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Understanding the feeding ecology of anchovies in the southern waters of Korea is crucial for improving ecosystem management. However, to date, few studies have examined seasonal changes in the diet of Pacific anchovy,    Engraulis   japonicus    Temminck et Schlegel, 1846, in Korean waters, with the majority of these focusing on the larval and adult stages. The presently reported study provides updates on the feeding habits of    E.   japonicus    off the southern coast of Korea. We analyzed 347 individuals. One-way analysis of similarity was performed to evaluate the differences in diet composition among size classes and seasons of    E.   japonicus   , and correspondence analysis was conducted using the matrix of the percentage by number (% N ) data for prey with occurrence of less than 10% to determine the distribution of prey across all size classes and each season. The diet of    E.   japonicus    was investigated according to season and four size classes. The fork length of these specimens ranged from 5.4 to 14.1 cm. A total of 55 prey taxa of varying sizes between 0.33 mm (diatom    Coscinodiscus    spp.) and 5.8 mm (fish larvae) were recorded. Anchovies were exclusively planktivorous, and copepods were the most common prey, comprising 82.1% of the identified food items and 84.3% of anchovy stomach contents analyzed. However, their occurrence and abundance varied according to season and Pacific anchovy size class. According to the percentage of the index of relative importance (% IRI ), the most important prey items were the copepods    Calanus   sinicus    (48.0%),    Paracalanus   orientalis    (31.7%), bivalve larvae (5.8%),    Ditrichocorycaeus   affinis    (4.2%), and calanoid copepods (2.4%). Analysis of similarities and similarity percentage analysis indicated that a distinct diet of Pacific anchovy in the southern waters of Korea is potentially driven by differences in hydrological conditions. Correspondence analysis revealed that anchovies had the most significant impact on the differences between size classes. The results deepen our understanding of prey species diversity and intraspecific food competition off the southern coast of Korea.

acta ichthyologica et piscatoria

﻿Feeding habits of Pacific anchovy,    Engraulis   japonicus    (  Actinopterygii  :   Clupeiformes  :   Engraulidae  ), captured off the southern coasts of Korea

﻿Feeding habits of Pacific anchovy, Engraulis japonicus ( Actinopterygii : Clupeiformes : Engraulidae ), captured off the southern coasts of Korea

Feeding habits of Pacific anchovy, Engraulis japonicus ( Actinopterygii : Clupeiformes : Engraulidae ), captured off the southern coasts of Korea