New and noteworthy host records for some North American and Colombian spider wasps (Hymenoptera: Pompilidae)

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  New and noteworthy host records for some North American and Colombian spider wasps (Hymenoptera: Pompilidae) Abstract New and noteworthy parasitoid/host records for 47 North American and Colombian species and subspecies of spider wasps (Hymenoptera: Pompilidae) are listed in taxonomic order following the Catalog of Hymenoptera in America North of Mexico (Krombein 1979). Te records represent an extension of previous host studies by Kurczewski and various co-authors. New genus and/or species host records are given for the genera and subgenera  Calopompilus  Ashmead,  Pepsis  Fabricius,  Hemipepsis  Dahlbom,  Priocnessus  Banks,  Entypus  Dahlbom,  Cryptocheilus  Panzer,  Priocnemissus  Haupt,  Caliadurgus  Pate,  Dipogon  Fox,  Phanagenia  Banks,  Auplopus  Spinola,  Ageniella  Banks,  Aporus  Spinola,  Episyron  Schiødte,  Poecilopompilus...

Effect of an organophosphate insecticide on the behaviour and physiology of the spider Misumenops maculissparsus (Araneae: Thomisidae)

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Effect of an organophosphate insecticide on the behaviour and physiology of the spider Misumenops maculissparsus (Araneae: Thomisidae)

Abstract

Pests in agriculture cause significant economic damage by reducing production and product quality. While pesticides can be an alternative for pest control, their use has a significant impact on both the environment and human health. Chlorpyrifos, a widely used pesticide, affects both target and non-target organisms, including spiders. In this study, we investigated whether Misumenops maculissparsus spiders at three developmental stages (J0, J2, and adults) recognize the presence of the insecticide and how it affects their enzymatic activity. The results indicated that only J0 was able to recognize the insecticide and avoided surfaces treated with it. On the other hand, J0 and adults exhibited reduced acetylcholinesterase (AChE) activity and the activity of antioxidant enzymes was affected by the treatment. Superoxide dismutase (SOD) increased significantly in J0, catalase (CAT) in all stages, glutathione S-transferase (GST) in J2, and glutathione peroxidase (GPx) in J2 and adults. Chlorpyrifos exposure did not increase reactive oxygen species or alter cellular populations in any model.

Romero, S., Laino, A., Gabellone, C., & Garcia, C. (2024). Effect of an organophosphate insecticide on the behaviour and physiology of the spider Misumenops maculissparsus (Araneae: Thomisidae). Environmental Toxicology and Pharmacology, 110, 104525. https://doi.org/10.1016/j.etap.2024.104525