Breeding and seasonal incidence of mango hoppers.
Dalvi C. S., Dumbre R. B.
Author Affiliation: Department of Entomology, Konkan Krishi Vidyapeeth, Dapoli - 415 712 (MS), India.
Bulletin of Entomology (New Delhi) 35 : 1-10
Abstract : Field studies carried out in Dapoli, Maharashtra, India, showed that Amritodus atkinsoni and Idioscopus niveosparsus bred three times a year in June to July and October to November on the vegetative flush and from December to April on the flowering parts of mango. I. nagpurensis bred only once a year during the flowering season from January to April. Amrasca splendens bred exclusively on the vegetative flush throughout the year. Populations of A. atkinsoni and L. niveosparsus gradually decreased from April to May after which they increased slightly in June-July as the pest bred on the vegetative flush. Thereafter, their population declined in August to September as breeding ceased. The population again increased from October to November after which time it declined. Again, populations of these two species increased remarkably from mid-December onwards as the pests bred profusely on flower panicles and reached their peaks in the third week of March and the second week of February, respectively, after which time populations declined gradually until the end of March and April, respectively, as their breeding ceased. The I. nagpurensis population increased from the first week of January with the initiation of flowering and reached its peak in the third week of March after which time it declined gradually from mid-April onwards and the population level remained low until the end of December as breeding ceased. There was no significant increase in the population of A. splendens during the year.