Advances in feeding ecology of<i>Acartia</i>

Simin, 胡思敏 Hu; Sheng, 刘胜 Liu; Tao, 李涛 Li; Zhiling, 郭志灵 Guo

doi:10.5846/stxb201108091167

Cited by 2 publications

(1 citation statement)

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“…Acartia erythraea was selected for this study because it is an important coastal copepod in the South China Sea (Liu et al, 2010). Acartia erythraea is one of the dominant copepod species in subtropical (e.g., Daya Bay) and tropical (e.g., Sanya Bay) waters in summer and fall (Hu et al, 2012). Previous studies have shown that elevated temperatures clearly affect the feeding behavior of Acartia (Henriksen et al, 2012); however, their response to extreme thermal stress remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Feeding response of the tropical copepod Acartia erythraea to short-term thermal stress: more animal-derived food was consumed

Liu

Wang

et al. 2018

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The objective of this study was to explore the feeding response of tropical copepods to short-term thermal shock and provide insight into the potential impact of coastal power plants on the trophic dynamics of tropical coastal ecosystems. Feeding experiments were conducted at three different temperatures (29 °C, 33 °C, and 35 °C) using the copepod Acartia erythraea, collected from Sanya Bay, China. The grazing rate of A. erythraea decreased dramatically in the high temperature treatment. Analysis of 18S rDNA clone libraries revealed that the diet of copepods from different treatments was mainly comprised of diatoms, metazoans, and protozoans; A. erythraea exhibited an obvious feeding preference shift with temperature, with a change from a diatom-dominated diet at 29 °C to a metazoan-dominated diet at 35 °C, and the omnivory index shifted from 0.1 to 2.84 correspondingly. Furthermore, A. erythraea showed a positive feeding response to plant food (i.e., phytoplankton and land plants) in the control treatment (29 °C), but a positive response to animal prey (i.e., metazoans and protozoans) at temperatures exceeding 33 °C, as evaluated by the Ivlev’s selectivity index. Our results suggest that copepods could regulate their food intake by considering their energy demands when exposed to short-term thermal stress, which might influence the pathway of materials moving up the trophic system. However, further studies are required to elucidate the effects of elevated temperature on feeding of different organisms in order to predict the influence of thermal pollution on the food web of tropical coastal ecosystems.

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Section: Introductionmentioning

confidence: 99%