Phylogeographic uniformity in mitochondrial DNA of the snapping turtle (Chelydra serpentina)
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چکیده
منابع مشابه
Food imprinting in the snapping turtle, Chelydra serpentina.
Three groups of hatchling snapping turtles, totaling 20, were fed either meat, fish, or worms. When they were tested for preference after 12 daily feedings, each preferred the diet to which it was accustomed. After 12 more days of eating a different food, each still preferred its original diet. A form of imprinting may be operative in the feeding behavior of this species.
متن کاملGeographic variation in snapping turtle (Chelydra serpentina serpentina) egg components across a longitudinal transect
Common snapping turtles (Chelydra serpentina serpentina) have an extensive range across North America, inhabiting aquatic habitats in diverse thermal and hydric climates. Although geographic variation in reproductive characters such as female size, clutch size, and egg mass have been investigated, little is known about geographic variation in egg components. In this study, we examined variation...
متن کاملSomite formation in cultured embryos of the snapping turtle. Chelydra serpentina.
A simple, reliable method for the in vitro cultivation of snapping turtle embryos was demonstrated. This technique was used to study somite formation in explants containing segmental plates. Segmental plates formed a full complement of somites whether the neural tube or the neural tube and notochord was present. Explanted snapping turtle segmental plates formed an average of 6.6 +/- 1.2 somites...
متن کاملRedescription of Dracunculus globocephalus Mackin, 1927 (Nematoda: Dracunculidae), a parasite of the snapping turtle, Chelydra serpentina.
Dracunculus globocephalus Mackin, 1927 (Nematoda: Dracunculoidea) is redescribed from specimens collected from the mesentery of the snapping turtle, Chelydra serpentina (L.), in Louisiana, USA. The use of scanning electron microscopy, applied for the first time in this species, made it possible to study details in the structure of the cephalic end and the arrangement of male caudal papillae tha...
متن کاملRespiratory responses to short term hypoxia in the snapping turtle, Chelydra serpentina.
Among vertebrates, turtles are able to tolerate exceptionally low oxygen tensions. We have investigated the compensatory mechanisms that regulate respiration and blood oxygen transport in snapping turtles during short exposure to hypoxia. Snapping turtles started to hyperventilate when oxygen levels dropped below 10% O(2). Total ventilation increased 1.75-fold, essentially related to an increas...
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ژورنال
عنوان ژورنال: Animal Conservation
سال: 1998
ISSN: 1367-9430
DOI: 10.1017/s1367943098001073