Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition
The North American invasive fish pumpkinseed Lepomis gibbosus has been associated with some detrimental ecological consequences in some parts of its invasive range. Here, we tested the trophic interactions of pumpkinseed with the endemic stream fish Aegean chub Squalius fellowesii (‘chub’) in a Medi...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | Knowledge and Management of Aquatic Ecosystems |
| Subjects: | |
| Online Access: | https://www.kmae-journal.org/articles/kmae/full_html/2023/01/kmae230025/kmae230025.html |
| _version_ | 1797807558892716032 |
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| author | Karakuş Uğur Tarkan Ali Serhan Yalçın-Özdilek Şükran Top-Karakuş Nildeniz Partal Nurbanu Britton John Robert |
| author_facet | Karakuş Uğur Tarkan Ali Serhan Yalçın-Özdilek Şükran Top-Karakuş Nildeniz Partal Nurbanu Britton John Robert |
| author_sort | Karakuş Uğur |
| collection | DOAJ |
| description | The North American invasive fish pumpkinseed Lepomis gibbosus has been associated with some detrimental ecological consequences in some parts of its invasive range. Here, we tested the trophic interactions of pumpkinseed with the endemic stream fish Aegean chub Squalius fellowesii (‘chub’) in a Mediterranean-type water course in SW Anatolia, Turkey, using a bulk stable isotope approach (δ13C, δ15N). Seven sampling sites were able to be grouped as chub in pumpkinseed presence (n = 2) and absence (n = 3), and pumpkinseed in chub absence (n = 2). Across these groups, stable isotope metrics revealed that chub trophic (isotopic) niche size was similar in pumpkinseed presence/absence, but pumpkinseed had a larger niche in chub presence. In sites where they are co-habited, their niches showed some convergence, but with no apparent consequences for their growth or body condition, suggesting there were minimal ecological consequences of this sharing of food resources. These results suggest that the trophic consequences of this riverine invasion of pumpkinseed on this endemic chub was minimal. |
| first_indexed | 2024-03-13T06:25:24Z |
| format | Article |
| id | doaj.art-0545a5168cc44bed95cdaf304788a588 |
| institution | Directory Open Access Journal |
| issn | 1961-9502 |
| language | English |
| last_indexed | 2024-03-13T06:25:24Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Knowledge and Management of Aquatic Ecosystems |
| spelling | doaj.art-0545a5168cc44bed95cdaf304788a5882023-06-09T09:27:11ZengEDP SciencesKnowledge and Management of Aquatic Ecosystems1961-95022023-01-0104241310.1051/kmae/2023010kmae230025Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and conditionKarakuş Uğur0Tarkan Ali Serhan1https://orcid.org/0000-0001-8628-0514Yalçın-Özdilek Şükran2Top-Karakuş Nildeniz3Partal Nurbanu4Britton John Robert5Department of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman UniversityDepartment of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman UniversityDepartment of Biology, Science and Letters Faculty, Çanakkale Onsekiz Mart UniversityDepartment of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman UniversityLaboratorian and Veterinarian Health, Open and Distance Education Faculty, İstanbul UniversityDepartment of Life and Environmental Sciences, Faculty of Science and Technology Bournemouth UniversityThe North American invasive fish pumpkinseed Lepomis gibbosus has been associated with some detrimental ecological consequences in some parts of its invasive range. Here, we tested the trophic interactions of pumpkinseed with the endemic stream fish Aegean chub Squalius fellowesii (‘chub’) in a Mediterranean-type water course in SW Anatolia, Turkey, using a bulk stable isotope approach (δ13C, δ15N). Seven sampling sites were able to be grouped as chub in pumpkinseed presence (n = 2) and absence (n = 3), and pumpkinseed in chub absence (n = 2). Across these groups, stable isotope metrics revealed that chub trophic (isotopic) niche size was similar in pumpkinseed presence/absence, but pumpkinseed had a larger niche in chub presence. In sites where they are co-habited, their niches showed some convergence, but with no apparent consequences for their growth or body condition, suggesting there were minimal ecological consequences of this sharing of food resources. These results suggest that the trophic consequences of this riverine invasion of pumpkinseed on this endemic chub was minimal.https://www.kmae-journal.org/articles/kmae/full_html/2023/01/kmae230025/kmae230025.htmlstable isotope analysisfreshwater fishgrowth indexdiet overlap |
| spellingShingle | Karakuş Uğur Tarkan Ali Serhan Yalçın-Özdilek Şükran Top-Karakuş Nildeniz Partal Nurbanu Britton John Robert Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition Knowledge and Management of Aquatic Ecosystems stable isotope analysis freshwater fish growth index diet overlap |
| title | Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition |
| title_full | Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition |
| title_fullStr | Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition |
| title_full_unstemmed | Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition |
| title_short | Interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition |
| title_sort | interactions of invasive pumpkinseed with a riverine endemic fish indicate trophic overlap but minimal consequences for somatic growth and condition |
| topic | stable isotope analysis freshwater fish growth index diet overlap |
| url | https://www.kmae-journal.org/articles/kmae/full_html/2023/01/kmae230025/kmae230025.html |
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