About
39
Publications
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290
Citations
Introduction
Skills and Expertise
Additional affiliations
October 2021 - present
ATMEC
Position
- Researcher
October 2018 - October 2021
Position
- PhD Student
Description
- Effects of environmental stressors on honeybees
January 2018 - July 2018
New Heaven Reef Conservation Program & Conservation Diver
Position
- Research Assistant
Description
- Marine conservation Reef ecology research projects
Publications
Publications (39)
The Neptune’s cup sponge is an iconic species found in marine soft sediment habitats in the Indo-West Pacific, with a history of overharvesting and extreme population declines. Access to SCUBA diving surveys has allowed for its rediscovery at Singapore, its type locality; however, with fewer than ten living individuals documented in the twenty-firs...
Author summary
Bees, despite their small brains, possess a rich behavioural repertoire and show significant variations among individuals. In social bees this variability is key to the division of labour that maintains their complex social organizations and has been linked to the maturation of specific brain areas as a result of development and fora...
Dendrophylliidae represents one of the most speciose families of scleractinian coral, expressing a wide range of morphological and ecological traits. Recent phylogenetic analyses of the family have indicated that several conventional genera are in need of revision. In the Gulf of Thailand, dendrophylliids are predominantly found on hard-substrate r...
Environmental stressors frequently have sublethal consequences for animals, often affecting the mean of phenotypic traits in populations. However, effects on inter‐individual variability are poorly understood. Since phenotypic variability is the basis for adaptation, any change due to stressors may have important implications for population resilie...
Laboratory studies show detrimental effects of metal pollutants on invertebrate behaviour and cognition, even at low levels. Here, we report a field study of Western honey bees sampled from an historic mining site heavily contaminated with metal and metalloid pollution, particularly arsenic. We analysed more than 1,000 bees from five apiaries withi...
Giant clams are organisms of significant ecological importance on coral reefs. They are known to help maintain oligotrophic conditions on reefs, to act as potential reservoirs of symbiotic dinoflagellates and as a consequence of their large, dense shells, to contribute to reef structural complexity. Despite this, little work has been done to invest...
Analysing large numbers of brain samples can reveal minor, but statistically and biologically relevant variations in brain morphology that provide critical insights into animal behaviour, ecology and evolution. So far, however, such analyses have required extensive manual effort, which considerably limits the scope for comparative research. Here we...
Whether animals can actively avoid food contaminated with harmful compounds through taste is key to assess their ecotoxicological risks. Here, we investigated the ability of honey bees to perceive and avoid food resources contaminated with common metal pollutants known to impair behaviour at low concentrations. In laboratory assays, bees did not di...
Environmental stressors have sublethal consequences on animals, often affecting the mean of phenotypic traits in a population. However, potential effects on variance are poorly understood. Since phenotypic variance is the basis for adaptation, any influence of stressors may have important implications for population resilience.
Here we explored thi...
Giant clams (Tridacninae) are an ecologically important species in coral reef habitats across the Indo-Pacific. Numerous examples of giant clam population declines of varying degrees of severity have been documented since the 1970s. These have been attributed to several reasons, such as overexploitation in regional fisheries and ornamental trades,...
Competition for space on coral reefs is fierce, however when external natural and anthropogenic drivers disproportionately benefit certain organisms, reefs can quickly be conquered. Sponges in particular, have been shown to be competitive benthic colonisers and incidences of their epibiosis on scleractinian corals in the Indo-Pacific have been grow...
Concrete cubic frames and decommissioned steel naval vessels have been deployed in Thailand liberally to act as artificial substrates for coral restoration and marine recreation. We assessed recruitment at such substrate types at Koh Tao, Gulf of Thailand, and compared the community structure of scleractinian corals between artificial substrates an...
Honey bees are crucial pollinators. A plethora of environmental stressors, such as agrochemicals, have been identified as contributors to their global decline. Especially, these stressors impair cognitive processes involved in fundamental behaviours. So far however, virtually nothing is known about the impact of metal pollutants, despite their know...
Heavy metal pollution limits shouldn't just keep humans safe, but other animals too, say Coline Monchanin and Mathieu Lihoreau
Whether animals can actively avoid food contaminated with harmful compounds through taste is key to understand their ecotoxicological risks. Here, we investigated the ability of honey bees to perceive and avoid food resources contaminated with common metal pollutants known to impair their cognition at low concentrations (lead, zinc and arsenic). In...
Improved access to field survey infrastructure throughout South-East Asia has allowed for a greater intensity of biodiversity surveys than ever before. The rocky bottoms and coral reef habitats across the region have been shown to support some of the highest sea slug biodiversity on the planet, with ever increasing records. During the past ten year...
Environmental pollutants can exert sublethal deleterious effects on animals. These include disruption of cognitive functions underlying crucial behaviours. While agrochemicals have been identified as a major threat to pollinators, metal pollutants, which are often found in complex mixtures, have so far been overlooked. Here we assessed the impact o...
Pollutants can have severe detrimental effects on insects, even at sublethal doses, damaging developmental and cognitive processes involved in crucial behaviours. Agrochemicals have been identified as important causes of pollinator declines, but the impacts of other anthropogenic compounds, such as metallic trace elements in soils and waters, have...
The current decline of invertebrates worldwide is alarming. Several potential causes have been proposed but metal pollutants, while being widespread in the air, soils and water, have so far been largely overlooked. Here, we reviewed the results of 527 observations of the effects of arsenic, cadmium, lead and mercury on terrestrial invertebrates. Th...
Environmental pollutants can exert sublethal deleterious effects on animals. These include disruption of cognitive functions underlying crucial behaviours. While agrochemicals have been identified as a major threat to pollinators, other compounds, such as heavy metals that are often found in complex mixtures, have largely been overlooked. Here, we...
Research in recent years have provided rapid advances in biogeographic and taxonomic documentation of sea slugs around the world. However, efforts are lacking in surveying most coastlines and habitats in South-East Asia. Recent studies from the Gulf of Thailand have indicated that a wealth of unexplored sea slug diversity and ecology may be gained...
Insecticide use could be reduced if dose recommendations move from a toxicological perspective (how much is needed to kill an insect pest) to an ecological perspective (how much is needed to protect a crop).
Complete biodiversity list of species found during surveys conducted as part of the Escalante Biodiversity and Ecosystem Report 2020 - Sustainable Priorities and Sustenance. Species recorded within the MPA zonation, species with known local or regional commercial value to the fishing industry based on literature and interviews, and species document...
In 2018, the government of Escalante city, Philippines, sought to improve the sustainability of marine resource utilisation within Escalante waters as part of a larger overhaul of sustainable resource use within its borders. As part of this effort, Conservation Diver was approached to provide an ecological assessment of species richness and ecosyst...
Recent studies revealed that reef corals can eat large-sized pelagic and benthic animals in addition to small planktonic prey. As follow-up, we document natural ingestion of sea slugs by corals and investigate the role of sacoglossan sea slugs as possible prey items of scler-actinian corals. Feeding trials were carried out using six sacoglossan spe...
Complete raw data of trials conducted, as separated by prey species.
PIOL values indicate Post Ingestion Observation Length in minutes. Consumption scores range from 0 indicating no visible tissue degradation to 1 indicating heavy tissue degradation.
(DOCX)
Mean ingestion duration ± standard error (min) for each predator-prey trial.
(DOCX)
Mean consumption score ± standard error for each predator-prey trial.
(DOCX)
Mean time till rejection ± standard error (min) for each predator-prey trial.
(DOCX)
Mean rate of prey transport ± standard error (mm.min-1) for all prey and predators tested.
(DOCX)
Over the past decades, research on insect cognition has made considerable advances in describing the ability of model species (in particular bees and fruit flies) to achieve cognitive tasks once thought to be unique to vertebrates, and investigating how these may be implemented in a miniature brain. While this lab-based research is critical to unde...
Chlorpyrifos is an organophosphate pesticide used around the world to protect food crops against insects and mites. Despite guidelines for chlorpyrifos usage, including precautions to protect beneficial insects, such as honeybees from spray drift, this pesticide has been detected in bees in various countries, indicating that exposure still occurs....
Questions
Questions (4)
I'm interested in the international guidelines for heavy metals in food/water (drinking or irrigation) as set by the WHO/FAO, or local guidelines for contents in the environment (soil for instance). What are the consequences if the values measured are above the guidelines? It's unclear to me whether those standards are just 'desired thresholds' or whether one could face legal action?
Thanks for your help.
Hi, I could use your help to analyze with R software my data investigating the effects of environmental parameters and parasite species on growth rates.
I measured the length and width of 3 species of plants every 2 weeks for 6 months. I did it in 2 different sites. In each site, I had 6 quadrats as a unite of replication, with 4 plants of each species per quadrat.
As environmental variables, I have: the temperature at each site for the whole period and the relative covers of two unwanted plant species (assessed every 2 weeks).
First of all, should I work on the raw data of length and width or on growth rates (mm/day) or on another variable combining those two apparied measures?
Next, how to test the effect of the time and of the 3 environmental variables (temperature, growth unwanted plant 1, growth unwanted plant 2)? I was thinking of doing GLMMs and maybe use a multi model inference procedure (like MuMin) to select the model taking into account the variables really having an effect?
Thanks a lot for your advice.
Dear all,
I'm looking for a way to statistically compare species composition between sites. I have the abundance of 42 species for 21 sites belonging to 4 different categories. I will also soon have GPS data giving me the distance between sites.
I basically want to see if there is any similarity in term of ecological composition between my sites and between categories and also if any species indicators (or combination of them) come out for each sites or for each category of sites.
So far, I've tried to compute Bray Curtis matrix (vegan package on R) giving me dendrogram of similarity and play around with Indicspec package, but I'm definitely out of my confort zone with that kinds of tests. Once I have the GPS data, I'd like to include those informations in the analyzes, but I have no clue on how to do it (Mantel correlation?).
Any inputs on what to do and how to do it would be much appreciated.
Cheers
I'm attempting a biodiversity inventory of numerous invertebrate species at two locations in the Indo-Pacific (Gulf of Thailand and Philippines), but I've not been able to find comprehensive ressources for the purpose of cowrie identification. Are there any papers or guides that might be available to assist in this? If not, what is the best way for me to accurately identify species we're finding? Thank you very much.
