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The Reproductive Ecology of Two Sympatric Demersal Fishes: the Naked Goby Gobiosoma Bosc and Striped Blenny Chasmodes Bosquianus

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The Reproductive Ecology of Two Sympatric Demersal Fishes: the Naked Goby Gobiosoma Bosc and Striped Blenny Chasmodes Bosquianus Coastal Carolina University CCU Digital Commons Electronic Theses and Dissertations College of Graduate Studies and Research 1-1-2014 The Reproductive Ecology of Two Sympatric Demersal Fishes: The akN ed Goby Gobiosoma bosc and Striped Blenny Chasmodes bosquianus Rachel M. Tremont Coastal Carolina University Follow this and additional works at: https://digitalcommons.coastal.edu/etd Part of the Aquaculture and Fisheries Commons Recommended Citation Tremont, Rachel M., "The Reproductive Ecology of Two Sympatric Demersal Fishes: The akN ed Goby Gobiosoma bosc and Striped Blenny Chasmodes bosquianus" (2014). Electronic Theses and Dissertations. 50. https://digitalcommons.coastal.edu/etd/50 This Thesis is brought to you for free and open access by the College of Graduate Studies and Research at CCU Digital Commons. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of CCU Digital Commons. For more information, please contact [email protected]. THE REPRODUCTIVE ECOLOGY OF TWO SYMPATRIC DEMERSAL FISHES: THE NAKED GOBY GOBIOSOMA BOSC AND STRIPED BLENNY CHASMODES BOSQUIANUS Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science in Coastal Marine and Wetland Studies in the College of Science Coastal Carolina University 2014 by Rachel M. Tremont Approval Sheet This thesis is submitted in partial fulfillment of the requirements for the M.S. degree in CMWS Approved: Rachel M. Tremont School of Coastal and Marine Systems Science Coastal Carolina University Dr. Juliana M. Harding Department of Marine Science Coastal Carolina University Dr. Dennis M. Allen Baruch Marine Field Laboratory University of South Carolina Dr. Robert F. Young Department of Marine Science Coastal Carolina University Dr. Richard F. Viso School of Coastal Marine Systems Science Graduate Studies Coordinator Dr. Michael H. Roberts Dean, College of Science TABLE OF CONTENTS Acknowledgements ........................................................................................................... v List of tables...................................................................................................................... vi List of figures ................................................................................................................... iix Abstract ......................................................................................................................... xviii Introduction ....................................................................................................................... 1 Chapter 1: Reproductive biology of the naked goby (Gobiosoma bosc) and the striped blenny (Chasmodes bosquianus)........................................................................ 10 Abstract ....................................................................................................................... 10 Introduction ................................................................................................................. 11 Methods....................................................................................................................... 17 Results ......................................................................................................................... 26 Discussion ................................................................................................................. 105 Chapter 2: Early life history of the naked goby (Gobiosoma bosc) and the striped blenny (Chasmodes bosquianus)................................................................................... 115 Abstract ..................................................................................................................... 115 Introduction ............................................................................................................... 116 Methods..................................................................................................................... 121 Results ....................................................................................................................... 132 Discussion ................................................................................................................. 163 Synthesis...................................................................................................................... ...169 Literature cited.................................................................................................................... 174 Vita ....................................................................................................................................... 188 Appendix 1: Linear regression coefficients with (standard error) used to test the slopes between male and female naked goby and striped blenny standard length iii (SL, mm) and body depth (BD, mm), whole fish wet tissue weight (WTW, g) and whole fish dry tissue weight (DTW, g), and SL and whole fish WTW and whole fish DTW. .................................................................................................................................... 189 Appendix 2: Summary of t-tests performed to evaluate sex-specific differences between naked goby and striped blenny linear regression slopes .................................. 191 Appendix 3: Naked goby and striped blenny week of the spawning season relative to calendar date on Sunday of each week during 2012 and average weekly water temperature (WT, °C, standard deviation).. .................................................................... 193 Appendix 4: Naked goby and striped blenny week of the spawning season relative to calendar date on Sunday of each week for 2013 and average weekly water temperature (WT, °C, standard deviation). ..................................................................... 195 Appendix 5: Demographic description of male naked gobies collected from North Inlet, SC from June 2012 through December 2013. ......................................................... 197 Appendix 6: Demographic description of female naked gobies collected from North Inlet, SC from June 2012 through December 2013 .......................................................... 199 Appendix 7: Demographic description of indeterminate naked gobies collected from North Inlet, SC from June 2012 through December 2013 .............................................. 201 Appendix 8: Demographic description of male striped blennies collected from North Inlet, SC from June 2012 through December 2013. ......................................................... 203 Appendix 9: Demographic description of female striped blennies collected from North Inlet, SC from June 2012 through December 2013. ............................................. 205 Appendix 10: Demographic description of indeterminate striped blennies collected from North Inlet, SC from June 2012 through December 2013. .............................. 207 Appendix 11: Percent (%) total length (mm) change from live total length (mm) for (A) age 0, (B) age 3, (C) age 6, (D) age 9 and (E) age 15 dph naked goby larvae after preservation in 10% Borax buffered formalin. .......................................................... 209 Appendix 12: Percent (%) total length (mm) change from live total length (mm) for (A) age 0, (B) age 3, (C) age 6, (D) age 9, (E) age 12 and (F) age 19 dph striped blenny larvae after preservation in 10% Borax buffered formalin. ........................ 211 iv ACKNOWLEDGEMENTS I would like to acknowledge my thesis committee including Dr. Juliana M. Harding, Dr. Dennis M. Allen, and Dr. Robert Young for their help and guidance during this project. In particular, I would like to thank my major advisor, Dr. Harding, for her assistance, patience, and support during this study. I would like to thank the USC Baruch Marine Field Laboratory faculty and staff including Dr. Allen, Paul Kenny, and Stephen Forehand for their help and extensive knowledge of North Inlet and estuarine fauna. Special thanks to Stephanie Krug, Sarah Dingley, Taylor Armstrong, Karla Stroud, Eric Haffey, and Katie O’Shaughnessy for their collection and culture help. Funding was provided by NOAA South Carolina Sea Grant Consortium (Award # M393), a Coastal Carolina University Research Incentive Grant (RMT), and the Coastal Marine and Wetland Studies Program at Coastal Carolina University. v LIST OF TABLES Table 1: Summary of naked goby and striped blenny life history metrics reported within their geographic range. Data that were not applicable are indicated by NA. Day- length data for each location were retrieved from the U.S. Naval Observatory (usno.navy.mil). .................................................................................................... 15 Table 2: Cumulative day-degree (CumD) estimates for the start and end dates of the naked goby and striped blenny spawning seasons for 2012 and 2013 using nest observations and the predicted onset threshold of 18°C. Predicted CumD estimates using the 18°C spawning temperature threshold are presented in parentheses. Cumulative week of the years (CumWOY) corresponds to the sampling week within the study period.. .............................................................. 30 Table 3: Standard length (SL, mm) frequency distribution for naked gobies and striped blennies collected from North Inlet, SC oyster reefs from June 2012 through December 2013. The number of fish examined by 5 mm standard length bins, sex, and species is presented. ......................................................................................
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