Age Estimation of Billfishes (Kajikia Spp.) Using Fin Spine Cross-Sections: the Need for an International Code of Practice
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On the Biology of Florida East Coast Atlantic Sailfisht' Íe (Istiophorus Platypterus)1
SJf..... z e e w e t e k r " - Ka,; ,y, -, V öi'*DzBZöm 8429 =*==,_ r^ä r.-,-. On the Biology of Florida East Coast Atlantic SailfishT' íe (Istiophorus platypterus)1 JOHN W. JOLLEY, JR .2 149299 ABSTRACT The sailfish, Istiophorus platypterus, is one of the most important species in southeast Florida’s marine sport fishery. Recently, the concern of Palm Beach anglers about apparent declines in numbers of sailfish caught annually prompted the Florida Department of Natural Resources Marine Research Laboratory to investigate the biological status of Florida’s east coast sailfish populations. Fresh specimens from local sport catches were examined monthly during May 1970 through September 1971. Monthly plankton and “ night-light” collections of larval and juvenile stages were also obtained. Attempts are being made to estimate sailfish age using concentric rings in dorsal fin spines. If successful, growth rates will be determined for each sex and age of initial maturity described. Females were found to be consistently larger than males and more numerous during winter. A significant difference in length-weight relationship was also noted between sexes. Fecundity estimates varied from 0.8 to 1.6 million “ ripe” ova, indicating that previous estimates (2.5 to 4.7 million ova) were probably high. Larval istiophorids collected from April through October coincided with the prominence of “ ripe” females in the sport catch. Microscopic examination of ovarian tissue and inspection of “ ripe” ovaries suggest multiple spawning. Florida’s marine sport fishery has been valued as a in 1948 at the request of the Florida Board of Con $200 million business (de Sylva, 1969). -
The 2016 SWFSC Billfish Newsletter
The SouthwestSWFSC Fisheries 2016 Billfish Science Newsletter Center’s 2016 Billfish Newsletter Global Tagging Map El Niño fishing conditions Catch-Photo-Release mobile phone application IGFA Great Marlin Race and satellite tagging 1 Top Anglers and Captains of 2015 SWFSC 2016 Billfish Newsletter Table of Contents Special Foreword …………………………………………………………….. 3 An Inside Look ……………………………………………………………..… 4 Prologue …………………………………………………………………….… 5 Introduction ……………………………………………………………..….… 5 The International Billfish Angler Survey ………………………………....... 7 Pacific blue marlin 9 Striped marlin 10 Indo-Pacific sailfish 11 Black marlin 13 Shortbill spearfish 13 Broadbill swordfish 14 The Billfish Tagging Program ……………………………………………..... 14 The Hawaiian Islands 16 2015 Tagging-at-a-Glance Map 17 Baja California and Guerrero, Mexico 18 Southern California 18 Western Pacific 18 Top Anglers and Captains Acknowledgements ……………………………. 19 Top Tagging Anglers 19 Top Tagging Captains 21 Tag Recoveries ……………………………………………………………….. 21 Science in Action: “The IGFA Great Marlin Race and Marlin Tagging” 23 Acknowledgements ………………………………………………………....... 25 Angler Photos ……………………………………………………………..….. 26 Congratulations to Captain Teddy Hoogs of the Bwana for winning this year’s cover photo contest! Teddy photographed this spectacular marlin off the coast of Hawaii. Fish on! 2 Special Forward James Wraith, director of the SWFSC Cooperative Billfish Tagging Program since 2007, recently left the SWFSC to move back to Australia. James was an integral part of the Highly Migratory Species (HMS) program. In addition to day-to-day work, James planned and organized the research cruises for HMS at the SWFSC and was involved in tagging thresher, blue, and mako sharks in the Southern California Bight for many years. We are sad to see him go but are excited for his future opportunities and thankful for his many contributions to the program over the last 10 years. -
Striped Marlin (Kajikia Audax)
I & I NSW WILD FISHERIES RESEARCH PROGRAM Striped Marlin (Kajikia audax) EXPLOITATION STATUS UNDEFINED Status is yet to be determined but will be consistent with the assessment of the south-west Pacific stock by the Scientific Committee of the Central and Western Pacific Fisheries Commission. SCIENTIFIC NAME STANDARD NAME COMMENT Kajikia audax striped marlin Previously known as Tetrapturus audax. Kajikia audax Image © I & I NSW Background lengths greater than 250cm (lower jaw-to-fork Striped marlin (Kajikia audax) is a highly length) and can attain a maximum weight of migratory pelagic species distributed about 240 kg. Females mature between 1.5 and throughout warm-temperate to tropical 2.5 years of age whilst males mature between waters of the Indian and Pacific Oceans.T he 1 and 2 years of age. Striped marlin are stock structure of striped marlin is uncertain multiple batch spawners with females shedding although there are thought to be separate eggs every 1-2 days over 4-41 events per stocks in the south-west, north-west, east and spawning season. An average sized female of south-central regions of the Pacific Ocean, as about 100 kg is able to produce up to about indicated by genetic research, tagging studies 120 million eggs annually. and the locations of identified spawning Striped marlin spend most of their time in grounds. The south-west Pacific Ocean (SWPO) surface waters above the thermocline, making stock of striped marlin spawn predominately them vulnerable to surface fisheries.T hey are during November and December each year caught mostly by commercial longline and in waters warmer than 24°C between 15-30°S recreational fisheries throughout their range. -
Fao Species Catalogue
FAO Fisheries Synopsis No. 125, Volume 5 FIR/S125 Vol. 5 FAO SPECIES CATALOGUE VOL. 5. BILLFISHES OF THE WORLD AN ANNOTATED AND ILLUSTRATED CATALOGUE OF MARLINS, SAILFISHES, SPEARFISHES AND SWORDFISHES KNOWN TO DATE UNITED NATIONS DEVELOPMENT PROGRAMME FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS FAO Fisheries Synopsis No. 125, Volume 5 FIR/S125 Vol.5 FAO SPECIES CATALOGUE VOL. 5 BILLFISHES OF THE WORLD An Annotated and Illustrated Catalogue of Marlins, Sailfishes, Spearfishes and Swordfishes Known to date MarIins, prepared by Izumi Nakamura Fisheries Research Station Kyoto University Maizuru Kyoto 625, Japan Prepared with the support from the United Nations Development Programme (UNDP) UNITED NATIONS DEVELOPMENT PROGRAMME FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome 1985 The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory. city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. M-42 ISBN 92-5-102232-1 All rights reserved . No part of this publicatlon may be reproduced. stored in a retriewal system, or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwase, wthout the prior permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction should be addressed to the Director, Publications Division, Food and Agriculture Organization of the United Nations Via delle Terme di Caracalla, 00100 Rome, Italy. -
Status of Billfish Resources and the Billfish Fisheries in the Western
SLC/FIAF/C1127 (En) FAO Fisheries and Aquaculture Circular ISSN 2070-6065 STATUS OF BILLFISH RESOURCES AND BILLFISH FISHERIES IN THE WESTERN CENTRAL ATLANTIC Source: ICCAT (2015) FAO Fisheries and Aquaculture Circular No. 1127 SLC/FIAF/C1127 (En) STATUS OF BILLFISH RESOURCES AND BILLFISH FISHERIES IN THE WESTERN CENTRAL ATLANTIC by Nelson Ehrhardt and Mark Fitchett School of Marine and Atmospheric Science, University of Miami Miami, United States of America FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Bridgetown, Barbados, 2016 The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The mention of specific companies or products of manufacturers, whether or not these have been patented, does not imply that these have been endorsed or recommended by FAO in preference to others of a similar nature that are not mentioned. The views expressed in this information product are those of the author(s) and do not necessarily reflect the views or policies of FAO. ISBN 978-92-5-109436-5 © FAO, 2016 FAO encourages the use, reproduction and dissemination of material in this information product. Except where otherwise indicated, material may be copied, downloaded and printed for private study, research and teaching purposes, or for use in non-commercial products or services, provided that appropriate DFNQRZOHGJHPHQWRI)$2DVWKHVRXUFHDQGFRS\ULJKWKROGHULVJLYHQDQGWKDW)$2¶VHQGRUVHPHQWRI XVHUV¶YLHZVSURGXFWVRUVHUYLFHVLVQRWLPSOLHGLQDQ\ZD\ All requests for translation and adaptation rights, and for resale and other commercial use rights should be made via www.fao.org/contact-us/licence-request or addressed to [email protected]. -
IATTC-94-01 the Tuna Fishery, Stocks, and Ecosystem in the Eastern
INTER-AMERICAN TROPICAL TUNA COMMISSION 94TH MEETING Bilbao, Spain 22-26 July 2019 DOCUMENT IATTC-94-01 REPORT ON THE TUNA FISHERY, STOCKS, AND ECOSYSTEM IN THE EASTERN PACIFIC OCEAN IN 2018 A. The fishery for tunas and billfishes in the eastern Pacific Ocean ....................................................... 3 B. Yellowfin tuna ................................................................................................................................... 50 C. Skipjack tuna ..................................................................................................................................... 58 D. Bigeye tuna ........................................................................................................................................ 64 E. Pacific bluefin tuna ............................................................................................................................ 72 F. Albacore tuna .................................................................................................................................... 76 G. Swordfish ........................................................................................................................................... 82 H. Blue marlin ........................................................................................................................................ 85 I. Striped marlin .................................................................................................................................... 86 J. Sailfish -
63Rd Annual Labor Day White Marlin Tournament
Information THE OCEAN CITY MARLIN CLUB would like to extend a special thanks to our great sponsors. 63rd Annual Labor Day REGISTRATION White Marlin Level Sponsors: White Marlin Tournament Thursday, September 2 @ 6:30-8:00 p.m. Decatur Diner Ocean City Fishing Center Delaware Elevator Sunset Marina In-Person Captain’s Meeting 7:30 p.m. or Virtual Captain’s D.W. Burt Concrete Construction, Inc. SEPTEMBER 3, 4 & 5 2021 Meeting available on our website and Facebook. Over the You do not need to be phone registration available M-F 10:30-5:30 p.m. Blue Marlin Level Sponsors: a member of The Marlin Club to fish this tournament. 410-213-1613. A representative from each boat must Atlantic General Hospital Henley Construction Co. Inc. watch/attend the Captain’s Meeting. Bahia Marina Intrinsic Yacht & Ship Carey Distributors Ocean City Golf Club Open Bar - Beer & Wine Only & donated Appetizers by Consolidated Commercial Services PYY Marine Decatur Diner until 8:00 p.m. (while supplies last) DBS, Inc. Red Sun Custom Apparel Delmarvalous Photos Rt113 Boat Sales Fish in OC Ruth’s Chris Steak House AWARDS BANQUET September 5, 6:30-9:00 p.m. at the Club Billfish Level Sponsors: Awards Presentation: 8:00 p.m. Billfish Gear Ocean Downs Casino Four Tickets included with entry fee. Bluewater Yacht Sales PKS & Company, P.A. C & R Electrics, Inc. Premier Flooring Installation 1, Inc. C.J. Miller LLC Racetrack Auto & Marine FISHING DAYS Casual Designs Furniture SeaBoard Media Inc. (2 of 3) September 3, 4 & 5 Creative Concepts Steen Homes Lines In 8:00 a.m. -
Updated Us Conventional Tagging Database For
SCRS/2009/047 Collect. Vol. Sci. Pap. ICCAT, 65(5): 1692-1700 (2010) UPDATED U.S. CONVENTIONAL TAGGING DATABASE FOR ATLANTIC SAILFISH (1955-2008), WITH COMMENTS ON POTENTIAL STOCK STRUCTURE Eric S. Orbesen, Derke Snodgrass, John P. Hoolihan, and Eric D. Prince1 SUMMARY The U.S. conventional tagging data base for Atlantic sailfish (1955-2008), Istiophorus platypterus, consists of data from the NOAA Southeast Fishery Science Center’s Cooperative Tagging Center (CTC) and The Billfish Foundation (TBF). We examined the patterns of sailfish tag release and recapture results in the Atlantic Ocean using a composite analysis from both agencies. In addition, we discuss tagging results and other data that might provide insight into Atlantic sailfish stock structure. RÉSUMÉ La base de données de marquage conventionnel des Etats-Unis pour les voiliers de l’Atlantique (Istiophorus platypterus) (1955-2008) est constituée de données provenant du Cooperative Tagging Center (CTC) du Southeast Fishery Science Center de la NOAA et du The Billfish Foundation (TBF). Nous avons examiné les modes des résultats d'apposition des marques sur les voiliers et de leur récupération dans l’océan Atlantique à l’aide d’une analyse composite émanant des deux agences. En outre, nous discutons des résultats de marquage et d’autres données susceptibles de nous éclairer sur la structure du stock de voiliers de l’Atlantique. RESUMEN La base de datos de marcado convencional estadounidense para el pez vela del Atlántico (1955-2008), Istiophorus platypterus, contiene datos del Cooperative Tagging Center (CTC) del Southeast Fishery Science Center de la NOAA y de The Billfish Foundation (TBF). -
Frequently Asked Questions
atlaFrequentlyntic white Asked mQuestionsarlin 2007 Status Review WHAT ARE ATLANTIC WHITE MARLIN? White marlin are billfish of the Family Istiophoridae, which includes striped, blue, and black marlin; several species of spearfish; and sailfish. White marlin inhabit the tropical and temperate waters of the Atlantic Ocean and adjacent seas. They generally eat other fish (e.g., jacks, mackerels, mahi-mahi), but will feed on squid and other prey items. White marlin grow quickly and can reach an age of at least 18 years, based on tag recapture data (SCRS, 2004). Adult white marlin can grow to over 9 feet (2.8 meters) and can weigh up to 184 lb (82 kg). WHY ARE ATLANTIC WHITE MARLIN IMPORTANT? Atlantic white marlin are apex predators that feed at the top of the food chain. Recreational fishers seek Atlantic blue marlin, white marlin, and sailfish as highly-prized species in the United States, Venezuela, Bahamas, Brazil, and many countries in the Caribbean Sea and west coast of Africa. White marlin, along with other billfish and tunas, are managed internationally by member nations of the International Commission for the Conservation of Atlantic Tunas (ICCAT). In the United States, Atlantic blue marlin, white marlin, and Atlantic sailfish can be landed only by recreational fishermen fishing from either private vessels or charterboats. WHAT IS A STATUS REVIEW? A status review is the process of evaluating the best available scientific and commercial information on the biological status of a species and the threats it is facing to support a decision whether or not to list a species under the ESA or to change its listing. -
And Black Marlin (Istiompax Indica) in the Eastern Pacific Ceo an Nima Farchadi University of San Diego
University of San Diego Digital USD Theses Theses and Dissertations Fall 9-26-2018 Habitat Preferences of Blue Marlin (Makaira nigricans) and Black Marlin (Istiompax indica) in the Eastern Pacific ceO an Nima Farchadi University of San Diego Michael G. Hinton Inter-American Tropical Tuna Commission Andrew R. Thompson Southwest Fisheries Science Center Zhi-Yong Yin University of San Diego Follow this and additional works at: https://digital.sandiego.edu/theses Part of the Applied Statistics Commons, Oceanography Commons, Population Biology Commons, Statistical Models Commons, and the Terrestrial and Aquatic Ecology Commons Digital USD Citation Farchadi, Nima; Hinton, Michael G.; Thompson, Andrew R.; and Yin, Zhi-Yong, "Habitat Preferences of Blue Marlin (Makaira nigricans) and Black Marlin (Istiompax indica) in the Eastern Pacific cO ean" (2018). Theses. 32. https://digital.sandiego.edu/theses/32 This Thesis is brought to you for free and open access by the Theses and Dissertations at Digital USD. It has been accepted for inclusion in Theses by an authorized administrator of Digital USD. For more information, please contact [email protected]. UNIVERSITY OF SAN DIEGO San Diego Habitat Preferences of Blue Marlin (Makaira nigricans) and Black Marlin (Istiompax indica) in the Eastern Pacific Ocean A thesis submitted in partial satisfaction of the requirements for the degree of Master of Science in Marine Science by Nima Jason Farchadi Thesis Committee Michael G. Hinton, Ph.D., Chair Andrew R. Thompson, Ph.D. Zhi-Yong Yin, Ph.D. 2018 The thesis of Nima Jason Farchadi is approved by: ___________________________________ Michael G. Hinton, Ph.D., Chair Inter-American Tropical Tuna Commission ___________________________________ Andrew R. -
Analysis of Big Game Fishing Catches of Blue Marlin (Makaira Nigricans) in the Madeira Archipelago (Eastern Atlantic) and Factors That Affect Its Presence
sustainability Article Analysis of Big Game Fishing Catches of Blue Marlin (Makaira nigricans) in the Madeira Archipelago (Eastern Atlantic) and Factors that Affect Its Presence Roi Martinez-Escauriaza 1,* , Pablo Pita 2,3, Maria Lídia Ferreira de Gouveia 4, Nuno Manuel Abreu Gouveia 5, Eduardo Teixeira 6, Mafalda de Freitas 1,4,7,8 and Margarida Hermida 1,8 1 Oceanic Observatory of Madeira, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), Edifício Madeira Tecnopolo, 9020-105 Funchal, Portugal; [email protected] 2 Campus Do Mar, International Campus of Excellence, 15782 Santiago de Compostela, Spain; [email protected] 3 Faculty of Political and Social Sciences, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain 4 Direção Regional do Mar, Direção de Serviços de Monitorização, Estudos e Investigação do Mar (DRM/DSEIMar), 9004-562 Funchal, Portugal; [email protected] 5 Direção Regional de Pescas, Direção de Serviços de Inspeção e Controlo, Edifício da Sociedade Metropolitana de Câmara de Lobos, 9300-138 Câmara de Lobos, Portugal; [email protected] 6 Big Game Club of Portugal in Madeira, 9000-171 Funchal, Portugal; [email protected] 7 Estação de Biologia Marinha do Funchal, Cais do Carvão, 9000-003 Funchal, Portugal 8 MARE–Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), Edifício Madeira Tecnopolo, 9020-105 Funchal, Portugal; Citation: Martinez-Escauriaza, R.; [email protected] Pita, P.; de Gouveia, M.L.F.; Gouveia, * Correspondence: [email protected] N.M.A.; Teixeira, E.; de Freitas, M.; Hermida, M. -
Age and Growth of Striped Marlin (Kajikia Audax) in Waters Off Taiwan
ISC/11/BILLWG-1/09 Age and growth of striped marlin (Kajikia audax) in waters off Taiwan Chi-Lu Sun Wen-Sheng Hsu Yi-Jay Chang Su-Zan Yeh Nan-Jay Su National Taiwan University Institute of Oceanography 1, Sect. 4, Roosevelt Road, Taipei, Taiwan 106 Wei-Chuan Chiang Eastern Marine Biology Research Center of Fisheries Research Institute Council of Agriculture, Executive Yuan, Taitung, Taiwan ____________ Working document submitted to the ISC Billfish Working Group Workshop, 19-27 January 2011, Honolulu, Hawaii, USA. Document not to be cited without author’s written permission. Age and growth of striped marlin (Kajikia audax) in waters off Taiwan* Chi-Lu Sun1, Wen-Sheng Hsu1, Nan-Jay Su1, Su-Zan Yeh1, Yi-Jay Chang1, and Wei-Chuan Chiang2 1 Institute of Oceanography, National Taiwan University, Taipei, Taiwan 2 Eastern Marine Biology Research Center of Fisheries Research Institute, Taitung, Taiwan Abstract Age and growth of striped marlin in waters off Taiwan were examined from counts of growth rings on cross sections of the fourth spine of the first dorsal fin. Length and weight data and the dorsal fin spines were collected monthly at the three major fishing ports (Tungkang, Shinkang, and Nanfangao) in Taiwan. In total, 1,037 length and weight samples of striped marlin were collected from November 2004 to April 2010. The length-weight (EFL-W) relationship were combined between the sexes (W = 4.68 × 10-6 EFL3.16) because of no significant difference (P > 0.05). There were 241 (of 291, 83%) and 206 (of 226, 91%) spines aged successfully for males and females respectively.