Tjomme van Mastrigt
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tjommem.bsky.social
Tjomme van Mastrigt
@tjommem.bsky.social
39 followers 86 following 0 posts
PhD candidate at NIOO-KNAW and Wageningen University & Research. Interested in the impact of emerging arboviruses on wild bird populations.
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Reposted by Tjomme van Mastrigt
eldarrak.bsky.social
Want your modelling to save birds? PhD with me at UvA (Amsterdam): build spatial integrated population model for black-tailed godwits with world-class dataset and strong team here & @birdeyes-gfn.bsky.social/RUG). werkenbij.uva.nl/en/vacancies... Apply by 1 Dec 2025: #Ecology #Bayesian #Conservation
a couple of individually marked godwits. Photo by J. Seenstra
November 4, 2025 at 11:31 AM
Reposted by Tjomme van Mastrigt
emmanuellemunger.bsky.social
🦟 New study on #Usutu and #WestNile #virus dynamics in the Netherlands out in @natcomms.nature.com!
7 years of collaborative studies in birds and mosquitoes by many in the #OneHealth PACT consortium, with Reina Sikkema & @marionkoopmans.bsky.social. → rdcu.be/eCf1f Some key findings: 1/4
One Health approach uncovers emergence and dynamics of Usutu and West Nile viruses in the Netherlands
Nature Communications - Arboviruses are climate sensitive, and their global distributions are changing. Here, the authors describe results of a One Health study programme to investigate the...
rdcu.be
August 25, 2025 at 11:39 AM
Reposted by Tjomme van Mastrigt
niooknaw.bsky.social
New publication: Parental control: ecology drives #plasticity in parental response to #offspring signals, by @tjommem.bsky.social @keesvanoers.bsky.social and others. #feedingbehaviour #foodavailability
doi.org/10.1093/behe...
Figure 1 in Caro et al. (2025): "Experimental design. (A) On hatching day, nests were randomly assigned to be in a good environment (supplemented, green, Nest A), or a poor environment (unsupplemented, orange, Nest B). Supplemented nests received a daily mix of meal worms and wax worms (approximating 20% of the brood’s nutritional needs) for the week after hatching. Unsupplemented nests were visited daily to control for human disturbance. (B) After 1 week, we removed supplemented food and ranked chicks by size (weight) within natal nests. We created foster broods with chicks 1, 3, 5 and 7 from natal nest A, and chicks 2, 4, 6 from natal nest B. This accounted for potential differences in chick behavior based on their previous size rank; standardized size differences within broods; and standardized foster brood size to 7 or 6 chicks. We re-ranked chicks by size within foster nests (Nest C and Nest D). We handfed half of each foster brood to satiation in an alternating pattern by size rank; a mix of unsupplemented and supplemented chicks were fed in order to disentangle short-term and long-term need. This standardized brood-level begging intensity at the beginning of filming; ensured begging is variable enough across chicks to be a useable signal; and ensured begging intensity varied across size ranks. (C) We filmed adults feeding their fostered broods for 4.5 h, excluding first 0.5 h to ensure behavior had normalized (see Supplementary Movie 2 for an example). Fostered broods contained only unrelated chicks to ensure adult behavior was not influenced by familiarity to their own chicks. Photos by S. Caro."
July 28, 2025 at 11:56 AM