Results 71 to 80 of about 18,448 (274)

From the brink of extinction to regulation: northern Europe's white‐tailed eagles now face density dependence and climate constraints after rapid population growth

Oikos, EarlyView.
Population growth reflects the combined influence of regulation and density‐independent factors operating through demographic processes. Under exceptional circumstances (e.g. populations recovering from near‐extinction), growth may initially be weakly regulated but typically slows as negative density dependence (NDD) sets in.
Bård‐Jørgen Bårdsen, Elisabeth Hansen, Jan Ove Bustnes   +2 more
wiley   +1 more source

Behavioral Patterns of Zoo‐housed Lowland (Tapirus terrestris) and Malayan tapirs (Tapirus indicus), With a Focus on Sleeping Behavior

Zoo Biology, EarlyView.
A behavioral study of the nocturnal activity budget and rhythmicity reveals the relationship between lying cycle (LC) duration and time spent in the REM‐sleep posture (“lying – head down”, LHD) in zoo‐housed Lowland tapirs (Tapirus terrestris) and Malayan tapirs (Tapirus indicus). ABSTRACT To ensure and optimize husbandry conditions, zoo management and
Melina Kurzawe, Yannis König, Isabel Seyrling, Max Hahn‐Klimroth, Gaby Schneider, Paul Wilhelm Dierkes   +5 more
wiley   +1 more source

Cenozoic Tectonics Ignite Mitochondrial Codon Innovations Propelling Canid Body Size Evolution and Transcontinental Radiations

Integrative Zoology, EarlyView.
We decode mitochondrial genomes across all extant canids, revealing lineage‐specific codon optimization driven by altitude, predation, and body size. A tripartite framework integrates geological events, metabolic constraints, and adaptive radiation to explain carnivore evolution.
Xiaoyang Wu, Xibao Wang, Yongquan Shang, Yao Chen, Haotian Cai, Tian Xia, Qinguo Wei, Weilai Sha, Honghai Zhang   +8 more
wiley   +1 more source

Host Phylogeny and Feeding Habit Jointly Govern Mammalian Gut Microbiota Composition

Integrative Zoology, EarlyView.
Herbivores showed higher alpha diversity than carnivores/omnivores, while omnivores had the highest beta diversity. Host phylogeny influenced gut microbiota more strongly in herbivores/omnivores, with phylogenetic distance correlating to microbiota dissimilarity.
Chaoyuan Cheng, Hongjuan Zhai, Jiajia Feng, Zhibin Zhang   +3 more
wiley   +1 more source

Exploring the complexity of community perceptions toward Przewalski's gazelle conservation

Conservation Science and Practice, EarlyView.
To understand local perceptions toward Przewalski's gazelle conservation, we combined two clustering analysis methods to identify four primary types of perspectives and key influencing factors regarding the conservation of Przewalski's gazelle within the local community.
Wenxuan Ma, Jinglan Liu, Xiaoli Fan, Yuqi Liu, Hongxiu Guo, Fan Xue   +5 more
wiley   +1 more source

Fetal and early post-natal mineralization of the tympanic bulla in fin whales may reveal a Hitherto undiscovered evolutionary trait. [PDF]

PLoS ONE, 2012
The evolution of the cetacean skeleton followed a path that differentiated this group from other terrestrial mammals about 50 million years ago [1], and debate is still going on about the relationships between Cetacea and Artiodactyla [2], [3], [4]. Some
Bruno Cozzi, Michela Podestà, Sandro Mazzariol, Alessandro Zotti   +3 more
doaj   +1 more source

New material of Diacodexis (Mammalia, Artiodactyla) from the early Eocene of Southern Europe

Geobios, 2018
Diacodexeidae are the first representatives of Artiodactyla in the fossil record. Their first occurrence is at the very base of the Ypresian (earliest Eocene, 56.0 Ma) with Diacodexis, a genus well diversified during the early Eocene in Europe ...
M. Boivin, M. Orliac, Miguel Telles Antunes, M. Godinot, Y. Laurent, B. Marandat, Dominique Vidalenc, Rodolphe Tabuce   +7 more
semanticscholar   +1 more source

Griffin Mound Site (41UR142) Faunal Analyses [PDF]

, 2001
The investigation of the Griffin Mound site (41UR142) in the Little Cypress Creek basin in Upshur County, Texas, yielded 394 faunal specimens with a total assemblage weight of 127.71 grams.
Schniebs, LeeAnna
core   +1 more source

Comparative functional morphological study of the tarsal joint mobility in artiodactyls and perissodactyls in light of astragalar morphological differences

Journal of Anatomy, EarlyView.
This study investigated how variations in the shape of the astragalus affect tarsal joint behavior, using CT scans. In artiodactyls with a double‐pulley astragalus, the calcaneus shifted plantarly during plantarflexion. This suggests the movement increases hindlimb functional length and contributes to enhanced running speed.
Sei‐ichiro Takeda, Yoichi Masuda, Truong Son Nguyen, Hideki Endo   +3 more
wiley   +1 more source

Postcranial anatomy of the Miocene hippopotamoids of Toros‐Menalla, Chad

Journal of Anatomy, EarlyView.
We establish a framework for the identification of postcranial remains in hippopotamoids by describing and comparing for the first time two late Miocene hippopotamoids from Toros‐Menalla, Chad (Hexaprotodon garyam, an early hippopotamid, and Libycosaurus bahri, the last African anthracothere) with the common hippopotamus.
Lorenzo Scribano, Fabrice Lihoreau, Alexandra Houssaye, Clarisse Nekoulnang Djetounako, Jean‐Renaud Boisserie   +4 more
wiley   +1 more source