Results 41 to 50 of about 10,545 (190)

Quantity discrimination in salamanders [PDF]

Journal of Experimental Biology, 2010
SUMMARYWe investigated discrimination of large quantities in salamanders of the genus Plethodon. Animals were challenged with two different quantities (8 vs 12 or 8 vs 16) in a two-alternative choice task. Stimuli were live crickets, videos of live crickets or images animated by a computer program.
Paul, Krusche, Claudia, Uller, Ursula, Dicke   +2 more
openaire   +2 more sources

Fine‐scale spatial variation in eastern grey squirrel melanism across a complex urban landscape

Journal of Animal Ecology, EarlyView.
By sampling 197 parks, the study demonstrates how natural geography creates divergence within cities. The findings reveal that the St. Lawrence River and its tributaries act as barriers, disrupting urban melanism clines in grey squirrels. Ultimately, the research indicates that natural features still dictate evolutionary rules in anthropogenic ...
Francis Quang‐Hai Dinh, Isabella C. Richmond, Andrew P. Hendry, Allison M. Roth   +3 more
wiley   +1 more source

A relict stem salamander: Evidence from the Early Cretaceous of Siberia [PDF]

Acta Palaeontologica Polonica, 2016
The early evolution of salamanders, which are one of the three living groups of lissamphibians, is not well known. Both stem- and crown-group salamanders first appeared in the Middle Jurassic (Bathonian), but subsequently had different evolutionary ...
Pavel P. Skutschas
doaj   +1 more source

Palatal morphology predicts the paleobiology of early salamanders

eLife, 2022
Ecological preferences and life history strategies have enormous impacts on the evolution and phenotypic diversity of salamanders, but the yet established reliable ecological indicators from bony skeletons hinder investigations into the paleobiology of ...
Jia Jia, Guangzhao Li, Ke-Qin Gao
doaj   +1 more source

Updated Chorotypes of Terrestrial Vertebrates Shed New Light on Zoogeographical Regions in China

Integrative Zoology, EarlyView.
Chorotype represents a fundamental concept for identifying groups of species that share similar distribution patterns. However, the last comprehensive revision of animal chorotypes in China was performed more than a decade ago. Here, we update the chorotype classifications for 1040 species and propose an updated zoogeographical regionalization scheme ...
Baoming Zhang, Minghui Zhou, Zhipeng Xie, Ludan Zhang, Haoting Duan, Jiehua Yu, Jiekun He   +6 more
wiley   +1 more source

High‐Altitude Adaptation of Frogs (Case Study: Nanorana parkeri): From Physiological Phenotypes to AltitudeOmics

Integrative Zoology, EarlyView.
High altitudes are challenging for the animals that inhabit these environments. The Xizang plateau frog (Nanorana parkeri) survives in high‐altitude environments through a synergistic strategy of metabolic remodeling and protein expression adjustment to optimize energy efficiency and enhance cellular protection.
Xuejing Zhang, Yonggang Niu, Shengkang Men, Yanghuilin Zhang, Xiaolong Tang, Kenneth B. Storey, Qiang Chen   +6 more
wiley   +1 more source

A Tale of Appendages: Investigating Limb and Tail Variation in Salamanders

Integrative Zoology, EarlyView.
We analyzed limb and tail proportions in 44% of known salamander species using a phylogenetic comparative approach. Our results revealed significant variation among families and ecological groups, with aquatic species showing longer limbs and basal lineages having shorter tails.
Giacomo Rosa, Andrea Costa, Matteo Bozzo, Sebastiano Salvidio, Sara Ferrando   +4 more
wiley   +1 more source

Preparing for a Bsal invasion into North America has improved multi-sector readiness

Frontiers in Amphibian and Reptile Science
Western palearctic salamander susceptibility to the skin disease caused by the amphibian chytrid fungus Batrachochytrium salamandrivorans (Bsal) was recognized in 2014, eliciting concerns for a potential novel wave of amphibian declines following the B ...
Deanna H. Olson, Evan H. Campbell Grant, Molly Bletz, Molly Bletz, Jonah Piovia-Scott, David Lesbarrères, Jacob L. Kerby, Michael J. Adams, Maria Florencia Breitman, Michelle R. Christman, María J. Forzán, Matthew J. Gray, Aubree J. Hill, Michelle S. Koo, Olga Milenkaya, Eria A. Rebollar, Louise A. Rollins-Smith, Megan Serr, Alexander Shepack, Leonard Shirose, Laura Sprague, Jenifer B. Walke, Alexa R. Warwick, Brittany A. Mosher   +23 more
doaj   +1 more source

Warm Spring Weather Alters Calling Phenology of Four Sympatric Early‐Breeding Anurans

Integrative Zoology, EarlyView.
An unusually warm March in 2024 (“false spring”) followed by freezing temperatures allowed us to assess the impact of a weather event on an amphibian community. The calling activity of all four species was associated with increasing temperature, and the first date of calling was advanced by 11–18 days.
Jeffrey P. Ethier, Nionta Habib, Marc J. Mazerolle, Vance L. Trudeau   +3 more
wiley   +1 more source

Reproducing Five Motor Behaviors in a Salamander Robot With Virtual Muscles and a Distributed CPG Controller Regulated by Drive Signals and Proprioceptive Feedback

Frontiers in Neurorobotics, 2020
Diverse locomotor behaviors emerge from the interactions between the spinal central pattern generator (CPG), descending brain signals and sensory feedback.
Jérémie Knüsel, Jérémie Knüsel, Alessandro Crespi, Jean-Marie Cabelguen, Auke J. Ijspeert, Dimitri Ryczko, Dimitri Ryczko, Dimitri Ryczko, Dimitri Ryczko   +8 more
doaj   +1 more source