The Decreasing Availability of Settlement Surfaces Affects the Transition From Larvae to Early Recruitment of the Scallop Argopecten purpuratus Through El Niño and La Niña Episodes

Avendaño, Miguel; Cantillánez, Marcela; Riascos, José M.

doi:10.3389/fmars.2019.00630

Cited by 5 publications

(11 citation statements)

References 28 publications

(38 reference statements)

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“…The settlement of Argopecten purpuratus Lamarck (1819) from hatchery reared larvae, shows similar survival (6.31-24.94%) as observed in other scallops (Avendaño-Herrera et al, 2002). Though no causable effects were discussed for the related rates, for A. purpuratus, a positive correlation between temperature and the high concentration of larvae in water column are significant predictors for most successful survival rates for this species (Avendaño et al, 2019). The settlement rate in Mimachlamys varia Linnaeus (1758) ranging from 17.7 to 32.3% were described (De La Roche et al, 2005), being the best survival of spat found in larger sheltered areas at low luminosity in the inner center with spat attaching one on top of another.…”

Section: Discussionmentioning

confidence: 73%

REMOTE SETTING OF <i>Nodipecten nodosus</i> (Linnaeus 1758) LARVAE

Costa¹,

Manzoni²,

Silva³

et al. 2020

Bol. Inst. Pesca

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The present study aimed to evaluate the growth and survival of Nodipecten nodosus larvae grown in a remote settlement system. Two forms of transport were tested, one in a humid/wet, environment and one submerged in seawater, with a control treatment maintained at the Laboratory of Marine Mollusks (LMM). After transport treatments, individuals were populated simultaneously inside floating boxes directly at sea and in containers under controlled conditions in the Laboratory of the Experimental Center for Mariculture (CEMAR). No statistical differences were observed in larval survival relative to the method of transport in the different experiments. However, statistical differences were observed in evaluation 1 (EVA1) for the survival and growth of larvae transported in submerged seawater and settled in the laboratory. No statistical difference was observed between the control and either wet/humid or submerged treatments in EVA2. The survival values in the control treatment in EVA3 were higher (p<0.05) in relation to the wet and submerged treatments cultivated in the laboratory. It was not possible to observe the presence of pre-seeds in treatments grown at sea. Is possible to transport larvae for 6 hours of travel to be settled in controlled conditions far from their place of origin.

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Section: Discussionmentioning

confidence: 73%

REMOTE SETTING OF <i>Nodipecten nodosus</i> (Linnaeus 1758) LARVAE

Costa¹,

Manzoni²,

Silva³

et al. 2020

Bol. Inst. Pesca

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“…The main cause seems to be genomic abnormalities related to stock origin but could be also associated with environmental contaminations or a sign of disseminated neoplasia disorder 9 , 10 . These events are not exclusive to mussel species and also affect Pectinids 11 – 13 and cockles 14 .…”

Section: Introductionmentioning

confidence: 99%

Long-term study on survival and development of successive generations of Mytilus galloprovincialis cryopreserved larvae

Heres

Troncoso

Paredes

2022

Sci Rep

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Shellfish aquaculture needs the development of new tools for the improvement of good practices avoiding the reliance on natural spat collection to increase production efficiently. The aim of this work was to improve the cryopreservation protocol for Mytilus galloprovincialis larvae described in Paredes et al. (in: Wolkers, Oldenhof (eds) Cryopreservation and freeze-drying protocol, methods in molecular biology, Humana Press, 2021, pp 2180, https://doi.org/10.1007/978-1-0716-0783-1_18). Moreover, the capability of producing adult mussels from cryopreserved 72 h-old D-larvae and potential long-term effects of cryopreservation through progenies were evaluated. The selection of 72-h old D-larvae for cryopreservation yielded 75% of recovery, higher than 50% from trochophores. The best combination was 10% Ethylene–Glycol + 0.4 M Trehalose in Filtered Sea Water (FSW) with cooling at − 1 °C/min and a water bath at 35 °C for thawing. Sucrose (SUC) solutions did not improve larval recovery (p > 0.05). At settlement, 5.26% of cryopreserved F1 larvae survived and over 70% settled. F2 cryopreservation produced 0.15% survival of spat and settlement varied from 35 to 50%. The delay of shell size showed on cryopreserved larvae declined throughout larval rearing without significant differences with controls from settlement point (p > 0.05). Long-term experiments showed that it is possible to obtain adult mussels from cryopreserved larvae and this tool does not compromise the quality of following progenies, neither for cryopreservation nor post-thawing development of them.

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“…For example, retention is favoured by the coastal topography and the occurrence of predominantly south‐westerly winds, which generate a northward‐directed residual current, causing gyre currents of approximately 5 km radius in the eastern sector of the bay, with residence times varying from 4 to 12 days in the summer and from 2 to 24 days in the winter (Cantillánez Silva, Thouzeau & Avendaño, 2007; Avendaño et al, 2008; Avendaño & Cantillánez, 2008). Additionally, the recruitment of A. purpuratus is strongly influenced by temperature variations associated with El Niño and La Niña climatic events (Avendaño, Cantillánez & Riascos, 2019). These processes modify the circulation of water masses and disturb the upwelling of cold water along the coasts of northern Chile (Escribano & Hidalgo, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…For example, coralline algae induce larval settlement in many invertebrate phyla (Dayton et al, 2000). Studies of the benthos of La Rinconada MR have shown that pre‐recruitment seeds of A. purpuratus are attached to the fronds of the red alga Rhodymenia sp., which is the only biological substrate available on the predominantly fine sandy bottom of the reserve and shows substantial seasonal and interannual variation (Cantillánez, 2000; Avendaño, Cantillánez & Thouzeau, 2017; Avendaño, Cantillánez & Riascos, 2019). Trophic models (ECOPATH and ECOSIM) constructed for the benthic ecosystem of the MR have established that A. purpuratus play an important role in the trophic network, as do red algae ( Rhodymenia sp.…”

Section: Introductionmentioning

confidence: 99%

“…Trophic models (ECOPATH and ECOSIM) constructed for the benthic ecosystem of the MR have established that A. purpuratus play an important role in the trophic network, as do red algae ( Rhodymenia sp. ), whose increase in abundance has the potential to double the abundance of A. purpuratus (Ortiz et al, 2009; Ortiz et al, 2010; Avendaño, Cantillánez & Riascos, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Implementation of seed collection programs for the recovery of Argopecten purpuratus populations in the La Rinconada marine reserve (Antofagasta, Chile)

Avendaño

Cantillánez

González

2022

Aquatic Conservation

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‘La Rinconada Marine’ Reserve (MR), Chile was created in 1997 to preserve the genetic stock of the scallop Argopecten purpuratus and eventually to supply seed to areas outside of the reserve and support aquaculture activities. Data from biological and fisheries monitoring of A. purpuratus as well as environmental conditions in the MR are available for the period from 1993 to 2009. The continuous extraction of A. purpuratus from La Rinconada MR in Chile, without a science‐based exploitation plan, has not only decreased the abundance and population structure of the species but has also significantly affected seed settlement in artificial collectors and population recruitment. Therefore, the goals of the MR have not been achieved. This review of biological and fishing studies of A. purpuratus in La Rinconada MR provides a basis for the implementation of a sustainable programme for the natural collection of A. purpuratus seed for population recovery. A. purpuratus recruitment varies substantially between years and is not strongly related to the size of the parental population. Larval collection and recruitment depend on environmental events (El Niño‐Southern Oscillation) and biological substrate availability (Rhodymenia red algae). These factors produce a bentho‐pelagic decoupling between parental abundance, larval production and subsequent recruitment of A. purpuratus that limits stock recovery in the MR. To address the poor population status of A. purpuratus in the MR, recovery of the adult population is needed. Therefore, an assisted collection and recruitment strategy is proposed to increase the population and enable the generation of surplus seed, fulfilling the initial aims of La Rinconada MR.

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The Decreasing Availability of Settlement Surfaces Affects the Transition From Larvae to Early Recruitment of the Scallop Argopecten purpuratus Through El Niño and La Niña Episodes

Cited by 5 publications

References 28 publications

REMOTE SETTING OF <i>Nodipecten nodosus</i> (Linnaeus 1758) LARVAE

REMOTE SETTING OF <i>Nodipecten nodosus</i> (Linnaeus 1758) LARVAE

Long-term study on survival and development of successive generations of Mytilus galloprovincialis cryopreserved larvae

Implementation of seed collection programs for the recovery of Argopecten purpuratus populations in the La Rinconada marine reserve (Antofagasta, Chile)

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