Results 41 to 50 of about 464 (137)

Assessing the Presence, Pattern, and Environmental Correlates of Seasonal Skin Thickening in Anurans

open access: yesIntegrative Zoology, EarlyView.
Histological sections, like that of the ventral pectoral skin of Lithobates pipiens, were measured to assess variation in skin thickness throughout the year in three North American anuran species. After correcting for individual body size, we test whether skin thickness changes throughout the year and which factors (environment or life history) explain
Collin S. VanBuren   +3 more
wiley   +1 more source

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

open access: yesIntegrative 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   +6 more
wiley   +1 more source

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

open access: yesIntegrative 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   +6 more
wiley   +1 more source

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

open access: yesIntegrative 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   +3 more
wiley   +1 more source

Geographical Variation in Thermal Adaptation of the Asiatic Toad (Bufo gargarizans)

open access: yesIntegrative Zoology, EarlyView.
Northern and southern populations of Bufo gargarizans exhibit coordinated divergence in thermal preference, resting metabolic rate, and TRPM4 temperature sensitivity along a climatic gradient. ABSTRACT Thermal adaptation in animals can manifest in multiple dimensions, yet few studies have integrated behavioral, physiological, and molecular perspectives
Longcheng Fan, Yonghua Wu
wiley   +1 more source

Genomic Diversity of the Endangered Guinan Toad‐Headed Lizard and Its Conservation Implications

open access: yesIntegrative Zoology, EarlyView.
We produced HiFi long reads and assembled a high‐quality genome for the Guinan toad‐headed lizard—Phrynocephalus guinanensis—and present a comprehensive conservation genomics assessment. Our findings clearly show population structure, a reduced genetic diversity pattern, and a strong bottleneck in demographic history, reaffirming the endangered status ...
Ying Chen   +5 more
wiley   +1 more source

Chromosome‐Level Genome Assembly of Strauchbufo raddei and Multi‐Omic Insights Into Drought Adaptation

open access: yesIntegrative Zoology, EarlyView.
ABSTRACT Understanding how amphibians adapt to terrestrial and arid environments is important for elucidating vertebrate terrestrialization. In this study, we present the first chromosome‐level, high‐quality genome assembly of Strauchbufo raddei, constructed using PacBio HiFi long‐read sequencing and Hi‐C scaffolding. The assembled genome is 4.47 Gb in
Fanrui Chen   +7 more
wiley   +1 more source

Dorsal Crypsis and Chemical Defense Jointly Shape Brain Size in Toads

open access: yesIntegrative Zoology, EarlyView.
We found that total brain size and dorsal crypsis under both ultraviolet‐sensitive (UVS) and violet‐sensitive (VS) tetrachromatic bird visual models were negatively associated across eight species of toads. Our findings suggest that when species reduce predation risk by evolving increased dorsal crypsis, they may exhibit decreased brain size due to ...
Hong Wu   +6 more
wiley   +1 more source

Distinguishing pairwise species spatial associations from multi‐species distribution patterns

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract To understand species coexistence, measuring between‐species co‐distributional patterns is valuable. In the present study, we distinguished and separated pairwise species spatial associations (including between‐species distribution co‐occurrence and segregation) from multispecies distributional patterns (including aggregation, randomness and ...
Zhiyu Dong, Yongbin Wu, Youhua Chen
wiley   +1 more source

Some sharp inequalities for the Toader-Qi mean

open access: yes, 2015
The Toader-Qi mean of positive numbers $a$ and $b$ defined by \begin{equation*} TQ\left( a,b\right) =\frac{2}{π}\int_{0}^{π/2}a^{\cos ^{2}θ}b^{\sin ^{2}θ}dθ\end{equation*} is related to the modified Bessel function of the first kind. In this paper, we present several properties of this mean, and establish some sharp inequalities for this mean in terms ...
openaire   +2 more sources

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