Feeding behavior of the ocypodid crab Macrophthalmus japonicus and its effects on oxygen-penetration depth and organic-matter removal in intertidal sediments

Koo, Bon Joo; Kim, Sung-Han; Hyun, Jung‐Ho

doi:10.1016/j.ecss.2019.106366

Cited by 22 publications

(11 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under low temperatures (here 6, 12 °C), basking behaviour, i.e. a common thermoregulatory behaviour observed in many ectotherms, might allow species to live in the limited-oxygenated zone to draw benefit from solar heating 83 – 87 . In contrast, burrowing deep into the sediment may provide cooler environment and leads to a decrease in cell temperature 79 , 88 , 89 .…”

Section: Discussionmentioning

confidence: 99%

Effects of temperature on the behaviour and metabolism of an intertidal foraminifera and consequences for benthic ecosystem functioning

Deldicq

Langlet

Delaeter

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Heatwaves have increased in intensity, duration and frequency over the last decades due to climate change. Intertidal species, living in a highly variable environment, are likely to be exposed to such heatwaves since they can be emerged for more than 6 h during a tidal cycle. Little is known, however, on how temperature affects species traits (e.g. locomotion and behaviour) of slow-moving organisms such as benthic foraminifera (single-celled protists), which abound in marine sediments. Here, we examine how temperature influences motion-behaviour and metabolic traits of the dominant temperate foraminifera Haynesina germanica by exposing individuals to usual (6, 12, 18, 24, 30 °C) and extreme (high; i.e. 32, 34, 36 °C) temperature regimes. Our results show that individuals reduced their activity by up to 80% under high temperature regimes whereas they remained active under the temperatures they usually experience in the field. When exposed to a hyper-thermic stress (i.e. 36 °C), all individuals remained burrowed and the photosynthetic activity of their sequestered chloroplasts significantly decreased. Recovery experiments subsequently revealed that individuals initially exposed to a high thermal regime partially recovered when the hyper-thermic stress ceased. H. germanica contribution to surface sediment reworking substantially diminished from 10 mm3 indiv−1 day−1 (usual temperature) to 0 mm3 indiv−1 day−1 when individuals were exposed to high temperature regimes (i.e. above 32 °C). Given their role in sediment reworking and organic matter remineralisation, our results suggest that heatwaves may have profound long-lasting effects on the functioning of intertidal muddy ecosystems and some key biogeochemical cycles.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of temperature on the behaviour and metabolism of an intertidal foraminifera and consequences for benthic ecosystem functioning

Deldicq

Langlet

Delaeter

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The correlation between FP and chlorophyll a concentration showed that the feeding activity of S. globosa was enhanced by food abundance. The microphytobenthos attached to sediment particles is the main nitrogen source for surface deposit-feeders and is an important factor influencing feeding activity [24][25][26]. Previous studies have demonstrated that the feeding activity of surface deposit-feeding crabs increases with chlorophyll a concentration of surface sediments [27,28].…”

Section: Discussionmentioning

confidence: 99%

“…Some field studies have reported that chlorophyll a is reduced by the crab feeding on the surface sediments [5,26,35]. Reinsel [35] found that the sand fiddler crab, U. pugilator, contributed to 20-70% chlorophyll a reduction, and another study showed 30-60% chlorophyll a reduction by Uca uruguayensis [5].…”

Section: Discussionmentioning

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…Our results suggested that ocypodids Ilyoplax tansuiensis, M. de nitus, and Uca arcuata were more abundant in the rst sampling period, and grapsids S. dehaani and S. plicata were absent in the initial phase but emerged later (Table 1). Most ocypodid crabs are surface deposit feeders and sesarmid crabs are capable of consuming mangrove leaf litter (Chen and Ye, 2008; Koo et al, 2019;Ravichandran et al, 2006). Thus, this may explain why the proportions of PH increased in the last sampling period (Fig.…”

Section: Discussionmentioning

confidence: 99%

Changes of community structure and functional feeding groups of benthic macrofauna after mangrove afforestation in a subtropical intertidal zone, China

Rao

Cai

Zhou

et al. 2021

Preprint

View full text Add to dashboard Cite

Afforestation is a primary response to the loss and degradation of mangroves worldwide. The successful restoration of mangrove ecosystems is in part indicated by the rebuilding of macrobenthic community. However, the community dynamic of benthic macrofauna after mangrove afforestation was poorly known. Here, three quarterly surveys (2006–2007, 2014–2015, 2019–2020) of the benthic macrofauna and sediment grain size were conducted in a mix-planted mangrove stand (Kandelia obovata + Sonneratia apetala) in Xiamen Tong'an Bay, China. Our results showed that the community structure of benthic macrofauna differed significantly after mangrove afforestation. These differences were accompanied by the declines in the species number, abundance, biomass, and diversity (H'), as well as the fining of sediments. We also found that the epifauna and infauna exhibited different adaptabilities to mangrove vegetation. Additionally, shifts in the composition of the functional feeding groups were observed, indicating the modification of trophic structure after mangrove afforestation. We recommend that future mangrove afforestation programs call for a guide to coordinate habitats for different taxa.

show abstract

Feeding behavior of the ocypodid crab Macrophthalmus japonicus and its effects on oxygen-penetration depth and organic-matter removal in intertidal sediments

Cited by 22 publications

References 33 publications

Effects of temperature on the behaviour and metabolism of an intertidal foraminifera and consequences for benthic ecosystem functioning

Effects of temperature on the behaviour and metabolism of an intertidal foraminifera and consequences for benthic ecosystem functioning

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

Changes of community structure and functional feeding groups of benthic macrofauna after mangrove afforestation in a subtropical intertidal zone, China

Contact Info

Product

Resources

About