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035 a| (Sirsi) o1419035524;

035 a| (OCoLC)1419035524;

043 a| n-us-nc;

049 a| EREE;

090 a| QL639.25;

100 1 a| Warfel, Zachary Reece,e| author.?| UNAUTHORIZED;

245 10 a| Interannual variability in morphometric condition of larval fish as a function of environmental variables in Beaufort, NC /c| by Z. Reece Warfel.;

264 1 a| [Greenville, N.C.] :b| [East Carolina University],c| 2023.;

300 a| 1 online resource (92 pages) :b| illustrations (some color), maps;

336 a| textb| txt2| rdacontent;

337 a| computerb| c2| rdamedia;

338 a| online resourceb| cr2| rdacarrier;

347 a| text fileb| PDFc| 4.065 MB2| rda;

538 a| System requirements: Adobe Reader.;

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

502 b| M.S.c| East Carolina Universityd| 2023.;

502 a| Presented to the Faculty of the Department of Biology;

500 a| Advisor: Rebecca Asch;

500 a| Title from PDF t.p. (viewed March 27, 2025).;

520 3 a| Recruitment can vary by several orders of magnitude and can be unpredictable from year-to-year, with its variability influenced by oceanic conditions experienced by fish larvae. Variations in larval abundance and condition have not been consistently related to juvenile abundance and recruitment for many fisheries species. By studying how environmental factors affect larval fish condition, we may be able to better anticipate when a high or low recruitment year occurs since condition affects larval fish growth and survival. This project aims to expand our understanding of the relationship between morphometric condition, environmental conditions, and prey abundance among four North Carolinian fishes: Atlantic Croaker (Micropogonias undulatus), Mojarra (Eucinostomus sp.), White Mullet (Mugil curema), and Broad Striped Anchovy (Anchoa hepsetus). All species had some aspect of their morphometric condition influenced by an environmental or ecological variable. Temperature and density dependent effects were fairly widespread, affecting the condition of 3 out of 4 species. Zooplankton effects were less widespread, affecting 2 out of 4 species. Interactions between temperature and zooplankton, while individually important, were less widespread, affecting only one species. The relationship between environmental variables and morphometric condition can lead to insight about the species dynamics that was not previously known. Future findings like these can lead to the development of better recruitment models.;

504 a| Includes bibliographical references.;

650 0 a| Population biologyz| North Carolinaz| Beaufort County.=| ^A27768;

650 0 a| Atlantic croakerz| North Carolinaz| Beaufort County.=| ^A249777;

650 0 a| White mulletz| North Carolinaz| Beaufort County.=| ^A1480020;

653 a| Principle Component Analysis;

653 a| Generalized Additive Mixed Models;

653 a| Morphometric Condition;

653 a| Larval Fish Recruitment;

700 1 a| Asch, Rebecca G.,e| degree supervisor.1| https://id.oclc.org/worldcat/entity/E39PCjyWKXPY8q9Trj68xjgV83=| ^A1384045;

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

856 40 z| Access via ScholarShipu| http://hdl.handle.net/10342/13263;

949 o| wjh;

994 a| C0b| ERE;

596 a| 1 4;

998 a| 6302780;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 6302780-1001l| JNETm| JOYNERr| Ys| Yt| JNE3ETDu| 1/26/2024x| ETDz| JERESOURCE;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 6302780-2001l| HSLELECm| HSLr| Ys| Yt| HEETDu| 1/26/2024x| ETDz| HERESOURCE;

Interannual variability in morphometric condition of larval fish as a function of environmental variables in Beaufort, NC / by Z. Reece Warfel.

Author/creator	Warfel, Zachary Reece author.
Other author	Asch, Rebecca G., degree supervisor.
Other author	East Carolina University. Department of Biology.
Format	Theses and dissertations
Publication	[Greenville, N.C.] : [East Carolina University], 2023.
Description	1 online resource (92 pages) : illustrations (some color), maps
Supplemental Content	Access via ScholarShip
Subjects	Fishes--Larvae. --North Carolina. --Beaufort County. Population biology--North Carolina. --Beaufort County. Ecological assessment (Biology)--Environmental aspects. --North Carolina. --Beaufort County. Atlantic croaker--North Carolina. --Beaufort County. White mullet--North Carolina. --Beaufort County.

Summary	Recruitment can vary by several orders of magnitude and can be unpredictable from year-to-year, with its variability influenced by oceanic conditions experienced by fish larvae. Variations in larval abundance and condition have not been consistently related to juvenile abundance and recruitment for many fisheries species. By studying how environmental factors affect larval fish condition, we may be able to better anticipate when a high or low recruitment year occurs since condition affects larval fish growth and survival. This project aims to expand our understanding of the relationship between morphometric condition, environmental conditions, and prey abundance among four North Carolinian fishes: Atlantic Croaker (Micropogonias undulatus), Mojarra (Eucinostomus sp.), White Mullet (Mugil curema), and Broad Striped Anchovy (Anchoa hepsetus). All species had some aspect of their morphometric condition influenced by an environmental or ecological variable. Temperature and density dependent effects were fairly widespread, affecting the condition of 3 out of 4 species. Zooplankton effects were less widespread, affecting 2 out of 4 species. Interactions between temperature and zooplankton, while individually important, were less widespread, affecting only one species. The relationship between environmental variables and morphometric condition can lead to insight about the species dynamics that was not previously known. Future findings like these can lead to the development of better recruitment models.
General note	Advisor: Rebecca Asch
General note	Title from PDF t.p. (viewed March 27, 2025).
Dissertation note	M.S. East Carolina University 2023.
Dissertation note	Presented to the Faculty of the Department of Biology
Bibliography note	Includes bibliographical references.
Technical details	System requirements: Adobe Reader.
Technical details	Mode of access: World Wide Web.

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Interannual variability in morphometric condition of larval fish as a function of environmental variables in Beaufort, NC / by Z. Reece Warfel.

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