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猎物种类和丰度会影响多食性海蛞蝓的生长和光合性能。

Prey species and abundance affect growth and photosynthetic performance of the polyphagous sea slug .

作者信息

Cartaxana Paulo, Morelli Luca, Cassin Elena, Havurinne Vesa, Cabral Miguel, Cruz Sónia

机构信息

ECOMARE - Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Aveiro 3810-193, Portugal.

出版信息

R Soc Open Sci. 2023 Aug 30;10(8):230810. doi: 10.1098/rsos.230810. eCollection 2023 Aug.

DOI:10.1098/rsos.230810
PMID:37650060
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10465201/
Abstract

Some sacoglossan sea slugs steal functional macroalgal chloroplasts (kleptoplasts). In this study, we investigated the effects of algal prey species and abundance on the growth and photosynthetic capacity of the tropical polyphagous sea slug . Recently hatched sea slugs fed and acquired chloroplasts from the macroalga but not from . However, adult sea slugs were able to switch diet to , rapidly replacing the great majority of the original kleptoplasts. When fed with , higher feeding frequency resulted in significantly higher growth and kleptoplast photosynthetic yield, as well as a slower relative decrease in these parameters upon starvation. Longevity of -derived chloroplasts in was over twofold that of . Furthermore, significantly lower relative weight loss under starvation was observed in sea slugs previously fed on than on . This study shows that functionality and longevity of kleptoplasts in photosynthetic sea slugs depend on the origin of the plastids. Furthermore, we have identified as a donor of photosynthetically efficient chloroplasts common to highly specialized monophagous and polyphagous sea slugs capable of long-term retention, which opens new experimental routes to unravel the unsolved mysteries of kleptoplasty.

摘要

一些裸鳃亚目海蛞蝓会窃取功能性大型藻类叶绿体（盗食质体）。在本研究中，我们调查了藻类猎物种类和丰度对热带多食性海蛞蝓生长和光合能力的影响。刚孵化的海蛞蝓以大型藻类为食并获取叶绿体，但不是从[未提及的藻类]获取。然而，成年海蛞蝓能够转而以[未提及的藻类]为食，迅速替换绝大多数原来的盗食质体。当以[未提及的藻类]为食时，更高的摄食频率导致显著更高的生长和盗食质体光合产量，以及在饥饿时这些参数相对下降更慢。[未提及的藻类]来源的叶绿体在[海蛞蝓种类未提及]中的寿命是[另一种海蛞蝓种类未提及]中的两倍多。此外，先前以[未提及的藻类]为食的海蛞蝓在饥饿时观察到的相对体重损失明显低于以[另一种藻类未提及]为食的海蛞蝓。本研究表明，光合海蛞蝓中盗食质体的功能和寿命取决于质体的来源。此外，我们已确定[未提及的藻类]是高度特化的单食性和多食性海蛞蝓共有的光合高效叶绿体的来源，这些海蛞蝓能够长期保留叶绿体，这为解开盗食质体未解决的谜团开辟了新的实验途径。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/4e898facfbae/rsos230810f08.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/866c6bbeacf9/rsos230810f01.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/fcd36dd0a372/rsos230810f04.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/8603f0101199/rsos230810f06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/47bb41ee3843/rsos230810f07.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/4e898facfbae/rsos230810f08.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/866c6bbeacf9/rsos230810f01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/de95f96609b5/rsos230810f02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/dcda7b89d4ad/rsos230810f03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/fcd36dd0a372/rsos230810f04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/723c975b1c46/rsos230810f05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/8603f0101199/rsos230810f06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/47bb41ee3843/rsos230810f07.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eac/10465201/4e898facfbae/rsos230810f08.jpg

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Animals (Basel). 2021 Nov 5;11(11):3157. doi: 10.3390/ani11113157.
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Ultraviolet screening by slug tissue and tight packing of plastids protect photosynthetic sea slugs from photoinhibition.蛞蝓组织的紫外线屏蔽作用和质体的紧密包装可保护光合海蛞蝓免受光抑制。
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