Feeding Ecology of Osteoglossum bicirrhosum (Osteoglossiformes: Osteoglossidae) in a Central Amazon Reserve.

IF 1.1 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Anais da Academia Brasileira de Ciencias Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI:10.1590/0001-3765202520241121

Paulo Henrique L DE Freitas, Marcia Regina F M Bussons, Iurych Nicholau B Bussons, Fernanda Victoria N Dias, Lucas M Garcês, Elcimar S Sousa, Adriano T DE Oliveira

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Abstract

Studies determining the feeding habits of fish are essential for understanding the relationships between fauna components and other aquatic organisms. This study aimed to evaluate the feeding habits of the Arowana Osteoglossum bicirrhosum in the Piranha Sustainable Development Reserve, located in the middle Solimões River, Amazonas state. The research covered different phases of the flood pulse (recession, flooding, flood peak, and dry phase) from September 2015 to May 2016. One hundred stomach samples were collected, with an average standard weight and length of 684.81 ± 257.73g and 44.92 ± 5.91cm, respectively, showing a high Pearson correlation coefficient (p= 0.9373905). Stomach content analysis revealed that 76% of the samples contained food, with 72% consisting of arthropods, 13% plant remains, 10% fish, 3% reptiles, and 2% mammals. The alternation of periods influenced the bioavailability of food in the aquatic environment, with arthropods, mainly insects, being identified as the primary food source for the Arowana. This indicates a generalist and opportunistic feeding behavior with a diet tending towards insectivory.

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亚马逊中部保护区双颊骨舌蝗摄食生态学研究。

确定鱼类摄食习性的研究对于理解动物群组成和其他水生生物之间的关系至关重要。本研究旨在评估位于亚马逊州Solimões河中游水虎鱼可持续发展保护区的龙鱼骨舌鱼的摄食习性。研究涵盖了2015年9月至2016年5月的洪水脉冲不同阶段（退潮期、洪峰期、洪峰期和枯水期）。采集胃标本100只，平均标准体重为684.81±257.73g，平均标准体重为44.92±5.91cm， Pearson相关系数较高（p= 0.9373905）。胃内容物分析显示，76%的样本含有食物，其中72%为节肢动物，13%为植物残骸，10%为鱼类，3%为爬行动物，2%为哺乳动物。周期的交替影响了水生环境中食物的生物利用度，节肢动物，主要是昆虫，被确定为龙鱼的主要食物来源。这表明一种多面手和机会主义的摄食行为，其饮食倾向于食虫。

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来源期刊

Anais da Academia Brasileira de Ciencias 综合性期刊-综合性期刊

CiteScore

2.20

自引率

0.00%

发文量

347

审稿时长

1 months

期刊介绍： The Brazilian Academy of Sciences (BAS) publishes its journal, Annals of the Brazilian Academy of Sciences (AABC, in its Brazilianportuguese acronym ), every 3 months, being the oldest journal in Brazil with conkinuous distribukion, daking back to 1929. This scienkihic journal aims to publish the advances in scienkihic research from both Brazilian and foreigner scienkists, who work in the main research centers in the whole world, always looking for excellence. Essenkially a mulkidisciplinary journal, the AABC cover, with both reviews and original researches, the diverse areas represented in the Academy, such as Biology, Physics, Biomedical Sciences, Chemistry, Agrarian Sciences, Engineering, Mathemakics, Social, Health and Earth Sciences.