Latitudinal changes in the lipid content and fatty acid profiles of juvenile female red squat lobsters (Pleuroncodes monodon) in breeding areas of the Humboldt Current System.
Latitudinal changes in the lipid content and fatty acid profiles of juvenile female red squat lobsters (Pleuroncodes monodon) in breeding areas of the Humboldt Current System.
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亨博尔德当前系统繁殖区域中少年雌性红蹲龙虾（胸膜龙龙）的脂质含量和脂肪酸谱的纬度变化。
DOI：
10.1371/journal.pone.0253314
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Urzúa Á
中科院分区：
文献类型：
--
作者：
Guzmán-Rivas F;Quispe-Machaca M;Queirolo D;Ahumada M;Urzúa Á
红龙虾Pleuroncodes monodon是一种具有高商业价值的物种，栖息在洪堡洋流系统中。在智利的沿着，有两个种群受到捕鱼业的剥削，一个位于科金博沿海，另一个位于康塞普西翁沿海。然而，这两个捕捞单位的幼鱼种群的“生物能燃料”（以脂类含量和脂肪酸分布衡量）是否存在差异，以及这些生物能化合物是否会因其繁殖区的环境参数（如温度或叶绿素a）差异而受到调节，目前尚不清楚。为了阐明这一点，我们测量了来自这两个捕捞单位的幼年雌性红龙虾内脏和肌肉的脂质含量和脂肪酸谱，特别是来自长期开发渔场附近的繁殖区：a）北方捕捞单位（NFU，从26°S到30°S）和B）南方捕捞单位（SFU，从32°S到37°S）。我们发现，在脂质含量，脂肪酸谱，饱和脂肪酸（C16：0/C18：0）的比例从这两个地点的少年女性的差异。此外，在这些龙虾的内脏和肌肉中发现的必需脂肪酸（DHA/EPA）差异显着。与来自NFU（即科金博）的雌性幼鱼相比，来自SFU（即康塞普西翁）的雌性幼鱼显示出更高的脂质含量。一致的是，来自SFU的个体具有更高的脂肪酸含量，与来自NFU的个体相比，其也被证明富含饱和和单不饱和脂肪酸。我们的研究结果对这两个地区的渔业都很重要，因为这些青少年种群是渔业开发的成年种群的新兵来源。我们的研究还有助于确定哪些人群在生物能量方面更健康或质量更好。此外，在渔业模式中更多地纳入生物能量参数，对于生态系统方法中的补充和种群评估至关重要，因为这样可以评价不同捕鱼种群的营养状况。
The red squat lobster Pleuroncodes monodon is a species of high commercial value that inhabits the Humboldt Current System. Along the Chilean coast, two populations are exploited by the fishing industry, one located off the coast of Coquimbo and the other off the coast of Concepción. Yet, it is unknown whether there are differences in the “bioenergetic fuel” (measured as lipid content and fatty acid profile) of juvenile populations of these two fishing units and whether these bioenergetic compounds can be modulated by differences in the environmental parameters (such as temperature or chlorophyll-a) of their breeding areas. To shed some light on this, we measured the lipid content and fatty acid profiles of the viscera and muscle of juvenile female red squat lobsters from these two fishing units, specifically from breeding areas near long-exploited fishing grounds: a) the northern fishing unit (NFU, from 26°S to 30°S) and b) the southern fishing unit (SFU, from 32°S to 37°S). We found differences in the lipid content, fatty acid profiles, and ratios of saturated fatty acids (C16:0/C18:0) of juvenile females from these two locations. In addition, the essential fatty acids (DHA/EPA) found in the viscera versus the muscle of these lobsters varied significantly. Juvenile females from the SFU (i.e. Concepción) showed a higher lipid content compared to the juvenile females from the NFU (i.e. Coquimbo). Consistently, individuals from the SFU had a higher content of fatty acids, which also proved to be richer in saturated and monounsaturated fatty acids compared to those from the NFU. Our results are important for the fisheries in both areas because these juvenile populations are the source of new recruits for the adult populations that are exploited by the fishing industry. Our study also aids in determining which populations are healthier or of better quality in bioenergetic terms. Furthermore, increasing the incorporation of bioenergetic parameters in fishery models is essential for the recruitment and stock assessment within an ecosystem approach, since it allows for the evaluation of the nutritional condition of different fishing populations.
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影响因子：
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