Blandine Charrat (@blandinec)

Towards a multi-metric assessment of river restoration ecological outcomes across projects and contexts The assessment of the ecological outcomes of river restoration projects remains a complex undertaking due to the high variability of responses observed. This variability is dependent on a number of fa...

My first postdoc paper is available as a preprint! 🏞️🚧🪳
We used a multimetric study to show response patterns of macroinvertebrate diversities to river restoration projects across Europe. Then, we linked those patterns to the environment and restoration measures.

doi.org/10.64898/202...

13.12.2025 07:03 👍 0 🔁 0 💬 0 📌 0

Towards a multi-metric assessment of river restoration ecological outcomes across projects and contexts https://www.biorxiv.org/content/10.64898/2025.12.10.693400v1

13.12.2025 02:31 👍 0 🔁 1 💬 0 📌 0

Towards a multi-metric assessment of river restoration ecological outcomes across projects and contexts https://www.biorxiv.org/content/10.64898/2025.12.10.693400v1

13.12.2025 02:31 👍 0 🔁 1 💬 0 📌 0

Same-sex sexual behaviours in a wasp despite sex recognition cues: the broad mating filter hypothesis https://www.biorxiv.org/content/10.1101/2025.11.20.689450v1

20.11.2025 18:45 👍 2 🔁 2 💬 0 📌 0

Same-sex sexual behaviours in a wasp despite sex recognition cues: the broad mating filter hypothesis Same-sex sexual behaviour (SSB) in animals, once considered an evolutionary dead end, is surprisingly widespread, particularly among male insects. These behaviours may arise from either adaptive or nonadaptive processes. Over shorter timescales, SSB can occur when courtship costs are low or when missing a mating opportunity is costly, leading to a reduced behavioural threshold for courtship - a 'broad mating filter,' as predicted by threshold acceptance theory. We investigated SSB in males of the parasitoid wasp Venturia canescens (Gravenhorst, 1829, Hymenoptera: Ichneumonidae), a species where encounters are infrequent and male courtship is energetically not costly. We hypothesised that males exhibit a broad mating filter, accepting conspecifics for courtship regardless of sex. First, behavioural assays assessed whether SSB correlated with higher reproductive success. Second, we compared cuticular hydrocarbon (CHC) profiles between sexes, as these compounds may serve as cues for sex recognition. Our chemical analyses revealed clear quantitative CHC differences between males and females, indicating potential for sex recognition. Nonetheless, 18% of males displayed SSB, and these behaviours had no detectable effect on either courting or mating success. Moreover, males receiving SSB did not experience any reproductive advantage. Our findings support the hypothesis of a broad mating filter in V. canescens males. In this species, where conspecific encounters are rare, SSB appears to arise from reduced discrimination rather than adaptive benefits, consistent with a low-cost courtship strategy and high opportunity costs of missed mating events.

Same-sex sexual behaviours in a wasp despite sex recognition cues: the broad mating filter hypothesis bioRxivpreprint

22.11.2025 21:41 👍 0 🔁 1 💬 0 📌 0

Same-sex sexual behaviours in a wasp despite sex recognition cues: the broad mating filter hypothesis Same-sex sexual behaviour (SSB) in animals, once considered an evolutionary dead end, is surprisingly widespread, particularly among male insects. These behaviours may arise from either adaptive or no...

Our new preprint is online 🎉
We show that male parasitoid wasps V. canescens ignore chemical cues for sex recognition when expressing SSB. This is in accordance with a broad mating filter, linked to the low cost of courtships and rare encounters in the wild in this species.
doi.org/10.1101/2025...

20.11.2025 20:55 👍 0 🔁 0 💬 0 📌 0

Last weekend i took the second place in the french championship of field archery! Really proud after those two really hot days! 🏹🥈

18.08.2025 12:00 👍 0 🔁 0 💬 0 📌 0

In the beginning of August, I became french champion of target archery! What a end for my first season in this discipline! 🏹🥇

18.08.2025 11:58 👍 1 🔁 0 💬 0 📌 0

I am really happy to announce that my first research article is now published after 3 years of experiments, writing and reviewing! 🥳
We studied reproductive behaviours of Venturia canescens males at individual and populational levels.

30.12.2022 17:37 👍 0 🔁 0 💬 0 📌 0

Vice champion of France of field archery 🥰

05.08.2022 22:20 👍 0 🔁 0 💬 0 📌 0

Waiting for food. Mom, dad, where are you? We are hungry 🤤

#photography #wildlifephotography #swallows #auvergne

27.07.2022 17:36 👍 0 🔁 0 💬 0 📌 0

Work, Work, Work!

#photography #wildlifephotography #auvergne

25.07.2022 06:46 👍 0 🔁 0 💬 0 📌 0

It’s not just an old wall… Find the swallows!

#auvergne #parcregionallivradoisforez #photography

23.07.2022 18:08 👍 0 🔁 0 💬 0 📌 0

Changement de décor - retour au travail 🧪 👩🏼‍🔬 🐝

27.04.2022 18:33 👍 0 🔁 0 💬 0 📌 0

Tir en campagne - Fourvière - 18/04/22
📷R. Joly

18.04.2022 18:59 👍 0 🔁 0 💬 0 📌 0

Tir en campagne - Fourvière
17/04/22
Toujours aussi beau ce parcours en pleine ville 😍

18.04.2022 18:58 👍 0 🔁 0 💬 0 📌 0

Reprise du tir en campagne - Brignais 10/04/22
📷 G. Farault

18.04.2022 18:57 👍 0 🔁 0 💬 0 📌 0

Aujourd’hui, l’association ses non-permanents du @LbbeLyon organise son Séminaire post-thèse ! C’est l’occasion pour les stagiaires et doctorants, tous les 2 ans, de discuter de l’après thèse 👩🏻‍🎓 👨🏼‍🎓

11.03.2022 07:28 👍 0 🔁 0 💬 0 📌 0

Aller, ce soir c’est Pars-en-Thèse ! L’occasion de discuter doctorat avec les étudiants en quête de projet d’avenir :

10.03.2022 16:34 👍 0 🔁 0 💬 0 📌 0

Qui dit nouvel arc dit nouveau nom.
Voilà donc Smic. Rapport à son prix 💸🥲
C’est parti pour de nouvelles aventures !

10.03.2022 16:32 👍 0 🔁 0 💬 0 📌 0

Learn to tune your bow: it's never too late… even if a new one is coming really soon 🙄💸😬☺️🥳

It's time to get out and do some field archery!

#archery

02.03.2022 18:37 👍 0 🔁 0 💬 0 📌 0

Quand tu oublies ton téléobjectif mais que c’est quand même pas mal…
Milan royal - Suisse

14.02.2022 13:14 👍 0 🔁 0 💬 0 📌 0

Championne de France universitaire 🎉💪🏻

#ffsu #tiralarc #asudl

04.02.2022 06:03 👍 0 🔁 0 💬 0 📌 0

Lyon, December 8th 🥰 #Lyon #8decembre #FeteDesLumieres

08.12.2021 19:16 👍 0 🔁 0 💬 0 📌 0

On Monday I talked about scientific research with high school students and help them discover this obscure world thanks to @DECLICS2021!

08.12.2021 19:14 👍 0 🔁 0 💬 0 📌 0

Une belle découverte lors des Entomophagistes la semaine dernière à Rennes !

x.com/SocEntomolFr/s…

17.11.2021 16:51 👍 0 🔁 0 💬 0 📌 0

Talented brother 🥰

x.com/mrraph_photo/s…

12.10.2021 12:47 👍 0 🔁 0 💬 0 📌 0

Blandine Charrat

Latest posts by Blandine Charrat @blandinec