Effects of the pyrethroid insecticide, WL85871 and phosalone on adults and progeny of the leaf‐cutting bee <i>Megachile rotundata</i> F, pollinator of lucerne

Tasei, Jean‐Noël; Carré, Serge; Bosio, P.; Debray, Philippe; Hariot, J.

doi:10.1002/ps.2780210205

Cited by 10 publications

(4 citation statements)

References 8 publications

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“…Pesticide use on conventional farms is seldom quantified, however. In addition, some pesticides approved in organic farming have both lethal and sublethal effects on bees (101,114). Thus, a lack of significant differences in bee populations between conventional and organic farming could be generated by a lack of experimentally robust treatment categories to specify pesticide risk.…”

Section: Pesticidesmentioning

confidence: 98%

The Role of Resources and Risks in Regulating Wild Bee Populations

Roulston

Goodell

2011

Annu. Rev. Entomol.

545

439

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Recent declines of bee species have led to great interest in preserving and promoting bee populations for agricultural and wild plant pollination. Many correlational studies have examined the indirect effects of factors such as landscape context and land management practices and found great variation in bee response. We focus here on the evidence for effects of direct factors (i.e., food resources, nesting resources, and incidental risks) regulating bee populations and then interpret varied responses to indirect factors through their species-specific and habitat-specific effects on direct factors. We find strong evidence for food resource availability regulating bee populations, but little clear evidence that other direct factors are commonly limiting. We recommend manipulative experiments to illuminate the effects of these different factors. We contend that much of the variation in impact from indirect factors, such as grazing, can be explained by the relationships between indirect factors and floral resource availability based on environmental circumstances.

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Section: Pesticidesmentioning

confidence: 98%

The Role of Resources and Risks in Regulating Wild Bee Populations

Roulston

Goodell

2011

Annu. Rev. Entomol.

545

439

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“…Davis (1989) contributed to the understanding of the oral pathway of insecticides, mediated by adult nurse honey bees which regurgitate honey sac content to feed larvae. In solitary bees, George and Rincker (1985), Tasei and Carré (1987), and Tasei et al (1988), showed that Megachile rotundata Fabr. females provisioning their nest with pollen and nectar can also transfer insecticides to their larvae via the food stored in the cell prior to egg laying.…”

Section: Introductionmentioning

confidence: 99%

Effects of insect growth regulators on honey bees and non-Apis bees. A review

Tasei¹

2001

Apidologie

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-The insect growth regulators (IGRs) are ecdysone or juvenile hormone mimics, or chitin synthesis inhibitors. They are more likely to be hazardous to larval insects than to adults. Application of JH mimics to adult honey bees may affect foraging behaviour and some physiological traits. Topical and feeding tests revealed that application of IGRs to larvae may result in death and larval ejection by workers, malformed larvae and pupae with typical rimmed eyes, or malformed adults. Several laboratory "larvae tests" using artificially contaminated diets have been described for honey bees and bumble bees. Field and cage methods have also been published for honey bees and bumble bees respectively. Diflubenzuron was generally safe for honey bee brood in fields treated at 35 to 400 g . ha -1 a.i. and harmful to bumble bees at 300 g . ha -1 a.i. Fenoxycarb was safe for bumble bees at 1 200 g . ha -1 a.i. and hazardous to honey bees causing damage to honey bee brood at 140 g . ha -1 .insect growth regulator / honey bee / non-Apis bee / toxicity / risk assessment

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“…It was reported that the LD 50 of phosalone was 89000 μg/kg on Apis mellifera (Thompson, 2012). Assessment of acute contact toxicity of phosalone on Megachile rotunda showed that the usage of 1kg/ha caused 95% mortality at 24h (Tasei et al, 1987). Oral toxicity of phosalone on Bombus terrestris was evaluated by Marletto et al (2003).…”

Section: Discussionmentioning

confidence: 99%

The Acute Oral Toxicity of Commonly Used Pesticides in Iran, to Honeybees (Apis Mellifera Meda)

Rasuli

Nazemi-Rafie

Sadeghi

2015

Journal of Apicultural Science

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A b s t r a c t The honey bee is credited with approximately 85% of the pollinating activity necessary to supply about one-third of the world's food supply. Well over 50 major crops depend on these insects for pollination. The crops produce more abundantly when honey bees are plentiful. Worker bees are the ones primarily affected by pesticides. Poisoning symptoms can vary depending on the developmental stage of the individual bee, and the kind of chemical employed. The oral toxicity of these insecticides: (phosalone and pirimicarb), acaricide (propargite), insecticide and acaricide (fenpropathrin), fungicides, and bactericides (copper oxychloride and the Bordeaux mixture), were evaluated for the purposes of this research. The results showed that fenpropathrin had high acute oral toxicity (LC 50 -24h and LC 50 -48 were 0.54 and 0.3 ppm, respectively). Propargite had 7785 ppm (active ingredient) for LC 50 -24h and 6736 ppm (active ingredient) for LC 50 -48h in honeybees and is therefore, non-toxic to Apis mellifera. On the other hand, copper oxychloride had minimum acute oral toxicity to honeybees (LC 50 -24h and LC 50 -48 were 4591.5 and 5407.9 ppm, respectively) and was therefore considered non-toxic. Also, the Bordeaux mixture was safe to use around honeybees. Phosalone and primicarb were considered highly and moderately toxic to honeybees, respectively.

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Effects of the pyrethroid insecticide, WL85871 and phosalone on adults and progeny of the leaf‐cutting bee Megachile rotundata F, pollinator of lucerne

Cited by 10 publications

References 8 publications

The Role of Resources and Risks in Regulating Wild Bee Populations

The Role of Resources and Risks in Regulating Wild Bee Populations

Effects of insect growth regulators on honey bees and non-Apis bees. A review

The Acute Oral Toxicity of Commonly Used Pesticides in Iran, to Honeybees (Apis Mellifera Meda)

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