Habitat segregation of two dotillid crabs Scopimera globosa and Ilyoplax pusilla in relation to their cellulase activity on a marsh-dominated estuarine tidal flat in central Japan

Kawaida, Shun; Toyohara, Haruhiko

doi:10.1016/j.jembe.2013.09.003

Cited by 18 publications

(8 citation statements)

References 43 publications

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“…A), although a statisti-cal test could not be performed because of small sample size. Habitat-specific changes in CAs have also been reported for I. pusilla in the Tanakagawa tidal flats (Kawaida et al 2013). The high CAs could be attributed to the high demand for cellulose digestion at Sta.…”

Section: Polychaetementioning

confidence: 61%

“…Notably, M. japonicus and T. osawai showed the highest CA values with distinctive intraspecific variations even within the same sampling location (0.101-1.464 µmol min −1 mg-protein −1 for M. japonicus and 0.009 to 0.898 µmol min −1 mg-protein −1 for T. osawai). The variation in CA values was probably due to their intestinal fullness (Kawaida et al 2013). Suspension-feeding bivalves, including Nuttallia japonica, C. japonica, and L. marilina, also had high CAs (0.108-0.211 µmol min −1 mg-protein −1 ).…”

Section: Polychaetementioning

confidence: 99%

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Cellulase activity and stable isotope signature of benthic macroinvertebrates in estuarine habitats: potential assimilation of land-derived organic matter

Kanaya

Tanimura

Niiyama

et al. 2019

Plankton Benthos Res

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We investigated inter-species dietary variation and potential cellulose digestion of 12 macroinvertebrate taxa collected from two locations in the estuarine Idoura Lagoon, Sendai Bay. All taxa exhibited cellulase activity (CA), which was higher among surface-deposit feeders (bivalve Macoma contabulata, polychaete Tylorrhynchus osawai, and ocypodid crabs) and obligatory suspension feeders (bivalves Corbicula japonica and Nuttallia japonica) (0.108 to 0.764 µmol min −1 mg-protein −1 ). In contrast, CA was lower among facultative suspension-feeding and deep-deposit feeding polychaetes (Hediste spp. and Heteromastus sp., respectively), and was lowest in the deep-deposit feeding polychaete Notomastus sp. The stable isotope ratios of the macroinvertebrates differed among feeding groups. A δ 13 C-based isotope mixing model revealed that the major dietary component of the surface-deposit feeders was microphytobenthos (34-50%), regardless of their high CAs. Although CAs of obligatory and facultative suspension feeders were comparable to or lower than those of surface-deposit feeders, they were highly dependent on river-derived materials at the station near the freshwater input (38-59%). These results indicate that CA is a common physiological characteristic of macroinvertebrates in estuarine soft-bottom habitats, but the dietary contribution of riverine detritus is not correlated with enzymatic activity. Our findings indicate that several factors affect the realized dietary components of macroinvertebrates, including feeding mode, the selectivity of ingestion, and digestive enzyme activity.

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Section: Polychaetementioning

confidence: 61%

Section: Polychaetementioning

confidence: 99%

Cellulase activity and stable isotope signature of benthic macroinvertebrates in estuarine habitats: potential assimilation of land-derived organic matter

Kanaya

Tanimura

Niiyama

et al. 2019

Plankton Benthos Res

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“…Scopimera globosa and I. pusilla were also found in the Tanaka River and the distribution patterns of these are shown in Fig. 44 (Kawaida et al 2013). Scopimera globosa inhabited the sandy flat with low contents of organic matter, while I. pusilla inhabited the muddy flat with high contents of organic matter (Fig.…”

Section: -4 Cellulase Activities In the Temperate Climate Wetlandsmentioning

confidence: 97%

Degradation of Plant-derived Carbohydrates in Wetlands

Ogino¹,

Liu²,

Toyohara³

2018

Aqua-BioSci. Monogr. (ABSM)

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Corbicula japonica is one of the most important bivalves in inland fishery resources. Stable isotopic studies have shown that it can assimilate plant-derived hard-degradable carbohydrates. Further studies revealed that this species has endogenous enzymes to digest these carbohydrates.We investigated the ability of various organisms to degrade hard-degradable carbohydrates in wetlands from subarctic to subtropical zones and found that they could contribute to their degradation.We found that the enzymes secreted from organisms would bind to the sediment and contribute to the degradation of cellulose. We defined these enzymes as "the environmental enzymes". Comparison of various sediments revealed that the binding abilities of the sediment for the environmental enzyme were ascribable to oxidized metal, organic matters and the ratio of sand, silt and clay.

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“…The surface deposit-feeding sand bubbler crab, Scopimera globosa, is one of the most abundant burrowing crab species in the upper tidal zone of Anmyeon Island, Korea [18]. A few studies have investigated the biological and ecological information of this species such as population ecology, life history and behavioral characteristics [19][20][21][22]. It lives in the sandy intertidals and ingests surface sediments and egests the remaining particles around the burrow in the shape of beans [23].…”

Section: Introductionmentioning

confidence: 99%

The Variation on Sediment Reworking with Influencing Factors by a Sand Bubbler Crab, Scopimera globosa, in Intertidal Sediments of the Anmyeon Island, Korea

Seo

Koo

2021

Sustainability

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Though biological and ecological characteristics of Scopimera globosa have been intensively investigated, little has been understood on bioturbation, especially sediment reworking. This study was designed to evaluate variation on sediment reworking of S. globosa based on feeding pellet production (FP) and burrowing pellet production (BP) with influencing factors and estimating the chlorophyll content reduction within the surface sediment by its feeding. The FP and BP largely fluctuated according to chlorophyll a concentration and crab density, but both were not influenced by temperature. The FP was enhanced by chlorophyll a concentration, whereas both FP and BP were restricted by crab density. The daily individual production was highest in spring, followed by fall and summer, with values of 25.61, 20.70 and 3.90 g ind.−1 d−1, respectively, while the total daily production was highest in fall, followed by summer and spring 2150, 1660 and 660 g m−2 d−1, respectively. The daily sediment reworking based on the FP and BP of Scopimera was highest in fall, followed by summer and spring, with values of 1.91, 1.70 and 0.77 mm d-1 and the annual sediment reworking rate of this species was calculated 40 cm year−1 based on its density in this study area. The chlorophyll a reduction ratio was estimated from 11 to 24% in one day by its feeding. These results imply that the sediment reworking of S. globosa is regulated by food abundance and its density, and Scopimera is an important bioturbator, greatly influencing biogeochemical changes in the intertidal sediments.

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Habitat segregation of two dotillid crabs Scopimera globosa and Ilyoplax pusilla in relation to their cellulase activity on a marsh-dominated estuarine tidal flat in central Japan

Cited by 18 publications

References 43 publications

Cellulase activity and stable isotope signature of benthic macroinvertebrates in estuarine habitats: potential assimilation of land-derived organic matter

Cellulase activity and stable isotope signature of benthic macroinvertebrates in estuarine habitats: potential assimilation of land-derived organic matter

Degradation of Plant-derived Carbohydrates in Wetlands

The Variation on Sediment Reworking with Influencing Factors by a Sand Bubbler Crab, Scopimera globosa, in Intertidal Sediments of the Anmyeon Island, Korea

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