Fish Trophic Ecology: Revealing the Responses to Global Change from Individuals to Ecosystems

A special issue of Fishes (ISSN 2410-3888).

Deadline for manuscript submissions: closed (30 April 2025) | Viewed by 512

Special Issue Editors


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Guest Editor
Quintay Marine Research Center, Universidad Andres Bello, Viña del Mar 25310125, Chile
Interests: fish biology; fisheries ecology; bio-tracers applied to fisheries; trophic ecology

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Guest Editor
1. Instituto del Mar del Perú, Esquina Gamarra y Gral. Valle s/n, La Punta 07021, Peru
2. Facultad de Ciencias Biológicas, Universidad Científica del Sur, Antigua Panamericana Sur 19, Villa EL Salvador 15067, Peru
Interests: stomach contents analysis; stable isotopes; trophic indicators; multivariate statistics

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Guest Editor
1. Fisheries and Marine Biology Department, Instituto Politécnico Nacional, La Paz 23096, Baja California Sur, Mexico
2. Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, La Paz 23096, Baja California Sur, Mexico
Interests: sharks and ray biology; stable isotopes; toxicology; trophic ecology

Special Issue Information

Dear Colleagues,

Fish trophic ecology, which studies feeding relationships and energy flow in aquatic ecosystems, is vital for understanding the impact of global change. By analyzing how climate change, pollution, and other factors alter fish diets, behavior, and energy transfer, researchers can reveal their cascading effects on aquatic communities.

This Special Issue will delve into fish trophic ecology in the context of global change, focusing on how environmental alterations impact fish feeding relationships and energy flow across different scales. It aims to synthesize existing knowledge and present new research on the consequences global change has on fish feeding, trophic interactions, and ecosystem stability. This Special Issue will bridge the gap between theory and practice by offering management and conservation strategies based on scientific evidence, thus fostering a comprehensive approach to protect fish biodiversity and ecological resilience.

Dr. Sebastian A. Klarian
Dr. Pepe Espinoza
Prof. Dr. Felipe Galván-Magaña
Guest Editors

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Keywords

  • stomach contents
  • stable isotopes
  • fatty acids
  • diet DNA
  • heavy metals
  • digestive physiology
  • food consumption
  • molecular bioenergetics
  • ecosystems analysis
  • ecosystem health

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Published Papers (2 papers)

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Research

12 pages, 1676 KiB  
Article
Diet Composition and Feeding Intensity of Four-Spotted Megrim, Lepidorhombus boscii (Risso, 1810), in the Eastern Adriatic Sea
by Nika Ugrin, Mate Šantić, Željka Trumbić and Svjetlana Krstulović Šifner
Fishes 2025, 10(5), 211; https://doi.org/10.3390/fishes10050211 - 5 May 2025
Abstract
Feeding habits of the four-spotted megrim, Lepidorhombus boscii, from the eastern Adriatic Sea were examined. A total of 1070 individuals collected using a bottom trawl net between July 2020 and June 2021 were analyzed. A high percentage of empty stomachs (63.27%) was [...] Read more.
Feeding habits of the four-spotted megrim, Lepidorhombus boscii, from the eastern Adriatic Sea were examined. A total of 1070 individuals collected using a bottom trawl net between July 2020 and June 2021 were analyzed. A high percentage of empty stomachs (63.27%) was recorded. The food composition proved that L. boscii is a carnivorous species. The identified prey of L. boscii was divided into seven groups: Teleostei, Bivalvia, Gastropoda, Cephalopoda, Isopoda, Mysida, and Decapoda. Decapods were the most important prey (%IRI = 58.18), followed by cephalopods (%IRI = 10.93). At the species level, the most important prey were the decapods Parapeneus longirostris (%IRI = 11.48) and Goneplax rhomboides (%IRI = 5.92). Statistically significant seasonal variations in diet were recorded; decapods dominated in spring, summer, and winter, whereas cephalopods prevailed in autumn. There were no statistically significant differences in the food composition between the three size categories. Decapods were the most important prey in all size categories (%IRI > 50). The lowest feeding intensity, as well as the highest percentage of empty stomachs, was recorded in winter, which is also the main spawning season of this species in the Adriatic Sea. Full article
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18 pages, 2312 KiB  
Article
Feeding Habits of Mene maculata (Teleostei: Menidae) in the Southwestern Waters of Taiwan, Western Pacific Ocean
by Yi-Chen Wang, Ming-An Lee and Jia-Sin He
Fishes 2025, 10(4), 182; https://doi.org/10.3390/fishes10040182 - 16 Apr 2025
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Abstract
This study investigated the feeding habits of moonfish (Mene maculata) in the waters of southwestern Taiwan in the Western Pacific Ocean using commercial trawling nets and Taiwanese purse seines. For this, we analyzed the body size and stomach content of moonfish [...] Read more.
This study investigated the feeding habits of moonfish (Mene maculata) in the waters of southwestern Taiwan in the Western Pacific Ocean using commercial trawling nets and Taiwanese purse seines. For this, we analyzed the body size and stomach content of moonfish specimens collected from the study area between January and December 2023. The length–weight relationship revealed hypoallometric growth patterns in both male and female specimens, with allometric coefficients of 2.6574 and 2.7219, respectively. Stomach content analysis indicated that the specimens primarily fed on Calanoida (zooplankton; %PSIRI = 36.79) and Benthosema pterotum (fish; %PSIRI = 19.23). Dietary composition varied with body size and sampling time. Larger individuals consumed higher proportions of fish. The percentage of empty stomachs was high, likely attributable to the fishing gear used and sampling time. Based on the results of this study, it is speculated that moonfish feed mainly before early morning or at other times during the day. Full article
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