Search Results - "Seigel, R. A."

Phenotypic Plasticity in Reproductive Traits: Geographical Variation in Plasticity in a Viviparous Snake by Seigel, R. A., Ford, N. B.

“…1. Previous experiments showed that Checkered Garter Snakes (Thamnophis marcianus) from south Texas, USA (an environment subject to high seasonal and annual…”
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Intra-individual variation in clutch and offspring size in an oviparous snake by Ford, N. B., Seigel, R. A.

“…Intra‐individual variation can be extremely informative in understanding the evolution of life‐history traits. In this study, we examined intra‐individual…”
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The influence of female body size and shape on the trade-off between offspring number and offspring size in two viviparous snakes by Ford, N. B., Seigel, R. A.

“…Although the trade‐off between offspring size and the number of offspring is a critical component of life‐history theory, many empirical tests fail to show…”
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Relocation, Repatriation, and Translocation of Amphibians and Reptiles: Are They Conservation Strategies That Work? by Dodd, C. Kenneth, Seigel, Richard A.

“…Conservation strategies involving relocations, repatriations, and translocations (RRT) have been carried out, are underway, or are advocated for a number of…”
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Postbreeding Movements of the Dark Gopher Frog, Rana sevosa Goin and Netting: Implications for Conservation and Management by Richter, Stephen C., Young, Jeanne E., Seigel, Richard A., Johnson, Glen N.

“…Conservation plans for amphibians often focus on activities at the breeding site, but for species that use terrestrial habitats for much of the year, an…”
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Reduction in Locomotor Ability as a Cost of Reproduction in Gravid Snakes by Seigel, R. A., M. M. Huggins, Ford, N. B.

“…Recent studies suggest that lower survival among gravid squamate reptiles may be partially the result of decreased locomotor ability during gestation. In this…”
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Effect of Energy Input on Variation in Clutch Size and Offspring Size in a Viviparous Reptile by Seigel, R. A., Ford, N. B.

“…1. We tested the effect of manipulating food intake on variance in clutch size and offspring size in a viviparous snake (Thamnophis marcianus). 2. We found…”
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Phenotypic Plasticity in Reproductive Traits: Evidence from a Viviparous Snake by Ford, Neil B., Seigel, Richard A.

“…A number of recent studies have indicated that life history characteristics (e.g., number of offspring, offspring size, age at sexual maturity) are strongly…”
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Changes in a population of an endangered rattlesnake Sistrurus catenatus following a severe flood by Seigel, Richard A., Sheil, Christopher A., Doody, J.Sean

“…We studied changes in the abundance, population structure, and reproductive traits of an endangered rattlesnake Sistrurus catenatus between 1979–1983 and…”
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An Experimental Study of the Trade-Offs Between Age and Size at Maturity: Effects of Energy Availability by Ford, N. B., Seigel, R. A.

“…1. We examined the effect of differential energy input on age at first reproduction in an oviparous snake, Elaphe guttata, to address two questions: (i) Does…”
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Annual Variation in Reproduction in Snakes in a Fluctuating Environment by Seigel, R. A., Fitch, H. S.

“…(1) We studied annual variation in clutch or litter size in five populations of four species of North American snakes: Diadophis punctatus (L.), Thamnophis…”
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Relationships among Body Size, Clutch Size, and Egg Size in Three Species of Oviparous Snakes by Ford, Neil B., Seigel, Richard A.

“…Many species of reptiles exhibit complex interrelationships among maternal body size, clutch size, and offspring size. Although female size and clutch size are…”
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Ecology of a Specialized Predator: Regina grahami in Missouri by Seigel, Richard A.

“…I studied the ecology of a discrete population of Graham's crayfish snake (Regina grahami) in northwestern Missouri continuously from 1979-1983. As is true of…”
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Temporal Changes in Reptile Populations: Effects of a Severe Drought on Aquatic Snakes by Seigel, Richard A., Gibbons, J. Whitfield, Tracy K. Lynch

“…During the summers of 1985-1987, the southeastern United States suffered a drought equaled in severity only five times since AD 372. We monitored the abundance…”
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Phenotypic Plasticity in the Reproductive Characteristics of an Oviparous Snake, Elaphe guttata: Implications for Life History Studies by Seigel, Richard A., Ford, Neil B.

“…Previous field studies of squamate reptiles have shown that many life history traits show a significant amount of phenotypic plasticity, especially in response…”
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Stochastic variation in reproductive success of a rare frog, Rana sevosa: implications for conservation and for monitoring amphibian populations by RICHTER, Stephen C, YOUNG, Jeanne E, JOHNSON, Glen N, SEIGEL, Richard A

“…Gopher frogs Rana sevosa were studied over the period 1988 2001 at Glen's Pond, an ephemeral pond located in De Soto National Forest, MS, and the population…”
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Translocations of Amphibians: Proven Management Method or Experimental Technique? by Seigel, Richard A., Dodd, C. Kenneth

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VARIATION IN HATCHLING TORTOISE SURVIVORSHIP AT THREE GEOGRAPHIC LOCALITIES by Pike, David A., Seigel, Richard A.

“…Survivorship of hatchling chelonians is low in many instances, although few investigators have intensively studied the immature life stages. We used radio…”
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Ecological Patterns of Relative Clutch Mass in Snakes by Seigel, Richard A., Fitch, Henry S.

“…Data on the relative clutch mass of snakes are summarized for over 100 populations. RCM was significantly lower in live bearing versus egg laying forms. We…”
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Reproductive Cycles and Temporal Variation in Fecundity in the Black Swamp Snake, Seminatrix pygaea by Seigel, Richard A., Loraine, Raymond K., Gibbons, J. Whitfield

“…We studied the reproductive ecology of female black swamp snakes (Seminatrix pygaea) at Ellenton Bay, South Carolina, from 1983-1987. Females followed a Type I…”
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