In the 5th “Journée des doctorants”, Laboratoire Chrono-environnement


Hello! just came from this meeting that was carried out today.

I have conducted a talk as a postdoc. With this talk I wanted to present the project. Since it started recently I do not have many results, but thought that would helpful to develop my proposal to show what implies to prepare a Marie Skłodowska-Curie Fellowship. This may be very interesting for the future PhDs and current postdocs but also for research centers to get funding for their research.

I got a nice question from Lucian Staicu, who is a postdoc in this lab. He was asking me how available are rodenticides for other species in the environment, as it happens with other pesticides. I explained that in this system we study bromadiolone is directed to the control of water voles. However when water voles begin to be intoxicated after consuming bromadiolone, they get to the surface and may die then. It is in this situation when bromadiolone is broadly available to predators. I referred here to the recently published

Montaz, J., Jacquot, M., Coeurdassier, M., 2014. Scavenging of rodent carcasses following simulated mortality due to field applications of anticoagulant rodenticide. Ecotoxicology 23, 1671–1680. doi:10.1007/s10646-014-1306-7

Thanks to Núria Vallverdú-Coll and Lisa Ciadamidaro for helping me to prepare the talk and to the organizers for their commitment 🙂


One thought on “In the 5th “Journée des doctorants”, Laboratoire Chrono-environnement

  1. Me, Javier, received the following comment:
    Comment: Autoregulation of small mammal populations is an intrinsically acquired physiological phenomenon. It acts either through adrenal pituitary exis syndrome due to stress or through pheromones. However, they are triggered on attaining a threshold level automatically with increase in the populations. Once poison baiting kills some population, it will trigger only after crossing the threshold level. There appears to be no link between them since they are independent to each other.

    Javier Fernandez-de-Simon: Thanks. Yes I agree that the autoregulation of small mammals may be explained by, for instance, intrinsic factors, like you explain. We here want to examine the role of bromadiolone over predators and vole populations. Therefore I regard predation as an additional way of natural autoregulation of small mammal populations. By eliminating predators through secondary intoxication, there may be a risk of outbreaks in the surrounding areas that are not treated with bromadiolone regularly. However this needs to be studied in depth.

    Comment: There is already some work on secondary toxicity to second generation anticoagulants. However, your project importance depends on the usage of bromadiolone against voles. Please do post your results for our information. Thanks

    Comment: I have practically seen in field natural conditions, the self regulatory mechanism of field mouse populations in India through gonado-pituitary axis (Christian stress syndrome). The study was through corticosteroid level determination and populations in the study area. It was published in ziet. angew. zoologie in 1978.

    Javier Fernandez-de-Simon: Great, it seems very interesting. I will provide the results as soon as possible. I have also checked your nice website. Thanks for your valuable comments.

    Javier Fernandez-de-Simon: Sorry, I checked in your publication list but I did not find the publication in in ziet. angew. zoologie in 1978. I tried to find it in!publications/c1xho
    Sorry for the inconvenience and many thanks for your valuable comments. Regards, Javier

    Comment: It is adrenal responses to crowding in Mus platythrix.


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