Reduction of reproductive capacity of Spodoptera littoralis males by a nuclear polyhedrosis virus (NPV)

Potential for biocontrol of house flies,Musca domestica,using fungal biopesticides

“…In all experiments, the infections caused more than 90% reduction in per capita life-time female fecundity. Similar impacts on female reproductive output have been documented in several other insect-fungus systems (Afity & Mattler, 1969;Fargues, Delmas, Auge, & Lebrun, 1991;Mathews, Smith, & Edwards, 2002;Santiago-Alvarez & Vargas-Osuna, 1988). While the impact on lifetime reproduction clearly derived in part from reduced female lifespan, per capita fecundity of infected females over the first few days of the experiment also showed a 70-80% reduction in egg production compared to control populations over the same period.…”

Virulence, horizontal transmission, and sublethal reproductive effects of Metarhizium anisopliae (Anamorphic fungi) on the German cockroach (Blattodea: Blattellidae)

“…Fecundity of Mediterranean fruit fly Ceratitis capitata Wiedemann adult females exposed to M. anisopliae and Paecilomyces fumosoroseus (Wize) Brown & Smith was reduced 65 and 40-50%, respectively, but egg fertility was only moderately affected by fungal treatments (Castillo et al, 2000). In other insect hosts/entomopathogens systems, i.e., lepidopterans and baculoviruses, the male reproductive capacity is also impaired (Matthews et al, 2002;Santiago-Alvarez and Vargas-Osuna, 1988). Sublethal reproductive effects of Bacillus thuringiensis (Berliner) have also been reported on some insect pests.…”

Influence of Larval Age on the Lethal and Sublethal Effects of the Nucleopolyhedrovirus ofTrichoplusia niin the Cabbage Looper

“…Alternatively, part of the reduced fecundity of infected pairs of cabbage loopers may be attributable to males. In Spodoptera littoralis and P. interpunctella, uninfected females that mated to males that were sublethally infected with a baculovirus had a lower reproductive success (egg production and/or egg viability) than those mated to uninfected males (Santiago-Alvarez and Vargas Osuna, 1988;Sait et al, 1994a). Ignoffo (1964) and Vail and Hall (1969) did not observe any sublethal effects when first or second instars of T. ni were treated with TnSNPV.…”