Javier Pérez-Tris
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jpereztris.bsky.social
Javier Pérez-Tris
@jpereztris.bsky.social
160 followers 85 following 4 posts
Professor of Zoology. Evolutionary ecology of birds and other critters.
https://t.co/oXXToweXMr
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jpereztris.bsky.social
Aves migratorias: cómo sobreviven en un mundo antrópico sciencemediacentre.es/aves-migrato...
Aves migratorias: cómo sobreviven en un mundo antrópico
Las aves migratorias sufren de manera especial las variaciones climáticas, ecológicas y urbanísticas derivadas del mundo en constante cambio en el que vivimos. Su supervivencia está en riesgo, así como los ecosistemas entre los que desarrollan sus vidas. Analizamos qué amenazas encaran de manera cíclica en sus rutas migratorias y por qué es importante protegerlas.
sciencemediacentre.es
May 9, 2025 at 8:22 AM
jpereztris.bsky.social
See our last research on Iberian blackcaps and their blood parasites. Proud of this team! 💪💪
cremacha.bsky.social Carolina Remacha @cremacha.bsky.social · Jan 27
NEW PAPER doi.org/10.1098/rspb... !
In nature time is precious. We discovered that young of a small passerine bird, the Eurasian blackcaps, infected by haemosporidians, commonly known as avian malaria parasites, were delayed in the moult that confers these birds an adult plumage.
The image shows at the top left, the map with the 26 localities spanning the wide range of environmental conditions across Iberian Spain. At the bottom left, a photo of a juvenile Eurasian blackcap together with a rectangle showing the codes that indicate the progress of the post-juvenile moult (from 1 to 6) and the summary of the main results (lower moult scores indicative of delayed moult in birds with Plasmodium, Haemoproteus and high-Haemoproteus parasite load). At the top right there is the Figure 2 of the paper with the mean posterior probability and 95% Bayesian credible intervals (BCI) of each stage of PJM (represented with different colours) in juvenile blackcaps that were either uninfected, single-infected or co-infected by any haemosporidian lineage. And finally, at the bottom right there is the figure 3 of the paper with the relationship between the Haemoproteus intensity and the posterior probability of each post-juvenile moult score.
January 27, 2025 at 12:58 PM
Reposted by Javier Pérez-Tris
cremacha.bsky.social
NEW PAPER doi.org/10.1098/rspb... !
In nature time is precious. We discovered that young of a small passerine bird, the Eurasian blackcaps, infected by haemosporidians, commonly known as avian malaria parasites, were delayed in the moult that confers these birds an adult plumage.
The image shows at the top left, the map with the 26 localities spanning the wide range of environmental conditions across Iberian Spain. At the bottom left, a photo of a juvenile Eurasian blackcap together with a rectangle showing the codes that indicate the progress of the post-juvenile moult (from 1 to 6) and the summary of the main results (lower moult scores indicative of delayed moult in birds with Plasmodium, Haemoproteus and high-Haemoproteus parasite load). At the top right there is the Figure 2 of the paper with the mean posterior probability and 95% Bayesian credible intervals (BCI) of each stage of PJM (represented with different colours) in juvenile blackcaps that were either uninfected, single-infected or co-infected by any haemosporidian lineage. And finally, at the bottom right there is the figure 3 of the paper with the relationship between the Haemoproteus intensity and the posterior probability of each post-juvenile moult score.
January 27, 2025 at 9:57 AM
Reposted by Javier Pérez-Tris
avianbiology.bsky.social
NEW PAPER: Young male blackcaps with blood parasite coinfections cope with oxidative stress favouring anthocyanin-rich food during migratory fattening full article

➡️ nsojournals.onlinelibrary.wiley.com/doi/10.1111/...

@jpereztris.bsky.social

#ornithology #migration #oxidative #stress
Fig. 1 from the article: Variation in preference for fat-enriched food (as opposed to preference for anthocyanin-enriched food) between blackcaps with different levels of multiple status of infection by haemosporidian parasites (sample sizes in each group are indicated). Male blackcap
May 7, 2024 at 5:54 PM
jpereztris.bsky.social
Asomando la nariz por aquí... Hola 😊
October 18, 2023 at 8:32 PM