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ENVIRONMENTAL VARIABILITY AND LARVAL SUPPLY TO WILD AND CULTURED SHELLFISH POPULATIONS

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dc.creatorGONZALO SEBASTIÁN SALDÍAS YAU
dc.date2021
dc.date.accessioned2025-01-10T15:26:54Z
dc.date.available2025-01-10T15:26:54Z
dc.date.issued2021
dc.description.abstractCOASTAL UPWELLING ECOSYSTEMS SUPPORT SOME OF THE MOST PRODUCTIVE FISHERIES OF THE PLANET TOGETHER WITH A LARGE SHELLFISH AQUACULTURE SECTOR THAT DEPENDS ON OCEANOGRAPHIC PROCESSES TO DELIVER PLANKTONIC LARVAE TO REPLENISH AND FEED THE FARMED STOCK. COASTAL SHELLFISH AQUACULTURE OPERATIONS IN CHILE AND PERÚ HAVE EXPERIENCED LARGE INTERANNUAL FLUCTUATIONS IN LARVAL SUPPLY OVER THE PAST DECADE, YET THE DRIVERS OF SUCH VARIABILITY REMAIN UNIDENTIFIED. WE FOCUSED ON THE EFFECTS OF ENVIRONMENTAL VARIABILITY ON LARVAL SUPPLY OF THE FARMED PERUVIAN BAY SCALLOP ARGOPECTEN PURPURATUS IN A BAY IN NORTHERN CHILE (TONGOY BAY, 30?S) THAT ACCOUNTS FOR OVER 90% OF COUNTRYWIDE LANDINGS. WE EXAMINED THE HYPOTHESIS THAT THE ENVIRONMENTAL PROCESSES GOVERNING LARVAL SUPPLY WERE SHARED WITH WILD BENTHIC INVERTEBRATES WITH PLANKTONIC LARVAL DEVELOPMENT AND COMPARED TIME SERIES OF LARVAL ABUNDANCE FOR THE SCALLOP WITH LARVAL SUPPLY RATES TO BENTHIC POPULATIONS OF TWO WELL-STUDIED WILD INTERTIDAL SPECIES: THE CHTHAMALID BARNACLE JEHLIUS CIRRATUS AND THE PURPLE MUSSEL PERUMYTILUS PURPURATUS. TO THIS END, WE EXAMINED THE CROSS-CORRELATION OF LARVAL SUPPLY TO ENVIRONMENTAL VARIABILITY USING MODIS SATELLITE FIELDS OF SEA SURFACE TEMPERATURE (SST) CHLOROPHYLL-A CONCENTRATION (CHL-A) AND FLUORESCENCE LINE HEIGHT (NFLH), TOGETHER WITH THREE CLIMATE INDICES RELEVANT FOR THE SOUTH EAST PACIFIC SECTOR: THE SOUTHERN OSCILLATION INDEX (SOI), THE PACIFIC DECADAL OSCILLATION (PDO) AND THE ANTARCTIC OSCILLATION INDEX (AAO). OUR RESULTS SHOWED THAT OVER THE FIVE-YEAR STUDY PERIOD (2009?2013), PATTERNS OF LARVAL SUPPLY TO THE SCALLOP POPULATION WERE RELATED TO INTER-ANNUAL VARIABILITY IN THE ENVIRONMENTAL PROCESSES AS CAPTURED BY THEIR EMPIRICAL ORTHOGONAL FUNCTIONS (EOFS), LIKELY TO ADULT CONDITION BEFORE SPAWNING. SURPRISINGLY, LARVAL SUPPLY FOR NONE OF THE WILD SPECIES SHOWED A CLEAR ASSOCIATION TO THE EOFS. IN CONTRAST, SCALLOPS AND WILD SPECIES SHOWED SIGNIFICANT ASSOCIATION TO LOWER FREQUENCY CLIMATE
dc.formatapplication/pdf
dc.identifier.doi10.1016/j.aquaculture.2021.737639
dc.identifier.issn1873-5622
dc.identifier.issn0044-8486
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/12061
dc.languagespa
dc.publisherAQUACULTURE
dc.relation.uri10.1016/j.aquaculture.2021.737639
dc.rightsPUBLICADA
dc.titleENVIRONMENTAL VARIABILITY AND LARVAL SUPPLY TO WILD AND CULTURED SHELLFISH POPULATIONS
dc.title.alternativeVARIABILIDAD AMBIENTAL Y SUMINISTRO DE LARVAS A LAS POBLACIONES DE MARISCOS SILVESTRES Y CULTIVADOS
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE FISICA
ubb.SedeCONCEPCIÓN
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