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Caiman bite

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2015: PloS One
Tito Aureliano, Aline M Ghilardi, Edson Guilherme, Jonas P Souza-Filho, Mauro Cavalcanti, Douglas Riff
Purussaurus brasiliensis thrived in the northwestern portion of South America during the Late Miocene. Although substantial material has been recovered since its early discovery, this fossil crocodilian can still be considered as very poorly understood. In the present work, we used regression equations based on modern crocodilians to present novel details about the morphometry, bite-force and paleobiology of this species. According to our results, an adult Purussaurus brasiliensis was estimated to reach around 12...
2015: PloS One
Vidal Haddad, Waldicléa Cardoso Fonseca
We describe a fatal attack by a black caiman (Melanosuchus niger) on an 11-year-old child with comments on the reptile's aggression mechanisms and the conditions under which this kind of incident takes place in the Amazon region.
March 2011: Wilderness & Environmental Medicine
Lucio André Viana, Priscilla Soares, Fernando Paiva, Ricardo Lourenço-De-Oliveira
Mosquitoes that feed on crocodilians are poorly known, despite the potential role of these exothermic animals as reservoirs of arboviruses. In this article, we assessed the frequency, abundance, and temporal variation of caiman-biting mosquitoes as well as searched for the natural vectors of the blood parasite of caimans, Hepatozoon caimani, in the Pantanal area of central-western Brazil from captures conducted bimonthly from September 2006 to September 2007 and in February 2008. A total of 5,272 mosquitoes belonging to 10 species of five genera was caught on caimans...
July 2010: Journal of Medical Entomology
Stephanie E Pierce, Kenneth D Angielczyk, Emily J Rayfield
Extant and fossil crocodilians have long been divided into taxonomic and/or ecological groups based on broad patterns of skull shape, particularly the relative length and width of the snout. However, these patterns have not been quantitatively analyzed in detail, and their biomechanical and functional implications are similarly understudied. Here, we use geometric morphometrics and finite element analysis to explore the patterns of variation in crocodilian skull morphology and the functional implications of those patterns...
July 2008: Journal of Morphology
George Hertner
Caiman crocodilus, commonly called the spectacled caiman, is a very widely distributed resident of the western-hemisphere wetlands. Caiman bites to humans can cause trauma and infection. There are few reports of caiman bites; however, there is information about bites by other members of the same family, including Alligator mississippiensis. A case of acute caiman bite to the hand is described, including initial treatment and outcome. The bite resulted in multiple lacerations, interarticular fracture, and infection...
2006: Wilderness & Environmental Medicine
Colin R McHenry, Philip D Clausen, William J T Daniel, Mason B Meers, Atul Pendharkar
This article reports the use of simple beam and finite-element models to investigate the relationship between rostral shape and biomechanical performance in living crocodilians under a range of loading conditions. Load cases corresponded to simple biting, lateral head shaking, and twist feeding behaviors. The six specimens were chosen to reflect, as far as possible, the full range of rostral shape in living crocodilians: a juvenile Caiman crocodilus, subadult Alligator mississippiensis and Crocodylus johnstoni, and adult Caiman crocodilus, Melanosuchus niger, and Paleosuchus palpebrosus...
August 2006: Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology
Francisco Limeira-de-Oliveira, José Albertino Rafael, Augusto Loureiro Henriques
In Central Amazon, Brazil, the tabanid Phorcotabanus cinereus (Wiedemann) was recorded attacking the native duck Cairina moschata (Linnaeus) (Anseriformes, Anatidae). The flight and behavior of the tabanid during the attacks and the host's defenses were videotaped and analyzed in slow motion. The tabanid was recorded flying rapidly around the heads of the ducks before landing. Landing always took place on the beak, and then the tabanid walked to the fleshy caruncle on the basal part of the beak to bite and feed...
September 2002: Memórias do Instituto Oswaldo Cruz
O Tadokoro, H Mishima, T Maeda, Y Kozawa
The mode of development and structure of crocodilian teeth and periodontium parallels that of mammals, but the teeth are continuously replaced throughout the lifetime of those animals. In this report, the innervation and fibres of the crocodilian periodontal ligament were examined using histology, immunohistochemistry for S-100 protein and transmission electron microscopy. Crocodilian periodontal ligaments had the following characteristics: (1) horizontal fibres, which connect the alveolar bone to the root cementum and (2) longitudinal fibres, which ran parallel to the tooth axis, with nerves and blood vessels in the middle layer of the ligament...
January 1998: European Journal of Oral Sciences
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