Effects of juvenoid Pyriproxyfen on reproduction and F1 progeny in myiasis causing flesh fly Sarcophaga ruficornis L. (Sarcophagidae: Diptera)

Abstract

Freshly emerged virgin female Sarcophaga ruficornis were topically treated with different doses of pyriproxyfen to test the efficacy on reproduction and subsequent F1 progeny. The results included mortality of the treated adults, significant reduction in fecundity, more than 90% inhibition in larvae production, mortality in F1 generation during larval instars, reduction in pupariation, and adult emergence and production of deformed adults. There was a dose-dependent response showing high degree of correlation in the doses administered and deformities observed. The effects in F1 generation show that an intraovarial transfer of pyriproxyfen was responsible for the various deformations observed, showing the potency of juvenoid pyriproxyfen for longer durations across generations. This is the first study that clearly demonstrates the efficacy of pyriproxyfen against reproduction in S. ruficornis and its potential for the management of this notorious pest of medico-veterinary importance.

Assessment of Barium Carbonate Toxicity on the Developmental Stages of Sarcophaga ruficornis (Diptera: Sarcophagidae)

“…8) of the family Sarcophagidae is a pest of veterinary and public health importance and is explored for different types of researches (Singh and Kumar, 2015;Pal and Kumar, 2013;Kumar and Khan, 2004). It is a well known species and has medical importance as a myiasis producing fly and it is seen in forensic entomological context .…”

Evaluation of pyriproxyfen, a juvenile hormone analog, on Drosophila melanogaster (Diptera: Drosophilidae): Insecticidal activity, ecdysteroid contents and cuticle formation

“…Pyriproxyfen, the most potent JHA available today (Hatakoshi, 2012), inhibits metamorphosis and embryogenesis in several insect orders, including Diptera (Kawada et al, 1988;Ishaaya et al, 1994;Aribi et al, 2006). In addition, this compound suppresses oviposition, reduces viability of eggs (Ghasemi et al, 2010;Ohba et al, 2013) and reduces fecundity (Singh & Kumar, 2015). Recently, pyriproxyfen was reported to affect some physical and biochemical processes in insects, such as moulting, by influencing the activity of chitinases (Nasr et al, 2010).…”

A comparative bioefficacy of seed and root extracts of a medicinal plant, Withania somnifera when administered to prepupae of lepidopteran insects, Spodoptera litura (Lepidoptera: Noctuidae) and Pericallia ricini (Lepidoptera: Arctiidae)

“…This kind of detrimental effect on adult eclosion has also been observed as a consequence of treatment with plant extracts or their active ingredients (Lapcharoen et al, 2005;Nenaah, 2011;Soonwera & Phasomkusolsil, 2016;Sreelatha, Hymavathi, Rao, Devanand, & Rani, 2010). The plant extracts mimic the action of JHAs as exogenous administration of JHAs exert inhibitory effect on the neuropeptide, eclosion hormone, produced by the ventral tritocerebral neurosecretory cell which leads to inhibition of adult eclosion (Singh & Kumar, 2015a, 2015b.…”