Results 11 to 20 of about 69,368 (333)

Carapace Morphology Variations in Captive Tortoises: Insights from Three-Dimensional Analysis

Animals
The carapace morphology of tortoises is a crucial characteristic used for species identification, with features such as shell shape, roughness, and color patterns varying among species.
Ebru Eravci Yalin, Ozan Gündemir, Ebuderda Günay, Ezgi Can Vatansever Çelik, Sokol Duro, Tomasz Szara, Milos Blagojevic, Bektaş Sönmez, Mihaela-Claudia Spataru   +8 more
doaj   +2 more sources

Intraspecific variation in carapace morphology among fiddler crabs (Genus Uca) from the Atlantic coast of Brazil

Aquatic Biology, 2014
Isolation due to geographical barriers should promote genetic and morphological divergence among populations. Marine currents flowing in opposing directions along landmasses can constitute barriers that isolate populations dependent upon aquatic ...
KR Hampton, MJ Hopkins, JC McNamara, CL Thurman   +3 more
doaj   +2 more sources

Mechanical properties of the chitin-calcium-phosphate “clam shrimp” carapace (Branchiopoda: Spinicaudata): implications for taphonomy and fossilization [PDF]

, 2015
Timothy I. Astrop, Vasav Sahni, Todd A. Blackledge, Alyssa Y. Stark   +3 more
openalex   +2 more sources

A giant nektobenthic radiodont from the Burgess Shale and the significance of hurdiid carapace diversity

Royal Society Open Science, 2021
Radiodonts, stem-group euarthropods that evolved during the Cambrian explosion, were among the largest and most diversified lower palaeozoic predators. These animals were widespread geographically, occupying a variety of ecological niches, from benthic ...
Jean‐Bernard Caron, J. Moysiuk
openalex   +2 more sources

Impact Resistant Structure Design and Optimization Inspired by Turtle Carapace

Materials, 2022
The turtle carapace has a high level of protection, due to its unique biological structure, and there is great potential to use the turtle carapace structure to improve the impact resistance of composite materials using bionic theory.
B. Pei, Lei Guo, Xueqing Wu, M. Hu, Shuqin Wu, Yangwei Wang   +5 more
semanticscholar   +1 more source

The Daphnia carapace and the origin of novel structures

bioRxiv, 2021
Understanding how novel structures arise is a central question in evolution. Novel structures are often defined as structures that are not derived from (homologous to) any structure in the ancestor1.
Heather Bruce, N. Patel
semanticscholar   +1 more source

Optimal Background Color for Head-Starting Northern River Terrapins (Batagur baska Gray, 1831)

Animals, 2020
Background color has significant effects on the lifestyles of various animal species. In this study, the effects of wall background color on growth, feed utilization, specific activity of gastric and pancreatic enzymes in fecal samples, fecal thermal ...
Suthep Jualaong, Karun Thongprajukaew, Santi Ninwat, Natchapong Petchrit, Suwandee Khwanmaung, Wattana Wattanakul, Thana Tantipiriyakij, Hirun Kanghae   +7 more
doaj   +1 more source

Somatic Growth Rates of Juvenile Green Sea Turtles (<i>Chelonia mydas</i>) in the Fijian Archipelago. [PDF]

Ecol Evol
We measured somatic growth rates of 215 juvenile green turtles across three foraging sites in the Fijian Archipelago from 2015 to 2022, finding a mean growth rate of 1.6 ± 0.1 cm year−1 that declined non‐monotonically with size and varied spatially between sites.
Lemons GE, Turner Tomaszewicz CN, Prakash S, Miller K, Seminoff JA, Piovano S.   +5 more
europepmc   +2 more sources

Skeletal Anatomy of Acaenasuchus geoffreyi Long and Murry, 1995 (Archosauria: Pseudosuchia) and its Implications for the Origin of the Aetosaurian Carapace

Journal of Vertebrate Paleontology, 2020
Acaenasuchus geoffreyi is a diminutive armored archosaur from the Upper Triassic Chinle Formation of northern Arizona, U.S.A., with uncertain evolutionary relationships and skeletal maturity.
A. Marsh, Matthew E. Smith, W. Parker, R. Irmis, B. Kligman   +4 more
semanticscholar   +1 more source

Optimal Feeding Frequency for Captive Hawksbill Sea Turtle (Eretmochelys imbricata)

Animals, 2021
Hawksbill sea turtle (Eretmochelys imbricata) has been reared in head-starting captivity programs, while the feeding regimens have never been optimized.
Suthep Jualaong, Hirun Kanghae, Karun Thongprajukaew, Suktianchai Saekhow, Natthida Amartiratana, Piyanan Sotong   +5 more
doaj   +1 more source