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Variation in sexual size dimorphism and fit to rensch’s rule in Costa Rican hummingbirds

Rensch’s rule predicts that sexual size dimorphism (SSD) increases with body mass in species where males are larger but decreases when …

G. Avalos, F. Triana, J. Klank, Marcelo Araya-Salas

Chronic stress raises baseline circulating corticosterone and reduces vocal plasticity in male budgerigars, an avian model for adult vocal learning

Chronic stress affects cognitive function across many domains, including memory, decision making and learning. While the effects of …

T. Wright, Marcelo Araya-Salas, A. Villalba, A.M.-F. Clayshulte Abraham, C.I. Campos, A.L. Schmidt, C. Draney, J.M. Jawor

Variation in echolocation call emission of Neotropical insect-eating bats in response to shifting ambient temperatures

The sensory systems of animals are essential for them to respond to environmental cues and signals. However, their functionality might …

P. Iturralde-Polit, Marcelo Araya-Salas, HR Goerlitz, G. Chaverri

Genomic insights reveal community structure and phylogenetic associations of endohyphal bacteria and viruses in fungal endophytes

Endohyphal microbial communities, composed of bacteria and viruses residing within fungal hyphae, play important roles in shaping …

E. Escudero-Leyva, M. Belle, A. Dadkhahtehrani, J.N. Culver, Marcelo Araya-Salas, J.P. Kutza, N. Goldson, M. Chavarría, P. Chaverri

Global incidence of female birdsong is predicted by territoriality and biparental care in songbirds

Pronounced sexual dimorphism is generally assumed to evolve through sexual selection for elaborate male traits. However, there is …

Odom J. Karan, Marcelo Araya-Salas, Lauryn Benedict, Kristi Lim, James Dale, Wesley H. Webb, Catherine Sheard, Joseph A. Tobias, Gregory F. Ball, Michelle L. Hall, Naomi E. Langmore, Michael S. Webster, Katharina Riebel

Bioacoustic fundamental frequency estimation: a cross-species dataset and deep learning baseline

The fundamental frequency (F0) is a key parameter for characterising structures in vertebrate vocalisations, for instance defining …

Paul Best, Marcelo Araya-Salas, Axel G. Ekström, Bárbara Freitas, Frants H. Jensen, Arik Kershenbaum, Adriano R. Lameira, Kenna D. S. Lehmann, Pavel Linhart, Robert C. Liu, Malavika Madhavan, Andrew Markham, Marie A. Roch, Holly Root-Gutteridge, Martin Šálek, Grace Smith-Vidaurre, Ariana Strandburg-Peshkin, Megan R. Warren, Matthew Wijers, Ricard Marxer

Environmental drivers of calling activity in the critically endangered Lemur Leaf frog, Agalychnis lemur (Hylidae:Phyllomedusinae)

Tropical frog species are known to exhibit high sensitivity to weather regime alterations, which leaves them vulnerable to ongoing …

Fabiola Chirino, Beatriz Willink, Jorge Elizondo-Calvo, Wagner Chaves-Acuña, Diego Salas-Solano, Jose Salazar-Zúñiga, Marcelo Araya-Salas

Quantifying degradation in animal acoustic signals with the R package baRulho

Animal acoustic signals are shaped by selection to convey information based on their tempo, intensity, and frequency. However, sound …

Marcelo Araya-Salas, Erin E. Grabarczyk, Marcos Quiroz-Oliva, Adrián García-Rodríguez, Alejandro Rico-Guevara

Persistent vocal learning in an aging open-ended learner reflected in neural FoxP2 expression

Most vocal learning species exhibit an early critical period during which their vocal control neural circuitry facilitates the …

Bushra Moussaoui, Kennedy Ulmer, Marcelo Araya-Salas, Timothy F. Wright

Vocal interactions of breeding partners predict duration of incubation bout in an Artic seabird

In species with biparental care, coordination of parental activities can have important fitness consequences. However, specific …

Marion Devogel, Rozenn Le Fur, Antoine Grissot, Dorota Kidawa, Marcelo Araya-Salas, Katarzyna Wojczulanis‑Jakubas