Patterns of the growth of soft-shell clam Mya arenaria L. (Bivalvia) in shallow water estuaries of the southern Baltic Sea

Filippenko, Dmitry; Науменко, Е. Н.

doi:10.1016/j.ecohyd.2014.03.002

Cited by 10 publications

(8 citation statements)

References 34 publications

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“…At the same time, Mya group growth was quite different at sites 3 and 4 despite similar salinity conditions. In addition, a much faster growth of Mya arenaria (40 mm over 5 years) was found in the southern Baltic [23], where surface salinity was even lower than in our study (5 ‰). As the feeding conditions (the rate of primary production) are quite close in the Kandalaksha Bay of the White Sea and in the southern Baltic [10,22], a possible reason of a faster growth of the soft-shell clams in the latter area might be more favourable temperature conditions (the absence of negative temperatures in winter).…”

Section: Group Growthcontrasting

confidence: 77%

“…However, the maximum growth rate in our study was much lower than that in other areas of Mya arenaria distribution, especially the Atlantic coast of North America. In our study, the length of 7-year-old clams was 24-36 mm, while in the mid-Atlantic Mya arenaria reached an average size of 150 mm by the age of 8 [1], and in southern Baltic, 40 mm by the age of 5 [23].…”

Section: Group Growthmentioning

confidence: 98%

“…Growth rate and lifespan of soft-shell clams have been studied repeatedly in different geographical locations such as the North Atlantic [2,7,8,12,46,58], the Kattegat [44], the Baltic Sea [23], the White Sea [37,53,57]. In some cases, the results of these observations showed a significant variation even within the same region.…”

Section: Introductionmentioning

confidence: 95%

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Growth of Mya arenaria L. at the northern edge of the range: heterogeneity of soft-shell clam growth characteristics in the White Sea

et al. 2016

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Linear growth of soft-shell clams, Mya arenaria L., was studied at six locations in the White Sea situated in the middle and low tidal zones. The main aim was to analyse the growth heterogeneity both within beds (with respect to individual growth) and between beds (with respect to group growth). Mya population was characterized by a slow growth and a long lifespan. Maximum shell size was 70-80 mm, and longevity was at least 25 years. In addition, growth rates were highly variable, statistically significant differences being present both within and between the beds. No differences were found in group growth between different tidal horizons of the same site. The slowest growth of soft-shell clams was observed at sites with the greatest content of fine particles (silt and clay) in sediments. Differences between beds in Mya group growth could reflect variability of feeding conditions, which were probably determined by some local features (e.g. hydrodynamic regime). However, the variation of the individual growth rate within beds was comparable to that of the group growth rate between studied locations. To a great extent it seemed to be determined by the characteristics of the initial period of soft-shell clam growth.

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Section: Group Growthcontrasting

confidence: 77%

Section: Group Growthmentioning

confidence: 98%

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Growth of Mya arenaria L. at the northern edge of the range: heterogeneity of soft-shell clam growth characteristics in the White Sea

et al. 2016

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“…However, the Mya arenaria growth rate in the studied bed was significantly lower than that in other areas of the species distribution, especially at the Atlantic coast of North America. Thus, in our studies, Mya arenaria reached an average size of 42 mm in 10 years, while in the mid-Atlantic Mya arenaria reached an average size of 150 mm in 8 years (Abraham and Dillon 1986), in the southern Baltic Sea 40 mm in 5 years (Filippenko and Naumenko 2014). The reason may be the severe temperature conditions and low salinity in the study area (Maximovich and Guerassimova 2003).…”

Section: Lifespan and Length Growth Of Mya Arenariasupporting

confidence: 44%

Cohort life tables for a population of the soft-shell clam, Mya arenaria L., in the White Sea

2014

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The Mya arenaria generation in the White Sea was observed for almost the whole life cycle (around 25 years). Using the data on this generation dynamics, the cohort life table was built. The main purpose of the research is analysis of age-specific mortality in this softshell clam population. The mortality rate was found to change more than tenfold throughout the study period. No regular changes in its value were observed. Periods of low mortality alternated with periods of much higher mortality. Several reasons for the increase in M. arenaria mortality rate during its life cycle are proposed: (a) living in the surface sediment layer at early stages of life cycle (unstable environment, high mortality of non-viable clams, predator impact); (b) intense intraspecific relationships in dense aggregations of young clams; (c) increased intraspecific competition during periods of the rapid individual growth; (d) ageing (clam mortality increases with older ageachievement of an average and a maximum lifespan).

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“…Between 15 and 40 M. arenaria specimens of wild origin were collected from the eulittoral zone of each of nine locations within Europe (Figure 2, Table 1). The length of the shell of every individual was measured with digital calipers (0.01 mm precision) and used as a within-population proxy for age [50]. The shells were retained and processed to determine shell shape as well as to quantify shell thickness and organic content as described subsequently.…”

Section: Sample Collection and Dna Extractionmentioning

confidence: 99%

Population Genetic Structure Is Unrelated to Shell Shape, Thickness and Organic Content in European Populations of the Soft-Shell Clam Mya Arenaria

Noia

Telesca

Vendrami

et al. 2020

Genes

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The soft-shell clam Mya arenaria is one of the most ancient invaders of European coasts and is present in many coastal ecosystems, yet little is known about its genetic structure in Europe. We collected 266 samples spanning a latitudinal cline from the Mediterranean to the North Sea and genotyped them at 12 microsatellite loci. In parallel, geometric morphometric analysis of shell outlines was used to test for associations between shell shape, latitude and genotype, and for a selection of shells we measured the thickness and organic content of the granular prismatic (PR), the crossed-lamellar (CL) and the complex crossed-lamellar (CCL) layers. Strong population structure was detected, with Bayesian cluster analysis identifying four groups located in the Mediterranean, Celtic Sea, along the continental coast of the North Sea and in Scotland. Multivariate analysis of shell shape uncovered a significant effect of collection site but no associations with any other variables. Shell thickness did not vary significantly with either latitude or genotype, although PR thickness and calcification were positively associated with latitude, while CCL thickness showed a negative association. Our study provides new insights into the population structure of this species and sheds light on factors influencing shell shape, thickness and microstructure.

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Patterns of the growth of soft-shell clam Mya arenaria L. (Bivalvia) in shallow water estuaries of the southern Baltic Sea

Cited by 10 publications

References 34 publications

Growth of Mya arenaria L. at the northern edge of the range: heterogeneity of soft-shell clam growth characteristics in the White Sea

Growth of Mya arenaria L. at the northern edge of the range: heterogeneity of soft-shell clam growth characteristics in the White Sea

Cohort life tables for a population of the soft-shell clam, Mya arenaria L., in the White Sea

Population Genetic Structure Is Unrelated to Shell Shape, Thickness and Organic Content in European Populations of the Soft-Shell Clam Mya Arenaria

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