Possible Prediction of Scallop Swimming Styles from Shell and Adductor Muscle Morphology

Tremblay, Isabelle; Guderley, Helga

doi:10.2983/035.036.0104

Cited by 5 publications

(11 citation statements)

References 31 publications

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“…The adductor muscle is the most valuable edible part of the scallop and it is the most important locomotory organ in scallops, as it is used for swimming and defense. High shell mass can influence the gravitational effect on scallops and potentially reduce movement ability (Tremblay et al, 2017). Thus, a high SW/AW ratio may mean low commercial value and poor swimming ability of scallops.…”

Section: Resultsmentioning

confidence: 99%

Morphological trends in three different populations of the noble scallop Mimachlamys crassicostata (G. B. Sowerby II, 1842) along the South China Sea Coast and their relationship to environment factors

Su¹,

Liu²,

Zhu³

2023

Indian J. Fish.

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This study was carried out to assess the spatial patterns of morphological characteristics of the three cultured populations of the scallop Mimachlamys crassicostata (G. B. Sowerby II, 1842), from Yazhou Bay, Liusha Bay and Mirs Bay along the South China Sea coast and to determine whether any of the morphological characteristics could be related to selected environmental parameters. Morphological ratios of seven traits were analysed by classification and regression tree to evaluate the morphological variations in 1353 samples from three geographic locations. In addition, relationships between discriminatory morphological characteristics (ratios of shell weight to length, shell weight to height, whole weight to length and shell weight to adductor muscle weight) and nine environmental parameters (seawater temperature, salinity, pH, chemical oxygen demand, dissolved inorganic nitrogen, active phosphate, total petroleum hydrocarbons, dissolved oxygen (DO) and chlorophyll a were assessed using mixed-effects linear models (LMMs). Results showed that more than 80% of individuals could be assigned to their collection locations based on the classification and regression tree. The accuracy of assigning individuals to their collection location of Mirs Bay, Yazhou Bay and Liusha Bay based on morphological variation was 85.52, 80.30 and 80.68%, respectively. Results of the LMMs revealed that ratios of shell weight to height and whole weight to length correlated positively with temperature and salinity, respectively. Shell weight to adductor muscle weight correlated negatively with DO concentration, indicating that high DO levels may be necessary to provide a suitable environment for scallops cultured in a food-rich coastal bay. These results may be helpful for future resource management, including stock recognition, productive management and stock conservation of M. crassicostata in the South China Sea.Keywords: Environmental parameters, Cultured population, Mixed-effects linear model, Morphological characteristics, Stock conservation

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Section: Resultsmentioning

confidence: 99%

Morphological trends in three different populations of the noble scallop Mimachlamys crassicostata (G. B. Sowerby II, 1842) along the South China Sea Coast and their relationship to environment factors

Su¹,

Liu²,

Zhu³

2023

Indian J. Fish.

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“…Indeed, these indicators were found to be related to exercise adaptations of scallops. Compared with the top velocity, which reflects intense valve movements, modifications in shell width and muscle mass were also considered derived adaptations to scallop locomotion activity (Tremblay and Guderley, 2017). It was reported that the scallops with greater shell width usually had faster sinking time, heavier muscle masses and more tonic contraction duration (Tremblay et al, 2012;Tremblay and Guderley, 2017).…”

Section: Indicators For Assessing Scallop Survival Potentialmentioning

confidence: 99%

“…Compared with the top velocity, which reflects intense valve movements, modifications in shell width and muscle mass were also considered derived adaptations to scallop locomotion activity (Tremblay and Guderley, 2017). It was reported that the scallops with greater shell width usually had faster sinking time, heavier muscle masses and more tonic contraction duration (Tremblay et al, 2012;Tremblay and Guderley, 2017). Indeed, tonic contraction plays a crucial role in maintenance of valve opening and prolonged valve closure (Tremblay et al, 2012).…”

Section: Indicators For Assessing Scallop Survival Potentialmentioning

confidence: 99%

Valve movements indicate rhythm and survival potential of scallop

Xun

Wang²,

Liu³

et al. 2023

Front. Mar. Sci.

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Yesso scallop, Patinopecten yessoensis, is one of the most economically important marine bivalves that has been extensively cultured on the northern coast of China. Unfortunately, recurrent mass scallop mortalities have caused enormous economic losses to farmers and industries. Therefore, the exploration of indicators to assess the survival potential of scallops is conducive to breeding new varieties for a high survival rate. However, traditional indicators related to scallop health are generally measured using laborious and time-consuming methods that often involve killing the scallops. In this study, we developed a non-invasive and real-time method for monitoring Yesso scallop valve movements. Our research demonstrated a close correlation between the behavior of valve movements and the survival potential of scallops. The frequency of valve movements was found to have a circadian rhythm with elevated frequency during 7:00–9:00 and 17:00–19:00, showing a coincident rhythm with cardiac activity. Moreover, the patterns of valve behavior indicated that intense valve movements appeared to be more equally distributed in the lifespan of long-surviving individuals. Velocity estimation of valve movement was further applied to assess its correlation with scallop vitality and mortality. The top valve movement velocity was the most important determinant of the scallop vitality coefficient, which was positively correlated with scallop survival time (R2 = 0.873, P < 0.01). The prominent variables in predicting scallop survival potential, including the scallop top velocity and thickness, were presumed to be linked to the movement associated attributes of the shell ligament and muscle, which are important determinants of valve behavior intensity. Our findings demonstrate that an understanding of the valve movements of bivalves can be of great benefit, not only in exploring scallop vitality but also in developing scallop breeding strategies.

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“…The swimming lifestyle of scallops is generally considered as an evolutionary novelty [16] , representing excellent models for investigating the coordinated genome and lifestyle evolution. Distinct lifestyles from cementing, byssal attachment with sporadic swimming, recessing, and free-living to gliding (classified into ecomorphs A to E) have been well documented by measurement of muscle use in inducing escape responses [17] , [18] . Scallops with gliding behavior are recognized as the most active swimmers.…”

Section: Introductionmentioning

confidence: 99%

“…Scallops with gliding behavior are recognized as the most active swimmers. Shell morphology and metabolic capacity of adductor muscle are closely related to the swimming endurance of scallop species [17] , [18] . However, genomic bases underlying the evolution of the scallop swimming lifestyle remain poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Bird-Like Genome Miniaturization During the Evolution of Scallop Swimming Lifestyle

Liu

et al. 2022

Genomics, Proteomics &Amp; Bioinformatics

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Genome miniaturization drives key evolutionary innovations of adaptive traits in vertebrates, such as the flight evolution of birds. However, whether similar evolutionary processes exist in invertebrates remains poorly understood. Derived from the second-largest animal phylum, scallops are a special group of bivalve molluscs and acquire the evolutionary novelty of the swimming lifestyle, providing excellent models for investigating the coordinated genome and lifestyle evolution. Here, we show for the first time that genome sizes of scallops exhibit a generally negative correlation with locomotion activity. To elucidate the co-evolution of genome size and swimming lifestyle, we focus on the Asian moon scallop (Amusium pleuronectes) that possesses the smallest known scallop genome while being among scallops with the highest swimming activity. Whole-genome sequencing of A. pleuronectes reveals highly conserved chromosomal macrosynteny and microsynteny, suggestive of a highly contracted but not degenerated genome. Genome reduction of A. pleuronectes is facilitated by significant inactivation of transposable elements, leading to reduced gene length, elevated expression of genes involved in energy-producing pathways, and decreased copy numbers and expression levels of biomineralization-related genes. Similar evolutionary changes of relevant pathways are also observed for bird genome reduction with flight evolution. The striking mimicry of genome miniaturization underlying the evolution of bird flight and scallop swimming unveils the potentially common, pivotal role of genome size fluctuation in the evolution of novel lifestyles in the animal kingdom.

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Possible Prediction of Scallop Swimming Styles from Shell and Adductor Muscle Morphology

Cited by 5 publications

References 31 publications

Morphological trends in three different populations of the noble scallop Mimachlamys crassicostata (G. B. Sowerby II, 1842) along the South China Sea Coast and their relationship to environment factors

Morphological trends in three different populations of the noble scallop Mimachlamys crassicostata (G. B. Sowerby II, 1842) along the South China Sea Coast and their relationship to environment factors

Valve movements indicate rhythm and survival potential of scallop

Adaptive Bird-Like Genome Miniaturization During the Evolution of Scallop Swimming Lifestyle

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