Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding Strategies
Jumbo squid <i>Dosidicus gigas</i> play a critical role in the marine ecosystems and are an important commercial species in the East Pacific. Generally, three size groups have been distinguished on the basis of the mantle length (ML) of an adult. Here, fatty acid (FA) analyses of muscle...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/2410-3888/7/5/221 |
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| author | Guanyu Hu Zhenfang Zhao Bilin Liu Dongming Lin Jiawei Liang Zhou Fang Xinjun Chen |
| author_facet | Guanyu Hu Zhenfang Zhao Bilin Liu Dongming Lin Jiawei Liang Zhou Fang Xinjun Chen |
| author_sort | Guanyu Hu |
| collection | DOAJ |
| description | Jumbo squid <i>Dosidicus gigas</i> play a critical role in the marine ecosystems and are an important commercial species in the East Pacific. Generally, three size groups have been distinguished on the basis of the mantle length (ML) of an adult. Here, fatty acid (FA) analyses of muscle tissues were used to explore the feeding strategies of <i>D. gigas</i> off the Peruvian exclusive economic zone in terms of different size groups and sexes. There was no significant difference in fatty acid composition between the small- and medium-sized groups, whereas the large-sized group differed significantly from other groups. The higher content of C20:4n6 and (C18:2n6 + C18:3n3) indicates that the large-sized group may feed more frequently in nearshore and deep waters. Furthermore, the niches of the three size groups were consistent with the results of fatty acid composition, with the large-sized group occupying the widest trophic niche, followed by the medium-sized group and then the small-sized group. In addition, there was evidence of trophic niche overlap between the small and medium groups. In terms of sexual variability of the small and medium groups, the fatty acid composition significantly differed between females and males. In terms of sexual variation of the large group, the fatty acid composition between females and males was similar, indicating that similar feeding strategies may be adopted by them. This study revealed the variability of the feeding strategies of three size groups of <i>D. gigas</i> off the Peruvian exclusive economic zone. |
| first_indexed | 2024-03-09T20:13:22Z |
| format | Article |
| id | doaj.art-29db87bea81c48ae9df1a268fa62998b |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-03-09T20:13:22Z |
| publishDate | 2022-08-01 |
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| record_format | Article |
| series | Fishes |
| spelling | doaj.art-29db87bea81c48ae9df1a268fa62998b2023-11-24T00:05:46ZengMDPI AGFishes2410-38882022-08-017522110.3390/fishes7050221Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding StrategiesGuanyu Hu0Zhenfang Zhao1Bilin Liu2Dongming Lin3Jiawei Liang4Zhou Fang5Xinjun Chen6College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaJumbo squid <i>Dosidicus gigas</i> play a critical role in the marine ecosystems and are an important commercial species in the East Pacific. Generally, three size groups have been distinguished on the basis of the mantle length (ML) of an adult. Here, fatty acid (FA) analyses of muscle tissues were used to explore the feeding strategies of <i>D. gigas</i> off the Peruvian exclusive economic zone in terms of different size groups and sexes. There was no significant difference in fatty acid composition between the small- and medium-sized groups, whereas the large-sized group differed significantly from other groups. The higher content of C20:4n6 and (C18:2n6 + C18:3n3) indicates that the large-sized group may feed more frequently in nearshore and deep waters. Furthermore, the niches of the three size groups were consistent with the results of fatty acid composition, with the large-sized group occupying the widest trophic niche, followed by the medium-sized group and then the small-sized group. In addition, there was evidence of trophic niche overlap between the small and medium groups. In terms of sexual variability of the small and medium groups, the fatty acid composition significantly differed between females and males. In terms of sexual variation of the large group, the fatty acid composition between females and males was similar, indicating that similar feeding strategies may be adopted by them. This study revealed the variability of the feeding strategies of three size groups of <i>D. gigas</i> off the Peruvian exclusive economic zone.https://www.mdpi.com/2410-3888/7/5/221<i>Dosidicus gigas</i>groupfeeding strategyfatty acidtrophic niche |
| spellingShingle | Guanyu Hu Zhenfang Zhao Bilin Liu Dongming Lin Jiawei Liang Zhou Fang Xinjun Chen Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding Strategies Fishes <i>Dosidicus gigas</i> group feeding strategy fatty acid trophic niche |
| title | Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding Strategies |
| title_full | Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding Strategies |
| title_fullStr | Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding Strategies |
| title_full_unstemmed | Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding Strategies |
| title_short | Fatty Acid Profile of Jumbo Squid (<i>Dosidicus gigas</i>) off the Peruvian Exclusive Economic Zone: Revealing the Variability of Feeding Strategies |
| title_sort | fatty acid profile of jumbo squid i dosidicus gigas i off the peruvian exclusive economic zone revealing the variability of feeding strategies |
| topic | <i>Dosidicus gigas</i> group feeding strategy fatty acid trophic niche |
| url | https://www.mdpi.com/2410-3888/7/5/221 |
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