Search Results

You are looking at 1 - 3 of 3 items for

  • Author or Editor: John Himes x
  • Search level: All x
Clear All
Author:

Abstract

The midland water snake, Nerodia sipedon, is very abundant in portions of the southeastern U.S.A., where it may play an important role as a predator in freshwater communities. I examined whether foraging mode in naïve neonatal snakes was phenotypically plastic or canalized and I compared handling times and capture efficiencies for different prey types (juvenile fishes and frogs) between neonatal and adult snakes. I also tested for kin recognition by mother snakes by comparing their consumption of unrelated (non-kin) and related (kin) neonates according to time and the availability of alternative prey (fish). In addition, the response of prey in the presence and in the absence of snakes was tested by comparing the amount of time that juvenile fishes utilized areas containing different microhabitat complexities and by comparing the amount of time that fishes were actively moving. Overall, foraging mode was phenotypically plastic, handling times and capture efficiencies differed by prey type and snake size class, kin recognition was confirmed, and fishes did not alter their habitat selection or activity patterns in the presence of snakes.

Full Access
In: Amphibia-Reptilia
Author:

Abstract

The burrowing ecology of 12 adult and nine juvenile Louisiana pine snakes, Pituophis ruthveni, was studied during 1995-1997 in north-central Louisiana, U.S.A. Significantly more adult burrows connected to pocket gopher (Geomys breviceps) tunnels than did juvenile burrows, although a relatively high number of adult and juvenile snake burrows were blind-ended. Significantly more adult snake burrows were located in pine plantations and grasslands and significantly less were located in clearcuts than expected. Significantly more juvenile snake burrows were located in pine plantations than expected. Adult and juvenile snake burrows were located in areas that had relatively less leaf litter and canopy closure than expected. Excavation behavior by P. ruthveni was stereotyped and similar to excavation behavior by the bullsnake, Pituophis catenifer sayi and the northern pine snake, Pituophis melanoleucus melanoleucus.

Full Access
In: Amphibia-Reptilia