Unesco technical papers in marine science 20 I o c Archive copy ^ SEP. *975 Ichthyoplankton Report of the CICAR Ichthyoplankton Workshop Unesco 1975 UNESCO TECHNICAL PAPERS IN MARINE SCIENCE Numbers 1 to 8, IO to 12,14 are out of stock. For full titles see inside back cover SCOR No. Year WG 9 Report on intercalibration measurements, Leningrad, 24-28 May 1966 and Copenhagen, September 1966; organized by ICES 1969 — 13 Technical report of sea trials conducted by the working group on photo­ synthetic radiant energy, Gulf of California, May 1968; sponsored by SCOR, IAPSO, Unesco 1969 WG 15 15 Monitoring life in the ocean; sponsored by SCOR, ACMRR, Unesco, IBP/PM 1973 WG29 16 Sixth report of the joint panel on oceanographic tables and standards, Kiel, 24-26 January 1973; sponsored by Unesco, ICES, SCOR, IAPSO 1974 WG IO 17 An intercomparison of some current meters,report on an experiment of Research Vessel Akademic Kurchatov, March-April 1970, by the working group on Current Velocity Measurements; sponsored by SCOR, IAPSO, Unesco 1974 WG 21 18 A review of methods used for quantitative phytoplankton studies; sponsored by SCOR, Unesco 1974 WG 33 19 Marine Science Teaching at the University Level. Report of the Unesco Workshop on University Curricula —Aiso published in French and Spanish 1974 — 20 Ichthyoplankton. Report of the CICAR Ichthyoplankton Workshop 1975 — 21 An intercomparison of open sea tidal pressure sensors. Report of SCOR working group 27 : “Tides of the opean sea” 1975 WG 27 Unesco technical papers in marine science 20 Ichthyoplankton Report of the CICAR Ichthyoplankton Workshop Mexico City, 17-26 July 1974 Cooperative Investigation of the Caribbean and Adjacent Regions lOC-Unesco Unesco 1975 The Scientific Workshopsof the Intergovernmental Oceanographic Commission are usually jointly sponsored with other intergovernmental or non­ governmental bodies. In each case, by mutual agreement , one of the sponsoring bodies assumes responsibility for publication of thé final report. Copies may be requested from the publishing bodies as listed below or from the Secretary, IOC, Unesco, Place de Fontenoy, 75700 Paris, Prance. No. Title Publishing Body Languages 1 CCOP-IOC, 1974» Metallogenesis, Hydro­ Office of the English carbons and Tectonic Patterns in Project Manager Eastern Asia Report of the IDOE UNDP/CCOP Workshop on7» Bangkok, Thailand, c/o ESCAP 24-29 September 1973. UNDP (CCOP), Sala Santitham 158 p. Bangkok 2, Thailand 2 CICAR Ichthyoplankton Workshop, Mexico Division of Marine English City, 16-27 July 1974. (Unesco Sciences, Unesco, Spanish Technical Paper in Marine Science, Place de Pontenoy No. 20) 75700 Paris, Prance 3 Report of the IOC/OFCM/lCSEM Inter­ IOC, Unesco, English national Workshop on Marine Pollution Place de Pontenoy French in the Mediterranean, Monte Carlo, 75700 Paris, Prance Spanish 9-14 September 1974. 4 Report of the Workshop on the PAO English Phenomenon known as "El Nino", 00100-Rome, Italy Spanish Guayaquil, Ecuador, 4-12 December 1974. 5 IDOE International Workshop on Marine IOC, Unesco English Geology and Geophysics of the Carib­ Place de Pontenoy Spanish bean Region and its Resources, 75700 Paris, Prance Kingston, Jamaica, 17-22 February 1975. - 2 - PREPAU This series, the Unesco Technical Papers in Marine Science, is produced by the Unesco Division of Marine Sciences as a means of informing the scientific community of recent developments in oceanographic research and marine science affairs. Many of the texts published within the series result from research activities of the Scientific Committee on Oceanic Research (SCOR) and are submitted to Unesco for printing following final approval by SCOR of the relevant working group report. Unesco Technical Papers in Marine Science are distributed free of charge to various institutions and governmental authorities. Requests for copies of individual titles or additions to the mailing list should be addressed, on letterhead stationery if possible, to: Division of Marine Sciences Unesco Place de Pontenoy 75700-Paris, Prance TABLE OP CONTENTS page 1. INTRODUCTION .............................................................................................................. 5 1.1 Historical Background................................ ......... ................ ..................... 5 1.2 Objectives of the Workshop.............................................. 5 1.3 Participants..................... 3 1.4 Programme ............................................................ 6 2. PROGRAMME..................................................................................................................... 7 3. SESSION REPORTS....................................................................................................... 9 3.1 Ichthyoplankton Sampling ........................................... 9 3.2 Mechanics of Handling Ichthyoplankton............................................. 11 3.3 Power Plant Entrainment .............................................. 12 3.4 Ancillary Information ................................................................. 14 3.5 Taxonomy Introductory Session....................................................... 14 3.6 Glupeid and Engraulid Taxonomy........... ................................................. 15 3.7 Î/Çyctophid, Gonostomatid, Sternoptychid Taxonomy.................... 18 3.8 Leptocephali Taxonomy............................. 19 3.9 Carangid Taxonomy ............................................................................................. 20 3.10 Scombrid, Xiphiid and Istiophorid Taxonomy .......................... 22 3.11 General Taxonomy Session ..................... 23 3.12 Taxonomy Summary Session and Co-operative Projects ...... 23 3.13 Application of Ichthyoplankton Studies to Fishery Management .................................... 25 4. SUMMARY REMARKS AND RECOMMENDATIONS...................................................... 28 5. ANNEXES.......................................................................................................................... 31 5*1 List of Participants ...................................................................................... 31 5.2 Abstracts of Papers Contributed ........................................................... 35 5.3 List of Families of Marine Teleosts whose Larval Stages Occur in the CICAR Area......................................... 39 5.4 List of Technical Documents Distributed to Participants . 41 5.5 List of Selected Bibliographic References Distributed to Participants .................................................................................................. 43 5.6 Suggested Outline for the Preparation of Handbooks for Fish Eggs and Larvae Identification .................................................45 5.7 Zooplankton Sample Log used by the NMFS........................................ 46 -4- 1 INTRODUCTION E. Pagetii 1.1 Historical Background The Ichthyoplankton Workshop represents one of the scientific events scheduled for 1974 in support of the activities of the Co-operative Investigations of the Caribbean and Adjacent Regions (CICAR), coordinated by the IOC. During the 6th meeting of the International Coordination Group of CICAR (Cartagena, Colombia, 16-20 July 1973), it was proposed to conduct a workshop on fish eggs and larval taxonomy, to be held in the Mexico Oceanic Sorting Centre (CPQM) and organized by the Mexican Coordinator for CICAR, Dr. A. Ayala-Castacares; the Director of the CPQM, Mr. Cesar Flores Coto., and the Curator of the international collection, Dr. Martha Vannucci. The Intergovernmental Oceanographic Commission at the 8th session of its Assembly (Paris, November 1973) approved the recommendation of the International Coordination Group. The Division of Marine Sciences of UNESCO and the IOC agreed to sponsor the workshop by providing travel expenses for the participants from developing countries as well as for some of the invited speakers, and for local arrangements. Dr. W.J. Richards, from the National Marine Fisheries Service of Miami, acted as convener of the meeting and collaborated with the local scientists in the coordination of the scientific activities to be developed during the workshop. The CPQM, which represents a part of the Mexican contribution to CICAR and is intended as a regional service unit, was selected as the host institution because of its excellent laboratory facilities as well as its sorted collections of fish eggs and larvae from the CICAR area. The CPOM was responsible for ali local arrangements, including laboratory space and equipment, and the meeting room. The national coordinators for CICAR were contacted to nominate candidates to attend the meeting. The Government of the USA provided the necessary funds for the attendance of four of their participants and the Government of the USSR provided travel funds for three Soviet scientists. 1.2 Objectives of the Workshop The purpose of the meeting was to review current advancements in the field of the studies of eggs, larvae and juveniles of fish from the tropical waters of the Atlantic Ocean, with special emphasis on the CICAR area. The workshop was meant to be mainly educational by determining our collective knowledge about the ichthyo­ plankton from the tropical waters of the Atlantic and the problems which occur there. Invited speakers were contacted to present lectures and demonstrations on the various phases of ichthyoplankton research. Emphasis was given to practical work in the laboratory, discussion of identification