Maximum size of Atlantic mackerel (Scomber scombrus) and Atlantic chub mackerel (Scomber colias) in the Northeast Atlantic

2012·0.59 MB·English

by  Navarro, M R

Maximum size of Atlantic mackerel (Scomber scombrus) and
Atlantic chub mackerel (Scomber colias) in the Northeast Atlantic
by
María Rosario NavaRRo* (1), Begoña villaMoR (1), Sigmund Myklevoll (2),
Juan Gil (3), Pablo aBauNza (1) & Jesús CaNouRa (3)
RÉSUMÉ. - Taille maximale du maquereau commun (Scomber and it has a high social and economic value for all the european
scombrus) et du maquereau blanc (Scomber colias) du nord-est coastal countries (villamor, 2008). Therefore, many international
atlantique. organizations currently have active plans for evaluating and man-
aging it (iCeS, 2009).
Cette étude présente des données sur la taille maximale du
atlantic chub mackerel is also an abundant middle-sized
maquereau commun capturé dans différentes zones de l’océan
atlantique nord, ainsi que celle du maquereau blanc dans le golfe pelagic fish. It has a wide distribution in the eastern Atlantic from
the Canary and azores islands to the Bay of Biscay. atlantic chub
de Cadix, espagne. un spécimen de maquereau commun du nord-
est atlantique (Scomber scombrus linnaeus, 1758), a été capturé mackerel is not a target species of the Spanish fleet operating in
dans le sud du golfe de Gascogne, en 2009. Sa longueur totale de the iCeS area; however, the landings of this species have shown an
59 cm et son poids de 1,9 kg représentent la taille et le poids maxi- increasing trend since 1999 (iCeS, 2009).
mum pour cette espèce enregistrés dans cette région. les données The aim of this paper is to present data on the maximum
recueillies pour 19 spécimens de grande taille en mer de Norvège observed length, weight and age of the atlantic mackerels caught
depuis 1980 indiquent une taille maximale de 70 cm et un poids on the Spanish and Norwegian coasts and the atlantic chub mack-
maximum de 3,2 kg. Cette information montre également que la
erel caught on the Spanish coast.
taille du maquereau commun tend à diminuer, certainement en rai-
son de la pression de pêche. les spécimens capturés récemment
(2000-2005) ont une taille comprise entre 50 et 55 cm, comparée
à la taille maximale de 70 cm des années précédentes. en 2007, un MATERIAL AND METHODS
spécimen de maquereau blanc (Scomber scolias Gmelin, 1789) a
été capturé dans le golfe de Cadix. Sa longueur totale de 65 cm et a specimen of atlantic chub mackerel was caught at the end of
son poids de 2,9 kg représentent la taille et le poids maximum pour July 2007 by a commercial longline in the Gulf of Cadiz (35º58’N;
cette espèce. le maquereau commun du nord-est atlantique et le 6º15’W; 88 m depth). it was stored frozen and sent to the Spanish
maquereau blanc capturés sur les côtes espagnoles étaient âgés de institute of oceanography (ieo). an atlantic mackerel specimen
20 ans (otolithométrie), ce qui représente la plus longue longévité
was caught on 13 March 2009 by a commercial gillnet vessel in the
répertoriée pour ces deux espèces dans cette région.
Bay of Biscay (43º29’N; 4º46’W; 110 m depth) and was sent fresh
key words. - Scombridae - Scomber scombrus - Scomber colias - to the ieo. Biological sampling data were taken. otoliths were
Northeast atlantic - Maximum length - Maximum weight - Maxi- removed and stored for a later reading. Both specimens were stored
mum age. frozen at the ieo [ieo-ST-e-0701 (S. colias specimen) and ieo-
ST-C-0901 (S. scomber specimen)].
The total and fork lengths of the two specimens were meas-
Maximum length, weight and age are important parameters ured to the nearest mm. Total and eviscerated weights were deter-
used in life history studies and fishery science. These measure- mined to the nearest 1 g, and the organs were weighed to the near-
ments are applied directly or indirectly in most stock assessment est 0.01 g. Sex and maturity stage were determined according to
models (iCeS, 2009). Therefore, it is important to regularly update the external appearance of the gonad based on the Walsh Maturity
the maximum size of commercially important species. key (Walsh et al., 1990) and following the recommendations of the
atlantic mackerel Scomber scombrus (linnaeus, 1758) and Workshop of Mackerel Maturity (iCeS, 2007).
atlantic chub mackerel Scomber colias (Gmelin, 1789) are the two The institute of Marine Research, Bergen, Norway, has been
members of the genus Scomber inhabiting northwestern european collecting data on large atlantic mackerels caught in Norwegian
seas (Collette, 2003). Their distribution coincides in the northeast waters from reports in newspapers and magazines as well as fish
atlantic; however, S. colias also inhabits waters further south. reported or sent to the institute since 1980. Currently there is infor-
atlantic mackerel is an abundant middle-sized pelagic fish, mation on a total of 19 individuals. until 2001, only length and
which is intensely exploited in the North atlantic (Csirke, 1995). weight of the specimens were recorded (a total of 15); after this
The northeast atlantic stock is abundant and distributed from date, data on sex and maturity stage as well as age (last four speci-
the south of the iberian Peninsula to the north of Norway. it is an mens) were also collected. Total length was measured to the nearest
important target of the traditional fishery in the northeast Atlantic, cm and total weight was measured to the nearest 0.1 kg in some
(1) instituto español de oceanografía (ieo), Promontorio San Martín S/N, 39004 Santander, Spain. [[email protected]]
[[email protected]]
(2) Havforskningsinstituttet, Po Box 1870 Nordnes, 5817 Bergen, Norway. [[email protected]]
(3) instituto español de oceanografía (ieo), Puerto Pesquero, Muelle de levante S/N, 11006 Cádiz, Spain. [[email protected]]
[[email protected]]
* Corresponding author [[email protected]]
Cybium 2012, 36(2): 406-408.
Navarro et al. Maximum size of Atlantic mackerel and Atlantic chub mackerel
cases and to the nearest 0.001 kg in other cases.
y Sex and maturity stage were determined based on
obably in weight. it is most likel ageSource –Commercial catch 18Commercial catch –Reported by telephone –From newspaper –Commercial catch –From newspaper –From newspaper –From newspaper –Commercial catch –From newspaper –Commercial catch –Commercial catch –From newspaper –From newspaper –From newspaper 14Commercial catch 15Commercial catch 13Commercial catch 13Commercial catch 20Commercial catch 20Commercial catch ttiasutdh.hhcciseefeeoce.f y opdebNea rre yxhodfeg taownorieevnwrtbri genastswe h heaagtta orla ilr vssaap eatii nnehflpmna tepegm(sii leccs lmtaaat iuhcetrgreceu hdantsi rhnsu oteilraotcb,iduy ggde1 c mih s9tttodocttu9aafe.a r 7 clstTlte e;hckho, h r Meeet(aieoir blg aCleatseihorltaedt thonlomi Ssanuiatn ,nesodgu ,2 tlh in caii2C0 dtcrct00hieeh ct07smreeoS 7 )yrabr. a)i( d e.amch1 ic ka9nwiavec9guerre5 sotre )oeea-l,
pr
nt, ** RESULTS AND DISCUSSION
must be a mispri Maturity – – – – – – – – – – – – – – – vii - Spent** vii - Spent** vii - Spent** vii - Spent** late ripening* vi - Spent*** cshaouwgTThnhht ee ion mrn tea astbxhulielemt sSiu. pomaf nktihnseoh w aannna dtlo yNtsaoils rl weonfeg gtthihae ni ns cptoheaecs iltmiste earnraes-
There able. iii - tmuurem f otort aalt wlaenitgihc tm isa 3c kkegr (eMl iusu 6s0 a ncdm N ainedls ethne, 1m9a9x9i)-.
years). * Not avail Sex – – – – – – – – – – – – – – – Female Female Female Female Female Female wmTheae cc kmaenar xesilem eis ui mn5 4 tka cnbmolew (inM, taoatrtlatailn nlseti,nc 1g ct9hh9 uf6ob)r . m aHatolcawkneetirvcee lcr hc, uaabns
ex, maturity and age (et alWalsh ., 1990). – Tl (cm)W (k) 58.52.300 63.02.500 61.5 2.200 63.02.600 70.03.000 65.02.435 60.02.200 68.03.200 63.02.880 54.0*3.4* 55.02.500 53.01.347 -1.980 -2.010 55.01.800 50.01.428 51.01.382 52.01.704 53.01.667 59.2 1.953 65.0 2.886 awscdNrepoaeotaetnlicraacgswh nihiie tndeatis g ec otlci raefameab nn3ndlga .e Sc2tgp hke irrk aoeoeag rwfvloe.s i6f lToom 5ac hus aoecthsnlrsmlaoe eynrw e tastthia npoctacdhe nhmbc aa itetaam hw t ctlheekehe ennleie egsrgl n aehmptrlghtr g atr oooheexvffrp i ae 2mo7sn .tir09duhzt e aemckwdt mgi .tenm, h Ti aagetonnhhshsddeeett
W), sale ( a rinec eeanrtlliye r( 2y0e0a0r-s2. 0T0h5i)s idse 5c5re camse c ionm tphaer leadr gtoe r7 s0i zcems
Tl), weight (sh maturity sc iCeS are – iva iva iva iiia iiia - iiia iiia iiia iva iva iiia iva iva – – – – viiice iXaS ce(cssooitaun aslcdtet, l bwa1ne9ht 9idicc7uh )me ih satao ctd hkfi eeas r shleepilnn ergcgeit pmhpo roeretnfse s5dcu9 air unecg .mm hI tnoa or nfenda rc taeht c,ew et hSneeitpg yalhnaetrai sgorhs-f
h, location, total length (e (iCeS, 2007). *** Wal latitudelongitude –– 60º00’N 5º30’e 61º35’N 4º20’e 61º51’N 4º47’e 62º55’N 5º25’e 58º20’N 11º10’e -- 58º40’N 9º20’e 58º25’N 8º50’e 59º50’N 10º30’e 58º15’N 3º30’e 60º15’N 3º30’e 58º55’N 10º00’e 60º42’N 4º55’e 59º35’N 5º06’e –– –– –– –– 43º29’N4º46’W 35º58’N 6º15’W lew5ty1ihr.0eth9eeea ot l rrkos Tassopg te h5unoe e(o3r lcTt det Nihcoa mi(emblosTi e .rtS1 ahwnti8pbo)s e.c .ta yw aganieli)uei aa.lsrg enrThehsn sh rtcgope eotolea hdamncd) si ( amt(tw4h lx(4aeeeivs mrn ctSeis mlfu pl1ooma)a2uf mnf - raok1i ossrnt5pr lhao a,ey wnc2cteltoi0anaimac0nr a sse4tm tgino)c ewa.s l m cd,Hia knf,as roe a octwr2nhkme0de--l
atccal ever, there has been a mackerel caught in northern
uding date of cgian maturity s Date 1968-1969 Jul. 1980 1981-1982 Jun. 1983 Feb. 1984 Nov. 1985 oct. 1988 Nov. 1991 oct. 1992 Jun. 1997 Sep. 2000 oct. 2001 Nov. 2001 oct. 2002 aug. 2004 autum 2005 autum 2005 autum 2005 autum 2005 Mar. 2009 Jul. 2007 eTca1og2uhae rey so ratepe awectrl oatashr nsdoa t2elti cd0dw c(yia5hnseu4 at2b hrc3s emm y olea)ilt dace(rk Mr(seaT ortaauelrbdlrt i.e c( n i4afs)ou8,, gr a1c hcnm9thd9 )ou 6 t(nbh)i .Cetm h TemeahS caeS,kx rp1eeia9mrfneo9uli5r smei)hs,.
nclwe these specimens show that these species can reach
cal sampling data ih of 54 cm. ** Nor Species S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrusa S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. scombrus S. colias ttnotohoilt ed ek7 elmn0yro acahwxmgai evtm shteo ue tbth maaealge nanle eg tenohevgfo. etstihnhte )e wo,c lloaodasnuer gsrlt.dihed eshety arm evwdeao cpbukreleederv neai lolismnu (tsoeflrsryoet mtsdotei n6bfig0e-
Table i. - Biologi2.4 kg for a lengt Norwegian Se Spanish Coast ABttahhnaceedtk a cSpnlrplaeoaarww,tn i rclioeesufshd lp“a gcMereolcmyaat instvehtone.e lltWoiysr ,. ee s fl- k oa MTirlps hippolerel oowrasnvui aisMtdrhhiio aontnr”ogsu a ttewhnhlad eoln u“siklgpSd eeCa rlcnlioidakm rraeaane t dnMDo s aut ahfernraíñoganame”ksl,
Cybium 2012, 36(2) 407
Maximum size of Atlantic mackerel and Atlantic chub mackerel Navarro et al.
and Jose Ramon Gutierrez for helping in sampling these specimens, and MaRTiNS M.M., 1996. - New biological data on growth and matu-
amaia viloria for helping with the translation of the summary to French. rity of Spanish Mackerel (Scomber japonicas) off the Portu-
We are grateful to anne-liv Johnsen, Helga a. Gill, eilert Hermansen and guese coast (iCeS Division iXa). iCeS CM 1996/H: 23: 17.
Jan de lange for the otolith readings of the Norwegian specimens. Finally,
we wish to thank Juan Carlos arronte and Francisco Baldó for their biblio- MaRTiNS M.M., 2007. - Growth variability in atlantic mackerel
graphic help. (Scomber scombrus) and Spanish mackerel (Scomber japoni-
cus) off Portugal. ICES J. Mar. Sci., 64: 1785-1790.
MuuS B.J. & NielSeN J.G., 1999. - Sea Fish. Scandinavian Fish-
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