Effects of a fire-retardant on oviposition habitat selection and larval development of the mosquito Culiseta longiareolata

Lital Ozeri; Rael Horwitz; Jamie Kneitel; Eyal Rahav; Leon Blaustein

doi:10.1111/een.12819

Effects of a fire-retardant on oviposition habitat selection and larval development of the mosquito Culiseta longiareolata

Lital Ozeri, Rael Horwitz, Jamie Kneitel, Eyal Rahav, Leon Blaustein

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

1. Fire retardants are composed of fertilising salts that are commonly used for fighting wildfires. These chemicals have various effects on individual arthropod species and aquatic communities. 2. This study investigated the effects of four treatments of a prevalent fire retardant [FR CROS 134 (FR), applied at concentrations of 0, 3.8 × 10², 7.6 × 10² and 11.4 × 10² mg litre⁻¹] on oviposition habitat selection (OHS) by Culiseta longiareolata and Culex laticinctus mosquitoes in an outdoor mesocosm. Additionally, larval development of C. longiareolata was examined in response to this fire retardant. 3. The results demonstrate that OHS increased in both species, whereas survivorship (0–86.7%) and time to metamorphosis (5.4–23.1 days) of C. longiareolata were not affected by any of the treatments. However, cyanobacterial biomass increased and heterotrophic bacteria decreased in response to the addition of FR. 4. It was found that FR applications can have unintended consequences which can increase OHS by female mosquitoes. The growing use of fire retardants worldwide, and especially in Israel, justify evidence-based assessment and environmental management of their use. This study is a first critical step in filling the knowledge gap with respect to the impact of FR on aquatic ecosystems.

Original language	English
Pages (from-to)	476-484
Number of pages	9
Journal	Ecological Entomology
Volume	45
Issue number	3
DOIs	https://doi.org/10.1111/een.12819
State	Published - 1 Jun 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 The Royal Entomological Society

Funding

This project was funded by the German-Israel Project-cooperation (DIP) awarded to LB and Alan Templeton (DFG reference no. BL 1271/1-1). Additional funding was provided by Israel Science Foundation grant (891/2012) to LB. JK was supported by the Fulbright Scholar Program and the United States-Israel Educational Foundation. We thank the Israel Fire and Rescue Authority. We also thank Aaron Friedman-Heiman for help in setting up the experiment, and Antonina Polevikov, Valentina Rovelli, Nadav Pezaro, Sahar Rosenfeld, Ori Segev, Avi Koplovich, Maxim Krakhmalnyi, Hadar Shalom, and Claire Duchet for their help with laboratory work and fruitful discussions. The authors declare there are no conflicts of interest. This project was funded by the German‐Israel Project‐cooperation (DIP) awarded to LB and Alan Templeton (DFG reference no. BL 1271/1‐1). Additional funding was provided by Israel Science Foundation grant (891/2012) to LB. JK was supported by the Fulbright Scholar Program and the United States‐Israel Educational Foundation. We thank the Israel Fire and Rescue Authority. We also thank Aaron Friedman‐Heiman for help in setting up the experiment, and Antonina Polevikov, Valentina Rovelli, Nadav Pezaro, Sahar Rosenfeld, Ori Segev, Avi Koplovich, Maxim Krakhmalnyi, Hadar Shalom, and Claire Duchet for their help with laboratory work and fruitful discussions. The authors declare there are no conflicts of interest.

Funders	Funder number
Israel Fire and Rescue Authority
United States - India Educational Foundation
United States-Israel Binational Science Foundation
Israel Science Foundation	891/2012

Keywords

Aquatic habitats
fire retardant
habitat selection
mosquito
oviposition
vernal pools

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10.1111/een.12819

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abstract = "1. Fire retardants are composed of fertilising salts that are commonly used for fighting wildfires. These chemicals have various effects on individual arthropod species and aquatic communities. 2. This study investigated the effects of four treatments of a prevalent fire retardant [FR CROS 134 (FR), applied at concentrations of 0, 3.8 × 102, 7.6 × 102 and 11.4 × 102 mg litre−1] on oviposition habitat selection (OHS) by Culiseta longiareolata and Culex laticinctus mosquitoes in an outdoor mesocosm. Additionally, larval development of C. longiareolata was examined in response to this fire retardant. 3. The results demonstrate that OHS increased in both species, whereas survivorship (0–86.7%) and time to metamorphosis (5.4–23.1 days) of C. longiareolata were not affected by any of the treatments. However, cyanobacterial biomass increased and heterotrophic bacteria decreased in response to the addition of FR. 4. It was found that FR applications can have unintended consequences which can increase OHS by female mosquitoes. The growing use of fire retardants worldwide, and especially in Israel, justify evidence-based assessment and environmental management of their use. This study is a first critical step in filling the knowledge gap with respect to the impact of FR on aquatic ecosystems.",

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Effects of a fire-retardant on oviposition habitat selection and larval development of the mosquito Culiseta longiareolata

Abstract

Bibliographical note

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Keywords

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