Combined effects of larval exposure to a heat wave and chlorpyrifos in northern and southern populations of the damselfly Ischnura elegans

Arambourou, Hélène; Stoks, Robby

doi:10.1016/j.chemosphere.2015.01.044

Cited by 33 publications

(28 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In particular, chlorpyrifos has been categorized as "very toxic to aquatic life" and "very toxic to aquatic life with long lasting effects" (Watts, 2012). Lethal and sub-lethal effects have been detected in different invertebrate species, including C. riparius, at environmentally relevant concentrations (e.g., Arambourou andStoks, 2015, 1971;Rakondravelo et al, 2006;Pérez et al, 2013). Bioaccumulation of chlorpyrifos in fish tissues has been found by Masiá et al (2015) in a study performed in the Llobregat basin.…”

Section: Discussionmentioning

confidence: 94%

Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Castro-Català

Kuzmanović

Roig

et al. 2016

Science of The Total Environment

119

View full text Add to dashboard Cite

The determination of the real toxicity of sediments in aquatic ecosystems is challenging and necessary for an appropriate risk assessment. Different approaches have been developed and applied over the last several decades. Currently, the joint implementation of chemical, ecological and toxicological tools is recommended for an appropriate and successful toxicity risk assessment. We chose the combination of the toxic unit approach with acute pore water tests (Vibrio fischeri, Pseudokirchneriella subcapitata and Daphnia magna) and whole-sediment exposure tests (V. fischeri, Chironomus riparius), together with invertebrate community composition (multivariate analyses) to detect short and long-term responses of the organisms in four rivers of the Iberian Peninsula. High toxicity was detected in three sites (the downstream sites of the Llobregat and the Júcar, and the most upstream site of the Ebro). We identified organophosphate insecticides and metals as the main variables responsible for this toxicity, particularly in the whole-sediment tests. In particular, chlorpyrifos was mostly responsible for the toxicity (TUs) of D. magna, coinciding with the C. riparius mortality (long-term toxicity) in the mentioned sites, and copper was the main pollutant responsible for the short-term toxicity of P. subcapitata. The combination of the different approaches allowed us to detect ecotoxicological effects in organisms and identify the main contributors to the toxicity in these multi-stressed rivers.

show abstract

Section: Discussionmentioning

confidence: 94%

Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Castro-Català

Kuzmanović

Roig

et al. 2016

Science of The Total Environment

119

View full text Add to dashboard Cite

show abstract

“…Exposure to CPF caused widespread negative effects, and these were often stronger or only apparent in larvae that previously had been starved during the heat wave. The CPF‐induced reductions in growth rate and total fat content are in line with studies in other aquatic animals (e.g., Widder & Bidwell, ), including damselfly larvae (e.g., Janssens & Stoks, ; Arambourou & Stoks, ). These effects have been explained by several nonexclusive mechanisms (Campero et al ., ; Xuereb et al ., ): the inhibition of AChE, a lower food intake, and a higher investment in detoxification and repair.…”

Section: Discussionmentioning

confidence: 99%

“…The key finding of our study was that CPF only caused considerable mortality in larvae that had previously been exposed to the combination of a heat wave and starvation. CPF‐induced mortality has been observed in many invertebrates (reviewed in Domingues et al ., ), including damselfly larvae (Janssens & Stoks, ; Arambourou & Stoks, ), and has been associated with a strong inhibition of AChE (reviewed in Domingues et al ., ). In our study, the delayed synergistic pattern in CPF‐induced mortality can, however, not be explained by the inhibition of AChE activity.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Exposure to a heat wave under food limitation makes an agricultural insecticide lethal: a mechanistic laboratory experiment

Dinh

Janssens

Stoks

2016

Global Change Biology

Self Cite

View full text Add to dashboard Cite

Extreme temperatures and exposure to agricultural pesticides are becoming more frequent and intense under global change. Their combination may be especially problematic when animals suffer food limitation. We exposed Coenagrion puella damselfly larvae to a simulated heat wave combined with food limitation and subsequently to a widespread agricultural pesticide (chlorpyrifos) in an indoor laboratory experiment designed to obtain mechanistic insights in the direct effects of these stressors in isolation and when combined. The heat wave reduced immune function (activity of phenoloxidase, PO) and metabolic rate (activity of the electron transport system, ETS). Starvation had both immediate and delayed negative sublethal effects on growth rate and physiology (reductions in Hsp70 levels, total fat content, and activity levels of PO and ETS). Exposure to chlorpyrifos negatively affected all response variables. While the immediate effects of the heat wave were subtle, our results indicate the importance of delayed effects in shaping the total fitness impact of a heat wave when followed by pesticide exposure. Firstly, the combination of delayed negative effects of the heat wave and starvation, and the immediate negative effect of chlorpyrifos considerably (71%) reduced larval growth rate. Secondly and more strikingly, chlorpyrifos only caused considerable (ca. 48%) mortality in larvae that were previously exposed to the combination of the heat wave and starvation. This strong delayed synergism for mortality could be explained by the cumulative metabolic depression caused by each of these stressors. Further studies with increased realism are needed to evaluate the consequences of the here-identified delayed synergisms at the level of populations and communities. This is especially important as this synergism provides a novel explanation for the poorly understood potential of heat waves and of sublethal pesticide concentrations to cause mass mortality.

show abstract

“…Thus, detoxification of xenobiotic compounds is very important for this species, because xenobiotic compounds can accumulate in the body of the damselfly over time. Additionally, it is known that odonates are vulnerable to various pesticides such as chlorpyrifos (Arambourou and Stoks 2015), fipronil (Kasai et al. 2017), and spinosad (Jones and Ottea 2013).…”

Section: Resultsmentioning

confidence: 99%

Genomic features of the damselfly Calopteryx splendens representing a sister clade to most insect orders

et al. 2017

View full text Add to dashboard Cite

Insects comprise the most diverse and successful animal group with over one million described species that are found in almost every terrestrial and limnic habitat, with many being used as important models in genetics, ecology, and evolutionary research. Genome sequencing projects have greatly expanded the sampling of species from many insect orders, but genomic resources for species of certain insect lineages have remained relatively limited to date. To address this paucity, we sequenced the genome of the banded demoiselle, Calopteryx splendens, a damselfly (Odonata: Zygoptera) belonging to Palaeoptera, the clade containing the first winged insects. The 1.6 Gbp C. splendens draft genome assembly is one of the largest insect genomes sequenced to date and encodes a predicted set of 22,523 protein-coding genes. Comparative genomic analyses with other sequenced insects identified a relatively small repertoire of C. splendens detoxification genes, which could explain its previously noted sensitivity to habitat pollution. Intriguingly, this repertoire includes a cytochrome P450 gene not previously described in any insect genome. The C. splendens immune gene repertoire appears relatively complete and features several genes encoding novel multi-domain peptidoglycan recognition proteins. Analysis of chemosensory genes revealed the presence of both gustatory and ionotropic receptors, as well as the insect odorant receptor coreceptor gene (OrCo) and at least four partner odorant receptors (ORs). This represents the oldest known instance of a complete OrCo/OR system in insects, and provides the molecular underpinning for odonate olfaction. The C. splendens genome improves the sampling of insect lineages that diverged before the radiation of Holometabola and offers new opportunities for molecular-level evolutionary, ecological, and behavioral studies.

show abstract

Combined effects of larval exposure to a heat wave and chlorpyrifos in northern and southern populations of the damselfly Ischnura elegans

Cited by 33 publications

References 49 publications

Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Exposure to a heat wave under food limitation makes an agricultural insecticide lethal: a mechanistic laboratory experiment

Genomic features of the damselfly Calopteryx splendens representing a sister clade to most insect orders

Contact Info

Product

Resources

About