Literaturdatenbank
Literaturdatenbank |
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Glorioso, B. M., & Cobb, V. A. (2012). Diel and temporal activity indicated by feeding in the eastern musk turtle, sternotherus odoratus, at reelfoot lake tennessee. Herpetological Conservation and Biology, 7(3), 323–329.
Added by: Admin (06 Jan 2014 18:22:50 UTC) |
| Resource type: Journal Article BibTeX citation key: Glorioso2012 View all bibliographic details  |
Categories: General Keywords: Habitat - habitat, Kinosternidae, Nordamerika - North America, Schildkröten - turtles + tortoises, Sternotherus odoratus, Verhalten - ethology Creators: Cobb, Glorioso Collection: Herpetological Conservation and Biology |
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| Abstract |
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The time of day an organism is active affects the availability of resources and the potential competitors and predators it encounters. There is inconsistent information in the literature regarding the diel activity of the Eastern Musk Turtle, Sternotherus odoratus, with varying sources referring to the species as diurnal, nocturnal, and crepuscular. We investigated diel and temporal activity of S. odoratus in a roadside slough adjacent to Reelfoot Lake, Tennessee, USA, from September 2004 to November 2005 using baited deep-water crawfish nets. This active capture technique allows for precise times of activity to be determined based on feeding. In 29 sampling occasions, we captured 866 S. odoratus, comprising 655 individuals. Sternotherus odoratus showed generally crepuscular feeding habits, with a peak of feeding activity 0600–1100, and a less pronounced peak 1600–1900. Time of capture was not correlated with the sex or size of S. odoratus. Although some captures came at night, nocturnal feeding was not prevalent in this population. Sternotherus odoratus captures were affected by the time of initial net placement; 52% of total captures came within the first 3 h of setting the nets. The feeding season in 2005, based on dates of first (16 April) and last (19 November) captures was estimated to be 218 days.
Added by: Admin |