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首页> 外文期刊>Algae >Effects of temperature on the growth and ingestion rates of the newly described mixotrophic dinoflagellate Yihiella yeosuensis and its two optimal prey species
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Effects of temperature on the growth and ingestion rates of the newly described mixotrophic dinoflagellate Yihiella yeosuensis and its two optimal prey species

机译：温度对新描述的混纺型丁胺酸盐的生长和摄取率的影响yihiella yeosuensis及其两种最佳猎物物种

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Water temperature is known to affect the growth and feeding of marine dinoflagellates. Each dinoflagellate species grows well at a certain optimal temperature but dies at very cold and hot temperatures. Thus, changes in water temperatures driven by global warming and extremely high or low temperatures can affect the distribution of dinoflagellates. Yihiella yeosuensis is a mixotrophic dinoflagellate that can feed on only the cryptophyte Teleaulax amphioxeia and the chlorophyte Pyramimonas sp. Furthermore, it grows fast mixotrophically but rarely grows photosynthetically. We explored the direct and indirect effects of water temperature on the growth and ingestion rates of Y. yeosuensis feeding on T. amphioxeia and the growth rates of T. amphioxeia and Pyramimonas sp. under 7 different water temperatures (5-35°C). Both the autotrophic and mixotrophic growth rates of Y. yeosuensis on T. amphioxeia were significantly affected by temperature. Under the mixotrophic and autotrophic conditions, Y. yeosuensis survived at 10-25°C, but died at 5°C and ≥30°C. The maximum mixotrophic growth rate of Y. yeosuensis on T. amphioxeia (1.16 d-1) was achieved at 25°C, whereas the maximum autotrophic growth rate (0.16 d-1) was achieved at 15°C. The maximum ingestion rate of Y. yeosuensis on T. amphioxeia (0.24 ng C predator-1 d-1) was achieved at 25°C. The cells of T. amphioxeia survived at 10-25°C, but died at 5 and ≥30°C. The cells of Pyramimonas sp. survived at 5-25°C, but died at 30°C. The maximum growth rate of T. amphioxeia (0.72 d-1) and Pyramimonas sp. (0.75 d-1) was achieved at 25°C. The abundance of Y. yeosuensis is expected to be high at 25°C, at which its two prey species have their highest growth rates, whereas Y. yeosuensis is expected to be rare or absent at 5°C or ≥30°C at which its two prey species do not survive or grow. Therefore, temperature can directly or indirectly affect the population dynamics and distribution of Y. yeosuensis.
机译：已知水温影响海洋林曲素蛋白的生长和喂养。每种含堇青树的物种在一定的最佳温度下生长良好，但在非常冷和热的温度下模具。因此，由全球变暖和极高或低温驱动的水温的变化会影响丁蛋白的分布。 yihiella yeosuensis是一种混合营养的丁蛋白，可仅在Cryptophyte Teleaulax Amphioxeia和叶绿素Pyramomonas sp上喂食。此外，它生长快速混合，但很少生长光合作用。我们探讨了水温对Y.育核饲养的生长和摄取率的直接和间接影响，饲喂于T.Amphioxeia和T.Amphioxeia和Pyrammonas Sp的生长速率。在7个不同的水温下（5-35°C）。 Y. yeosuensis对T.Amphioxeia的自养和混合营养生长速率均受温度显着影响。在混纺营养和自养的条件下，Y. Yeosuensis在10-25℃下存活，但在5°C和≥30℃下死亡。在25℃下达到Amphioxeia（1.16d-1）上的Y. Yeosuensis的最大混合营养生长速率，而在15℃下达到最大自养生长速率（0.16d-1）。在25℃下达到Amphioxeia（0.24ng C捕食者-1d-1）的Y. Yeosuensis的最大摄取率。 T.Amphioxeia的细胞在10-25℃下存活，但在5和≥30℃下死亡。 Pyrammonas sp的细胞。在5-25°C下存活，但在30°C下死亡。 T.Amphioxeia（0.72d-1）和Pyrammonas sp的最大增长率。 （0.75d-1）在25℃下实现。 y.yeosuensis的丰度预计在25°C下高，其两种猎物物种具有最高的增长率，而Y.Yeosuensis预计在5°C或≥30°C时罕见或不存在它的两种猎物物种没有生存或生长。因此，温度可以直接或间接地影响Y. Yeosuensis的人口动态和分布。

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