Environmental variability and larval supply to wild and cultured shellfish populations

Simple item page
dc.contributor.authorBroitman, Bernardo R.
dc.contributor.authorLara, Carlos
dc.contributor.authorFlores, Raul P.
dc.contributor.authorSaldias, Gonzalo S.
dc.contributor.authorPinones, Andrea
dc.contributor.authorPinochet, Andre
dc.contributor.authorMejia, Alexander Galan
dc.contributor.authorNavarrete, Sergio A.
dc.date.accessioned2025-01-20T22:01:27Z
dc.date.available2025-01-20T22:01:27Z
dc.date.issued2022
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 Peru 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 circle 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 interannual 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 variability as captured by the SOI and the PDO, but not the AAO. Results suggest that larval supply patterns to Tongoy Bay may be modulated by regional patterns of climatic variability, particularly of tropical origin. Thus, changes in coastal oceanography associated with ongoing changes in global climate could have strong and lasting effects on the supply of seedstock for wild and cultivated species across this eastern boundary coastal system and argue for the establishment of long-term ocean observing and early warning systems along the region.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.aquaculture.2021.737639
dc.identifier.eissn1873-5622
dc.identifier.issn0044-8486
dc.identifier.urihttps://doi.org/10.1016/j.aquaculture.2021.737639
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93833
dc.identifier.wosidWOS:000725456600004
dc.language.isoen
dc.revistaAquaculture
dc.rightsacceso restringido
dc.subjectSea Surface temperature
dc.subjectArgopecten purpuratus
dc.subjectPerumytilus purpuratus
dc.subjectCoastal oceanography
dc.subjectEmpirical orthogonal function
dc.subjectShellfish aquaculture
dc.subjectENSO
dc.subjectPDO
dc.subjectJehlius cirratus
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleEnvironmental variability and larval supply to wild and cultured shellfish populations
dc.typeartículo
dc.volumen548
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas