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001 on1001281625;

003 OCoLC;

005 20171215023425.0;

006 m o d ;

007 cr unu||||||||;

008 170816s2017 ncua obm 000 0 eng d;

035 a| (Sirsi) o1001281625;

035 a| (OCoLC)1001281625;

049 a| EREE;

090 a| QL668.E24;

100 1 a| Dormio, Samantha Mary,e| author.?| UNAUTHORIZED;

245 10 a| Investigating the effects of larval phenotypes on traits exhibited at a crucial life-history switch point /c| by Samantha Mary Dormio.;

264 1 a| [Greenville, N.C.] :b| [East Carolina University],c| 2017.;

300 a| 54 pages :b| illustrations (some color);

336 a| textb| txt2| rdacontent;

337 a| computerb| c2| rdamedia;

338 a| online resourceb| cr2| rdacarrier;

347 a| text fileb| PDFc| 753.1 KB2| rda;

538 a| System requirements: Adobe Reader.;

538 a| Mode of access: World Wide Web.;

502 b| M.S.c| East Carolina Universityd| 2017;

500 a| Presented to the faculty of the Department of Biology;

500 a| Advisor: Michael W. McCoy;

500 a| Title from PDF t.p. (viewed December 8, 2017).;

520 3 a| In organisms with complex life histories, phenotypes exhibited in non-reproductive life stages are often correlated with adult performance and fitness. For example, in anurans (frogs and toads), age and size at metamorphosis is commonly correlated with age at maturity, fecundity, predator avoidance and competitive ability. However, the mechanisms that lead to variation in fitness-associated traits at metamorphosis are less well understood. This study investigated how hatchling body size and hatchling activity level affected fitness-associated traits at metamorphosis in squirrel treefrogs (Hyla squirella), and whether the effects of hatchling phenotypes varied with risk of predation. I demonstrate how hatchling phenotypes, predation risk, and interactions of the two, affected H. squirella larval survival as well as fitness-associated traits at metamorphosis. Without predation, initially small and less active hatchlings emerged with traits of better quality at metamorphosis. With predation, initially large, small and active hatchlings emerged with increased trait quality at metamorphosis, while initially less active hatchling trait quality reduced at metamorphosis. This study provides an important step towards improving our understanding of how mechanisms carry over to affect variation in the timing of and phenotypes exhibited at metamorphosis.;

504 a| Includes bibliographical references.;

650 0 a| Hylax| Larvaex| Physiology.=| ^A36895;

650 0 a| Metamorphosis.=| ^A35375;

650 0 a| Predation (Biology)=| ^A30865;

650 0 a| Survival analysis (Biometry)=| ^A325761;

653 a| Carry Over Effects;

653 a| Variation;

700 1 a| McCoy, Michael,e| degree supervisor.=| ^A136549;

710 2 a| East Carolina University.b| Department of Biology.=| ^A637467;

856 40 z| Access via ScholarShipu| http://hdl.handle.net/10342/6334;

949 o| wjh;

994 a| C0b| ERE;

596 a| 1 4;

998 a| 4733371;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 4733371-1001l| JNETm| JOYNERr| Ys| Yt| JNE3ETDu| 8/16/2017x| ETDz| JERESOURCE;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 4733371-2001l| HSLELECm| HSLr| Ys| Yt| HEETDu| 8/16/2017x| ETDz| HERESOURCE;

Investigating the effects of larval phenotypes on traits exhibited at a crucial life-history switch point / by Samantha Mary Dormio.

Author/creator	Dormio, Samantha Mary author.
Other author	McCoy, Michael, degree supervisor.
Other author	East Carolina University. Department of Biology.
Format	Theses and dissertations
Publication	[Greenville, N.C.] : [East Carolina University], 2017.
Description	54 pages : illustrations (some color)
Supplemental Content	Access via ScholarShip
Subjects	Hyla--Larvae. --Physiology. Metamorphosis. Predation (Biology) Survival analysis (Biometry)

Summary	In organisms with complex life histories, phenotypes exhibited in non-reproductive life stages are often correlated with adult performance and fitness. For example, in anurans (frogs and toads), age and size at metamorphosis is commonly correlated with age at maturity, fecundity, predator avoidance and competitive ability. However, the mechanisms that lead to variation in fitness-associated traits at metamorphosis are less well understood. This study investigated how hatchling body size and hatchling activity level affected fitness-associated traits at metamorphosis in squirrel treefrogs (Hyla squirella), and whether the effects of hatchling phenotypes varied with risk of predation. I demonstrate how hatchling phenotypes, predation risk, and interactions of the two, affected H. squirella larval survival as well as fitness-associated traits at metamorphosis. Without predation, initially small and less active hatchlings emerged with traits of better quality at metamorphosis. With predation, initially large, small and active hatchlings emerged with increased trait quality at metamorphosis, while initially less active hatchling trait quality reduced at metamorphosis. This study provides an important step towards improving our understanding of how mechanisms carry over to affect variation in the timing of and phenotypes exhibited at metamorphosis.
General note	Presented to the faculty of the Department of Biology
General note	Advisor: Michael W. McCoy
General note	Title from PDF t.p. (viewed December 8, 2017).
Dissertation note	M.S. East Carolina University 2017
Bibliography note	Includes bibliographical references.
Technical details	System requirements: Adobe Reader.
Technical details	Mode of access: World Wide Web.

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Investigating the effects of larval phenotypes on traits exhibited at a crucial life-history switch point / by Samantha Mary Dormio.

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