Suitability of Two Prey Species for Development, Reproduction, and Survival of Tenuisvalvae notata (Coleoptera: Coccinellidae)

Author:

Barbosa Paulo R R1,Oliveira Martin D1,Giorgi José A2,Oliveira José E M3,Torres Jorge B1

Affiliation:

1. Departamento de Agronomia — Entomologia, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE

2. Faculdade de Ciências Biológicas, Universidade Federal do Pará. Rua José Porfírio, 2515, São Sebastião, CEP 68372-040, Altamira, PA

3. Embrapa Semiárido, BR 428, Km 152, Zona Rural, CEP 56302-970, Petrolina, PE

Abstract

Abstract The coccinellid Tenuisvalvae notata (Mulsant) (Coleoptera: Coccinellidae) has been observed recently in association with the striped mealybug Ferrisia virgata Cockerell (Hemiptera: Pseudococcidae) and the false cochineal scale Dactylopius opuntiae Cockerell (Hemiptera: Dactylopiidae) in the semiarid region of Pernambuco, Brazil. The latter species are important pests of cotton and prickly pear, respectively. In this study, we tested the two scale insects as prey for T. notata. In addition, eggs of Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) were tested as possible alternative prey for rearing T. notata. In this work, the survivorship, reproduction, and predation of T. notata were investigated. The coccinellid T. notata was able to complete development only on F. virgata with 83% larval and pupal viability. Females of T. notata fed F. virgata produced 7.6 eggs a day with an eclosion rate of 61.9%. No oviposition occurred while feeding on A. kuehniella eggs. The highest consumption rate of F. virgata occurred during the last larval instar. Our results support the use of T. notata as an agent for the biological control of F. virgata, a highly polyphagous pest worldwide.

Publisher

Oxford University Press (OUP)

Subject

Insect Science

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