Trophic Relationships Between Predators Caught
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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 -
Among the World's Most Popular Game Fishes, Tunas Are Also
ÜBER-FISH Among the World’s Most Popular Game Fishes, Tunas Are Also Some of the Most Highly Evolved and Sophisticated of All the Ocean’s Predators BY DOUG OLANDER DANIEL GOEZ DANIEL 74 DECEMBER 2017 SPORTFISHINGMAG.COM 75 The Family Tree minimizes drag with a very low reduce the turbulence in the Tunas are part of the family drag coefficient,” optimizing effi- water ahead of the tail. Scombridae, which also includes cient swimming both at cruise Unlike most fishes with broad, mackerels, large and small. But and burst. While most fishes bend flexible tails that bend to scoop there are tunas, and then there their bodies side to side when water to move a fish forward, are, well, “true tunas.” moving forward, tunas’ bodies tunas derive tremendous That is, two groups don’t bend. They’re essentially thrust with thin, hard, lunate WHILE MOST FISHES BEND ( sometimes known as “tribes”) rigid, solid torpedoes. ( crescent-moon-shaped) tails dominate the tuna clan. One is And these torpedoes are that beat constantly, capable of THEIR BODIES SIDE TO SIDE Thunnini, which is the group perfectly streamlined, their 10 to 12 or more beats per second. considered true tunas, charac- larger fins fitting perfectly into That relentless thrust accounts WHEN MOVING FORWARD, terized by two separate dorsal grooves so no part of these fins for the unstoppable runs that fins and a relatively thick body. a number of highly specialized protrudes above the body surface. tuna make repeatedly when TUNAS’ BODIES DON’T BEND. The 15 species of Thunnini are features facilitate these They lack the convex eyes of hooked. -
Descriptions of Euthynnus and Auxis Larvae from the Pacific and Atlantic Oceans and Adjacent Seas
library THE GARLSBERG FOUNDATION’S OCEANOGRAPHIGAL EXPEDITION ROUND THE WORLD 1928—30 AND PREVIOUS “DANA”-EXPEDITIONS UNDER THE LEADERSHIP OF THE LATE PROFESSOR JOHANNES SCHMIDT DANA-BEPOBT No. 50. DESCRIPTIONS OF EUTHYNNUS AND AUXIS LARVAE FROM THE PACIFIC AND ATLANTIC OCEANS AND ADJACENT SEAS BY WALTER M. MATSUMOTO U.S. FISH AND WILDLIFE SERVICE WITH 31 FIGURES IN THE TEXT PUBLISHED BY THE CARLSBERG FOUNDATION THIS PAPER MAY BE EEFEEBED TO AS: •DANA-REPOKT No. 50, 1959« COPENHAGEN ANDR. FRED. H0ST A S 0 N PRINTED BY BIANCO LUNO A/S CONTENTS Page Introduction ...................................................................... 3 Descriptions of larvae and postlarvae................. 21 Methods.............................................................................. 4 Auxis type I ......................................................... 21 Genus E uthynnus.............................................................. 5 Auxis type I I ....................................................... 2:i Notes on adults and juveniles ............................. 5 Discussion of species dilTerences........................... 25 Descriptions of larvae and postlarvae................. 7 Geographical distribution of Euthynnus and Auxis Euthynnus tineatus.............................................. 7 larvae............................................................................ 25 Euthynnus alletteratus.......................................... 11 Spawning areas as indicated by larval catches___ 27 Euthynnus ijaito .................................................. -
Fish Forensics: Two Strategies for Fish Identification
430 Nahant Rd., Nahant, MA, USA 01908 | 781-581-7370 ext. 343 | [email protected] | www.northeastern.edu/ogl Fish Forensics: two strategies for fish identification Purpose: The purpose of this activity is to learn about two different strategies for identifying fish. One is using a dichotomous key based on physical characteristics and the second is DNA barcoding. We typically present this activity as a 10- to 15-minute exercise, but it can be easily modified to discuss the process of DNA barcoding more in depth, or to even perform these laboratory protocols. Please feel free to reach out to Ocean Genome Legacy if you have any questions or would like guidance about completing any protocols in a laboratory. Part 1: Why is it important to be identify fish? 1. Have each student, or pair of students, chose a fish. We often have students pretend they are ‘fishing’ when they select their fish. a. Fish images are in the “Fish” folder. 2. Discuss why it is important to know the identity of this fish. a. fisheries management b. food safety c. conservation d. others? Part 2: Learning to use a dichotomous key 1. One way to identify an organism is to use morphological features. Using the flow chart, answer each of the questions based on the image with which the student is working. a. Flow chart is DichotomousKeyFlow_10.11.17.pptx in the “Dichotomous Key” folder. b. The key is alternately displayed as a traditional dichotomous key with a series of questions. It can be found in the same folder. -
SAC-10-03 EN the Tuna Fishery in the EPO in 2018
INTER-AMERICAN TROPICAL TUNA COMMISSION SCIENTIFIC ADVISORY COMMITTEE 11TH MEETING San Diego, California (USA) 11-15 May 20201 DOCUMENT SAC-11-03 THE TUNA FISHERY IN THE EASTERN PACIFIC OCEAN IN 2019 INTRODUCTION .............................................................................................................................................. 3 1. Catches and landings of tunas, billfishes, and associated species ...................................................... 3 2. Catches by species .............................................................................................................................. 4 3. Catches and fishing effort ................................................................................................................... 6 4. Distributions of the catches of tropical tunas ..................................................................................... 7 5. Size compositions of the catches of tunas .......................................................................................... 8 6. The fleets ............................................................................................................................................. 9 This report provides a summary of the catches and effort in 2019 of the fishery for tunas in the eastern Pacific Ocean (EPO), for whose management the Inter-American Tropical Tuna Commission (IATTC) is responsible. It is based on data available to the IATTC staff in March 2020; therefore, some of the data for 2019 are incomplete, and all data -
SAC-10-03 EN the Tuna Fishery in the EPO in 2018
SCIENTIFIC COMMITTEE SIXTEENTH REGULAR SESSION ELECTRONIC MEETING 11-20 August 2020 The Tuna Fishery in the Eastern Pacific Ocean in 2019 WCPFC-SC16-2020/GN-IP-02 IATTC1 1 Inter-American Tropical Tuna Commission INTER-AMERICAN TROPICAL TUNA COMMISSION SCIENTIFIC ADVISORY COMMITTEE 11TH MEETING La Jolla, California (USA) 11-15 May 20201 DOCUMENT SAC-11-03 THE TUNA FISHERY IN THE EASTERN PACIFIC OCEAN IN 2019 INTRODUCTION .............................................................................................................................................. 3 1. Catches and landings of tunas, billfishes, and associated species ...................................................... 3 2. Catches by species .............................................................................................................................. 4 3. Catches and fishing effort ................................................................................................................... 6 4. Distributions of the catches of tropical tunas ..................................................................................... 7 5. Size compositions of the catches of tunas .......................................................................................... 8 6. The fleets ............................................................................................................................................. 9 This report provides a summary of the catches and effort in 2019 of the fishery for tunas in the eastern Pacific Ocean (EPO), for whose -
FAO Fisheries & Aquaculture
Food and Agriculture Organization of the United Nations Fisheries and for a world without hunger Aquaculture Department Biological characteristics of tuna Tuna and tuna-like species are very important economically and a significant Related topics source of food, with the so-called principal market tuna species - skipjack, yellowfin, bigeye, albacore, Atlantic bluefin, Pacific bluefin (those two species Tuna resources previously considered belonging to the same species referred as northern bluefin) Tuna fisheries and and southern bluefin tuna - being the most significant in terms of catch weight and utilization trade. These pages are a collection of Fact Sheets providing detailed information on tuna and tuna-like species. Related information FAO FishFinder Aquatic Species - fact Table of Contents sheets Taxonomy and classification Related activities Morphological characteristics FAO activities on tuna Geographical distribution Habitat and biology Trophic relations and growth Reproduction Bibliography Taxonomy and classification [ Family: Scombridae ] : Scombrids [ Family: Istiophoridae Family: Xiphiidae ] : Billfishes Upper systematics of tunas and tuna-like species Scombrids and billfishes belong to the suborder of the Scombroidei which position is shown below: Phylum : Chordata └─ Subphylum Vertebrata └─ Superclass Gnathostomata └─ Class Osteichthyes └─ Subclass Actinopterygii └─ Infraclass Teleostei └─ Superorder Acanthopterygii └─ Order Perciformes ├─ Suborder Scombroidei | └─ Family Scombridae └─ Suborder Xiphioidei FAO Fisheries -
The Italian Annotated Bibliography on Albacore (Thunnus Alalunga, Bonnaterre, 1788)
SCRS/2019/156 Collect. Vol. Sci. Pap. ICCAT, 76(8): 7-39 (2020) THE ITALIAN ANNOTATED BIBLIOGRAPHY ON ALBACORE (THUNNUS ALALUNGA, BONNATERRE, 1788) F. Garibaldi1, P. Addis2, A. Di Natale3, C. Piccinetti4, F. Tinti5 SUMMARY The Italian scientists have a long tradition of studies and research on albacore (Thunnus alalunga). This species is one of the most important for the Italian fishery since many centuries, even if it was often neglected. This is the first attempt to list together the many papers published so far by Italian scientists, concerning the biology of this species, the fisheries and many other scientific and cultural issues. The aim of this paper is to provide a sort of annotated bibliography, with specific key words, even if it is surely incomplete, because of the many papers published over the years. So far, we found 164 papers on albacore. This updated bibliography was set together to serve the scientists and to help them in finding some rare references that might be useful for their work. RÉSUMÉ Les scientifiques italiens ont une longue tradition d'études et de recherches sur le germon (Thunnus alalunga). Cette espèce est l'une des plus importantes pour la pêche italienne depuis de nombreux siècles, même si elle a été souvent négligée. Il s'agit de la première tentative de répertorier les nombreux articles publiés à ce jour par des scientifiques italiens concernant la biologie de cette espèce, les pêcheries et de nombreuses autres questions scientifiques et culturelles. Le but de ce document est de fournir une sorte de bibliographie annotée, avec des mots clés spécifiques, même si elle est sûrement incomplète, en raison des nombreux articles publiés au cours des années. -
Bibliography on Tunas-Layout.Pmd
C M Y K CMFRI Special Publication Number: 92 ISSN: 0972-2351 Bibliography on Tunas N.G.K. Pillai and Jyothi V. Mallia CENTRAL MARINE FISHERIES RESEARCH INSTITUTE (Indian Council of Agricultural Research) P.B.No. 1603, Kochi - 682 018, India Bibliography on Tunas N. G. K. Pillai and Jyothi V. Mallia Published by Prof. (Dr.) Mohan Joseph Modayil Director Central Marine Fisheries Research Institute, Kochi - 682 018 Citation: Pillai, N.G.K. and Jyothi V. Mallia 2007. Bibliography on Tunas, CMFRI Spl. Publ. No., 92: 325pp. © 2007, Central Marine Fisheries Research Institute, Kochi ISSN: 0972-2351 Printed at Niseema Printer and Publishers Kochi - 18 CONTENTS Foreword i Preface iii Acronyms v 1. Field identification of tunas from Indian seas 1 2. Trends in world tuna fishery 9 3. Status of tuna fishery in India 23 4. Abbreviations of technical journals 31 5. Bibliography 5.1. Biology 43 5.2. Fisheries 75 5.3. Baitfishes 111 5.4. Physiology, genetics and breeding 118 5.5 Stock assessment 165 5.6 Harvest and post-harvest 200 5.7 Tagging 214 5.8 Conservation and management 244 Web sites related to tuna 254 Subject index 256 Author index 261 Phone (off) : 2394867/...Ext. 2391407 Telegram : CADALMIN EKM Telex : 0885-6435 MFRI IN Fax : 0484-394909 E-mail : [email protected] EäòxpùÒªÉ ºÉ¨ÉÖpùÒ ¨ÉÉÎiºªÉEòÒ +xÉÖºÉÆvÉÉxÉ ºÉƺlÉÉxÉ (¦ÉÉ®úiÉÒªÉ EÞòÊ¹É +xÉÖºÉÆvÉÉxÉ {ÉÊ®ú¹Énù) {ÉÉäº]õ ¤ÉÉìCºÉ ºÉÆ 1603, B®úhÉÉEÖò±É¨É, EòÉäSÉÒxÉ-682 018 CENTRAL MARINE FISHERIES RESEARCH INSTITUTE (Indian Council of Agricultural Research) P.B.No. 1603, Cochin – 682 018, India FOREWORD Tunas are highly valued food fishes targeted by coastal fishers as well as distant water fishing nations. -
Age and Growth Rate of Juvenile Bluefin Tuna Thunnus Thynnus from the Mediterranean Sea (Sicily, Italy)*
sm69n2241 22/5/05 19:40 Página 241 SCI. MAR., 69 (2): 241-249 SCIENTIA MARINA 2005 Age and growth rate of juvenile bluefin tuna Thunnus thynnus from the Mediterranean Sea (Sicily, Italy)* MARIO LA MESA1, MAURO SINOPOLI 2 and FRANCO ANDALORO 2 1 CNR, Istituto di Scienze Marine (ISMAR), Sezione Pesca Marittima di Ancona, Largo Fiera della Pesca, 60125 Ancona, Italy. E-mail: [email protected] 2 ICRAM - Istituto Centrale per la Ricerca scientifica e tecnologica Applicata al Mare, STS Palermo, via Emerico Amari 124, 90139, Palermo, Italy. SUMMARY: The microstructural analysis of the sagittal otoliths of juvenile Atlantic bluefin tuna, Thunnus thynnus, can be used to estimate the age and growth rate of young-of-the-year individuals born in the Mediterranean. Samples of juvenile bluefin tuna, obtained as by-catch of the local small-scale pelagic fishery for Atlantic bonito and dolphinfish, were collect- ed off the northern coast of Sicily between late August and early November 2002. Otolith age readings were carried out on 56 specimens ranging between 195 and 400 mm fork length and between 112 and 1266 g total weight. Based on microin- crement analysis along a counting path from the otolith core to the antirostrum, juvenile fishes were found to be between 77 days and 153 days old. The estimated growth rate was practically linear over the whole size range, accounting for about 2.0- 2.37 mm/day. Derived from the length-weight relationship and the estimated length-at-age data, the mean weight-at-age was 168, 429 and 813 g for 2, 3 and 4 month-old juveniles respectively. -
Tunas, Billfishes and Other Pelagic Species in the Eastern Pacific Ocean in 2016
TUNAS, BILLFISHES AND OTHER PELAGIC SPECIES IN THE EASTERN PACIFIC OCEAN IN 2016 A. The fishery for tunas and billfishes in the eastern Pacific Ocean ....................................................... 3 B. Yellowfin tuna ................................................................................................................................... 65 C. Skipjack tuna ..................................................................................................................................... 76 D. Bigeye tuna........................................................................................................................................ 79 E. Pacific bluefin tuna ........................................................................................................................... 90 F. Albacore tuna .................................................................................................................................... 97 G. Swordfish ........................................................................................................................................ 106 H. Blue marlin ...................................................................................................................................... 110 I. Striped marlin .................................................................................................................................. 112 J. Sailfish ........................................................................................................................................... -
Family: Scombridae; Tribe: Thunnini) Early Life Stages in the Oceanic Gulf of Mexico Nina Pruzinsky Nova Southeastern University, [email protected]
Nova Southeastern University NSUWorks HCNSO Student Theses and Dissertations HCNSO Student Work 5-2-2018 Identification and spatiotemporal dynamics of tuna (Family: Scombridae; Tribe: Thunnini) early life stages in the oceanic Gulf of Mexico Nina Pruzinsky Nova Southeastern University, [email protected] Follow this and additional works at: https://nsuworks.nova.edu/occ_stuetd Part of the Marine Biology Commons, and the Oceanography and Atmospheric Sciences and Meteorology Commons Share Feedback About This Item NSUWorks Citation Nina Pruzinsky. 2018. Identification and spatiotemporal dynamics of tuna (Family: Scombridae; Tribe: Thunnini) early life stages in the oceanic Gulf of Mexico. Master's thesis. Nova Southeastern University. Retrieved from NSUWorks, . (472) https://nsuworks.nova.edu/occ_stuetd/472. This Thesis is brought to you by the HCNSO Student Work at NSUWorks. It has been accepted for inclusion in HCNSO Student Theses and Dissertations by an authorized administrator of NSUWorks. For more information, please contact [email protected]. Thesis of Nina Pruzinsky Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science M.S. Marine Biology Nova Southeastern University Halmos College of Natural Sciences and Oceanography May 2018 Approved: Thesis Committee Major Professor: Tracey Sutton Committee Member: David Kerstetter Committee Member: Jay Rooker This thesis is available at NSUWorks: https://nsuworks.nova.edu/occ_stuetd/472 HALMOS COLLEGE OF NATURAL SCIENCES AND OCEANOGRAPHY IDENTIFICATION AND SPATIOTEMPORAL DYNAMICS OF TUNA (FAMILY: SCOMBRIDAE; TRIBE: THUNNINI) EARLY LIFE STAGES IN THE OCEANIC GULF OF MEXICO By Nina M. Pruzinsky Submitted to the Faculty of Halmos College of Natural Sciences and Oceanography in partial fulfillment of the requirements for the degree of Master of Science with a specialty in: Marine Biology Nova Southeastern University May 2, 2018 Thesis of Nina M.