A methodological workflow for quantitative colouration and colour pattern comparison reveals taxonomic and habitat‐level differences in the polymorphic fire salamander (Salamandra salamandra)
Wiley » Journal of Zoology
by L. Alarcón‐Ríos, D. Álvarez, G. Velo‐Antón
4d ago
In this study, we use the urodele Salamandra salamandra as a study model to apply an analytical approach for extracting and quantifying colour proportions and patterns variation, using the recently developed R packages patternize and recolorize, to accurately describe and compare colour distribution at both taxonomic and habitat levels. Our results demonstrated that this methodological workflow effectively detects differences in colour patterns at both levels, confirming its utility from systematics to eco‐evolutionary studies. Our results also revealed an increased prevalence of melanistic co ..read more
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The socio‐spatial ecology of giant anteaters in the Brazilian Cerrado
Wiley » Journal of Zoology
by A. Chhen, A. Bertassoni, A. L. J. Desbiez, M. J Noonan
4d ago
Here, we used fine‐scale GPS location data and continuous‐time stochastic processes to study the socio‐spatial ecology of 23 giant anteaters (Myrmecophaga tridactyla) in the Brazilian Cerrado. Our findings suggest giant anteaters are a solitary and largely asocial species that readily share space with conspecifics. Our study provides insight into heretofore unknown aspects of the socio‐spatial ecology of this iconic, but understudied species, as well as crucial information for proactive area‐based management. Abstract Movement is a key component of an animal's life history. While there are num ..read more
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Are Bergmann's and Jordan's rules valid for a neotropical pitviper?
Wiley » Journal of Zoology
by L. M. Servino, J. M. G. Ferrarini, C. d. C. Nogueira, F. E. Barbo, R. J. Sawaya
4d ago
In our study, we found a trend of variation in body size and number of vertebrae associated with climate in Bothrops jararaca, a pitviper widely distributed along the eastern coast of South America. We argue that these trends emerge from physiological mechanisms and ecological factors in snakes. Abstract Morphological variation along the spatial distribution of species has been extensively investigated in ecological studies, and several ecogeographical rules explore the relationships between morphological traits and the environment. Many morphological traits are correlated, providing an opport ..read more
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Weather conditions at different spatial and temporal scales influence avian post‐breeding migration patterns on route
Wiley » Journal of Zoology
by R. Benjumea, C. Astrain, A. Istúriz, P. Oria, I. Ibarrola, M. del Mar Delgado
1w ago
Migration's ecological importance, shaped by climate change, is underscored by bird migration data. Analysis of 126 species' autumn migration in Europe reveals temperature rise and dry breeding seasons reducing migration rates and delaying timing. Local adverse weather disrupts migration until favorable conditions return. This nonlinear process, influenced by species traits and weather, challenges accurate climate change predictions. Abstract Migration plays a central role in many ecological and evolutionary processes. Global patterns of climatic variation are having a profound influence upon ..read more
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The conundrum of turtle and tortoise basking: A critical review
Wiley » Journal of Zoology
by B. C. Chessman
1w ago
Turtles and tortoises may bask out of water, at the water surface, or in deep water, during the day or at night, and with or without exposure to sunlight or another heat source. Basking's primary function is thermoregulatory warming, but evidence supports several other purposes. Unambiguous use of the term basking requires the specification of distinguishing criteria and the attachment of qualifiers to stipulate time of day, medium, and environmental exposure. Abstract Behaviours designated as basking span a broad array of ectothermic and endothermic animals. Understanding the role that baskin ..read more
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Issue Information
Wiley » Journal of Zoology
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1M ago
Journal of Zoology, Volume 323, Issue 1, Page i-iv, May 2024 ..read more
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Effects of growing season and individual growth rates on the occurrence of larval overwintering in Otton frog tadpoles
Wiley » Journal of Zoology
by N. Iwai
1M ago
This study investigated the effect of the growing season and individual growth rates on the occurrence of larval overwintering in Babina subaspera by laboratory‐rearing experiments. Tadpoles with higher growth rates were more likely to metamorphose before winter, but the threshold growth rate was higher for tadpoles that hatched later in the season. The results suggested that slow‐growing tadpoles with insufficient time until the onset of winter would gain higher fitness by metamorphosing after winter. Abstract The timing and size of metamorphosis are crucial for the future fitness of organism ..read more
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Cozy den or winter walk: the effects of climate and supplementary feeding on brown bear winter behavior
Wiley » Journal of Zoology
by N. Bogdanović, A. Zedrosser, A. G. Hertel, D. Ćirović
1M ago
Supplemental feeding sites in combination with predicted mild winters and prolonged natural food availability suggest that the use of hibernation as an energy‐saving strategy to overcome severe environmental conditions may decrease in the future. Our data suggest that an abundance of human‐provided food resources during winter may facilitate the emergence of different wintering strategies in brown bears, ranging from a single hibernation event up to five stationary periods, while some bears remained partly or completely active throughout the winter. Abstract Hibernation is a key adaptation for ..read more
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A new view of territoriality in large eagles: the territory pre‐exists regardless of their occupants
Wiley » Journal of Zoology
by S. Morollón, P. López‐López, V. Urios
1M ago
Investigating the plasticity of territory boundaries, the shape of territories and how territories can be modified depending on their owners is important to deepen our knowledge of the behaviour of territorial species. We analysed the variation and tested the similarity of the distribution area of individuals from the same territory between 2015 and 2021, using data from 51 Bonelli's eagles (Aquila fasciata) from 22 different territories, tagged with GPS/GSM transmitters in eastern Spain. We also analysed the changes in territory size and shape following the replacement of territory owners eit ..read more
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Hindlimb myology in two piscivorous raptorial birds: a quantitative comparison of the osprey and the white‐tailed sea eagle (Aves, Accipitriformes)
Wiley » Journal of Zoology
by M. C. Mosto, M. B. J. Picasso, A. M. Tudisca, O. Krone
1M ago
The hindlimb musculature of Pandion haliaetus and Haliaeetus albicilla showed remarkable similarities, indicating a strong preservation of muscle traits essential for their raptorial abilities. Specifically, the flexor muscles —, flexor hallucis longus, tibialis cranialis, and flexor digitorum longus exhibited distinct architectural designs in both species, characterized by high PCSA (physiological cross sectional area) values and elongated fibers, crucial for gripping actions. However, the muscles responsible for controlling digits II, III, and IV displayed intermediate values for both fiber ..read more
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