The critical role of arachidonic acid on molting in spiders.

IF 2 2区 生物学 Q2 ZOOLOGY
Current Zoology Pub Date : 2024-09-24 eCollection Date: 2025-06-01 DOI:10.1093/cz/zoae056
Lelei Wen, Lieping Wang, Zhigan Wang, Haixin Zhang, Lang Hu, Baoyu Peng, Yu Peng, Xiaoguo Jiao, Changchun Li
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Abstract

Spiders frequently suffer abnormal molting and subsequent death when sustained on a monotypic diet of fruit flies Drosophila melanogaster. The fruit flies lack arachidonic acid (AA), a nutrient that may be critical for successful molting of spiders. To test this hypothesis, we compared the survival rates of juvenile wolf spiders, Pardosa pseudoannulata, fed on three kinds of diets, midges (Tendipes sp.), fruit flies enriched in AA and fruit flies lacking in AA. In addition, we analyzed the fatty acid composition of spiders feeding on midges and fruit flies enriched in AA and their prey. Juvenile spiders fed on midges and AA-enriched fruit flies reached full maturity without molting issues, whereas nearly all spiders fed the flies lacking in AA did not survive. Among the 35 different fatty acids, only the AA levels in both prey and spiders correlated positively with spider survival. Our findings provide compelling evidence that AA is crucial for the survival and molting of P. pseudoannulata.

Abstract Image

Abstract Image

Abstract Image

花生四烯酸在蜘蛛蜕皮中的关键作用。
当以果蝇为食时,蜘蛛经常会发生异常的换羽和随后的死亡。果蝇缺乏花生四烯酸(AA),这种营养物质可能对蜘蛛成功换羽至关重要。为了验证这一假设,我们比较了三种食材——蠓、富含AA的果蝇和缺乏AA的果蝇——饲养的狼蛛幼蛛Pardosa pseudoannulata的存活率。此外,我们还分析了以富含AA的蠓和果蝇为食的蜘蛛及其猎物的脂肪酸组成。以蠓和富含AA的果蝇为食的幼蛛完全成熟,没有蜕皮问题,而几乎所有以缺乏AA的果蝇为食的蜘蛛都无法存活。在35种不同的脂肪酸中,只有猎物和蜘蛛体内的AA水平与蜘蛛的存活率呈正相关。我们的研究结果提供了令人信服的证据,证明AA对假环棘猴的生存和蜕皮至关重要。
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来源期刊
Current Zoology
Current Zoology Agricultural and Biological Sciences-Animal Science and Zoology
CiteScore
3.20
自引率
9.10%
发文量
111
审稿时长
6 weeks
期刊介绍: About the Journal Current Zoology (formerly Acta Zoologica Sinica, founded in 1935) is an open access, bimonthly, peer-reviewed international journal of zoology. It publishes review articles and research papers in the fields of ecology, evolution and behaviour. Current Zoology is sponsored by Institute of Zoology, Chinese Academy of Sciences, along with the China Zoological Society.
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