Trophic Interactions of Two Ponto-Caspian Gobies in the Turkish Part of Their Native Range
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Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Central Fisheries Research Inst
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Several Ponto-Caspian gobiids have expanded from their native distribution ranges to Europe and North America. As knowledge on their bio-ecological features in their native range is still limited, the trophic ecology of monkey goby Neogobius fluviatilis and Western tubenose goby Proterorhinus semilunaris was studied in three natural lakes in the Marmara Region of NW Turkey using the stable isotopes of delta C-13 and delta N-15. In two of the lakes, the trophic niches ( as the isotopic niche) of the gobies were highly divergent with co-existing native fishes, with no overlap. Moreover, mixing models suggests considerable inter-specific dietary differences. In all lakes, the trophic niches of gobies were never significantly larger than those of coexisting fishes. These results suggest that when introduced outside of their natural range, the gobies might integrate into new fish communities via exploiting resources that are underexploited by native fishes or will initially share resources with these species before their niches diverge, perhaps through competitive displacement.
Açıklama
Anahtar Kelimeler
Monkey goby, tubenose goby, isotopic niche, niche plasticity, trophic relationships
Kaynak
Turkish Journal of Fisheries and Aquatic Sciences
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
18
Sayı
11
