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ELHS Back Then Newsletter of the STAGES Early Life History Section of the American Fisheries Society Volume 35, Number 2 Lee A. Fuiman, Editor June 2014 38th Annual Larval Fish Conference Inside this issue President’s Message ............1 Registration News from the Regions ........2 Online registration for the 38th Annual Larval Fish Section Officers ....................2 Conference, to be held in Québec City in conjunction with the 144th annual meeting of the American Fisheries Upcoming Events .................8 Society from 17 to 21 August 2014, is now open here People ..................................9 under “Events/Registration.” Publications ........................12 We are delighted to announce that the conference will feature over 140 contributions from 15 countries. To fit the AFS meeting schedule of presentations and events, we needed to plan parallel sessions throughout the meeting. AFS acknowledges the specificity of the ELHS Back Then Larval Fish Conference, and will either provide rooms 10 years ago: Newsletter Editor that are adjacent or located within the same area of the Perce Powles steps down after conference centre. Keynote presentations as well as the almost 5 years. Lee Fuiman takes “A Tribute to William C. Leggett” special session will be over.” [Ed: looks like my time to go held in plenary. is long overdue; any takers?] 15 years ago: John Dower takes The presentation schedule will be published by AFS over as ELHS webmaster, moves shortly. A detailed version of the schedule will then be the website to a server at UBC and gives it a new design. published on the Larval Fish Conference website. In the meantime, please note that the Larval Fish Conference 20 years ago: ELHS celebrates 15 th years as an AFS Section” will run from Monday August 18 (PM) to Thursday August 21 (PM). A Larval Fish Conference social will be ...continued on p. 8 25 years ago: 13th LFC was held in Merida, Mexico, hosted by Mote Marine Lab; 150 participants (13 countries), >100 papers and President’s Message posters This is my last message as President of the ELHS as I will turn the lead to 30 years ago: Term of Section Myron Peck at the upcoming LFC meeting in Québec City in August. Frank President extended from 1 year Hernandez will hand over the responsibility of Secretary to Fred Scharf. First to 2 years. Bob Hoyt is first 2-year of all I’d like to give a big thank you to Frank for his great job as Secretary and President. to the newcomers for volunteering to take the new positions. Many thanks also go to all the other officers and committee chairs for all the work they are doing in the background and all of you for your interest and support in keeping our section active and special. Without you all, there would be no functioning ELHS. Deadline for material I have enjoyed my tenure as President, since it is fun to represent such a lively and dedicated to be included in the community. Although we are a small group, we can have quite an impact and the interest in our field of work is visible in the great response of scientists coming to our meetings. next issue of Stages: September 5, 2014 With me and Myron, as upcoming President, a European perspective has been added. I’m not sure everyone is happy with that, but it has widened our recognition and can help the scientific world to grow together even more. The offers of colleagues to host LFC meetings in ...continued on p. 14 Stages News from the Regions to year. In addition to the pleasure of For those of our students who are European having an entire semester (5 ECT willing to endure wet floors, cold water, Region points) to talk about fish larvae, there crashing algae cultures, and the risk are concrete learning outcomes of electric shock from heaters in the Hubert Keckeis focused on the major developmental Artemia hatching tanks, we have the events and constraints in the early life course Marine Juvenile Production (10 history of fishes; the role of the physical ECT points). In this course, students from: Audrey Geffen, Arild environment on the distribution, growth learn the theory and practice of larval Folkvord, University of Bergen and behaviour of early life stages; rearing through exercises that cover the major recruitment mechanism topics such as developmental staging, Fish larvae in the classroom hypotheses underlying variations in gamete quality, feeding rate, live There are several courses on fish fish population abundance; and a prey manipulation, otolith analysis, larvae scattered around the globe, basic knowledge of possibilities and and more. Short term (2-4 weeks) but few of them run as full semester limitations of otolith microstructure and experiments are planned and executed courses giving time for an experimental chemistry analyses in elucidating early by the whole class, or else individuals study. At University of Bergen we life history characteristics. Working and groups take on mini-projects on have two larval fish courses: a lecture/ with classic and current literature, the particular skills or topics. The species seminar course led by Arild Folkvord, students also learn to extract relevant that are used in the course depend on and a hands-on larval rearing course information from aquaculture and availability, adding a realistic amount led by Audrey Geffen. What can you do marine juvenile production studies and of stress to the air. Herring and cod with fish larvae over a whole semester? apply them to field and fisheries-related are the species we include most often, Plenty! research. but we have also worked with hake, haddock, and wrasse eggs and Larval Fish Ecology covers larvae. The students compile the central topics in recruitment biology results of the mini-projects and of fishes. The lectures deal with experiments into a joint report relevant recruitment mechanisms in with and oral presentations. fish populations with emphasis on We have experimented with processes regulating growth and different presentation styles also: survival in the early life history of in 2012, we studied parental fishes. The importance of early life effects in larval herring and studies of fishes for management of used the results in a formal fish resources is also highlighted, often debate, with the question before taking a starting point with Fuiman the house being “Are mothers & Werner’s book Fishery Science: or fathers more important?” The unique contributions of early life We’ve just completed this year’s stages. The seminar part is based on Photo of larval cod otolith – demonstrating the experiment, testing the effects of student presentations of papers from use of radius-at-age to study size-selective live prey manipulation in a “food selected topics which vary from year processes. quality vs quantity” scenario. ...continued on p. 10 Section Officers President Secretary Treasurer Catriona Clemmesen Frank Hernandez Jeffrey Buckel GEOMAR - Helmholtz Centre for Department of Coastal Sciences Center for Marine Sciences & Ocean Research Kiel University of Southern Mississippi Technology [email protected] [email protected] North Carolina State University [email protected] President-Elect Secretary-Elect Myron Peck Fred Scharf HELP KEEP Institut für Hydrobiologie und Department of Biology & Marine Biology STAGES INTERESTING... Fischereiwissenschaft University of North Carolina, Wilmington Send us a report of your University of Hamburg [email protected] research activities. [email protected] 2 AFS - Early Life History Section June 2014 Southern an overall increase in average total Institute, Erik Oberg (MS graduate abundance during the same drought student under direction of Lee Fuiman), Region periods. Spatially, fish assemblages is examining the impacts that different responded to zones of lower salinity levels of dietary fatty acids have on Frank Hernandez on the two large river estuary systems, larval southern flounder (Paralichthys the Pamlico-Tar and the Neuse Rivers. lethostigma). The objective is to better from: Anthony Overton, East Increased average total abundances understand larval nutrient requirements of bay anchovy, silversides, and to improve intensive culture of the Carolina University spot were observed at stations species. To do this, captive spawned What Happens When an Estuary with lower salinities, while mojarra, southern flounder eggs were hatched Gets Thirsty? – Juvenile Fish pinfish, and red drum average total and reared at a temperature of 18 Community Responses to Drought abundances declined. While salinity °C and salinity of 33.5 ppt. Larvae Conditions in Large Estuaries was not determined to be a factor between 4 days posthatch (dph) and Tracy McCulloch, Nick Tolopka, Zach in our exploratory analysis, pairwise 15 dph larvae were fed one of four Gillum, Anthony Overton comparisons of salinity between years live prey diets. The diets were rotifers and between stations found significant enriched with different combinations Determining how fish respond to differences for both. Determining if fish of fatty acid emulsions. At 15 days, environmental changes is a question of assemblages are responding to river approximately the midpoint of the interest for many biologists. In estuarine flow, increased salinity due to low flows, pelagic larval stage, larval fitness habitats, environmental conditions can or cascading effects of low flows and was quantified by measuring growth, change rapidly with tides, variable river increased salinity, such as changes in survival, and behavioral performance. flows, and salinity gradients. Larval primary production, trophic cascades, Incorporation of fatty acids into the and juvenile fishes use estuaries as or hypoxia warrant further investigation. tissues was also measured to see if nursery grounds, adjusting to these It cannot be overstated how useful certain fatty acids were accumulated changes daily. Long term data sets sampling programs such as these can differentially into the head or body. This are becoming more readily available be for management purposes, as well was done by carefully sectioning the to investigate fish distribution, as developing a better understanding heads and bodies of 15 dph larvae and abundance, and assemblage of the ecology in these systems.
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