Pepe-Victoriano Renzo, Aravena-Ambrosetti Héctor, Huanacuni Jordan I, Méndez-Abarca Felipe, Godoy Karina, Álvarez Nathalia
Facultad de Recursos Naturales y Renovables, Universidad Arturo Prat, Avenida Santa María 2998, Arica 1031597, Chile.
Programa de Doctorado en Acuicultura Sostenible y Ecosistemas Marinos, Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Spain.
Animals (Basel). 2022 Apr 5;12(7):930. doi: 10.3390/ani12070930.
The trophic relationships of pelagic fishes with migratory traits such as the South Pacific Bonito, (Cuvier, 1832), have not been studied in depth in the past. The objective of the present research was to analyze the feeding habits of South Pacific Bonito by sex and to analyze a comparison between summer and autumn months in three different areas of the eastern South Pacific by applying different techniques used in trophic biology. Between December 2013 and June 2014, specimens were captured in the areas of Pozo de Lisas (Ilo, Peru), La Capilla (Arica, Chile) and Chanavayita (Iquique, Chile). The feeding dynamics and trophic composition of the diet were analyzed, as well as the feeding strategy and trophic relationships. A total of 1404 specimens were analyzed, of which 654 had stomach contents. Seven prey items were identified: (a) fish remains; (b) squid jaw remains; (c) squid gladius remains; (d) caudal fin remains; (e) ; (f) and (g) N/A (not determined). The Pozo de Lisas and La Capilla areas showed homogeneity in their prey items, while the Chanavayita area showed more diversity. Regarding the importance of prey items in the diet of in the three localities, it would be correct to state that it is a generalist species.
过去，像南太平洋狐鲣（Cuvier，1832年）这种具有洄游特性的中上层鱼类的营养关系尚未得到深入研究。本研究的目的是按性别分析南太平洋狐鲣的摄食习性，并通过应用营养生物学中使用的不同技术，分析东南太平洋三个不同区域夏季和秋季月份之间的差异。在2013年12月至2014年6月期间，在利萨斯井（秘鲁伊洛）、拉卡皮利亚（智利阿里卡）和查纳维塔（智利伊基克）地区捕获了样本。分析了饮食的摄食动态和营养成分，以及摄食策略和营养关系。总共分析了1404个样本，其中654个样本有胃内容物。确定了七种猎物：（a）鱼类残骸；（b）鱿鱼颚残骸；（c）鱿鱼内壳残骸；（d）尾鳍残骸；（e） ；（f） 和（g）未确定（未测定）。利萨斯井和拉卡皮利亚地区的猎物种类具有同质性，而查纳维塔地区的猎物种类更多样化。关于这三个地点的狐鲣饮食中猎物种类的重要性，可以正确地说它是一种广食性物种。
