Suchen
Suchergebnisse
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2023
Journal article
Getting to the Meat of It: The Effects of a Captive Diet upon the Skull Morphology of the Lion and Tiger
Zoo animals are crucial for conserving and potentially re-introducing species to the wild, yet it is known that the morphology of captive animals differs from that of wild animals. It is important to know how and why zoo and wild animal morphology differs to better care for captive animals and...Cooper, David M ; Yamaguchi, Nobuyuki ; Macdonald, David W ; Patterson, Bruce D ; Salkina, Galina P …
Panthera Leo , Panthera Tigris , Diet, Captive Animals, Shape, Wild Animal , Meat , and Skull
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2022
Journal article
Phenotypic plasticity determines differences between the skulls of tigers from mainland Asia
Tiger subspecific taxonomy is controversial because of morphological and genetic variation found between now fragmented populations, yet the extent to which phenotypic plasticity or genetic variation affects phenotypes of putative tiger subspecies has not been explicitly addressed. In order to assess the role of phenotypic plasticity in determining skull variation,... -
2017
Journal article
Rensching cats and dogs: feeding ecology and fecundity trends explain variation in the allometry of sexual size dimorphism
The tendency for sexual size dimorphism (SSD) to increase with body mass in taxa where males are larger, and to decrease when females are larger, is known as Rensch's rule. In mammals, where the trend occurs, it is believed to be the result of a competitive advantage for larger males,...Johnson, P J ; Noonan, M J ; Kitchener, Andrew C ; Harrington, L A ; Newman, C …
dimorphism, Canidae, allometry, diet, resource dispersion, and Felidae
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2016
Journal article
Sexual size dimorphism in musteloids: An anomalous allometric pattern is explained by feeding ecology
Rensch's rule states that sexual size dimorphism (SSD) increases with body size in taxa where males are larger, and decreases when females are larger. The dominant explanation for the trend is currently that competitive advantage for males is greater in larger individuals, whereas female size is constrained by the energetics...Noonan, M J ; Johnson, Paul J ; Kitchener, Andrew C ; Harrington, L A ; Newman, C …
sociality, Musteloidea, diet, Rensch, SSD, resource dispersion, and allometry
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2015
Journal article
Mapping the spatial configuration of hybridization risk for an endangered population of the European wildcat (Felis silvestris silvestris) in Scotland
The wildcat in Scotland, UK, is currently at risk of extinction because of hybridization with feral domestic cats (ferals) and hybrids (wildcat × domestic cat crosses). Conservation efforts are hampered by limited information on the distribution of these three cat types and the spatial variation in hybridization risk. From January 2010 to...Kilshaw, Kerry ; Montgomery, Robert A ; Campbell, R D ; Hetherington, David A ; Johnson, Paul J …
Camera-trap – Distribution – Felis silvestris silvestris – Hybridization – Occupancy – Wildcat
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2014
Journal article
Detecting the elusive Scottish wildcat Felis silvestris silvestris using camera trapping
Population monitoring is important for conservation management but difficult to achieve for rare, cryptic species. Reliable information about the Critically Endangered Scottish wildcat Felis silvestris silvestris is lacking because of difficulties in morphological and genetic identification, resulting from extensive hybridization with feral domestic cats Felis catus. We carried out camera-trap... -
2013
Journal article
Locating specimens of extinct tiger (Panthera tigris) subspecies: Javan tiger (P.t. sondaica), Balinese tiger (P.t. balica), and Caspian tiger (P.t. virgata), including previously unpublished specimens
Recent advances in multivariate statistics, and in ancient DNA techniques, have greatly increased understanding of tiger phylogeography. However, regardless of advances in analytical methodology, researchers will continue to need access to specimens for morphological measurements and sampling for genetic analysis. The tiger has become increasingly endangered, and out of the...Yamaguchi, Nobuyuki ; Driscoll, Carlos A ; Werdelin, Lars ; Abramov, Alexei V ; Csorba, Gabor …
museum, Sunda Islands, Indonesia, Central Asia, and conservation
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2009
Journal article
Brain size of the lion (Panthera leo) and the tiger (P-tigris): implications for intrageneric phylogeny, intraspecific differences and the effects of captivity
Intraspecific encephalization of the lion and the tiger is investigated for the first time using a very large sample. Using cranial volume as a measure of brain size, the tiger has a larger brain relative to greatest length of skull than the lion, the leopard and the jaguar. The Asian...Yamaguchi, Nobuyuki ; Kitchener, Andrew C ; Gilissen, E ; Macdonald, David W
skull, Panthera pardus, morphology, Carnivora, subspecies, jaguar, cranial volume, leopard, Felidae, and Panthera onca