Short-Term Estimate of Finfish Bycatch Discards in the Inshore Artisanal Shrimp Fishery of Guyana
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Gulf and Caribbean Research Volume 31 Issue 1 2020 Short-term Estimate of Finfish Bycatch Discards in the Inshore Artisanal Shrimp Fishery of Guyana Leanna Kalicharan Department of Biology, University of Guyana, Turkeyen Campus, [email protected] Hazel A. Oxenford Centre for Resource Management and Environmental Studies, [email protected] Follow this and additional works at: https://aquila.usm.edu/gcr Part of the Aquaculture and Fisheries Commons, Biodiversity Commons, and the Marine Biology Commons To access the supplemental data associated with this article, CLICK HERE. Recommended Citation Kalicharan, L. and H. A. Oxenford. 2020. Short-term Estimate of Finfish Bycatch Discards in the Inshore Artisanal Shrimp Fishery of Guyana. Gulf and Caribbean Research 31 (1): GCFI 1-GCFI 9. Retrieved from https://aquila.usm.edu/gcr/vol31/iss1/1 DOI: https://doi.org/10.18785/gcr.3101.01 This Gulf and Caribbean Fisheries Institute Partnership is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Gulf and Caribbean Research by an authorized editor of The Aquila Digital Community. For more information, please contact [email protected]. VOLUME 25 VOLUME GULF AND CARIBBEAN Volume 25 RESEARCH March 2013 TABLE OF CONTENTS GULF AND CARIBBEAN SAND BOTTOM MICROALGAL PRODUCTION AND BENTHIC NUTRIENT FLUXES ON THE NORTHEASTERN GULF OF MEXICO NEARSHORE SHELF RESEARCH Jeffrey G. Allison, M. E. Wagner, M. McAllister, A. K. J. Ren, and R. A. Snyder....................................................................................1—8 WHAT IS KNOWN ABOUT SPECIES RICHNESS AND DISTRIBUTION ON THE OUTER—SHELF SOUTH TEXAS BANKS? Harriet L. Nash, Sharon J. Furiness, and John W. Tunnell, Jr. ......................................................................................................... 9—18 Volume 31 ASSESSMENT OF SEAGRASS FLORAL COMMUNITY STRUCTURE FROM TWO CARIBBEAN MARINE PROTECTED 2020 AREAS ISSN: 2572-1410 Paul A. X. Bologna and Anthony J. Suleski ............................................................................................................................................. 19—27 SPATIAL AND SIZE DISTRIBUTION OF RED DRUM CAUGHT AND RELEASED IN TAMPA BAY, FLORIDA, AND FAC- TORS ASSOCIATED WITH POST—RELEASE HOOKING MORTALITY Kerry E. Flaherty, Brent L. Winner, Julie L. Vecchio, and Theodore S. Switzer....................................................................................29—41 CHARACTERIZATION OF ICHTHYOPLANKTON IN THE NORTHEASTERN GULF OF MEXICO FROM SEAMAP PLANK- TON SURVEYS, 1982—1999 Joanne Lyczkowski—Shultz, David S. Hanisko, Kenneth J. Sulak, Ma gorzata Konieczna, and Pamela J. Bond ..................................43—98 ł GULF AND CARIBBEAN RESEAR Short Communications DEPURATION OF MACONDA (MC—252) OIL FOUND IN HETEROTROPHIC SCLERACTINIAN CORALS (TUBASTREA COCCINEA AND TUBASTREA MICRANTHUS) ON OFFSHORE OIL/GAS PLATFORMS IN THE GULF Steve R. Kolian, Scott Porter, Paul W. Sammarco, and Edwin W. Cake, Jr........................................................................................99—103 EFFECTS OF CLOSURE OF THE MISSISSIPPI RIVER GULF OUTLET ON SALTWATER INTRUSION AND BOTTOM WATER HYPOXIA IN LAKE PONTCHARTRAIN Michael A. Poirrier .............................................................................................................................................................................105—109 DISTRIBUTION AND LENGTH FREQUENCY OF INVASIVE LIONFISH (PTEROIS SP.) IN THE NORTHERN GULF OF MEXICO OF MEXICO Alexander Q. Fogg, Eric R. Hoffmayer, William B. Driggers III, Matthew D. Campbell, Gilmore J. Pellegrin, and William Stein ............................................................................................................................................................................................................111—115 NOTES ON THE BIOLOGY OF INVASIVE LIONFISH (PTEROIS SP.) FROM THE NORTHCENTRAL GULF OF MEXICO CH William Stein III, Nancy J. Brown—Peterson, James S. Franks, and Martin T. O’Connell ...............................................................117—120 RECORD BODY SIZE FOR THE RED LIONFISH, PTEROIS VOLITANS (SCORPAENIFORMES), IN THE SOUTHERN GULF OF MEXICO Alfonso Aguilar—Perera, Leidy Perera—Chan, and Luis Quijano—Puerto ...........................................................................................121—123 EFFECTS OF BLACK MANGROVE (AVICENNIA GERMINANS) EXPANSION ON SALTMARSH (SPARTINA ALTERNI- FLORA) BENTHIC COMMUNITIES OF THE SOUTH TEXAS COAST Jessica Lunt, Kimberly McGlaun, and Elizabeth M. Robinson..........................................................................................................125—129 TIME—ACTIVITY BUDGETS OF STOPLIGHT PARROTFISH (SCARIDAE: SPARISOMA VIRIDE) IN BELIZE: CLEANING INVITATION AND DIURNAL PATTERNS Wesley A. Dent and Gary R. Gaston .................................................................................................................................................131—135 FIRST RECORD OF A NURSE SHARK, GINGLYMOSTOMA CIRRATUM, WITHIN THE MISSISSIPPI SOUND Jill M. Hendon, Eric R. Hoffmayer, and William B. Driggers III......................................................................................................137—139 REVIEWERS ........................................................................................................................................................................................................141 INSTRUCTION TO AUTHORS ...............................................................................................................................................................142-143 Published by © 2013 The University of Southern Mississippi, Gulf Coast Published by Research Laboratory. MARCH 2013 Printed in the United States of America ISSN: 1528—0470 703 East Beach Drive All rights reserved. No part of this publication covered by the Ocean Springs, Mississippi 39564 copyright hereon may be reproduced or copied in any form or 228.872.4200 • FAX: 228.872.4204 by any means without written permission from the publisher. Ocean Springs, Mississippi www.usm.edu/gcrl Gulf and Caribbean Research Vol 31, GCFI 1-GCFI 9, 2020 Manuscript received, August 6, 2019; accepted, January 31, 2020 DOI: 10.18785/gcr.3101.01 GULF AND CARIBBEAN FISHERIES INSTITUTE PARTNERSHIP SHORT—TERM ESTIMATE OF FINFISH BYCATCH DISCARDS IN THE INSHORE ARTISANAL SHRIMP FISHERY OF GUYANA§ Leanna Kalicharan and Hazel A. Oxenford* Centre for Resource Management and Environmental Studies (CERMES), University of the West Indies, Cave Hill, Barbados; *Corresponding author, email: [email protected] ABSTRACT: The artisanal shrimp fishery in Guyana is important for livelihood and food security, involving around 300 vessels owned and crewed exclusively by Guyanese nationals. This fishery uses Chinese seines and operates in major river estuaries. It targets penaeid shrimp, but also retains some finfish and is known to discard a significant but undocumented quantity of smaller finfish bycatch. The lack of knowledge regarding the bycatch is a concern for fishery management and biodiversity conservation. In this study, we quantify for the first time the finfish bycatch discards through onboard observations (July—August 2016) of a single typical vessel operating in the Demerara estuary. Wet weights of the total catch, retained catch, and finfish discards were recorded separately for each of 76 seine hauls, and subsequently presented as catch rates per trip, catch rates per seine haul (kg/haul), and catch rates standardized per hour of seine net soak—time (kg/hr). A sub—sample of finfish discards was taken from every haul to determine taxonomic composition and species—specific length frequencies. Examination of 2,012 discarded finfish distributed among 32 species revealed high taxonomic diversity, none of which were considered vulnerable by the IUCN Red List. Most finfish discards were small (modal size class 5—7 cm fork length) and included juveniles of 15 species of importance to other fisheries in Guyana. On average, a standardized total catch rate of 14.8 kg was taken per hour of seine net soak—time, yielding 3.9 kg retained catch (shrimp and a few selected finfish), 10.3 kg of finfish bycatch discards, and 0.6 kg of miscellaneous invertebrate discards. This demonstrates significant wastage (finfish discards represent about 69% of the total catch weight) and potential for negative impact on biodiversity and other commercial fisheries. The information provided here addresses an important knowledge gap in the artisanal fisheries of Guyana. KEY WORDS: Chinese seine, catch rate, species composition, size frequencies, wastage INTRODUCTION The Guyanese artisanal fishery sector is an important is heavily dependent upon tidal flow (Shepherd et al. 1999, source of food, employment and export earnings for both Hackett et al. 2000). rural and urban communities (FAO 2005, Fisheries Depart- The vessels engaged in Chinese seine fishing are flat—bot- ment 2013). It comprises about 1,200 vessels, over 5,000 tom dories powered by a small outboard engine, paddle, or fishers, and 1,000 boat owners with most being members of sail. Each vessel is licensed to fish at one or more ‘pens’ and cooperative societies that acquire and sell fishing rights to operate between 1—10 seines fished during a tidal exchange their members (Maison 2007). The artisanal fishery, which (between 6—12 h per day), with some fishers using both tides continues to