W&M ScholarWorks Virginia Marine Resource Bulletin Virginia Sea Grant Spring 3-1-2000 Marine Resource Bulletin Vol. 32, No. 1 Virginia Sea Grant Virginia Institute of Marine Science Follow this and additional works at: https://scholarworks.wm.edu/vimsmrb Part of the Aquaculture and Fisheries Commons Recommended Citation Virginia Sea Grant and Virginia Institute of Marine Science, "Marine Resource Bulletin Vol. 32, No. 1" (2000). Virginia Marine Resource Bulletin. 71. https://scholarworks.wm.edu/vimsmrb/71 This Book is brought to you for free and open access by the Virginia Sea Grant at W&M ScholarWorks. It has been accepted for inclusion in Virginia Marine Resource Bulletin by an authorized administrator of W&M ScholarWorks. For more information, please contact [email protected]. RESOURCE BULLETIN Spotlight on Cobia . Virginia Sea Grant College Program Virginia Institute of Marine Science College of William and Mary Volume 32 • Number 1 • Spring 2000 Copy of Page 1.max T\.1~s; ~s,s;ue of t\.1~ 15-v.Lleti.vc nLgV!L~(?\.1r::s; the sco-pe of '(ts.wvch (;lv~-Gl s-potLLgVlt CvcltvcvLvcg (;lchvLr::tJ t!AK?.~vo-g -pl!Ace (;It vr MS ovc t\.1e FvvfLs.h, coiJi-C! . T V1e cobi-o \1·/0VR Ls 1-v"--pD'(b? vet fo'( w,CJ V~-!:j vt(;!S.Ovcs. bet Vi 1-vcs.Lc;le !A V'-Gl ou: sLGle tV\e VIM.S COv1AV'A.U~v~t!:j. OV'v H ere ovc ww.nvzs, tne e>cpeV:.Ls.e of severc.JL rle;JClYtV'VI.evcts. V1rs beevv brousnt tooetV\er, V'VI.OS:: V'-cr::rblv, Adv~sorv sev•;Lce.s, Ft.snevi.es., C-lvcd tV1e AqurcuL- ~ <) u tuve c,evcet i-cs C-lvc-DI r;~eeclLvcg r ecVivccLog!:j c evctev. Tne resuLti-vcg StJ vctYS!:j V\(;ls V'VI.vztuC'LlH bev.e{i.ted tne veservchev.s i-A·;oLverl C-lV'-d ovee~tLv v ~ v 'AcceLev!Aterl cvx ,<zy•,ov;le?.ee cf t!r,Ls ~VVI-pressLve fLs\.1 . Muc!r, cf :V\e '(tS.~C'rc~ V'VI.OVvtVI ccw,es ::VivcoWVl V~V?lV'-~C-1 sw c,vC-lvvc CiV'-rl eve VLroi.vvi.!A MOvi.v ..e () ~ ~ ~ R.escvJces. Crwc~\A.!-S.S.i.oV'- ' S vec·(eCl tt.C'V'-CIL fi.s.!r, ~v"g c\eve Lup~"A.tvct fA. vcd vi.vgi.v.. i. ll wo.lt'(V'VI.tV'- O.V',d vecvenhwv!Al fi.s,h~vs Vinve !ALso beevc o.chv~, veL~(;l(!Le nDvtvcevs C!t t'Jtvij s:e'Jl, -pycvLD\i.vvg Sil~CLV'VI.evcs fov veservcv ClV'.d S,1JO'IJV'-i.v.g, 1/!V'-d. -pC!v :t.cL-pV! : t.V'-g l. /'1, i:l v" nvcgci.vcg t(;lggLvcg pogtC'V'VI.. sevevi/!L ves;er vc n i. vvst~ :.v..t es C'vvd s':.!A:es •r~L t Vii-"'- t V!e .Se!A c;vO.V'vt CoLLege 'PYOoYC!V'VI....., Cobi.C' !tws lov,o"-" tJ eevc !A vese'Avc!r, -pv~DYLtt.-1u V~t tn~ V\vc~'JtrsL:~..-~u o-,r .Soutv,evvc- tv'li.ss~ss~-p-p~'s C1v1:lf Co!Ast ~esei:lYcn l rboro.tov·ij C<V'v?. ll: :V1e V\"'-~veys.~~ij of Tex.Cls. AV'-d. 'cnrc(,{gn !A Less fovt"A.O~ iAYYii"'-Sew.eV'vt, ~'--lmtn CC'rOL~voC! evccnv1:voge.s tCVVvt"AtvcWL {Ls.V,UW..tV'v Clvvd veoeot~CV'-C'L ClVvSler·s i:!l Yt'POrt t!Agged {~sf-,, -pvovi.c\ i.vog Cri.ti.CC'l l~V'viZS to Vi.vg~vcc!A 's, '1/CrR. So Lr Ls M•t sv.r-pri.s.LV'-8 tn!A':. dA.ti.V'-g (;! vecevvt. ;tvt.e~z ~vcg tne ~cieCl r>f llC"Li.vvg ti:llt vets !A v'vd ex.-pn t. eV'-ces :n roug \.1 o veg i.o veil l, cco-peve>ti.ve cc fji.fl nrciect s~cv1:L?. .suviV~ce . A D·Ucen::> ~ V'VI.eet~v.. o ':lOS. VieLe! e>t r.:v,e vvovlcl J ~ ~ Aquoculture .Soc~e::tJ vKee:cvvg i.vc New DvLef7.V'-S, chs -pos'.: Feb YuOr tJ llvc-~1, CL<v~vcg :::V,e Dl~.scvcs.si.ovvs, ?LiAvc-s fov iA w.ne focvcsecl giA r:: nevi.V'vg (;li'A.C!IIvg vese.::wcV,ers v./'\,folclerl. 1 V1C1t v~tee:::~"'-0 1-s. s,cV\edv.Lec\ to :!AK?.e -pLClce LV'v LC<:e s.uV'VI.V'VI.tr- Lv. DeW"'- spvi.vcgs , M ~ssi.ssc-pflc, ot :Y.e cVIV'VI.?us; o1 tne c,uL{ Ccrst '2.es.ee> ·rc~ LC!lJI'YiAtcvv . u rVie bevvefi.ts. rJ v;ovlzL vvg co:::;et V!er- ilve vcot LV'-si.g"'-l,fLc'A"'-:. rnvougn -plClvcV'-Lvcg, ccnvev.. t 'Avvd. fu:vzve -p-1ojects. c!Avc- be :!ALlored. to fLt togetV.ev, :"' cov-A.-plevA.e"'-t ere VI otnev. 1/l "'-d : o (;! :/lvcMce cuv sV!Mec! lzl'\,ov;le?.ge tJos,e Reswvcltl cloLlV~Y.S 'di.lL be s;tvetcV.e?. fuvtllev L"'- :ne precess, CJV'-d vesei:lvcV! resuLts wi.LL be wcove wi.DielCA Clvcrl vo.ni.dl r--1 chssewvLvcr:ed . Pos.ctLve e+-rec'::s v r U ' I vevwL r.:neV'VI.selves Lvc od·m· 'N!A!:jS teo. .sci.ev~-hsts DYe leo vvcL"'-S to toLR to wen ctV\ev ClV'-CI to .s hi:lv~ tnei.v wo v~ for tV!e t:~evcef~t of tne vesouvce. The whoLe i.s, i."'-d eed, greotev tn(:lvc the svzw, of tne -pnvts. AV'od th(;lt, i.t seeV'VI.s, tV1-C!Apsv1:LV!tes wnr.t .SeiA Cjn:l "'-':: does so 'NelL. E!:j ?YO'J~c\Lvvg Cf/'(, uV'VI.bveLLr fo v· veser.vcV! 'i!nLLe r.lLOc'/l"'-0 lV'vdivl-duilL str.'.::es to set -pvo~vC'w, -pv[ovLnes, .sw c,viAv.. t -pvoV'VI.otes {Lex.~bi.l~ ::. tJ (;lvcrl, !A: tne .SO.V'VI.e tt.w,e, s-p~ri.:ecl cco'!Jevr. : ~O"'- . wLtV! such 9. -posLti.ve o-p-pvoDc h IAV'-d. oLi.cvv­ .,A.tV'-7- of (eSDuvces fvow, vi.vgLvc~Cl, to fv\Lssi.ssL-p-pL, to 1 ex.V!s, tV.e cob~o effovt Ls. sure to V'VI.!ARe grwt stvi.cte.s. 1 Copy of Page 1.max DR. L. DONELSON WRIGHT Dean and Director Virginia Institute of Marine Science School of Marine Science MARINi£ RESOURCE The College of William and Mary DR. WILLIAM RICKARDS Director Virginia Sea Grant College Program BULLETIN DR. WILLIAM D. DUPAUL Director Marine Advisory Program Volume 32 · Number 1 • Spring 2000 SALLY H. MILLS CONTENTS Editor and Graphic Designer All photographs and illustrations within are FEATURES copyrighted. Permission to use art work must be obtained from the originators of the art A Cobia By Any Other Name. .. 2 work. Art on cover by Duane Raver; inside cover and p age 1 I by Kent Forrest; page 16 by Susanna Musick. Maps on pgs. 2 and 13 by Cobia Diet 11 Kay Stubblefield; on page 15 by Jason Romine. Graphs on pgs. 3, 7, 10 by John Olney, Sr; pg. 11 by Mike Arendt. Photograph on pg. 4 by Tagging Efforts Provide Insight 12 Todd Mathes; on pgs. 7, 17-19 by Charlie Petrocci; page 8, by Sharon Miller; page 14 by Cobia in the Bay: A Moving Target? 14 John Olney, Jr.; others by Sally Mills. byjohn Olne~jr. The Virginia Marine Resource Bulletin is a publication of the Marine Advisory Program Th e Old Fish Dock 16 of the Virginia Sea Grant College Program, which is administered by the Virginia Gradu­ by Charlie Petrocci ate Marine Science Consortium with mem­ bers at the College of William and Mary, the Old Dominion University, the University of Virginia, and the Virginia Polytechnic Insti­ OUTREACH & ANNOUNCEMENTS 20 tute and State University. Subscriptions are available without charge upon writteR re­ quest. Comments and questions abou.i the Bulletin may be directed to the editor at (804) NATURALIST'S CORNER 2 1 684-716 7, or bye-mail to [email protected]. The Bulletin is intended as an open forum for ideas. The views expressed do not imply en­ dorsement, nor do they necessarily reflect the official position of Sea Grant of the Virginia Institute of Marine Science. Sea Grant is a partnership of university, government, and industry focusing on marine research, edu­ cation, and advisory service. Nationally, Sea WILLIAM& MARY Grant began in 1966 with passage of the Sea Grant Program and College Act. ~ This work is the result ofresearch supported in part Smlifu.t VIRGINIA INSTITUTE OF MARINE SCIENCE by the NOAA Office ofSe a Grant, U.S. Departmellf Virginia SCHOOL OF MARINE SCIENCE ofCommerce, under Grant No. NA56RGO 14/to the Virginia Graduate Marine Science Consortium and the Virginia Sea Grant College Program. Copy of Page 1.max A Cobia B~ An~ Otber Name ... By Sally Mills Few fish elicit such animated the International Game Fish As­ its along the U.S. East Coast or reactions among recreational sociation was founded. According about the status of cobia stocks anglers as mention of the elusive to those records, the largest re­ in the Atlantic and Gulf of cobia. Known here in the states corded fish was caught in Shark Mexico. Ongoing research funded as crab-eater, lemonfish, and ling, Bay, Australia in 1985, and by Sea Grant and VIMS contin­ across the globe cobia (Racby­ weighed 135 lbs., 9 oz.