Upload
phyphi-lovito
View
220
Download
0
Embed Size (px)
Citation preview
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
1/8
Fisheries Research 125126 (2012) 190197ContentslistsavailableatSciVerseScienceDirect
FisheriesResearchjournal homepage:www.elsevier.com/locate/fishres
ThereproductivecycleofOctopuscyaneainsouthwestMadagascarandimplicationsforfisheriesmanagementD.Raberinarya,b,1,S.Benbowa,aBlueVentures Conservation, Level 2Annex, Omnibus Business Centre, 39-41North Road, LondonN7 9DP, UKbInstitut Halieutique et des Sciences Marines,Avenue de France, Mahavatse I, Toliara 601, Madagascara r t i c l e i n f o a b s t r a c tArticle history: TheOctopuscyaneafisheryisthemosteconomicallyimportantfisheryinsouthwestMadagascar.Grow-Received 25August 2011 ingconcernsoverthesustainability ofexploitation havepromotedanumberofconservation effortstoReceived in revised form 21 February 2012Accepted 22 February 2012 improvemanagement ofthefishery.Weanalyseoneyearofcatchdatatoidentifyseasonalvariations
insexualmaturityandkeyreproductive periodsofthespecies, usingmicroscopic analysisofgonadtis-Keywords:Octopus cyaneaFisheries managementReproductive cycleRecruitment
suestovalidatefieldassessmentsofmaturity.Datashowseasonalvariability inmaturityandsizeatfirstmaturityforbothsexes,aswellastemporalchangesinthesexratioofthespecies.Maturityoccurredataminimummeanweightof2246gforfemalesand643gformales.Aclearrelationshipbetweengonadweightandtotalweightinmaleoctopusindicatesthattotalweightcanbeusedasaproxyforsexualmaturityinmales.Conversely,femalesshowhighvariability inweightatfirstmaturityandno
Depth-refuge clearrelationship betweentotalweightandmaturitystage.Fullysexually maturefemaleswereverySouthwest Madagascar rare,constituting lessthan1%ofthetotalsample.Wehypothesise thattheartisanalfisherymaynotbe
currentlyexploitingmaturefemaleindividualsbecausefemalesretreattodeeperwaterspriortorepro-duction,thusremainingbeyondthereachofthefishery.AnabundanceofjuvenileindividualsinthecatchfromJune,andagainfromOctobertoNovember,indicatesrecruitmentpeaksatthesetwotimes.Inrecentyears,managementofthisspeciesinsouthwestMadagascarhasfocusedonshort-termclosurestofishingwithinspecifictidalreefflatareas.Identificationofthekeyphasesofthereproductive cycleofO.cyaneainsouthwestMadagascar mayprovidemanagerswithbiologicalevidencetosupportseasonalclosuresdesignedtoprotectkeylifestagesofthespecies.
2012ElsevierB.V.Allrightsreserved.1. Introduction Exploitation ofoctopusstockshasincreasedrapidlysince2003
asaresultofexpandingcommercialisationofMadagascarsocto-The reef octopus Octopus cyanea is thought to be the most pusfishery,responsible for6070%ofthevalueofmarineresources
commonoctopusspeciesonreefsworldwideandisthedominant purchasedbycollection andexportcompaniesinsouthwestMada-octopusinmanycoralreefhabitatsintheIndianOceanregion(Van gascar(LHaridon,2006).Inrecentyearslocalcommunities haveHeukelem,1983;RoperandHochberg,1988).Howeverdespiteits expressedconcernsabouttheover-exploitation ofoctopusstocksabundance,researchintothebiologyofthespecieshasbeenlimited andassociateddirectreefdamage,bothofwhichthreaten thetra-toafewkeystudies(GuardandMgaya,2002;VanHeukelem,1973, ditionallivelihoods ofthelocalVezocommunitiesthatinhabitthe1983;Caverivire,2006).Thespeciesisofconsiderablecommercial southwestcoastofMadagascar(Langley,2006;Epps,2007;Astuti,valuetoartisanalfisheriesincoastalEastAfricaandWesternIndian 1995).Fishingpressureisdepth-limited bythenatureoftheglean-Oceanislandstates,wherecatchesaregenerallysoldthrougha ingandspearfishingtechniques andoctopusaregenerally onlynetworkofcollectorstoreachnationalandinternationalexport exploitedonreefflatsinshallowintertidal andsubtidalzones.markets(LHaridon,2006),andtherearefewalternativestomarine Effectively managing the fishery requires a thorough under-resourceextraction,asthearidclimatepreventsanyformoflarge- standingofO.cyaneareproductivebiologysothatmanagementscaleagriculture. measurescanbetargetedatkeyperiodsinthelifecycletoenhance
effectiveness.Inparticular,temporaryclosuresofindividualfishingsiteshavebeentrialledinsouthwestMadagascarsince2004andaretimedtocoincidewiththeoreticalrecruitmentandspawning
Corresponding author. Tel.: +261 34 29 100 18.E-mail addresses: [email protected] (D.Raberinary),
[email protected] (S. Benbow).1Tel.: +44 020 7359 1287.
peaks.Todate,thetimingsoftheseclosureshavelargelybeenbasedonanecdotalreportsfromfishersandscientifictheories.Quan-titativedatatosupportthetimingoftheseclosures willgreatlycontributetocontinued managementofthefishery.
0165-7836/$ see front matter 2012 Elsevier B.V.All rights reserved.doi:10.1016/j.fishres.2012.02.025
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
2/8
D.Raberinary, S. Benbow/ Fisheries Research 125126 (2012) 190197 191O.cyaneaaredioeceousandfemaleslaybetween150,000and
700,000eggsinasingleclutch(Caverivire,2006;VanHeukelem,1973).Maturefemaleindividualsoftenmigratefromshallowreefflats into deeper subtidal areas for spawning (Oosthuizen andSmale,2003;SmaleandBuchan,1981;Whitakeretal.,1991).Uponhatching,planktoniclarvaemoveintothewatercolumnforonetotwomonths,anddispersalisthoughttobewiderangingwithlar-vaetravellinguptoseveralhundredkilometresinoceancurrents(Murphyetal.,2002;Casuetal.,2002).Thusitislikelythatspawn-ingfemalescontributetothemaintenanceandreplenishmentofstocksataregionallevel,notsimplyinthevicinityofthespawn-inglocality.Priorstudiesofthereproductive cycleofO.cyaneaintheIndianOceanarelimited.ReproductionofO.cyaneahasbeendocumentedtooccurthroughouttheyearinbothTanzaniaandMadagascarwithreproductivepeaksinJuneandDecember(GuardandMgaya,2002;Caverivire,2006)suggestingthisspeciesutilisesan intermittent spawning strategy occurring over an extendedperiodoftimeasdescribedbyRochaetal.(2001).
Thisstudypresentsdatafrom12monthsofmonitoringpat-ternsofsexualmaturityandrecruitmentofO.cyaneafromfisherylandingsinsouthwestMadagascartoprovideinsightintotherepro-ductivepatternsofthespeciesinthisregion,withaviewtoadvisingmanagers on recommending timings for temporary fishery clo-sures.2. Materialsandmethods2.1. Studyarea
ThestudyareaislocatedintheMozambique Channelonthesouthwest coastofMadagascar,approximately 200km north oftheregionalcityofToliara(Fig.1).Octopuscatchdataoriginatesfrom fishers in villages along approximate 30km of coastlinefromAmpasilava in the south toAndragnombala in the north(Fig.1).Withinthisregion,octopusfisherspredominantlytargetthereefflatalongthenearshorefringingreefs,theshallowlagoonalreefflatsandtheoffshorebarrierreefs.Fishersselltheircatchesto one of a number of buyers representing seafood collectioncompanies.2.2. Samplingmethods
SamplingwasconductedfromFebruary2005toFebruary2006inthevillageofAndavadoaka.Datawerecollectedeverydaythatoctopuseswerelandedinthevillage,andfisherssurveyedwereselectedthroughhaphazard,conveniencesamplingbycommunitydatacollectorswhentheyarrivedatthelandingcollectionpoint.Itwasnotpossibletosamplealloctopusescaughtbyallfishers.Within2hoflandingthefollowinginformationwasrecordedforeachsampledoctopus:octopusweight(includinggonads),weightandlengthofextractedgonads,octopussex,andin-fieldvisualassessmentofgonadmaturity.Forarandomlyselectedsubsetofindividuals,totaloctopuslengthanddorsalmantlelengthwererecordedforonedayperspringtide.
Octopusweightwasmeasuredusingaspringbalancegradu-atedin50gintervalstoamaximumof4kg,andgonadweightwasmeasuredusinganelectronicscaleaccurateto1g.Sexwasdeter-minedbyidentificationoftheheterocotylusandspermatophoricgrooveonthethirdrightarmofmales(Mangold,1983b).Gonadlength,totaloctopuslengthanddorsalmantlelengthweremea-suredusinga1mmgraduatedtapemeasure.Gonadmaturitywasassessedthroughobservationofthemaximumsizeandcolourofthegonadsforbothsexes,thepresenceofawhiteborderatthebeginningoftheoviductglandsinfemales,andtheappearanceofspermatophores inmales(Table1).Gonadswereextractedprior
Fig. 1. Regional map and local area map showing study location, villages and reefareas.torecordingofmeasurementsandfishers,whosellindividuals perunitwetweightofcatch,weregivenasmallfeetocompensateforthereductionintotalweight.
For the randomly selected subset, gonad samples were pre-paredforsecondarylaboratoryassessmentusingBouinsolution,andtreatedwith70%alcoholsolution toremoveresidualstain.Sampleswereviewedusingamicroscopeat100magnification,todeterminenumber,arrangementanddiameterofspermatophores formales,andthemaximumdiameterandlengthofoocytesforTable 1Maturity indices formale and femaleOctopus cyanea.
Maturity stage IdentificationGonadmass Gonad appearance
MalesI Immature
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
3/8
192 D.Raberinary, S. Benbow/ Fisheries Research 125126 (2012) 190197
Fig.2. Monthly gonosomatic index for field sampled O. cyanea. Error bars represent standard error around the monthlymean.females,usinganocularmicrometre.Thesemeasurementswere 100gisgenerallyconsidered tobenewlyrecruited(VanHeukelem,usedtodeterminegonadmaturitystagebasedonthecharacteris- 1983),butindividuals thissmallwererarelycapturedusingtheticsdescribedinTable1. fishingtechniques employedinthisregion.Thereforeforthepur-
NodatawereavailableforJanuary2006duetotheregionalclo- posesofthisanalysisoctopuscaughtweighinglessthan200gweresureoftheoctopusfisheryfrom15thDecemberto1stFebruary, consideredtobenewlyrecruited,sincethesizedifferencebetweenthustheresultsfromFebruary2006maynotreflecttheexpected 100and200gisrepresentedbyapproximately 2weeksofgrowthseasonalfluctuations inoctopusiffishingpressurehadbeenmain- (Caverivire,2006).Thus,theproportion ofthemonthlycatchthattainedduringthatperiod.DataforFebruary2005wereremoved wassmallerthan200gwasconsidered aproxyforoctopusrecruit-fortheseanalyses,becausealowsamplesizereducedthestatistical menttothereef.powerofthesedata. Inordertoassessthesexualmaturityofindividuals inrelationto
Datawerecollectedfromatotalof3253octopuses(1578female, gonaddevelopment,gonosomatic index(GSI)wascalculated using1675male)overthestudyperiod,gatheredfromcatchesderived theformulaGSI=Mo/(MtMo)100,whereMoistheweightoffrom738fishersand28fishingsites.Totaloctopusanddorsalman- theovaryandMtisthetotalwetweightoftheindividual(Guardtlelengthweremeasuredforasub-sample of812(532male,280 andMgaya,2002).Monthlyvariations incalculated gonosomaticfemale)andafurther131(68female,63male)octopuseswere indicesweretestedusingat-testandKruskalWallisnonpara-randomlyselectedforlaboratoryanalysis.Allfield-sampledocto- metricanalysis.puseswerere-assignedamaturitystagebasedonthelaboratory Weightfrequency distributions wereplottedtoshowdistribu-confirmationdrawnfromthesubsample. tionofoctopusweightbysexanddifferences inthemeanwere
testedusingWelchst-test.2.3. Dataanalysesandcalculationofsexratio,biometricandlife-historyparameters 3. Results
Sexratioswerecalculatedforeachmonthandtestedforsignifi-cantfluctuationsfromtheexpected50:50ratiousingPearsonsChiSquaredtest.
Regression analyses were carried out on the random subsetoftheindividualsselectedforlaboratoryanalysistoinvestigatebiometric relationships between a variety ofweight and lengthmeasurements,andtodeterminewhethertotalweightorlength
Secondarylaboratoryassessmentsshowedthatin-fieldassess-mentofmaturitywasbetween72100%accurateforfemalesand48100%formales,dependingonmaturitystage.Overalldiffer-ences between in-field and laboratory maturity estimates weresignificant(t=1.69,df=117,p=
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
4/8
D.Raberinary, S. Benbow/ Fisheries Research 125126 (2012) 190197 193Table 3Biometric relationships for male and female Octopus cyanea (total length (TL), dorsalmantle length (DML), total weight (TW), gonad weight (GW)).
f(x)M r2 p n EquationMaleTL(DML) 0.78 0.000 523 y=7.2824x1.1975 (linear)TW(TL) 0.83 0.000 523 y=0.057x2.2052 (power)TW(DML) 0.87 0.000 523 y=1.858x2.5745 (power)TW(GW) 0.87 0.000 1675 y=78.275x+185.01 (linear)FemaleTL(DML) 0.82 0.000 380 y=7.2756x0.6324 (linear)TW(TL) 0.87 0.000 380 y=0.0379x2.3004 (power)TW(DML) 0.89 0.000 380 y=1.602x2.6364 (power)TW(GW) 0.15 0.000 1578 y=14.422x+770.52 (linear)
furthermaturitystages.ItwasnotpossibletoclassifyfemalesashigherthanstageIIIinthefield.Thematuritystageofmaleswasfrequently overestimated in in-field measurements, with malescommonlyclassedasstageIIwhenlaboratorystudiesshowedtheywereinfactstageI.Itwasnotpossibletounderestimate stageI,oroverestimatestageIIIindividualsastheserepresentthelowestandhigheststageswhichcanbeidentifiedinthefield,sothesevaluesarerecordedasnotapplicable(n/a)(Table2).
Wefoundstrongcorrelationsbetweentotallength(TL),dor-salmantlelength(DML)andtotalweight(TM)forbothfemalesandmales(Table3).Similarly,gonadweight(GM)inmaleswasalsostronglycorrelatedtototalweight(r2=0.87).Therelationshipbetweentotalweightandgonadweightwasverymuchweakerforfemales(r2=0.15).
The gonosomatic index (GSI) generally showed very littlevariation throughout the study period for females (range=0.23,variance=0.004)withtheexceptionofadistinctpeakinSeptember(Fig. 2).This peakwas very slightly significantwhen comparedwith grouped samples from all other months (t=1.79, p=0.04).In contrast, theGSI formales varied more throughout the year(range=0.38,variance=0.017)andbetweenmonthvariationwasstatisticallysignificant(X2=93.57,df=9,p=
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
5/8
194 D.Raberinary, S. Benbow/ Fisheries Research 125126 (2012) 190197
Fig.4. Weight distributions for male and female octopuses sampled.Theresultsshowedtwosignificantpeaksinrecruitment,whena
greaternumberofindividualsweighinglessthan200gwerecaught(females:t=3.06,p=
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
6/8
D.Raberinary, S. Benbow/ Fisheries Research 125126 (2012) 190197 195
Fig. 6. Number and percentage change in sequential stages of maturity (assessed in the field) of male octopuses during the 12 months of sampling (total n=1677). Noindividuals are recorded for January 2006 due to the fishery closure during this time.
Fig.7. Numberandpercentage of individualsatdifferentstages ofmaturity (basedon fieldobservations,verified through laboratory subset)of female octopusesduring the12 months of sampling (total n=1581).
We found that 50% maturity of male and female octopusesoccurredat643gand2246grespectively.Thisissimilartofind-ingsforO.vulgarisinSpain(903gand1788g;Oteroetal.,2007)butmuchhigherthanpreviousresearchonO.cyaneainTanzania(320gand600g;GuardandMgaya,2002),indicatingthatthevastmajor-ityoffemaleoctopusescaughtinAndavadoakasartisanalfisheryarelikelytobeimmature.Just8%(n=130)offemaleindividualswereheavierthan2246gwhereas67%(n=1123)ofmalescaughtwereheavierthanthe643gaveragesizeatfirstmaturity.
Fig.8. Monthly variation in O. cyanea recruitment index (percentage of total catch
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
7/8
7/29/2019 1-s2.0-S0165783612001051-main BUDIMAN
8/8
D.Raberinary, S. Benbow/ Fisheries Research 125126 (2012) 190197 197Katsanevakis, S.,Verriopoulos, G., 2006. Seasonal population dynamics of Octopus
vulgaris in the eastern Mediterranean. Journal of Marine Science 63, 151160.Khallahi, O.M.F., 2001. Etude de la gamtogense chez le poulpe Octopus vul-
garis (Cuvier, 1797). Bulletin Scientifique du Centre National de RechercheOcanographiques et des Pches vol. XXVIII 8, 4553.
Langley, J., 2006. Vezo knowledge: traditional ecological knowledge inAndavadoaka, southwestMadagascar.BlueVenturesConservationReport,p.73.http://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdf.
Leite,T.,Haimovici,M.,Mather,M.,LinsOliveira,J.E.,2009.Habitat,distribution,andabundance of the commercial octopus (Octopus insularis) in a tropical oceanicisland, Brazil: information for management of an artisanal fishery inside amarine protected area. Fisheries Research 98, 8591.Leporati,S.,Pecl,G.T.,Semmens,J.M.,2007.Cephalopodhatchlinggrowth:theeffectsof initial size and seasonal temperatures. Marine Biology 151, 13751383.
LHaridon, L., 2006. Evolution de la collecte de poulpe sur la cte Sud-Ouest deMadagascar: lments de reflexion pour une meilleure gestion des ressources.Blue Ventures Conservation Report. http://blueventures.org/downloads/bv- research-report-2006-haridon-copefrito-report fr.pdf.
Mangold, K., 1983a. Food, feeding and growth in cephalopods. Memoirs of theNational Museum ofVictoria 44, 8193.
Mangold, K., 1983b. Octopus vulgaris. In: Boyle, P.R. (Ed.), Cephalopod Life Cycles,vol. I.Academic Press, London, pp. 335364.
Mangold, K., Boletzky, S. von., 1973.New data on reproductive biology and growthof Octopus vulgaris. Marine Biology 19, 712.
Murphy, J.M., Balguerias, E., Key, L.N., Boyle, P.R., 2002. Microsatellite DNA markersdiscriminate between two Octopus vulgaris (cephalopoda: octopoda) fisheriesalong the northwestAfrican coast. Bulletin of Marine Science 7, 545553.
Navarte, M., Gonzalez, R., Fernandez, M., 2006. Comparison of Tehuelche octopus(Octopus tehuelchus) abundance between an open-access fishing ground and a
marine protected area: evidence from a direct development species. FisheriesResearch79, 112119.
Oosthuizen, A., Smale, M.J., 2003. Population biology of Octopus vulgaris on thetemperate south-eastern coast of SouthAfrica. Journal of the MarineBiologicalAssociation of theUnited Kingdom83, 7.
Otero,J.,Gonzlez,A.F.,Sieiro,P.M.,Guerra,A.,2007.Reproductivecycleandenergyallocation ofOctopusvulgaris inGalicianwaters,NEAtlantic.FisheriesResearch85, 122129.
Perry, R., Walters, C.J., Boutillier, J.A., 1999. A framework for providing scientificadvice for the management of new and developing fisheries. Reviews in FishBiology and Fisheries9, 125150.
Rocha, F., Guerra, A., Gonzlez, A., 2001. A review of reproductive strategies incephalopods. Biological Reviews 76, 291304.Roper,C.F.E.,Hochberg, F.G., 1988.Behaviour and systematics ofCephalopods from
Lizard Island, Australia, based on colour and body patterns. Malacalogia 29,153193.
Sanchez, P., Obarti, R., 1993. The biology and fishery of Octopus vulgariscaught with clay pots on the Spanish Mediterranean coast. In: Okutani, T.(Ed.), Recent Advances in Fisheries Biology. Tokai University Press, Tokyo,pp. 477487.
Smale,M.J.,Buchan,P.R.,1981.BiologyofOctopusvulgarisofftheeastcoastofSouthAfrica. MarineBiology 65, 112.
Van Heukelem, W.F., 1973. Growth and life-span of Octopus cyanea (Mollusca:Cephalopoda). JournalofZoology 169, 299315.
Van Heukelem, W.F., 1983. Octopus cyanea. In: Boyle, P.R. (Ed.), Cephalopod LifeCyclesVolume I.SpeciesAccounts.Academic Press,London, pp. 267276.
Whitaker, J.D., Delancey, L.B., Jenkins, J.E., 1991.Aspects of the biology and fisherypotential for Octopus vulgaris off the coast of South Carolina. Bulletin of MarineScience 49, 482493.
http://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-haridon-copefrito-report_fr.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdfhttp://blueventures.org/downloads/bv-research-report-2006-langley-tek.pdf