Age and Growth of the Sunray Surf Clam Mactra chinensis in Tomakomai, Southwest Hokkaido.

Sakurai, Izumi

doi:10.2331/suisan.59.469

Cited by 10 publications

(7 citation statements)

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“…Information on the age and growth of the target population is essential for fishery management. The growth ring on the shell surface has been used for age determination in bivalves because it is considered to be formed once a year 2–8 . The growth of C. japonica has been evaluated and age determined by using the growth ring on the shell surface 9–11 or the growth line from acetate peel replicas of shell sections, 12 or by size frequency 13 .…”

Section: Introductionmentioning

confidence: 99%

Shell growth and age determination of the brackish water bivalve Corbicula japonica in Lake Shinji, Japan

Oshima¹,

Suzuki²,

Nakamura³

et al. 2004

Fisheries Sci

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Shell growth and age determination of Corbicula japonica were investigated from samples collected monthly at two sites and field growth experiments from November 1999 to November 2000 in Lake Shinji. Both specimens did not grow in winter when the water temperature was below 11∞C, but grew rapidly from spring to early summer when the water temperature rose from 15∞C to 30∞C, before further growing slowly from summer to autumn after the main breeding period. The monthly marginal growth distribution of the samples indicated that the concentric groove on the shell surface was an annual growth ring. It is concluded that the age of C. japonica in the i-ring group when the shell growth resumed in spring was i + 0.5 (i = 1, 2, · · ·), because the first true growth ring was formed at 0-2 mm in shell length, which then faded with growth. Lee's phenomenon was observed in the age determination results, and thus the growth coefficient and the asymptotic shell length of the von Bertalanffy growth equation were not estimated from the samples. However, these parameters were estimated from the annual shell length increments of the experimental individuals, which were 0.331/year and 28.2 mm, respectively.

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Section: Introductionmentioning

confidence: 99%

Shell growth and age determination of the brackish water bivalve Corbicula japonica in Lake Shinji, Japan

Oshima¹,

Suzuki²,

Nakamura³

et al. 2004

Fisheries Sci

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“…2008) and provides no evidence of recent, successful recruitment events. The low and sporadic recruitment often exhibited by cockles (Sakurai et al. 1998; Ripley & Caswell 2006) further complicates optimisation of harvest strategies from biomass estimates.…”

Section: Discussionmentioning

confidence: 99%

“…Benthic mollusc populations are particularly susceptible to over‐exploitation because they form spatially explicit‐stocks, termed metapopulations (Morgan & Shepherd 2006), which typically exhibit different population dynamics (Sakurai et al. 1998; Prince et al.…”

Section: Introductionmentioning

confidence: 99%

Optimising harvest strategies in a multi‐species bivalve fishery

Gorman¹,

Mayfield²,

Ward³

et al. 2011

Fisheries Management Eco

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Optimising harvests from fishery resources requires appropriate data. In this study, fishery-independent survey and size-at-first maturity (L 50 ) data were used to assess the suitability of current minimum legal sizes (MLS) and total allowable commercial catches (TACC) in the South Australian, mixed-species, mud-cockle (Katelysia spp.) fishery. Estimates of L 50 suggested the MLS was conservative in one fishing zone (Coffin Bay), but appropriate elsewhere. Harvestable-biomass estimates (HB) demonstrated that TACCs were excessive in the Port River (41% of HB), suitable in Coffin Bay (10% of HB) and precautionary in the West Coast (1.5% of HB) fishing zones. Consequently, the MLS was decreased by 5 mm shell length in Coffin Bay and the TACCs for the Port River (reduced by 80%) and West Coast (increased by 40%) amended. This study demonstrated that harvest strategies in mixed-species fisheries can be optimised by explicitly considering data on species composition, abundance and population biology.

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“…Mactra chinensis is one of the most economically important clams in Korea (Ryu and Kim 2001). Several studies have investigated the clam's breeding season (Tomita 1974), age and growth (Sakurai 1993), morphometry and growth rate (Hanaoka and Shimadzu 1949), and the effects of water temperature, salinity, and substrata on its burrowing behavior . Despite the economic importance of the clam, there have been few studies of the age determination and growth characteristics of M. chinensis.…”

Section: Introductionmentioning

confidence: 99%

Age determination and growth rate of Mactra chinensis (Bivalvia: Mactridae) by external rings and chondrophore growth bands

Kim

2016

Ocean Sci. J.

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 Age, growth and mortality of Mactra chinensis were investigated during the period from October 2012 to September 2013 in Busan, South Korea. The monthly variation of the marginal index (MI) of the shell and chondrophore showed that the ring of this species was formed once a year during July. We estimated the age of M. chinensis by reading the external rings on the shell and the growth bands of the chondrophore to compare growth parameters between the two growth characters. The age of this species ranged from 0 to 8 years (shell-based age reading) and from 0 to 10 years (chondrophore-based age reading). Based on external rings and growth bands of chondrophore for the same period, the von Bertalanffy growth functions were expressed by the equation, L t = 101.53[1 exp {0.15(t + 0.75)}] and L t = 90.03[1exp {0.20(t + 0.50)}], respectively. The likelihood test showed that there was a significant difference in L ∞ (P < 0.001), K (P < 0.001), t o (P < 0.001) estimated from non-linear regression between the two growth characters.

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Age and Growth of the Sunray Surf Clam Mactra chinensis in Tomakomai, Southwest Hokkaido.

Cited by 10 publications

References 0 publications

Shell growth and age determination of the brackish water bivalve Corbicula japonica in Lake Shinji, Japan

Shell growth and age determination of the brackish water bivalve Corbicula japonica in Lake Shinji, Japan

Optimising harvest strategies in a multi‐species bivalve fishery

Age determination and growth rate of Mactra chinensis (Bivalvia: Mactridae) by external rings and chondrophore growth bands

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