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Tsurpalo, Alexandra P.; Костина, Е. Э.

doi:10.1023/a:1022823819872

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…As a direct indicator of trophic level, the d 15 N of M. senile indicates that it has a high trophic level, which is consistent with previous research (Liu et al, 2020). Paralyzed by the anemone's filaments, the prey is captured by the tentacles and transported to the mouth (Tsurpalo and Kostina, 2003). With the increase in body weight, the d 15 N of M. senile showed an increasing trend, which is consistent with many marine organisms (Cushing, 1975;Caddy et al, 1998).…”

Section: Discussionsupporting

confidence: 66%

“…Therefore, the species passing through or near the anemone's habitat have a more significant impact on the anemone's feeding than its body size (Anthony, 1997). This also explains the diverse diet of M. senile, including zooplankton, mollusks, crustaceans and other invertebrates, and even fish (Sebens and Koehl, 1984;Tsurpalo and Kostina, 2003).…”

Section: Discussionmentioning

confidence: 99%

“…The simmr model allows for uncertainties associated with isotopic signatures and diet-to-tissue discrimination factors, which were set to 1 ± 0.3‰ and 3 ± 0.3‰ for d 13 C and d 15 N, respectively (Parnell et al, 2013;Phillips et al, 2014). Potential prey items used in the model were derived from coelenteron content analysis, as well as a prior knowledge about their feeding preferences (Tsurpalo and Kostina, 2003;Liu et al, 2020). To quantify the proportion of different food resources, prey items with similar taxonomic status were grouped as a potential food resource, and the mean ± SD of their d 13 C and d 15 N values was calculated.…”

Section: Contribution Of Different Food Resources To M Senilementioning

confidence: 99%

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Cascade effects of seafloor litter on benthic ecosystems in the northern Yellow Sea

2023

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The accumulation of seafloor litter changes the habitats of benthic organisms and thus affects their spatial distribution. Previous studies suggested that the accumulation of seafloor litter might contribute to the bloom of Metridium senile fimbriatum, given that seafloor litter could serve as “vectors” for M. senile dispersal and provide with “natural habitat” for their settlement. As a common fouler and invader, M. senile bloom will inevitably affect the benthic ecosystems. The cascading effects of seafloor litter on benthic ecosystems can be explored by studying the interactions between this litter-associated anemone and other co-occurred species. Therefore, this study uses stable isotope analysis to study the food composition of M. senile attached to the seafloor litter and the niche relationship with co-occurred species. First, by comparing the stable isotope ratios of the pedal disc and tentacle of M. senile, it was found that the δ15N of the foot disc is more stable than that of the tentacle, so the pedal disc was chosen as the sampling tissue. The mean δ13C value of M. senile was -19.34 ± 0.86‰, which ranged from -22.30‰ to -18.17‰. For δ15N, the mean value was 12.02 ± 0.95‰, which ranged from 9.22‰ to 13.31‰. Then, we quantified the contribution of the potential food resources of M. senile using the SIMMR model. M. senile has the highest feeding proportion to crustaceans, followed by juvenile fish, zooplankton and other macrobenthos. Meanwhile, M. senile has high uncertainty in the feeding proportion of crustaceans and juvenile fish. In addition, the trophic niche overlap between different functional groups was calculated by the SIBER model, and the results showed that the isotopic niche of M. senile was overlapped with different functional groups, ranging from 34.29 to 35.25%. Therefore, this study suggests that M. senile, as litter-associated carnivorous anemone, interacts with other components in the ecosystems through predation and competition, which also reveals the cascade effect of seafloor litter on the benthic ecosystems of the northern Yellow Sea.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Contribution Of Different Food Resources To M Senilementioning

confidence: 99%

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Cascade effects of seafloor litter on benthic ecosystems in the northern Yellow Sea

2023

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“…For example, Acuña et al (2001) observed that Anthothoe chilensis feeds mainly on gammarid crustaceans that are abundant during the summer, but feeds on pycnogonids, cirratulid polychaetes and caprellid crustaceans during the other seasons. Studies have also shown that the diet of one species may vary between different locations (Kruger and Griffiths 1998;Tsurpalo and Kostina 2003;Davenport et al 2011), or even between different depths at a same site (Chintiroglou and Koukouras 1992). These findings have led authors to suggest that the diet of sea anemones reflects the prey availability in the communities they inhabit (Chintiroglou and Koukouras 1992;Tsurpalo and Kostina 2003).…”

Section: Introductionmentioning

confidence: 99%

Diet of the sea anemone Anthopleura nigrescens: composition and variation between daytime and nighttime high tides

2014

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Background: The diverse feeding habits of sea anemones have led them to be classified as opportunistic polyphagous predators. However, most studies have focused on the diet of temperate sea anemones, and little is known about the trophic ecology of tropical species and their role in tropical ecosystems. We studied the diet of the intertidal sea anemone Anthopleura nigrescens by examining the gut contents of specimens collected at two sites on Costa Rica's Pacific coast, testing for differences in prey items captured between daytime and nighttime high tides. Results: We found 25 prey items including: mollusks, crustaceans, annelids, insects and eggs. Juvenile bivalves, barnacle cyprids, and copepods were the main prey items. The anemones at Playa Dominical captured significantly more juvenile bivalves during nighttime high tides, and those at Mata de Limón captured more cyprids during daytime high tides. Conclusions: This study shows that A. nigrescens is an opportunistic polyphagous predator, like most of its temperate counterparts.

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Biological Evolutionary Lineages in Marine Habitats of the Phanerozoic

Knoflacher

2024

Relativity of Evolution

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Cited by 7 publications

References 11 publications

Cascade effects of seafloor litter on benthic ecosystems in the northern Yellow Sea

Cascade effects of seafloor litter on benthic ecosystems in the northern Yellow Sea

Diet of the sea anemone Anthopleura nigrescens: composition and variation between daytime and nighttime high tides

Biological Evolutionary Lineages in Marine Habitats of the Phanerozoic

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