Diflubenzuron effects on reproduction and hemolymph ecdysteroid levels in female locusts Schistocerca gregaria (Forskål, 1775) (Orthoptera, Acrididae)

Tail, Ghania; Porcheron, P.; Doumandji-Mitiche, Bahia; Blais, Catherine

doi:10.1665/1082-6467(2008)17[89:deorah]2.0.co;2

Cited by 9 publications

(5 citation statements)

References 38 publications

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“…Furthermore, buds treated with diflubenzuron in replacement experiments contained the fewest number of eggs and feeding/oviposition holes. The diflubenzuron-related reduction in the reproductive ability of the HBW that we observed has also been reported for several other insect orders (Diptera, Orthoptera, and Lepidoptera) [30][31][32] and coleopteran families (Coccinellidae and Scarabaeidae) [33,34], including Curculionidae. Previous research found the ability of diflubenzuron to be effective enough in its control of the congeneric cotton boll weevil to warrant its usage in the eradication trials for this pest in North Carolina and Virginia in 1979 [35].…”

Section: Discussionsupporting

confidence: 87%

Lethal and Sublethal Effects of Contact Insecticides and Horticultural Oils on the Hibiscus Bud Weevil, Anthonomus testaceosquamosus Linell (Coleoptera: Curculionidae)

Greene,

Yang,

Velazquez-Hernandez

et al. 2023

Insects

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In 2017, the hibiscus bud weevil (HBW), Anthonomus testaceosquamosus Linell (Coleoptera: Curculionidae), was found outside of its native range of Mexico and Texas, infesting hibiscus plants in Florida. Therefore, we selected 21 different insecticide and horticultural oil products to evaluate their effects on the reproductive rate, feeding, and oviposition behavior of the HBW. In laboratory experiments, significant mortality was observed in adult weevils exposed to diflubenzuron-treated hibiscus leaves and buds, and hibiscus buds treated with diflubenzuron contained the fewest number of eggs and feeding/oviposition holes. Among horticultural oil products, significant mortality was only observed in experiments in which adult weevils were directly sprayed (direct experiments). Pyrethrins and spinetoram plus sulfoxaflor reduced the oviposition rate and caused significant mortality in direct experiments. Diflubenzuron, pyrethrins, spinetoram plus sulfoxaflor, and spirotetramat were further tested via contact toxicity experiments and greenhouse experiments. Contact toxicity experiments demonstrated that the tested insecticides (except diflubenzuron) were highly toxic to HBW adults. In greenhouse experiments, only those hibiscus plants treated with pyrethrins had significantly fewer feeding/oviposition holes and larvae within their flower buds when compared to control (water-treated) plants. These results constitute an important first step in the identification of effective chemical control options for the HBW.

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Section: Discussionsupporting

confidence: 87%

Lethal and Sublethal Effects of Contact Insecticides and Horticultural Oils on the Hibiscus Bud Weevil, Anthonomus testaceosquamosus Linell (Coleoptera: Curculionidae)

Greene,

Yang,

Velazquez-Hernandez

et al. 2023

Insects

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“…The same compound was tested in S. gregaria, showing analyzes of ovarian and testicular disruption (Ghazawy, 2012). Tail et al (2008) observed, in diflubenzuron treatment of S. gregaria, a reduction in eggs number per ootheca and, with the observed results, formulated a hypothesis about the treatment have reduced the ecdysteroids levels in hemolymph, reflecting in ovarian synthesis reduction due to alterations in follicular chambers.…”

Section: Potential In Reproductive Modificationsmentioning

confidence: 83%

Existing potentials in Insect Growth Regulators (IGR) for crop pest control

Apolinário

Feder

2021

RSD

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The aim of this review is to explore the potentials existing in insecticides that are considered Insect Growth Regulators (IGR) for the control of insects considered crop pests, with an observation of the main mechanisms of neuroendocrine modifications, development and viability of the species used as study models. The data search on digital platforms, as well as the screening of materials about crop pests, resulted in 74 IGR references and their potentials. The analysis of the information found demonstrated a greater use in works of compounds belonging to chitin synthesis inhibitors class; and orders such as Hemiptera, Lepidoptera, Coleoptera, Orthoptera, Thysanoptera and Diptera were represented in the studies. The main types of activities reunited were morphological and anatomical modifications, reproductive modifications, alterations in developmental stage, alterations in developmental period, ovicidal activity, larvicidal/ninficidal activity and fagoinhibition. The congregated knowledge about the main pests used as study models, the main IGRs compounds and their biological potentials allow an evaluation of their use as an informative source for crop pest control methods.

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“…(2013) show that treatment of S. gregaria imagos (5 days‐old) with sublethal doses of chlorpiryphos‐ethyl, one of the most recommended insecticides in the control of grasshoppers and locusts, induces a decline in the fertility of treated insects, as well as sterility in their descendants. A test is also reported of the insecticide Diflubenzuron (DFB), the first commercialized benzoylphenyl urea derivative (BPU) that acts as a chitin synthesis inhibitor and is used to control a wide range of phytophagous insects including migratory locusts, on the reproduction of S. gregaria (Tail et al ., ). The results show that the ingestion of DFB by locust females, 5 days after imaginal molt, significantly delays the timing of the first and of the second laying compared with control females.…”

Section: Discussionmentioning

confidence: 97%

Physiological and biochemical effects of Olea europaea leaf extracts from four phenological growth stages on the oogenesis of female locust Locusta migratoria

et al. 2018

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The effects of olive leaf extract (OLE) are studied on several reproductive variables and the ovarian biochemical composition of Locusta migratoria (Orthoptera: Acrididae) adult females. The methanolic extracts are prepared from the leaves sampled during four phenological growth stages of olive tree: cluster formation (Cf), swelling inflorescence buds (Sib), full flowering (Ff) and endocarp hardening (Eh). When applied to adult females during the pre-ovipositional phase, the treatment elicites a significant adverse effect on their reproductive potential. Indeed, OLE significantly reduces both fecundity and fertility and affects oocyte growth during the first gonadotrophic cycle, as indicated by measurements of ovarian weight, length of terminal oocytes and ovarian index. Furthermore, OLE is examined with respect to ovarian biochemical components. Biochemical analyses reveal a significant reduction of ovarian contents of proteins, lipids and carbohydrates, suggesting a disruption in the incorporation of the haemolymph metabolites in the oocytes and an interference of OLE with the vitellogenesis process. The antigonadotrophic effect is confirmed by a histological study of the ovaries, which clearly shows a delay in ovarian development and in yolk accumulation in the basal oocytes of treated females. The most effect is noted with the extract prepared from the leaves collected at the swelling inflorescence buds for all measured parameters, which appears to be related to its high content of polyphenols. Acrididae) comprise the two major species. These species exhibit phenotypic plasticity, known as density-dependent phase polyphenism, where individuals can exist anywhere between two extreme forms (solitarious versus gregarious) that differ in their morphology, physiology, behaviour, ecology and propensity to cause agricultural damage (Lazar et al., 2016;Cullen et al., 2017). Locusts at the solitarious form cause little damage to agricultural crops but, in the gregarious phase, they are responsible for substantial damage to crops and grazing, as

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Diflubenzuron effects on reproduction and hemolymph ecdysteroid levels in female locusts Schistocerca gregaria (Forskål, 1775) (Orthoptera, Acrididae)

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 9 publications

References 38 publications

Lethal and Sublethal Effects of Contact Insecticides and Horticultural Oils on the Hibiscus Bud Weevil, Anthonomus testaceosquamosus Linell (Coleoptera: Curculionidae)

Lethal and Sublethal Effects of Contact Insecticides and Horticultural Oils on the Hibiscus Bud Weevil, Anthonomus testaceosquamosus Linell (Coleoptera: Curculionidae)

Existing potentials in Insect Growth Regulators (IGR) for crop pest control

Physiological and biochemical effects of Olea europaea leaf extracts from four phenological growth stages on the oogenesis of female locust Locusta migratoria

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