Effects of an herbicide on physiology, morphology, and fitness of the dung beetle <i>Euoniticellus intermedius</i> (Coleoptera: Scarabaeidae)

González‐Tokman, Daniel; Martínez-Morales, Imelda; Farrera, Arodi; Ortiz-Zayas, María del Rosario; Lumaret, Jean‐Pierre

doi:10.1002/etc.3498

Cited by 19 publications

(24 citation statements)

References 81 publications

(94 reference statements)

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“…Therefore, exposed animals in nature could change their resource allocation to different physiological traits (i.e., energy storage, muscle mass) compared with what occurs under laboratory conditions. wileyonlinelibrary.com/ETC © 2019 SETAC In the case of D. gazella, the response to the use of ivermectin was more complex and did not match the results reported under laboratory conditions for E. intermedius (González-Tokman et al 2017a; we even saw positive effects. Nevertheless, the effects of ivermectin on D. gazella have not been studied previously, and our results give a first description of the physiological responses of this abundant species under field conditions.…”

Section: Discussioncontrasting

confidence: 83%

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Dung Beetle Body Condition: A Tool for Disturbance Evaluation in Contaminated Pastures

Villada‐Bedoya

Córdoba‐Aguilar

Escobar

et al. 2019

Enviro Toxic and Chemistry

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The use of veterinary medical products and herbicides is a common practice in intensified livestock systems. These compounds affect nontarget organisms that perform important ecosystem functions, such as dung beetles. The assessment of body condition allows us to determine how individuals respond to changes in the environment. However, assessments of how contamination associated with cattle farming affects coprophagous insects such as dung beetles have not been conducted in natural systems. In the present study, we evaluated the effect of ivermectin (an antiparasitic drug) and herbicides on the body condition of 3 species of dung beetles collected in the field: Copris incertus, Euoniticellus intermedius, and Digitonthophagus gazella. We recorded 3 condition indicators (body size, lipid mass, and muscle mass) of beetles collected from 19 livestock ranches in northeastern Mexico. In general, the use of ivermectin had adverse effects on C. incertus and E. intermedius whereas the effects were positive for D. gazella. Conversely, the use of herbicides had adverse effects on D. gazella and positive effects on C. incertus. The different effects of ivermectin and herbicides found in males and females show that sex can be important in determining individual responses to environmental contamination. Importantly, we provide the first evidence under natural conditions that native and exotic species of dung beetles are highly sensitive to different types of livestock management, with veterinary medications and herbicides having the ability to alter body condition. Changes in dung beetle condition can reduce the ecosystem services that dung beetles provide in livestock systems. Environ Toxicol Chem 2019;38:2392–2404. © 2019 SETAC

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Section: Discussioncontrasting

confidence: 83%

“…Plaistow and Siva-Jothy 1996;Contreras- Garduño et al 2008;Córdoba-Aguilar et al 2016), including dung beetles(González-Tokman et al 2017aSalomão et al 2018).…”

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confidence: 99%

Dung Beetle Body Condition: A Tool for Disturbance Evaluation in Contaminated Pastures

Villada‐Bedoya

Córdoba‐Aguilar

Escobar

et al. 2019

Enviro Toxic and Chemistry

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“…Hence, it might seem reasonable to consider that this bat species should not be at high risk when facing environmental changes affecting its prey distribution and abundance (Boyles & Storm, 2007; Owens & Dittman, 2003; Pratchett et al., 2006; Twining et al., 2019). However, our results have emphasized the existence of a core diet—potentially essential for optimizing R. ferrumequinum fitness—which could be threatened by the modification of the landscape, the indirect effect of cattle anti‐parasite drugs on the beetles, and more globally the use of pesticides (Dietz et al., 2013; Finch et al., 2020; Froidevaux et al., 2019; Geiger et al., 2010; Gonzalez‐Tokman et al., 2017; Pocock & Jennings, 2008). Rhinolophus ferrumequinum is also vulnerable as it is a long‐lived species (up to 30 years) with a low reproductive rate (maximum of one pup per year) and a late sexual maturity (two to five years) (Caubère et al., 1984; Ransome, 1995; Wilkinson & South, 2002).…”

Section: Discussionmentioning

confidence: 86%

eDNA metabarcoding reveals a core and secondary diets of the greater horseshoe bat with strong spatio‐temporal plasticity

et al. 2020

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Dietary plasticity can be a determining factor allowing species to cope with environmental changes. Consequently, it is an important issue to consider in conservation biology. Despite this, it remains rarely addressed in the literature, potentially due to methodologies which were until recently rather limited. The advent of molecular approaches now makes it possible to get a precise picture of diet and its plasticity, even for endangered and elusive species. Here, we focused on the greater horseshoe bat (Rhinolophus ferrumequinum) in Western France, where this insectivorous species has been classified as “Vulnerable” on the Regional Red List in 2016. We applied an eDNA metabarcoding approach to 1986 fecal samples collected in six maternity colonies on three sampling dates. We described the diet and investigated whether the landscape surrounding colonies and the different phases of the maternity cycle influenced the diversity and the composition of this diet. We showed that R. ferrumequinum feed on a much more diverse prey spectrum than expected from previous studies, highlighting how eDNA metabarcoding can improve our knowledge on the dietary habits of elusive species. Our approach also revealed that the diet of R. ferrumequinum seems to be composed of two distinct features: the core diet consisting of a few preferred taxa shared by all the colonies (25% of the occurrences) and the secondary diet consisting of numerous rare prey taxa that were highly different between colonies and sampling dates (75% of the occurrences). Constraints associated with the greater horseshoe bat life cycle, as well as insect phenology and landscape features, strongly influenced the diversity and composition of both the core diet and the diet as a whole. Further research should now explore the relationships between R. ferrumequinum dietary plasticity and fitness, to better assess the impact of core prey decline on R. ferrumequinum population viability.

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“…Continuous application of herbicides in agriculture areas can harm both the environment (e.g., soil, water, and biodiversity) and human health (González-Tokman et al 2016;Wang et al 2016). Weeds may become more resistant towards herbicides with time and increased use of herbicides may result (Green 2014;Heap 2014).…”

Section: Introductionmentioning

confidence: 99%

Targeted cattle grazing as an alternative to herbicides for controlling weeds in bird-friendly oil palm plantations

Tohiran

Nobilly

Zulkifli

et al. 2017

Agron. Sustain. Dev.

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The use of agrochemicals is expected to increase with the global expansion of oil palm plantations. In line with environmentally sustainable palm oil certification, targeted grazing can minimize the dependency on herbicides for controlling weeds in plantations. Here, we show for the first time that targeted grazing would control weeds and improve biodiversity of desired animal species. We sampled birds at 45 oil palm plantations in Peninsular Malaysia that were systematically grazed, non-systematically grazed, or herbicidecontrolled plantations without cattle grazing. We found that bird species richness increased with size of grazing area, but decreased with number of cattle. Bird abundance was higher in the systematic grazing system, but negatively related to number of cattle. These factors explained 18.41 and 25.34% of the observed variations in bird species richness and abundance, respectively. Our findings suggest that targeted cattle grazing can be instrumental for transforming conventional oil palm agriculture into more biodiversity-friendly agroecosystems. Targeted grazing is likely to be practical under field conditions in major palm oil producing countries. In addition, the use of targeted grazing as a biological control method for weeds would be welcomed by palm oil consumers and encouraged by sustainable palm oil certification bodies such as the Roundtable on Sustainable Palm Oil (RSPO).

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Effects of an herbicide on physiology, morphology, and fitness of the dung beetle Euoniticellus intermedius (Coleoptera: Scarabaeidae)

Cited by 19 publications

References 81 publications

Dung Beetle Body Condition: A Tool for Disturbance Evaluation in Contaminated Pastures

Dung Beetle Body Condition: A Tool for Disturbance Evaluation in Contaminated Pastures

eDNA metabarcoding reveals a core and secondary diets of the greater horseshoe bat with strong spatio‐temporal plasticity

Targeted cattle grazing as an alternative to herbicides for controlling weeds in bird-friendly oil palm plantations

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