Results 51 to 60 of about 10,545 (190)

A method to evaluate body length of live aquatic vertebrates using digital images

Ecology and Evolution, 2021
Traditional methods to measure body lengths of aquatic vertebrates rely on anesthetics, and extended handling times. These procedures can increase stress, potentially affecting the animal's welfare after its release. We developed a simple procedure using
Ivan Arismendi, Gwen Bury, Lauren Zatkos, Jeff Snyder, David Lindley   +4 more
doaj   +1 more source

Prey Partitioning in a Diverse Carnivore Community: Implications for Reintroduced Fishers in Washington

Animal Conservation, EarlyView.
Using fecal DNA metabarcoding, we quantified dietary overlap among reintroduced fishers and sympatric coyotes, bobcats, and Pacific martens in Washington's North Cascades. Niche overlap was substantial for common prey but varied with body size, revealing fine‐scale resource partitioning that may limit fishers' access to energetically efficient prey ...
Kayla A. Shively, Ellen M. Reese, Jason I. Ransom, Jeffrey C. Lewis, Tara Chestnut, David O. Werntz, Taal Levi, Laura R. Prugh   +7 more
wiley   +1 more source

Single Line Drawing Generation via Semantics‐Driven Optimization

Computer Graphics Forum, EarlyView.
We present a method for automatically generating single‐line drawings in vector format, guided by a text prompt or an input image. Our approach leverages score distillation sampling to optimize the parameters of a uniform rational B‐spline (URBS) curve, ensuring that the drawing consists of a single continuous stroke by design.
Tanguy Magne, Alexandre Binninger, Ruben Wiersma, Olga Sorkine‐Hornung   +3 more
wiley   +1 more source

Salamanders aid research into mechanisms of non‐canonical organ regeneration for clinical applications

Medicine Advances
Salamanders possess remarkable regenerative capacities for organ regeneration among tetrapod vertebrates. Previous research has primarily focused on studying the regeneration of canonical tissues or organs such as limbs, tail, brain, spinal cord, heart ...
Binxu Yin, Xiao Cui, Yanmei Liu, Ji‐Feng Fei   +3 more
doaj   +1 more source

Skin mucosome activity as an indicator of Batrachochytrium salamandrivorans susceptibility in salamanders. [PDF]

PLoS ONE, 2018
Recently emerged fungal diseases, Batrachochytrium dendrobatidis (Bd) and Batrachochytrium salamandrivorans (Bsal) are an increasing threat to amphibians worldwide.
Hannah Keely Smith, Frank Pasmans, Maarten Dhaenens, Dieter Deforce, Dries Bonte, Kris Verheyen, Luc Lens, An Martel   +7 more
doaj   +1 more source

Subspecies taxonomy reflects social and geographic patterns of taxonomic effort in tetrapods

Conservation Biology, EarlyView.
Abstract Subspecies have been used in conservation biology to account for intraspecific patterns in genetic diversity, which is crucial to long‐term population viability. Although over 3200 subspecies are currently assessed by the International Union for Conservation of Nature Red List, their biological relevance remains controversial.
Jhonny J. M. Guedes, José Alexandre F. Diniz‐Filho, André V. L. Freitas, Mario R. Moura   +3 more
wiley   +1 more source

Recurrent turnover of senescent cells during regeneration of a complex structure

eLife, 2015
Cellular senescence has been recently linked to the promotion of age-related pathologies, including a decline in regenerative capacity. While such capacity deteriorates with age in mammals, it remains intact in species such as salamanders, which have an ...
Maximina H Yun, Hongorzul Davaapil, Jeremy P Brockes   +2 more
doaj   +1 more source

Melanism in salamanders: effects of insularity, sex and size on dorsal colouration in Salamandra salamandra

Journal of Zoology, EarlyView.
In this study we tested the effects of insularity on amphibian colouration using the fire salamander as a model system. Although increased melanism was not a consistent pattern across all islands, salamanders from one island exhibited higher proportions of black pigmentation than mainland populations, while insular populations overall showed reduced ...
L. Alarcón‐Ríos, M. Saabi González, G. Velo‐Antón   +2 more
wiley   +1 more source

Potential risk of Batrachochytrium salamandrivorans in Mexico.

PLoS ONE, 2019
The recent decline in populations of European salamanders caused by the chytrid fungus Batrachochytrium salamandrivorans (Bsal) has generated worldwide concern, as it is a major threat to amphibians.
M Delia Basanta, Eria A Rebollar, Gabriela Parra-Olea   +2 more
doaj   +1 more source

Fgf-signaling is compartmentalized within the mesenchyme and controls proliferation during salamander limb development

eLife, 2019
Although decades of studies have produced a generalized model for tetrapod limb development, urodeles deviate from anurans and amniotes in at least two key respects: their limbs exhibit preaxial skeletal differentiation and do not develop an apical ...
Sruthi Purushothaman, Ahmed Elewa, Ashley W Seifert   +2 more
doaj   +1 more source