Adaptive significance of light and food for a kleptoplastic sea slug: implications for photosynthesis

Adaptive significance of light and food for a kleptoplastic sea slug: implications for photosynthesis
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光和食物对盗贼海蛞蝓的适应性意义:对光合作用的影响

DOI:
10.1007/s00442-020-04779-6
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发表时间:
2020
期刊:
影响因子:
2.7
通讯作者:
Yusa Y
Yusa Y
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Shiroyama H;Mitoh S;Ida TY;Yusa Y

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囊舌海蛞蝓可以从它们的藻类食物中“偷走”叶绿体,并将其用于光合作用(kleptoplasty)。虽然已经表明,光可能通过光合作用对一些sacoglossans的生存和身体大小保持有积极的影响,但尚不清楚光是否会影响它们的适应性成分,如后代数量或后代大小。此外,光的影响是否会延续到sacoglossans的一生还没有被探索过。为了评估光照强度和食物供应对健身组件的长期影响,我们进行了为期15.9周的实验室实验,使用Elysia atroviridisunder两种光照强度(低或高)和两种食物条件(有或没有食物)的组合。产卵的总数量是更大的存在下,强光和食物比在其他条件下,这表明光强度和食物的可用性的积极影响。孵化时的壳高在强光和食物存在下也最大。幼虫饲养实验表明,不同条件下孵化时的大小差异对应于1.19-1.93天的生长和7.9-18.1%的存活率增加。因此,积极的影响,光和食物的健身组件延长的寿命ofE。深绿色的
Sacoglossan sea slugs can ‘steal’ chloroplasts from their algal food and use them for photosynthesis (kleptoplasty). Although it has been shown that light has positive effects on survival and body size retention of some sacoglossans likely through photosynthesis, it is unknown whether light affects their fitness components such as number of offspring or offspring size. Moreover, whether the effects of light extend over the sacoglossans’ lifetime has been unexplored. To assess such long-term effects of light intensity and food availability on fitness components, we conducted a 15.9-week laboratory experiment usingElysia atroviridisunder a combination of two light intensities (low or high) and two food conditions (with or without food). The total number of eggs laid was greater in the presence of both strong light and food than in other conditions, suggesting positive effects of both light intensity and food availability. The shell height at hatch was also largest in the presence of strong light and food. Larval rearing experiments showed that the size difference at hatch between conditions corresponded to a 1.19–1.93 days growth and 7.9–18.1% survival increase. Thus, positive effects of light and food on the fitness components extend over the lifetime ofE. atroviridis.
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DOI: --
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