2018 Vol. 13 Number 2