DOCSLIB.ORG

Monitoring the Marine Environment of Long Island Sound at Millstone Power Station

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Monitoring the Marine Environment of Long Island Sound at Millstone Power Station T/. , I I . a I a'jtee. ANNUAL REPOI-1T 2002 'N.N;1Itp, "I.- I - , "-, ' - O'Drizzly,- - . ;-" 7 I .':I- - 11' iJ Monitoring the Marine Environment of Long Island Sound at Millstone Power Station Milsoe n ir o.mental ,' . v. M~illstone En}vironmnental Laboratory- 101.trnfi 2003 j. Monitoring the Marine Environment of Long Island Sound at * Millstone Power Station 20 Au Report 2002 Annual Report Prepared by: Staff of Millstone Environmental Laboratory Millstone Power Station Dominion Resources Services, Inc. ,- . , . I Approved by: -"v =, /Zt.x, A_ Dr. Milan Keser April 2003 Acknowledgements i This report was prepared by the personnel of Dominion Resources Services, Inc. Environmental Laboratory, located at Millstone Nuclear Power Station, PO Box 128, Waterford, CT 06385. Staff members in 2002 included: t Dr. Milan Keser, Supervisor Donald J. Danila Gregory C. Decker David G. Dodge James F. Foertch Raymond 0. Heller Donald F. Landers, Jr. { Douglas E. Morgan Dr. Edward F. Roseman John T. Swenarton Christine A. Tomichek Joseph M. Vozarik Thanks are also given to the summer intern staff from the University of Connecticut and Connecticut College for their considerable efforts in the field and laboratory: Chris Blair, Christine Culver, Larissa Graham, Jakub Kircun, Sean LaBrie, Kristen Thibodeau, and Tara Wyatt. Dr. Victor Crecco, Penelope Howell, and David Molnar of the Connecticut Department of Environmental Protection, Fisheries Division; David Taylor of the University of Rhode Island, Graduate School of Oceanography; Thomas Currier of the Massachusetts Division of Marine -J Fisheries; Tim Lynch of the Rhode Island Department of Envirornental Management, Division of Fish and Wildlife; and Dr. Michael Scherer of Marine Research, Inc. kindly supplied information on finfishes and lobster used in this report. Critical reviews of this report and oversight of the monitoring programs were completed by Dr. Ernesto Lorda, consultant to Millstone Environmental Laboratory, and the following members of the Millstone Ecological Advisory Committee: Dr. John Tietjen (chair; emeritus, City University of New York), Dr. W. Huntting Howell (University of New Hampshire), Dr. Nelson Marshall (emeritus, University of Rhode Island), Dr. William Pearcy (emeritus, Oregon State University), Dr. Saul Saila (emeritus, University of Rhode Island), Dr. Robert Whitlatch (University of Connecticut), and Dr. Robert Wilce (emeritus, University of Massachusetts). ii Monitoring Studies, 2002 I Table of Contents Acknowledgements ............ ....... ii Executive Summary................................................................................................................................ v Introduction.............................................................................................................................................1 Winter Flounder Studies .................. 9 Fish Ecology Studies .................. 129 Lobster Studies .................... 173 Rocky Intertidal Studies .................... 203 Benthic Infauna ................... 237 elgrass .. .................. 269 Table of Contents iii iv Monitoring Studies, 2002 Executive Summary Winter Flounder Studies comparison to the long-term (1983-2002) time-series in both Niantic River and Bay. However, more Stage The local Niantic River population of winter floun- 1 larvae were found than expected from the relatively der (Pseudoplezfronectes aniericanus) is potentially low spawner abundance. This was attributed to high- affected by the operation of Millstone Power Station er egg survival, a potentially important compensatory (MPS), particularly by entrainment of larvae through mechanism. Overall, larval winter flounder 'abun- the cooling-water systems of the operating units. As dance in 2002 was below average in the Niantic River a result, extensive studies of the life history and and was the third lowest in 20 years in Niantic Bay. population dynamics of this important sport and Rates of larval growth and development were posi- commercial species have been undertaken since 1976. tively correlated with water temperature, but 'other Each year, surveys of adult spawners are carried out factors such as density and prey abundance'likely also in the Niantic River during late winter and early affected growth. Despite relatively high water spring. Larval sampling is conducted at the plant dis- temperatures, growth rate of larvae this year in both charges, in Niantic Bay, and at three stations in the the river and bay were the lowest of their respective Niantic River. Age-0 juveniles are collected at two time-series. This may have affected survival as the sites in the river. Winter flounder are also commonly larval mortality rate in 2002 increased from record found in year-round trawl monitoring program (TMP) low levels during the past 2 years to just below the samples. long-term average. Density-dependence was exam- Seawater temperature, which can have potentially ined by comparing mortality and-egg production important effects during spawning, egg incubation, estimates (a measure of yolk-sac larval stage abun- the larval period, and the remainder of the first year dance) at* various monthly and seasonal water of life, attained record or near-record highs during temperatures. Results of this analysis suggested that most months of 2002. During the 2002 adult winter larval mortality decreased with decreasing egg flounder spawning season, A-mean trawl catch-per- production (i.e., density-dependency) and increasing unit-effort (CPUE) of fish larger than 15 cm in the April water temperatures (i.e., faster development).' Niantic River was 2.2. Although relatively low, this Following larval metamorphosis and settlement, CPUE represented about a 50% increase over 2001. demersal age-0 young were sampled by beam trawl at Abundance of winter flounder spawners peaked in the two sites in the Niantic River. 'Following a record early, 1980s and decreased thereafter, most likely high abundance of newly settled young in 2001, from stock and recruitment effects (i.e., decreased densities were lower this year, although better than per-capita recruitment at high stock sizes), a generally those typically observed since 1983. Mortality rate in warming winter trend, and increased, rates of 2002 was about the same as the long-term average at exploitation. Niantic River CPUE was significantly one station, but was the third highest at the other correlated with several other winter flounder abun- station. Although sampling variability was relatively dance indices in other Southern New England waters high in 2002, juvenile abundance in late summer and numbers currently remain low throughout the appeared to be lower than during the past 2 years. region. The 2001-02 A-mean CPUE calculated for young The Jolly stochastic model was applied to mark and winter flounder'collected during late fall and early recapture data to estimate the absolute abundance of winter at TMP stations was the lowest recorded in 26 the Niantic River adult spawning population. The years and did not reflect the high abundance of the abundance estimate for 2001 of winter flounder larger 2001 year-class as indicated by beam trawl sampling than 20 cm was 4.1 thousand, the lowest estimate of during the previous summer. Nevertheless, over the the series. Other recent estimates of about 6-10 long term these two age-0 abundance indices were, thousand fish were considerably. less than estimated significantly correlated ' and helped to 'identify population sizes during 1984-91, which ranged emerging strong or weak year-classes. In any case, between about 33 and 80 thousand. Annual female however, fewer'age-I juveniles have been taken spawner abundance estimates since 1976 ranged from during each year of the Niantic River adult spawning 2 thousand in 2001 ;to 75 thousand in 1982, with population surveys since the early 1980s, with a' corresponding total egg production estimates from CPUE for fish in the lower river navigational channel about 1.7 to 44.8 billion for the same years. particularly low. This abundance decrease was much Abundance of newly-hatched (Stage I) winter less when a CPUE was calculated for fish found only flounder larvae was about average this year in in the upper portion of the river. The distribution of Executive Summary v age-I fish in Niantic River and Bay appeared to have Empirical mass-balance calculations showed that a changed over the years, which was attributed to large number of entrained larvae likely come from a environmental factors (e.g., water temperature, number of sources in Long Island Sound (LIS), I bottom habitat) unrelated to MPS operation. including stocks associated with the Connecticut and Abundance indices of age-0 young were either not Thames Rivers, as well as from the Niantic River. significantly correlated or were negatively correlated For the second year, estimates of the fraction of with the abundance of female adult spawners 3 to 5 entrained larvae in 2002 from the Niantic River were 1I years later. Conversely, positive correlations were similar when determined by either the mass-balance 4 found between age-I abundance indices and these model (14%) or an independently conducted study of older fish. However, the forns of these significant genetic stock identification (12%). Remarkably simi- 1 lar estimates in both 2001 and 2002 suggested that relationships were unclear. Thus, none of the early I life stages were considered to be a reliable predictor the mass-balance model provided reasonable esti- of potential
Load more

Recommended publications
  • Winter Flounder Pseudopleuronectes Americanus Stock Enhancement in New Hampshire: Developing Optimal Release Strategies
    University of New Hampshire University of New Hampshire Scholars' Repository Doctoral Dissertations Student Scholarship Spring 2002 Winter flounder Pseudopleuronectes americanus stock enhancement in New Hampshire: Developing optimal release strategies Elizabeth Alden Fairchild University of New Hampshire, Durham Follow this and additional works at: https://scholars.unh.edu/dissertation Recommended Citation Fairchild, Elizabeth Alden, "Winter flounder Pseudopleuronectes americanus stock enhancement in New Hampshire: Developing optimal release strategies" (2002). Doctoral Dissertations. 62. https://scholars.unh.edu/dissertation/62 This Dissertation is brought to you for free and open access by the Student Scholarship at University of New Hampshire Scholars' Repository. It has been accepted for inclusion in Doctoral Dissertations by an authorized administrator of University of New Hampshire Scholars' Repository. For more information, please contact [email protected]. INFORMATION TO USERS This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer. The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with small overlaps.
    [Show full text]
  • Schedule Onlinepdf
    Detailed schedule 8:30 Opening session 9:00 Keynote lecture: Impacts of climate change on flatfish populations - patterns of change 100 days to 100 years: Short and long-term responses of flatfish to sea temperature change David Sims 9:30 Nine decades of North Sea sole and plaice distributions Georg H. Engelhard (Engelhard GH, Pinnegar JK, Kell LT, Rijnsdorp AD) 9:50 Climatic effects on recruitment variability in Platichthys flesus and Solea solea: defining perspectives for management. Filipe Martinho (Martinho F, Viegas I, Dolbeth M, Sousa H, Cabral HN, Pardal MA) 10:10 Are flatfish species with southern biogeographic affinities increasing in the Celtic Sea? Christopher Lynam (Lynam C, Harlay X, Gerritsen H, Stokes D) 10:30 Coffee break 11:00 Climate related changes in abundance of non-commercial flatfish species in the North Sea Ralf van Hal (van Hal R, Smits K, Rijnsdorp AD) 11:20 Inter-annual variability of potential spawning habitat of North Sea plaice Christophe Loots (Loots C, Vaz S, Koubii P, Planque B, Coppin F, Verin Y) 11:40 Annual variation in simulated drift patterns of egg/larvae from spawning areas to nursery and its implication for the abundance of age-0 turbot (Psetta maxima) Claus R. Sparrevohn (Sparrevohn CR, Hinrichsen H-H, Rijnsdorp AD) 12:00 Broadscale patterns in population dynamics of juvenile plaice: W Scotland 2001-2008 Michael T. Burrows (Burrows MT, Robb L, Harvey R, Batty RS) 12:20 Impact of global warming on abundance and occurrence of flatfish populations in the Bay of Biscay (France) Olivier Le Pape (Hermant
    [Show full text]
  • (Paralichthys Lethostigma) in the Galveston Bay Estuary, TX
    DISTRIBUTION, CONDITION, AND GROWTH OF NEWLY SETTLED SOUTHERN FLOUNDER (Paralichthys lethostigma) IN THE GALVESTON BAY ESTUARY, TX A Thesis by LINDSAY ANN GLASS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2006 Major Subject: Wildlife and Fisheries Sciences DISTRIBUTION, CONDITION, AND GROWTH OF NEWLY SETTLED SOUTHERN FLOUNDER (Paralichthys lethostigma) IN THE GALVESTON BAY ESTUARY, TX A Thesis by LINDSAY ANN GLASS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Jay R. Rooker Committee Members, William H. Neill Antonietta Quigg Head of Department, Delbert M.Gatlin III May 2006 Major Subject: Wildlife and Fisheries Sciences iii ABSTRACT Distribution, Condition, and Growth of Newly Settled Southern Flounder (Paralichthys lethostigma) in the Galveston Bay Estuary, TX. (May 2006) Lindsay Ann Glass, B.S., Texas A&M University-Galveston Chair of Advisory Committee: Dr. Jay R. Rooker Several flatfish species including southern flounder (Paralichthys lethostigma) recruit to estuaries during early life. Therefore, the evaluation of estuarine sites and habitats that serve as nurseries is critical to conservation and management efforts. I used biochemical condition and growth measurements in conjunction with catch-density data to evaluate settlement sites used by southern flounder in the Galveston Bay Estuary (GBE). In 2005, beam-trawl collections were made in three major sections of the GBE (East Bay, West Bay, Galveston Bay), and three sites were sampled in each bay.
    [Show full text]
  • Distribution and Abundance of Pleuronectiformes Larvae Off Southeastern Brazil
    BRAZILIAN JOURNAL OF OCEANOGRAPHY, 62(1):23-34, 2014 DISTRIBUTION AND ABUNDANCE OF PLEURONECTIFORMES LARVAE OFF SOUTHEASTERN BRAZIL Camilla Nunes Garbini*, Maria de Lourdes Zani-Teixeira , Márcio Hidekazu Ohkawara and Mario Katsuragawa Instituto Oceanográfico da Universidade de São Paulo (Praça do Oceanográfico, 191, 05508-120 São Paulo, SP, Brasil) *Corresponding author: [email protected] http://dx.doi.org/10.1590/S1679-87592014051706201 ABSTRACT The objective of this study was the description of the composition, abundance and density in horizontal and vertical distribution of Pleuronectiformes larvae on the southeastern Brazilian continental shelf. The samples were collected with bongo nets and a Multi Plankton Sampler (MPS), both in summer and winter 2002. A total of 352 flatfishes larvae were collected in summer and 343 in winter, representing three families and a total of 13 taxa: Paralichthyidae ( Citharichthys cornutus, C. spilopterus, Citharichthys sp ., Cyclopsetta chittendeni, Syacium spp ., Etropus spp . and Paralichthys spp .), Bothidae ( Bothus ocellatus and Monolene antillarum ) and Cynoglossidae ( Symphurus trewavasae, S. jenynsi, S. plagusia and S. ginsburgi ). The most abundant taxa were Etropus spp ., Syacium spp . and Bothus ocellatus . Etropus spp . occurred mainly as far out as the 200 m isobath and Syacium spp . from 100 m. B. ocellatus was present mainly in the oceanic zone between Ubatuba and Rio de Janeiro as from the 200 m isobath. The greatest average densities of these species occurred in the strata from 0 to 20 m depth in summer and between 20 and 40 m in winter. RESUMO O objetivo deste estudo foi descrever a composição, abundância, densidade, distribuição horizontal e vertical das larvas de Pleuronectiformes ao longo da plataforma continental Sudeste brasileira.
    [Show full text]
  • Locus Number Estimation of MHC Class II B in Stone Flounder and Japanese Flounder
    Int. J. Mol. Sci. 2015, 16, 6000-6017; doi:10.3390/ijms16036000 OPEN ACCESS International Journal of Molecular Sciences ISSN 1422-0067 www.mdpi.com/journal/ijms Article Locus Number Estimation of MHC Class II B in Stone Flounder and Japanese Flounder Jiajun Jiang †, Chunmei Li †, Quanqi Zhang and Xubo Wang * Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Qingdao 266003, China; E-Mails: [email protected] (J.J.); [email protected] (C.L.); [email protected] (Q.Z.) † These authors contributed equally to this work. * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel./Fax: +86-532-8203-1986. Academic Editor: Ritva Tikkanen Received: 2 December 2014 / Accepted: 25 December 2014 / Published: 13 March 2015 Abstract: Members of major histocompatibility complex (MHC) family are important in immune systems. Great efforts have been made to reveal their complicated gene structures. But many existing studies focus on partial sequences of MHC genes. In this study, by gene cloning and sequencing, we identified cDNA sequences and DNA sequences of the MHC class II B in two flatfishes, stone flounder (Kareius bicoloratus) and homozygous diploid Japanese flounder (Paralichthys olivaceus). Eleven cDNA sequences were acquired from eight stone flounder individuals, and most of the polymorphic sites distributed in exons 2 and 3. Twenty-eight alleles were identified from the DNA fragments in these eight individuals. It could be deduced from their Bayesian inference phylogenetic tree that at least four loci of MHC class II B exist in stone flounder. The detailed whole-length DNA sequences in one individual were analyzed, revealing that the intron length varied among different loci.
    [Show full text]
  • The United States and Japanese Counterpart Panels on Aquaculture
    PREFACE TheUnited States and Japanese counterpart panels onaquaculture wereformed in 1969 under the UnitedStates-Japan Cooperative Program inNatural Resources UJNR! The panels currently include specialistsdrawnfrom the government andacadeinic departinents mostconcerned withaquaculture- Chargedwith exploring anddeveloping bilateral cooperation, thepanels have focused their efforts on exchanginginformation related to aquaculture thatcould be of benefittoboth countries. TheUJNR was begun during theThird Cabinet Level Meeting ofthe Joint United States-Japan CommitteeonTrade and Economic Affairsin January 1964,ln addition toaquaculture, currentsubjects in theprogram include toxicmicroorganisms, airpollution, energy, forage crops, national parkmanagement, rnycoplasmosis,windand seismic effects, protein resources, forestry, andseveral joint panels and corninitteesin marine resolve research, development, andutilization. Accomplishmentsiticlude:increased communication andcooperation amongtechnical specialists; exchangesofinformation, data,and research findings; annual meetings ofthe panel, a policy-coordinating body;administrative staffmeetings; exchanges ofequipment, materials, andsamples; several major technicalconferences; andbeneficial effects of internationalrelations. The26th U.S.-Japan Aquaculture PanelSyinposium washeld in Durham, New Hampshire, from16- 18September ] 997. Following thesyrnposiuin, fieldtrips during a seven-day period included theareas of Portsmouth,NewHainpshire; andBar Harbor, Eastport, Camden, and Boothbay Harbor, Maine.
    [Show full text]
  • Euryhalinity in an Evolutionary Context Eric T
    University of Connecticut OpenCommons@UConn EEB Articles Department of Ecology and Evolutionary Biology 2013 Euryhalinity in an Evolutionary Context Eric T. Schultz University of Connecticut - Storrs, [email protected] Stephen D. McCormick USGS Conte Anadromous Fish Research Center, [email protected] Follow this and additional works at: https://opencommons.uconn.edu/eeb_articles Part of the Comparative and Evolutionary Physiology Commons, Evolution Commons, and the Terrestrial and Aquatic Ecology Commons Recommended Citation Schultz, Eric T. and McCormick, Stephen D., "Euryhalinity in an Evolutionary Context" (2013). EEB Articles. 29. https://opencommons.uconn.edu/eeb_articles/29 RUNNING TITLE: Evolution and Euryhalinity Euryhalinity in an Evolutionary Context Eric T. Schultz Department of Ecology and Evolutionary Biology, University of Connecticut Stephen D. McCormick USGS, Conte Anadromous Fish Research Center, Turners Falls, MA Department of Biology, University of Massachusetts, Amherst Corresponding author (ETS) contact information: Department of Ecology and Evolutionary Biology University of Connecticut Storrs CT 06269-3043 USA [email protected] phone: 860 486-4692 Keywords: Cladogenesis, diversification, key innovation, landlocking, phylogeny, salinity tolerance Schultz and McCormick Evolution and Euryhalinity 1. Introduction 2. Diversity of halotolerance 2.1. Empirical issues in halotolerance analysis 2.2. Interspecific variability in halotolerance 3. Evolutionary transitions in euryhalinity 3.1. Euryhalinity and halohabitat transitions in early fishes 3.2. Euryhalinity among extant fishes 3.3. Evolutionary diversification upon transitions in halohabitat 3.4. Adaptation upon transitions in halohabitat 4. Convergence and euryhalinity 5. Conclusion and perspectives 2 Schultz and McCormick Evolution and Euryhalinity This chapter focuses on the evolutionary importance and taxonomic distribution of euryhalinity. Euryhalinity refers to broad halotolerance and broad halohabitat distribution.
    [Show full text]
  • Ontogeny of the Digestive System in Lumpfish (Cyclopterus Lumpus L.) Larvae in Relation to Growth and Start Feeding Diet
    Ontogeny of the digestive system in lumpfish (Cyclopterus lumpus L.) larvae in relation to growth and start feeding diet A histological and stereological approach Joachim Larsen Marthinsen Marine Coastal Development Submission date: June 2018 Supervisor: Elin Kjørsvik, IBI Co-supervisor: Kjell Inge Reitan, IBI Norwegian University of Science and Technology Department of Biology Abstract Global aquaculture production of Atlantic salmon (Salmo salar) has stabilized since 2012 due to high prevalence of the ectoparasitic sea lice (Lepeophtheirus salmonis). Deployment of lice-eating cleaner fish is considered one of the most effective and sustainable methods to control sea lice infestations in salmon cages, of which lumpfish (Cyclopterus lumpus) is the most used and commercially produced species in Norway. The Norwegian aquaculture lumpfish production has escalated greatly since 2012 but is currently characterized by variable growth and survival during the larval stage. Little is also known regarding nutritional requirements and development of the digestive system in lumpfish larvae, the latter of which is determining for larvae’s capacity to assimilate nutrients required for all metabolic processes. The present study aimed to describe digestive system ontogeny in lumpfish from hatching to 50 days post hatch (dph) based on histological and stereological methods and to evaluate effects of different start feeding regimes on growth, survival and development of the liver, stomach and gut. Ontogeny and dietary effects were investigated by conducting a start feeding experiment in which three triplicate groups received different diets during the start feeding period (2-22 dph). Larvae from one group were fed enriched Artemia while two groups were offered Acartia tonsa, either for the full start feeding period or with an early weaning to formulated diet 6-8 dph.
    [Show full text]
  • Draft List of Foreign Fisheries
    Classification ** (Presence of mortality or injury (P/A), Co- Company (if Marine Mammal Occurrence (C/O), Fishery/Gear Number of aquaculture or Interactions (by group Marine Mammal Analogous Gear Target Species or Product Type Vessels processor) Area of Operation or species) Bycatch Estimates (A/G), No Antigua and Barbuda Exempt Fisheries lobster, rock, spiny, demersal fish (snappers, groupers, grunts, surgeonfish), flounder pots, traps 74 Lewis Fishing Antigua & Barbuda EEZ none documented none documented A/G lobster, rock, spiny free diving, loops 19 Lewis Fishing Antigua & Barbuda EEZ none documented none documented A/G Queen conch (Strombus gigas), Dive (SCUBA & free molluscs diving) 25 not applicable Antigua & Barbuda EEZ none documented none documented A/G handline, hook and snapper line 71 Lewis Fishing Antigua & Barbuda EEZ none documented none documented N/I, A/G Off-shore pelagic spp. (tunas, dolphinfish, wahoo, etc.) Drop line 6 not applicable Antigua & Barbuda EEZ none documented none documented N/I, A/G Coastal pelagic spp. (southern sennets, jacks, mullets, herrings, etc.) Beach seine 1 not applicable Antigua & Barbuda EEZ none documented none documented N/I, A/G Coastal pelagic spp. (herrings, ballyhoo, etc.) Bait net 1 not applicable Antigua & Barbuda EEZ none documented none documented N/I, A/G Export Fisheries Marine mammals susceptible to gillnet gear in coastal waters of the Caribbean: tucuxi, pygmy sperm whale, Risso's dolphin, bottlenose dolphin, Atlantic spotted Demersal spp. (grunts, parrotfish, dolphin, killer
    [Show full text]
  • Biology and Ecology of the California Halibut, Paralichthys Californicus
    UC San Diego UC San Diego Electronic Theses and Dissertations Title Quantifying nursery habitat value for the California halibut, Paralichthys californicus : distribution, elemental fingerprinting and demographic approaches Permalink https://escholarship.org/uc/item/6ws521pk Author Fodrie, Fredrick Joel Publication Date 2006 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA, SAN DIEGO Quantifying nursery habitat value for the California halibut, Paralichthys californicus: distribution, elemental fingerprinting and demographic approaches A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Oceanography by Fredrick Joel Fodrie Committee in charge: Professor Lisa A. Levin, Chair Professor Ronald Burton Professor Joris Gieskes Professor John Hunter Professor Russ Lande Professor Enric Sala Professor Clint Winant 2006 ii Copyright: Fredrick Joel Fodrie, 2006 All rights reserved. ii iii The dissertation of Fredrick Joel Fodrie is approved, and it is acceptable in quality and form for publication on microfilm: ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ Chair University of California, San Diego 2006 iii
    [Show full text]
  • Feeding Habits of Stone Flounder Platichthys Bicoloratus Larvae in Mutsu Bay, Japan
    Title Feeding habits of stone flounder Platichthys bicoloratus larvae in Mutsu Bay, Japan Author(s) Takatsu, Tetsuya; Suzuki, Yuusuke; Shimizu, Akiko; Imura, Kazuo; Hiraoka, Yuko; Shiga, Naonobu Fisheries Science, 73(1), 142-155 Citation https://doi.org/10.1111/j.1444-2906.2007.01312.x Issue Date 2007-02 Doc URL http://hdl.handle.net/2115/22540 Rights © 2007 公益社団法人日本水産学会; © 2007 The Japanese Society of Fisheries Science Type article (author version) File Information FS73-1-142.pdf Instructions for use Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP Feeding habits of stone flounder Platichthys bicoloratus larvae in Mutsu Bay, Japan Feeding habits of stone flounder larvae * a b c TETSUYA TAKATSU, YUUSUKE SUZUKI, AKIKO SHIMIZU, KAZUO IMURA, YUKO HIRAOKA and NAONOBU SHIGA Faculty of Fisheries Sciences, Hokkaido University, 3-1-1, Minato, Hakodate, Hokkaido 041-8611, Japan *Corresponding author: Tel/Fax: +81-138-40-8822. Email: [email protected] a Present address: Murakami City Hall, Sanno, Murakami, Niigata 958-8501, Japan. b Present address: Hakodate Goryokaku Hospital, Goryokaku, Hakodate, Hokkaido 040-8611, Japan. c Present address: Fisheries Division, Economic Affairs Department, Nemuro Subprefecture of Hokkaido Government, Tokiwa, Nemuro, Hokkaido 087-8588, Japan. Abstract: To clarify the feeding strategy of pelagic larvae of the stone flounder in Mutsu Bay, the dietary composition and prey size was investigated from February to April during 1989–1999. Diets were compared with the numerical and volumetric compositions and frequency of occurrence of each prey species. Mensuration formulae were applied to estimate individual prey volume in the diet, while the length of planktonic species was measured from net and water samples.
    [Show full text]
  • Citharichthys Sordidus) to a Continental Shelf Nursery
    AN ABSTRACT OF THE THESIS OF Christopher J. Donohoe for the degree of Doctor of PhilosoDhy in Fisheries Science presented on August 2, 2000. Title: Metamorphosis. Growth, and Settlement of Pacific Sanddab (Citharichthys sordidus) to a Continental Shelf Nursery. Inferred from Otolith Microstructure. Redacted for Privacy Abstract approved: Douglas F. Markie Processes of metamorphosis, settlement, and growth were examined in Pacific sanddab using field studies and otolith microstructure. l'his flatfish transforms at large sizes, has a gradual metamorphosis, and settles to a nursery on the middle continental shelf. Eye migration takes 3 months and "metamorphosis proper" which begins after completion of eye migration (CEM) takes an additional 1-2 months. Larvae at CEM ranged from 30-46 mm SL and were 125-224 d old. Coefficients of variation in length and age at CEM were 0.081 and 0.122, similar to flatfishes that transform at smaller sizes. Accessory pnmordia (AP) and an opaque region formed in the sagitta 14-49 d before CEM and 2-3 months before the start of the juvenile period. Depth stratified benthic surveys were conducted on the continental shelf and upper slope off central Oregon bimonthly in 1989 and in March 1990-1994. Peak settlement occurred in late fall and winter. Larvae initially landed on the upper slope but continued inshore to the middle shelf, a process that takes -50-60 d. The nursery is centered at 80-119 m in winter and 50-99 m in summer. Abundance of settling Pacific sanddab on the upper slope in March 1989- 1994 was strongly correlated to onshore Ekman transport during the preceding 30 d (r=0.91, P=0.013, n=6).
    [Show full text]