Studies were conducted on some aspects of the biology of
Chilo aleniellus (Strand) and Sesamia nonagrioid.es
botanephaga Tams and Bowden in Southern Ghana. The life
cycle of S. n. botanephaga revealed 8 developmental
stages; the egg, 5 larval instars, a prepupa and a pupa.
Female S. n. botanephaga was found to lay 330 ± 17.7 eggs
within a period of 5 days. She required three surfaces to
lay her eggs, which were mainly deposited, on the inner
side of the leaf sheath fitting tightly on to the maize
stem. The mated females laid more eggs per female (33 0 ±
17.7 eggs) than the virgin female (2 68 ± 9.2 eggs) . The
incubation period of the eggs of S. n. botanephaga was
found to be 5.23 ± o.o3 (5-7) days in the laboratory. The
mean larval duration was 29 days and the prepupal period
lasted for 2.00 ± 0.01(1 - 3) days. The first instar
larvae dispersed in 1-3 days after hatching. The third,
fourth, fifth, and sixth instar larvae fed actively
producing large quantities of frass. Pupae frequently
occurred close to the exit hole (less than 6 cm) . The
pupal period varied from 6 to 10 days. The life cycle of
S. n. botanephaga was completed in 38.2 ± 0.28 (29 - 50)
days. Adults of S. n. botanephaga lived for four to ten
days. The adults reared in the laboratory showed a sex
ratio of 2:3(male: female) which was significantly
different from the expected ratio(1:1)(male: female).
Female C. aleniellus laid no egg in the laboratory when
paired or single. No mating was observed in the adults of
C . aleniellus. The larva of C. aleniellus went into diapause
in the minor cropping season in December 1998 and came out
of diapause in the beginning of the major cropping season
in April 1999. Adults from the field collected larvae
showed a sex ratio of 1:1(male: female) with no significant
difference between the number of male§Jand females.
Edu, F (2021). Some Aspects Of The Biology Of Sesamxa Nonagroides Botanephaga And Chilo Aleniellus in Southern Ghana.. Afribary.com: Retrieved April 11, 2021, from https://afribary.com/works/some-aspects-of-the-biology-of-sesamxa-nonagroides-botanephaga-and-chilo-aleniellus-in-southern-ghana
Frontiers, Edu. "Some Aspects Of The Biology Of Sesamxa Nonagroides Botanephaga And Chilo Aleniellus in Southern Ghana." Afribary.com. Afribary.com, 04 Apr. 2021, https://afribary.com/works/some-aspects-of-the-biology-of-sesamxa-nonagroides-botanephaga-and-chilo-aleniellus-in-southern-ghana . Accessed 11 Apr. 2021.
Frontiers, Edu. "Some Aspects Of The Biology Of Sesamxa Nonagroides Botanephaga And Chilo Aleniellus in Southern Ghana.". Afribary.com, Afribary.com, 04 Apr. 2021. Web. 11 Apr. 2021. < https://afribary.com/works/some-aspects-of-the-biology-of-sesamxa-nonagroides-botanephaga-and-chilo-aleniellus-in-southern-ghana >.
Frontiers, Edu. "Some Aspects Of The Biology Of Sesamxa Nonagroides Botanephaga And Chilo Aleniellus in Southern Ghana." Afribary.com (2021). Accessed April 11, 2021. https://afribary.com/works/some-aspects-of-the-biology-of-sesamxa-nonagroides-botanephaga-and-chilo-aleniellus-in-southern-ghana