Seasonal effects of the seeding on the growth of Chilean mussel ( Mytilus edulis platensis, d'Orbigny 1846) cultivated in central Chile

Díaz, Christian; Figueroa, Yanina; Sobenes, Catterina

doi:10.1016/j.aquaculture.2014.03.013

Cited by 13 publications

(7 citation statements)

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“…Consequently, these names have been used in ecology and aquaculture-related publications e.g. [ 70 , 71 ]. Based on a comparison of single sequences of their mitogenomes, M. chilensis and M. platensis were placed in the same clade, representing conspecific variants rather than distinct species [ 72 ].…”

Section: Introductionmentioning

confidence: 99%

Single nucleotide polymorphisms in native South American Atlantic coast populations of smooth shelled mussels: hybridization with invasive European Mytilus galloprovincialis

2018

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BackgroundThroughout the world, harvesting of mussels Mytilus spp. is based on the exploitation of natural populations and aquaculture. Aquaculture activities include transfers of spat and live adult mussels between various geographic locations, which may result in large-scale changes in the world distribution of Mytilus taxa. Mytilus taxa are morphologically similar and difficult to distinguish. In spite of much research on taxonomy, evolution and geographic distribution, the native Mytilus taxa of the Southern Hemisphere are poorly understood. Recently, single nucleotide polymorphisms (SNPs) have been used to clarify the taxonomic status of populations of smooth shelled mussels from the Pacific coast of South America. In this paper, we used a set of SNPs to characterize, for the first time, populations of smooth shelled mussels Mytilus from the Atlantic coast of South America.ResultsMytilus spp. samples were collected from eastern South America. Six reference samples from the Northern Hemisphere were used: Mytilus edulis from USA and Northern Ireland, Mytilus trossulus from Canada, and Mytilus galloprovincialis from Spain and Italy. Two other reference samples from the Southern Hemisphere were included: M. galloprovincialis from New Zealand and Mytilus chilensis from Chile. Fifty-five SNPs were successfully genotyped, of which 51 were polymorphic. Population genetic analyses using the STRUCTURE program revealed the clustering of eight populations from Argentina (Mytilus platensis) and the clustering of the sample from Ushuaia with M. chilensis from Chile. All individuals in the Puerto Madryn (Argentina) sample were identified as M. platensis × M. galloprovincialis F2 (88.89%) hybrids, except one that was classified as Mediterranean M. galloprovincialis. No F1 hybrids were observed.ConclusionsWe demonstrate that M. platensis (or Mytilus edulis platensis) and M. chilensis are distinct native taxa in South America, which indicates that the evolutionary histories of Mytilus taxa along the Atlantic and Pacific coasts differ. M. platensis is endangered by hybridization with M. galloprovincialis that was introduced from Europe into the Puerto Madryn area in Argentina, presumably by accidental introduction via ship traffic. We confirm the occurrence of a native M. chilensis population in southern Argentina on the coast of Patagonia.Electronic supplementary materialThe online version of this article (10.1186/s12711-018-0376-z) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Single nucleotide polymorphisms in native South American Atlantic coast populations of smooth shelled mussels: hybridization with invasive European Mytilus galloprovincialis

2018

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“…However, all of the food concentration treatments used by Albentosa et al (2012) [0.50-1.80 mg l −1 particulate organic matter (POM)] were below the lowest treatment concentration (5.50 mg l −1 POM) in the present study, and the short acclimation period (six days) may have only captured an acute response. To this end, the POM range of our study encapsulates the range of POM values along coasts of the eastern Pacific ( Díaz et al, 2014 ; Luna-González et al, 2008 ; Page and Ricard, 1990 ).…”

Section: Discussionmentioning

confidence: 99%

Modulation of digestive physiology and biochemistry inMytilus californianusin response to feeding level acclimation and microhabitat

et al. 2016

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The intertidal mussel Mytilus californianus is a critical foundation species that is exposed to fluctuations in the environment along tidal- and wave-exposure gradients. We investigated feeding and digestion in mussels under laboratory conditions and across environmental gradients in the field. We assessed whether mussels adopt a rate-maximization (higher ingestion and lower assimilation) or a yield-maximization acquisition (lower ingestion and higher assimilation) strategy under laboratory conditions by measuring feeding physiology and digestive enzyme activities. We used digestive enzyme activity to define resource acquisition strategies in laboratory studies, then measured digestive enzyme activities in three microhabitats at the extreme ends of the tidal- and wave-exposure gradients within a stretch of shore (<20 m) projected sea-ward. Our laboratory results indicated that mussels benefit from a high assimilation efficiency when food concentration is low and have a low assimilation efficiency when food concentration is high. Additionally, enzyme activities of carbohydrases amylase, laminarinase and cellulase were elevated when food concentration was high. The protease trypsin, however, did not increase with increasing food concentration. In field conditions, low-shore mussels surprisingly did not have high enzyme activities. Rather, high-shore mussels exhibited higher cellulase activities than low-shore mussels. Similarly, trypsin activity in the high-shore-wave-sheltered microhabitat was higher than that in high-shore-wave-exposed. As expected, mussels experienced increasing thermal stress as a function of reduced submergence from low to high shore and shelter from wave-splash. Our findings suggest that mussels compensate for limited feeding opportunities and thermal stress by modulating digestive enzyme activities.

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“…Global mussel aquaculture involves 9 different species within 2 genera (Mytilus and Perna), in addition to a relatively smaller production of 2 other myti lids in South America (Aulacomya atra and Choro mytilus chorus). For aquaculture of all of these species, juvenile seed-stock (referred to as 'spat') are typically collected either from natural substrata (Alfaro et al 2010, Kamermans & Capelle 2018 or from artificial settlement surfaces deployed in the water column (Pérez Camacho et al 1995, Lauzon-Guay et al 2005, Díaz et al 2014. Despite some advantages of this practice, mainly relating to cost-efficiency, constraints on wild spat supply, or uncertainty in terms of the timing and magnitude of spat availability, can lead to insufficient juveniles to meet industry demand (Jeffs et al 1999, Kamermans et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Forecasting mussel settlement using historical data and boosted regression trees

Atalah¹,

Forrest²

2019

Aquacult. Environ. Interact.

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Many aquaculture sectors internationally, most notably for the cultivation of bivalves, rely almost completely on wild-caught juveniles ('spat') to stock farms, with poor 'catches' representing one the biggest constraints on global production. An example of this practice is green-lipped mussel Perna canaliculus aquaculture in New Zealand, where the industry in the main growing region has been monitoring P. canaliculus settlement for almost 40 yr. This practice involves deploying settlement arrays across the region to guide the places and times to place spatcatching rope. Using a subset of these data spanning 25 yr (1993−2018), we identified regional spatio-temporal patterns of P. canaliculus spat settlement. Boosted regression tree (BRT) models were used to forecast settlement at 2 different sub-regions with consistent high catch yields. BRT models confirmed a strong seasonal influence on settlement, with highest predicted settlement levels coinciding with the main P. canaliculus spawning period (late summer to autumn). Positive relationships were detected between settlement and the occurrence of positive temperature anomalies, easterly winds, periods of large tidal range and Southern Ocean Oscillation Index values associated with La Niña episodes. The models were able to forecast P. canaliculus settlement with excellent prediction accuracy based on time of year and environmental conditions 1 mo prior to collection. This study highlights the benefit of undertaking long-term monitoring of spat settlement and the related environmental factors that affect this ecological process. In combination with advance modelling techniques that enable forecasting of settlement densities, such knowledge can help to overcome challenges in spat supply and enable production upscaling.

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Seasonal effects of the seeding on the growth of Chilean mussel ( Mytilus edulis platensis, d'Orbigny 1846) cultivated in central Chile

Cited by 13 publications

References 53 publications

Single nucleotide polymorphisms in native South American Atlantic coast populations of smooth shelled mussels: hybridization with invasive European Mytilus galloprovincialis

Single nucleotide polymorphisms in native South American Atlantic coast populations of smooth shelled mussels: hybridization with invasive European Mytilus galloprovincialis

Modulation of digestive physiology and biochemistry inMytilus californianusin response to feeding level acclimation and microhabitat

Forecasting mussel settlement using historical data and boosted regression trees

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