Optimal sediment grain size and sorting for survival and growth of juvenile Manila clams, Venerupis philippinarum

Joo, Soobin; Jo, Kyungsik; Bae, Hyunmi; Seo, Hyein; Kim, Tae−Won

doi:10.1016/j.aquaculture.2021.737010

Cited by 5 publications

(7 citation statements)

References 35 publications

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“…V. philippinarum is distributed in the northwest Pacific coasts, such as Korea, Japan, China, and the Philippines, and has been introduced to Europe and North America [37,38]. V. philippinarum is an infaunal suspension-feeding bivalve with high ecological and commercial importance [37,39,40].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Temperature and Salinity Stressors on the Survival, Condition and Valve Closure of the Manila Clam, Venerupis philippinarum in a Holding Facility

Bae

Joo

et al. 2021

JMSE

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This article investigates the response of the Manila clam Venerupis philippinarum to possible temperature and salinity changes in a holding facility. First, clams are exposed to four temperatures for 15 days. Valve closure and survival of clams exposed to seawater at 18 °C are higher than those exposed to seawater at 24 °C. Second, clams are exposed to six salinities for 15 days. Survival of clams exposed to two salinity fluctuation conditions (24–30 and 27–24 psu) is lower than that of clams exposed to constant 30 psu conditions. Valve closures of clams exposed to constant low salinity conditions (24 psu) and two salinity fluctuation conditions (24–30 and 27–24 psu) are higher than those exposed to constant 30 psu conditions. Lastly, clams are exposed to two different temperatures and three different salinities conditions for eight days. Valve closure and survival decreased significantly under the combination of 24 °C and 18 psu. These results suggest that an increase in temperature or a wider range of salinity fluctuations are detrimental to the survival of the Manila clam. The synergistic effect of temperature and salinity stressors may decrease the survival period of clams compared to the effect of a single stressor.

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Section: Introductionmentioning

confidence: 99%

The Effects of Temperature and Salinity Stressors on the Survival, Condition and Valve Closure of the Manila Clam, Venerupis philippinarum in a Holding Facility

Bae

Joo

et al. 2021

JMSE

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“…Survival was affected by carbonates, organics, small rocks, coarse sand, sand, very fine sand, and silt. Joo et al (2021) also found that grain size and sorting of the sediment determined the amount of pore-water dissolved oxygen and organic matter, both affecting growth and survival of juvenile Manila clams, with optimal survival and growth linked to poorly-sorted sediment with an average grain size of medium sand (180 – 335 µm). Similarly, the grain size of the sand in the present study, which had a significant positive effect on survival, was 250 – 500 µm.…”

Section: Discussionmentioning

confidence: 90%

“…The sedimentary environment is very important for clam growth and survival (Joo et al 2021). Littleneck clams typically live as infaunal burrowers between 5 and 15 cm depth, in soft sand or sandy mud in the intertidal zone (Lazo 2004).…”

Section: Discussionmentioning

confidence: 99%

Effects of ancient anthropogenic clam gardens on the growth, survival, and transcriptome of Pacific littleneck clams (Leukoma staminea)

Raap

Gurney‐Smith

Dudas

et al. 2022

Preprint

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Clam gardens are habitat modifications established by coastal Indigenous Peoples of northwest North America to enhance intertidal clam habitat productivity to provide secure and reliable local food resources. These gardens were established long ago and are mostly unmaintained in present times. To determine whether unmaintained clam gardens still provide a more productive and beneficial habitat than unmodified clam beaches, Pacific littleneck clams (Leukoma staminea) were transplanted to unmaintained clam gardens or unmodified reference beaches and then evaluated for growth, survival, and transcriptomic signatures of the gill and digestive gland after 16 weeks. All beaches in the study were characterized for sediment grain-size distribution, carbonate concentration, and organic content to identify sediment characteristics that may differ between clam garden and reference sites, as well as potentially contribute to differences in clam productivity. Clam growth and survival, sediment grain-size distribution, and carbonate and organic content were not significantly affected by unmaintained clam gardens. Wide variations in survival, growth, and sediment characteristics were observed among beaches. Examining across beach location resulted in the identification of significant negative effects of small rocks (2.00 - 4.75 mm), and silt (< 63 μm) on both growth and survival. Sand (250 - 500 μm) had a significant positive influence on both growth and survival while fine sand (125 - 250 μm) had a significant positive effect only on growth. Coarse sand (0.50 - 1.00 mm) had a significant positive effect on survival, while very fine sand (63 - 125 μm), carbonate, and organic content all had significant negative effects. To evaluate transcriptomic effects, a de novo transcriptome for L. staminea was assembled. The final assembly contained 52,000 putative transcripts and those specific to each of the two tissues were identified. This revealed that similar functional categories were enriched in tissue-specific genes, but each tissue had its own transcripts comprising the categories. Transcriptomic analysis revealed differential expression in individuals from clam gardens, and although this effect was small in terms of the numbers of genes, specific response genes were identified consistently in both tissues. In summary, while the unmaintained clam gardens did not impact clam growth and survival over the 16 weeks of the study, it did have an effect at the level of the transcriptome. Furthermore, correlations of transcripts associated with either high or low survival provide new insights into ecological associations of these genes in this non-model organism. In summary, localized environmental factors are likely to have a greater influence on Pacific littleneck clam physiology, growth, and survival than the presence/absence of unmaintained clam gardens.

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“…Marine organisms decide when and where to settle based on their endogenous state and specific physical or chemical cues in the environment to maximize adaptation [ 3 , 4 ]. For the zoobenthos, the substrate is one of the decisive factors in their habitat selection process, and the substrate environment significantly affects their growth, survival, distribution, and habitat [ 5 , 6 ]. It has been shown that the grain size and shape of the soft substrate can cause differences in the overall substrate shear strength, cohesion, water content and sediment microtopography, which in turn affect the suitability of the substrate as a habitat [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…It has been shown that the grain size and shape of the soft substrate can cause differences in the overall substrate shear strength, cohesion, water content and sediment microtopography, which in turn affect the suitability of the substrate as a habitat [ 7 , 8 , 9 ]. For example, Venerupis philippinarum had different survival and growth rates in four different grain sized substrates, and medium sand with grain sizes ranging from 180 to 335 μm was more suitable for their growth and survival [ 6 ]. Compared to mud substrates, sand substrates have larger particles which to some extent hinders the search for predators and can provide safer shelter for Mercenaria mercenaria [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Influences of Substrate Grain Size on the Burrowing Behavior of Juvenile Meretrix meretrix

Xue

Fang

et al. 2022

Animals

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The substrate is the key environmental factor that affects the growth, survival, population and distribution of dwelling mollusks in mudflat settings. To clarify the effect of the substrate grain size on soft substrate preference, burrowing ability and behavior during the selection process of juvenile Meretrix meretrix, four different grain size substrates (coarse sand, medium sand, fine sand, and natural substrate) were set up for comparison. The results indicated that: (1) the burrowing ability of juvenile specimens in fine sand was the strongest; (2) the degree (from high to low) of the juvenile’s preference for the four substrates was in the order of fine sand > natural substrate > medium sand > coarse sand; and (3) the selection process of the substrate by the juveniles could be divided into four stages: preparation, selection, burrowing and end stages. These stages showed the behavioral characteristics of a longer selection time and higher percentage of movement in coarse sand. Therefore, our results demonstrated that sea areas or ponds with fine sand as the main component are more suitable for stock enhancement with M. meretrix. These results provide basic data for habitat selection and suitability evaluations for the aquaculture of M. meretrix.

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Optimal sediment grain size and sorting for survival and growth of juvenile Manila clams, Venerupis philippinarum

Cited by 5 publications

References 35 publications

The Effects of Temperature and Salinity Stressors on the Survival, Condition and Valve Closure of the Manila Clam, Venerupis philippinarum in a Holding Facility

The Effects of Temperature and Salinity Stressors on the Survival, Condition and Valve Closure of the Manila Clam, Venerupis philippinarum in a Holding Facility

Effects of ancient anthropogenic clam gardens on the growth, survival, and transcriptome of Pacific littleneck clams (Leukoma staminea)

Influences of Substrate Grain Size on the Burrowing Behavior of Juvenile Meretrix meretrix

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