Asset Details
Do you wish to reserve the book?
Ecological Niche Changes of Two Sympatric Species (Pennahia argentata and Larimichthys polyactis) Revealed by Bulk and Compound Specific Isotope Analyses
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Ecological Niche Changes of Two Sympatric Species (Pennahia argentata and Larimichthys polyactis) Revealed by Bulk and Compound Specific Isotope Analyses
Do you wish to request the book?
Ecological Niche Changes of Two Sympatric Species (Pennahia argentata and Larimichthys polyactis) Revealed by Bulk and Compound Specific Isotope Analyses
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Ecological Niche Changes of Two Sympatric Species (Pennahia argentata and Larimichthys polyactis) Revealed by Bulk and Compound Specific Isotope Analyses
2025
Overview
Sympatric species in marine ecosystems often share habitats and food resources, leading to niche competition. We performed ecological niche width estimation based on bulk carbon (δ13C) and nitrogen (δ15N) isotopes and trophic position estimation via compound‐specific isotope analysis (CSIA) of amino acids to compare ecological interspecific competition between two sympatric fish species, Pennahia argentata and Larimichthys polyactis in Gwangyang Bay, South Korea. Moreover, ontogenetic niche changes were investigated by size classification for each species. The δ13C and δ15N values in P. argentata showed no significant size‐related differences (p > 0.1), while L. polyactis exhibited significant variation (p < 0.001), indicating different ontogenetic niche shifts between two sympatric species. Trophic positions (TPGlu/Phe) estimates based on nitrogen isotopic composition of glutamic acid (δ15NGlu) and that of phenylalanine (δ15NPhe) were consistent across groups (3.53–3.62), indicating similar diet consumption. However, we found lower δ15NPhe values in large L. polyactis suggesting assimilated prey from distant marine areas before migrating into the study site. These findings demonstrate the utility of combining bulk stable isotope analysis and amino acid‐specific CSIA to disentangle dietary patterns and habitat use in mobile fish species. This study provides fundamental information for more targeted and ecological management strategies under variable environmental conditions by contrasting ontogenetic niche shifts and habitat‐driven isotopic variation between two sympatric species. We investigated trophic interactions between two sympatric fish species, Pennahia argentata and Larimichthys polyactis, using bulk and compound‐specific stable isotope analyses. CSIA of amino acids revealed similar trophic positions but distinct δ15N baselines, indicating ontogenetic niche shifts and offshore migration patterns. Our findings demonstrate the utility of CSIA in resolving fine‐scale ecological dynamics in coastal fish communities.
