Eggs were harvested during spans of 6 h maximum (10:00–
16:00 h), commencing 11 days after adult emergence. Eggs
were collected using a 1 L clear plastic container filled with
30 mL of apple juice and covered with cling-wrap plastic film
(without perforations) held in place with a rubber band. Eggs
were harvested, filtered with a fine mesh and transferred onto
filter paper (9 cm diameter, Whatman no. 1)