Exploring the causes of differences in growth rate of the Patagonian scallop Zygochlamys patagonica along its commercial bed distribution in the SW Atlantic

Lomovasky, Betina J.; Baldoni, Ana; Ribeiro, Pablo D.; Alvarez, Gladis Susana; Lasta, Mario; Campodónico, Silvana; Iribarne, Oscar

doi:10.1016/j.seares.2011.05.010

Cited by 9 publications

(2 citation statements)

References 54 publications

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“…Hence, only a proper re-analysis of the shells used in the previous studies will show whether we are dealing with an increase of maximum lifespan with decreasing ambient temperature, as observed in other bivalve species (e.g. Lomovasky et al, 2008Lomovasky et al, , 2011, or with a distinct underestimation of individual age in the previous studies. Although the difference between our analysis and those previously reported may lead to the hypothesis of changes in growth rate, we believe that it is most likely due to deficiencies of the used techniques.…”

Section: Discussionmentioning

confidence: 94%

Distribution pattern, density and growth of the stout razor clam Tagelus plebeius in a South-west Atlantic estuarine system

et al. 2016

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The population biology of the stout razor clam Tagelus plebeius is poorly understood, despite the species' current wide distribution, and the potential use of its Holocene shell deposits to infer past environmental and ecological conditions. This study investigates distribution and growth pattern of T. plebeius in the south-western Atlantic Mar Chiquita Coastal lagoon (37°32′S 57°19′W), Argentina. The population includes the oldest individuals (up to 27 years) reported so far with shell length up to 77.9 mm. A von Bertalanffy model with L∞ = 67.60 mm (95% CI = 64.55; 70.64), k = 0.181 year−1 (CI = 0.142; 0.218), and t0 = −0.77 (CI = −1.46; −0.08) best described their individual growth for the whole population. The higher density, growth rate k, t0 and maximum age and lower L∞ were in the low intertidal rather than in the medium intertidal, but there were no differences in density and age between medium and high intertidal. Given the results and the current knowledge on the effects of different factors influencing this species, we conclude that the distribution pattern and shell growth observed in our study reflect a response to metabolic necessities in combination with a strong influence of biological interactions.

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Section: Discussionmentioning

confidence: 94%

Distribution pattern, density and growth of the stout razor clam Tagelus plebeius in a South-west Atlantic estuarine system

et al. 2016

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“…It is suggested that, in the marine environment, temperature is the primary factor limiting growth, rather than food [15][16][17]. However, in the case of natural Z. patagonica banks in the South Atlantic, differences in growth rates are believed to be constrained by hydrographic processes that influence primary productivity [18]. Conversely, the combined impact of rising ocean temperatures and carbon dioxide levels in seawater has significant physiological and ecological consequences for numerous Antarctic and sub-Antarctic marine invertebrates [19].…”

Section: Discussionmentioning

confidence: 99%

Growth and Survival of Scallops Austrochlamys natans (Philippi, 1845) and Zygochlamys patagonica (P. P. King, 1832) in Suspended Systems and Land-Based Tanks in Chilean Patagonia

Gallardo,

Araneda,

de Godoy

et al. 2024

Aquaculture Research

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The southern scallop (Austrochlamys natans) and the Patagonian scallop (Zygochlamys patagonica) are vital species in the fisheries of Chilean Patagonia. However, overfishing has led to stock depletion, necessitating research for stock restoration and commercial production. This study aimed to evaluate the growth and survival of these scallops in suspended systems and land-based tanks across various Patagonian regions. Eight experiments were conducted, three with southern scallops and five with Patagonian scallops. For southern scallops, two experiments involved suspended systems at different shell heights and three tested land-based tanks at various temperatures (9, 11, and 13°C). Patagonian scallop experiments included one suspended system in an endemic area, land-based tanks with different temperatures (9, 11, and 13°C), and three suspended systems outside the species’ endemic zone. In suspended systems, southern scallops grew from 15.1 to 42.7 mm (shell height) in 322 days, with a rate of 0.085 mm/day and a survival rate of 43.7%. Patagonian scallops reached 46.0 mm shell height in 466 days, with a growth rate of 0.079 mm/day and a survival rate of 57.2%. Experiments in controlled-temperature tanks revealed that 13°C was the lethal temperature for southern scallops. Notably, higher growth rates occurred at temperatures between 9 and 11°C. Both species show potential for future commercial cultivation, contributing to Chilean aquaculture diversification.

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Scallop Ecology

Brand¹

2016

Scallops - Biology, Ecology, Aquaculture, and Fisheries

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Exploring the causes of differences in growth rate of the Patagonian scallop Zygochlamys patagonica along its commercial bed distribution in the SW Atlantic

Cited by 9 publications

References 54 publications

Distribution pattern, density and growth of the stout razor clam Tagelus plebeius in a South-west Atlantic estuarine system

Distribution pattern, density and growth of the stout razor clam Tagelus plebeius in a South-west Atlantic estuarine system

Growth and Survival of Scallops Austrochlamys natans (Philippi, 1845) and Zygochlamys patagonica (P. P. King, 1832) in Suspended Systems and Land-Based Tanks in Chilean Patagonia

Scallop Ecology

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