Results 131 to 140 of about 316 (161)
Some of the next articles are maybe not open access.
Sexual dimorphism, deformations, and epibionts of Phrynops tuberosus (Testudines, Chelidae)
Animal Biology, 2015Studies focusing on the natural history of species are essential for developing effective conservation measures and evaluating ecological hypotheses. To this end, we describe natural history data of the Cotinga River toadhead turtle,Phrynops tuberosus, in the Banabuiú River in Ceará, Brazil, and evaluated sexual dimorphism, epibionts, and mutilation ...
João Fabrício Mota Rodrigues +1 more
openaire +1 more source
Feeding patterns ofChelus fimbriatus(Pleurodira:Chelidae)
Journal of Experimental Biology, 2002SUMMARYThe kinematics of feeding on fish have been studied in the aquatic feeding specialist Chelus fimbriatus, the fringed turtle, to provide a basic description of complete feeding cycles. Anatomical findings supplement the kinematic results. High-speed video (500 frames s-1) recordings and X-ray film (150 frames s-1) are used to analyse the ...
Lemell, Patrick +5 more
openaire +3 more sources
Dispersal of Phrynops geoffroanus (Chelidae) in an Urban River in Central Brazil
Chelonian Conservation and Biology, 2008Abstract We studied dispersal of Phrynops geoffroanus in a polluted urban stream in central Brazil. Dispersal distances ranged from 0.0 to 115.0 m after 72 hours and home range size ranged from 0.04 to 0.12 ha. Turtle dispersal for adults and juveniles was accentuated in the first 3 hours with a predominantly upstream movement.
Franco Leandro Souza +3 more
openaire +1 more source
Demographic Parameters of the Neotropical Freshwater Turtle Hydromedusa maximiliani (Chelidae)
Herpetologica, 2009Abstract Despite the high species richness of the family Chelidae (side-necked turtles) in South America, few demographic studies are available for a neotropical chelid turtle. Here we report data from a long-term (1993–2006) study of Hydromedusa maximiliani.
Fernando I. Martins, Franco L. Souza
openaire +1 more source
Reproduction of the Australian freshwater turtle Emydura krefftii (Chelonia: Chelidae)
Journal of Zoology, 1983A study of the reproduction of Krefft's river tortoise, Emydura krefftii, was conducted in the perched dune lakes of Fraser Island, Queensland. Mature male specimens exhibit a postnuptial pattern of spermatogenesis typical of temperate‐zone turtles elsewhere, with a peak in spermatogenic activity in autumn and a cessation of activity during the ...
openaire +4 more sources
A new species and subgenus of Elseya (Testudines: Pleurodira: Chelidae) from New Guinea
Zootaxa, 2015The New Guinea freshwater turtle, Elseya novaeguineae (senu lato) is a long-term, widespread resident of New Guinea and has been subject to substantial vicariance in one of the most geologically dynamic regions on earth. Thus, it should come as no surprise that the taxonomy of this turtle is poorly resolved. Elseya novaeguineae has long been recognized
Thomson, Scott +3 more
openaire +2 more sources
Micron, 2008
The aim of this study was to present a morphological description of the leukocytes of Phrynops hilarii turtles according to the seasonal distribution of these cells and to show their replacement in the blood circulation using a radioautographic method. Five animals of both sexes weighing 600-1200 g were used.
Pitol, Dimitrius Leonardo +3 more
openaire +3 more sources
The aim of this study was to present a morphological description of the leukocytes of Phrynops hilarii turtles according to the seasonal distribution of these cells and to show their replacement in the blood circulation using a radioautographic method. Five animals of both sexes weighing 600-1200 g were used.
Pitol, Dimitrius Leonardo +3 more
openaire +3 more sources
Journal of Natural History, 1995
Polystomoides scottae n. sp. is described from the urinary and accessory bladders of Chelodina expansa. Four species of Neopolystoma are described from the conjunctival sacs of Australian freshwater turtles (Chelidae): Neopolystoma cribbi n. sp. from Emydura signata, E. macquarii, Elseya latisternum and Chelodina expansa; Neopolystoma spratti n.
openaire +4 more sources
Polystomoides scottae n. sp. is described from the urinary and accessory bladders of Chelodina expansa. Four species of Neopolystoma are described from the conjunctival sacs of Australian freshwater turtles (Chelidae): Neopolystoma cribbi n. sp. from Emydura signata, E. macquarii, Elseya latisternum and Chelodina expansa; Neopolystoma spratti n.
openaire +4 more sources
The Ecology of the Western Swamp Tortoise Pseudemydura Umbrina (Testudines: Chelidae).
Wildlife Research, 1981Western swamp tortoise (Pseudemydura umbrina) was rediscovered in Western Australia in 1954. It is a relict species of a monotypic genus, of very restricted range and specialized habitat. Population was estimated to be 13 to 45 and decreasing at 1 of its 2 native reserves and to be 10 to 45 and static at the other reserve.
openaire +1 more source
A Review of Neurals in Chelidae (Testudines: Pleurodira) with Reference to Phylogeny of the Family
Chelonian Conservation and Biology, 2019Abstract This study investigated the vertebral carapace structure of some Australian chelids to compare the skeletal anatomy of taxa that do not routinely have neurals with those that do.
openaire +1 more source