Diel Activity Patterns of the Turtle Assemblage of a Northern Indiana Lake

Abstract We investigated the daily activity patterns of seven species of turtles in a northern Indiana lake over 10 y using the numbers of captures in fyke nets as an index of activity. Chrysemys picta and Graptemys geographica were active throughout the daylight hours. Sternotherus odoratus and Chelydra serpentina were crepuscular. Trachemys scripta was diurnal; however, its activity was concentrated in the morning hours. Apalone spinifera was diurnal as well, with most activity in the afternoon and very little in the morning. Emydoidea blandingii was rarely captured, and all captures were made during daytime hours. Activity patterns did not change substantially between two sampling periods from mid-May to mid-June and from late-July to early-August. These activity patterns are consistent with differences in the frequency of basking: baskers are diurnal (e.g., C. picta, G. geographica, T. scripta, E. blandingii and A. spinifera), whereas those that are secretive are crepuscular (e.g., S. odoratus and C. serpentina).

[1]  J. Rowe.  Activity and Movements of Midland Painted Turtles (Chrysemys picta marginata) Living in a Small Marsh System on Beaver Island, Michigan , 2003 .

[2]  M. Costantini,et al.  Cascading effects of predatory fish exclusion on the detritus-based food web of a lake littoral zone (Lake Vico, central Italy) , 2002, Oecologia.

[3]  J. Iverson,et al.  Sex Ratio of Common Musk Turtles (Sternotherus odoratus) in aNorth-Central Indiana Lake: a Long-Term Study , 2002 .

[4]  S. Minton.  Amphibians and Reptiles of Indiana , 2001 .

[5]  R. Bury,et al.  Response of juvenile softshell turtles (Apalone mutica) in a thermal gradient , 2001 .

[6]  M. J. Adams,et al.  Response of hatchling and yearling turtles to thermal gradients: comparison of Chelydra serpentina and Trachemys scripta , 2000 .

[7]  P. Lindeman.  Resource use of five sympatric turtle species: effects of competition, phylogeny, and morphology , 2000 .

[8]  J. Lovich,et al.  Turtles of the United States and Canada , 1995 .

[9]  R. Brooks,et al.  EFFECTS OF SEX AND BODY SIZE ON BASKING BEHAVIOR IN A NORTHERN POPULATION OF THE PAINTED TURTLE, CHRYSEMYS PICTA , 1995 .

[10]  J. Rowe,et al.  A radiotelemetric study of activity and movements of the blanding's turtle (Emydoidea blandingi) in northeastern Illinois , 1991 .

[11]  James F. Jackson.  Crevice occupation by musk turtles: taxonomic distribution and crevice attributes , 1988, Animal Behaviour.

[12]  J. Iverson.  Growth in the Common Map Turtle, Graptemys geographica , 1988 .

[13]  C. H. Ernst.  Ecology of the Turtle, Sternotherus odoratus, in Southeastern Pennsylvania , 1986 .

[14]  R. Newman,et al.  Size-selective predation on Gammarus pseudolimnaeus by trout and sculpins , 1984 .

[15]  J. Spotila,et al.  Operative Environmental Temperatures and Basking Behavior of the Turtle Pseudemys Scripta , 1983 .

[16]  M. Obbard,et al.  A Radio-telemetry and Mark-Recapture Study of Activity in the Common Snapping Turtle, Chelydra serpentina , 1981 .

[17]  T. Graham.  Locomotor Activity in the Blanding's Turtle, Emydoidea blandingii (Reptilia, Testudines, Emydidae): The Phasing Effect of Temperature , 1979 .

[18]  T. Graham,et al.  Turtle diel activity: Response to different regimes of temperature and photoperiod , 1979 .

[19]  H. T. Reynolds,et al.  The analysis of cross-classifications , 1977 .

[20]  C. H. Ernst.  Population Dynamics and Activity Cycles of Chrysemys picta in Southeastern Pennsylvania , 1971 .

[21]  I. Mahmoud.  Comparative Ecology of the Kinosternid Turtles of Oklahoma , 1969 .

[22]  D. R. Boyer.  Ecology of the Basking Habit in Turtles , 1965 .

[23]  O. Sexton.  Spatial and Temporal Movements of a Population of the Painted Turtle, Chrysemys picta marginata (Agassiz) , 1959 .

[24]  A. Carr,et al.  Handbook of Turtles , 1952 .

[25]  A. Carr.  Handbook of Turtles: The Turtles of the United States, Canada, and Baja California , 1952 .

[26]  Fred R. Cagle,et al.  The Life History of the Slider Turtle, Pseudemys scripta troostii (Holbrook) , 1950 .

[27]  J. B. Calhoun.  Twenty-four hour periodicities in the animal kingdom. Part I. The invertebrates. , 1944 .

[28]  K. F. Lagler.  Food Habits and Economic Relations of the Turtles of Michigan with Special Reference to Fish Management , 1943 .