Isotopic evidence of particle size-dependent food partitioning in cocultured sea squirt Halocynthia roretzi and Pacific oyster Crassostrea gigas

Kang, Chang‐Keun; Choy, Eun Jung; Hur, Young-Baik; Myeong, Jeong‐In

doi:10.3354/ab00126

Cited by 55 publications

(45 citation statements)

References 49 publications

(85 reference statements)

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“…1c). Of 13 recent isotope-based studies on trophic sources and food partitioning that involved marine benthic bivalves, the following tissues were used: 6 authors examined whole bodies (Kang et al 1999, 2009, Herman et al 2000, Riera et al 2002, Decottignies et al 2007, Dubois et al 2007), 3 examined foot muscle (Kasai et al 2004, Kasai & Nakata 2005, Bucci et al 2007), 2 studied unspecified (probably adductor) 'muscle' (Iken et al 2001, Grall et al 2006, 1 examined the adductor muscle (Page & Lastra 2003) and 1 focused on the mantle (Antonio et al 2010). At the same time, the variation of stable isotope ratios between bivalve tissues has been assessed in several studies (Lorrain et al 2002, Yokoyama & Ishihi 2006, Cabanellas-Reboredo et al 2009, Deu dero et al 2009, Aya & Kudo 2010.…”

Section: Resultsmentioning

confidence: 99%

“…Altered stable isotope signatures in the presence of a potential competitor would prove correlation between this presence and a shift in diet; however the direction of a causal relationship can be only proved by manipulations. Kang et al (2009) came close to the design we suggest, comparing stable isotope ratios in co-and monocultured ascidians and oysters. However, they sampled co-and monocultured animals from different sites separated by several kilometers and never examined co-and monocultures from the same site.…”

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confidence: 99%

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Intraspecific variation in stable isotope signatures indicates no small-scale feeding interference between a horse mussel and an ascidian

Yakovis¹,

Artemieva²,

Fokin³

et al. 2012

Mar. Ecol. Prog. Ser.

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) clumps on gravel and mussels. Species (M. modiolus or S. rustica), tissue (foot and posterior adductor muscles in M. modiolus) and site (8.1 km apart) factors had strong effects on isotope ratios, whilst the presence of a potential competitor had no effect on SIR in either species. We conclude that the diets of M. modiolus and S. rustica are not affected by co-occurrence and do not overlap much, giving no evidence of competition. Further research should take in account the substantial difference in SIR between the 2 M. modiolus muscular tissues studied: −21.582 ± 0.048 (δ 467: 113-120, 2012 size, likely due to technical limitations of the approach based on direct counting of tagged food particles consumed by each individual.Mar Ecol Prog SerStable isotope ratios of carbon and nitrogen are widely used to indirectly assess the relative contribution of different food sources to the diet of animals (see Boecklen et al. 2011 for review). Isotopic signatures are expressed as δ, the ratio of heavy (e.g. . Based on the measurements of these ratios in potential food sources (which usually include particulate organic matter of different origin or certain prey species for marine benthic consumers), one may apply a mixing model to estimate their contribution to the diet of a particular species (Phillips et al. 2005). Stable isotope composition of consumer tissues does not reflect the most recent diet. Instead, it is affected by feeding patterns of several weeks to few months preceding sampling, depending on the metabolic rate of a particular organism and tissue (Dalerum & Angerbjörn 2005). Accurate mixing models thus require potential food sources sampled in advance according to previously studied metabolic rates.Interspecific differences in 13 C and 15 N signatures have been unhesitatingly interpreted as indicators of feeding segregation between potentially competitive suspension-feeding species (e.g. Dubois et al. 2007). High variation of stable isotope signatures observed among the tissues of a single organism may, however, compromise these conclusions (see Lorrain et al. 2002, Yokoyama & Ishihi 2006, CabanellasReboredo et al. 2009, Deudero et al. 2009, Aya & Kudo 2010 for data on bivalves). In coastal Arctic waters, relatively slow metabolic rates of benthic invertebrates are combined with high seasonal changes in potential food sources for suspensionfeeders due to the presence of ice cover and variation in river discharge. Tissue-specific isotope incorporation models (Boecklen et al. 2011) are not yet developed for most species. Therefore, the evidence of interspecific feeding interference or its absence based on mixing models demands multiple repeated sampling of the potential food sources at least several months prior to sampling the consumers. This may not always be technically possible or logistically feasible due to the ice freezing and melting seasons.Interspecific competition for food alters the diet at least of an inferior competitor in relation to the diet observed in the absence of a superior competit...

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Intraspecific variation in stable isotope signatures indicates no small-scale feeding interference between a horse mussel and an ascidian

Yakovis¹,

Artemieva²,

Fokin³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…미더덕은 다른 부유물 섭식자인 굴이나 담치류 같은 양식생물들과 공간 및 먹이 경쟁을 일으키는 해적생물로 잘 알려져 있다 (Thompson and Macnair, 2004;Bourque et al,. 2007 (Fry and Sherr, 1984;Michener and Schell, 1994;Kang et al, 2003;Kang et al, 2009 (Fry and Sherr, 1984;Peterson and Fry, 1987;Post, 2002). et al, 1988;France, 1995;Fry, 1996).…”

Section: 서 론unclassified

“…C 값은 해양 식물플랑크톤이 가지는 전형적인 범위에 해당하며, 한반도 연안이나 동중국해에서 조사된 값들과도 매우 유사하였다 (Fry and Sherr, 1984;Tan et al, 1991;Kang et al, 2003Kang et al, , 2009. 조사기간 중 총 부유입자유기물(SPM)과 유기입자물 질(POM) 농도와 엽록소 a(chlorophyll a)의 월별 변화는 뚜렷한 계절적인 변동을 보이지 않았는데 (Fig.…”

Section: 서 론unclassified

“…동위원소 분별효과를 고려해 볼 때, 미더덕의 δ et al, 1994;Riisgård and Larsen, 2000). Kang et al(2009) Petersen, 2007). 다른 해초류인 우렁쉥이(Halocynthia roretzi) 또 한 mucus net에 의해 micro-plankton으로 구성된 CPOM 뿐만 아 니라 pico-와 nano-plankton으로 이루어진 FPOM을 효율적으로 여과하여 이용하는 것으로 보고되었다 (Kang et al, 2009 …”

Section: 서 론unclassified

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Food Sources of the Ascidian Styela clava Cultured in Suspension in Jindong Bay of Korea as Determined by C and N Stable Isotopes

Moon¹,

Park

Yun³

et al. 2014

The Sea

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To examine the trophic ecology of the ascidian Styela clava in an aquaculture system of Korea, stable carbon and nitrogen isotopes were analyzed monthly in S. clava, coarse (>20 μm, CPOM) and fine particulate organic matters (0.7<<20 μm, FPOM). CPOM (means: −18.5±1.2‰, 9.3±0.7‰) were significantly higher δ N values of FPOM than those of CPOM, suggesting that they rely largely on the FPOM as a dietary source. In addition, our results displayed that the relative importance between CPOM and FPOM as dietary source for the ascidians can be changed according to the availability of each component in ambient environment, probably reflecting their feeding plasticity due to non-selective feeding irrespective of particle size. Finally, our results suggest that dynamics of pico-and nano-size plankton (i.e., FPOM) as an available nutritional source to S. clava should be effectively assessed to maintain and manage their sustainable aquaculture production.

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How bivalves feed

Gosling¹

2015

Marine Bivalve Molluscs

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Isotopic evidence of particle size-dependent food partitioning in cocultured sea squirt Halocynthia roretzi and Pacific oyster Crassostrea gigas

Cited by 55 publications

References 49 publications

Intraspecific variation in stable isotope signatures indicates no small-scale feeding interference between a horse mussel and an ascidian

Intraspecific variation in stable isotope signatures indicates no small-scale feeding interference between a horse mussel and an ascidian

Food Sources of the Ascidian Styela clava Cultured in Suspension in Jindong Bay of Korea as Determined by C and N Stable Isotopes

How bivalves feed

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