Relationship between herbivory and leaf traits in mangroves on Iriomote Island, southern Japan

Hirano, Yu; Marui, Motoki; Tachikake, Shuhei; Kato, Taku; Imai, Nobuo

doi:10.1080/13416979.2023.2279003

Cited by 1 publication

(1 citation statement)

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“…estuarine water (Erickson et al, 2004;Nordhaus et al, 2011). Hirano et al (2023) found that herbivory rates in mangroves were affected by the concentration of condensed tannins in leaves and decreased from seaward to landward. This result was consistent with our finding that leaf-feeding crabs were influenced by the C/N ratio in leaves and decreased from low to high tidal zone.…”

Section: Relationship Between the C/n Ratio And Food Contribution Of ...mentioning

confidence: 99%

Tidal zone effects on the diet composition of leaf-eating crabs in natural mangrove communities: a stable isotope analysis

Lu,

Gu,

Zhang

et al. 2024

Front. Mar. Sci.

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BackgroundIn natural mangrove communities, mangrove species are often distributed zonally. Leaf-eating crabs are one of the most abundant and iconic arboreal brachyurans in mangrove forests, but variation in the composition of crab diets in different mangrove tidal zones is unknown.MethodsTo determine the contributions of mangrove leaves and other organic carbon (C) sources to leaf-eating crab diets, dual stable C and nitrogen (N) isotope signatures (δ13C and 1δ5N) were used in a Bayesian stable isotope mixing model. We conducted experiments at various tidal levels in the Dongzhaigang Bay National Natural Reserve in China. We analyzed δ13C and δ15N of leaf-eating crabs, mangrove leaves, sediment organic matter (SOM), and animal tissues (prey).ResultsThe food composition of the dominant crab species, Parasesarma continentale, exhibited significant differences among the four tidal zones. From the margin to the high tide zone, the main food source shifted from predominantly mangrove leaves and SOM to primarily SOM and animal tissues. We observed a significant negative relationship between the C/N ratios of mangrove leaves and the proportion of leaves consumed by leaf-eating crabs. Additionally, as the tidal level increased, the C/N ratio of mangrove leaves also increased, whereas the proportion of leaves consumed by crabs decreased.ConclusionLeaf-eating crab diets vary significantly across tidal zones, highlighting the importance of considering tidal zone differentiation when studying consumer diets in mangrove ecosystems.

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Section: Relationship Between the C/n Ratio And Food Contribution Of ...mentioning

confidence: 99%

Tidal zone effects on the diet composition of leaf-eating crabs in natural mangrove communities: a stable isotope analysis

Lu,

Gu,

Zhang

et al. 2024

Front. Mar. Sci.

View full text Add to dashboard Cite

show abstract

Relationship between herbivory and leaf traits in mangroves on Iriomote Island, southern Japan

Cited by 1 publication

References 60 publications

Tidal zone effects on the diet composition of leaf-eating crabs in natural mangrove communities: a stable isotope analysis

Tidal zone effects on the diet composition of leaf-eating crabs in natural mangrove communities: a stable isotope analysis

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