Abstract
This study provides the length-weight relationships of 12 fish species that belong to ten families from the Köyceğiz Lagoon, Turkey; Dicentrarchus labrax (Linnaeus, 1758); Diplodus annularis (Linnaeus, 1758); Diplodus sargus (Linnaeus, 1758); Dussumieria elopsoides Bleeker, 1849; Engraulis encrasicolus (Linnaeus, 1758); Oreochromis niloticus (Linnaeus, 1758); Gobius niger Linnaeus, 1758; Mullus barbatus barbatus Linnaeus, 1758; Sparus aurata Linnaeus, 1758; Siganus rivulatus Forsskål & Niebuhr, 1775; Solea solea (Linnaeus, 1758); Trachinotus ovatus (Linnaeus, 1758). A total of 720 fish samples were collected with fish barrier, trammel net, beach seine and cast-net. The growth type of D. annularis (b=3.148), D. elopsoides (b=3.089), G. niger (b=3.154), S. solea (b=3.124) was determined as positive allometry and E. encrasicolus (b=2.814), D. labrax (b=2.764), T. ovatus (b=2.901) was determined as negative allometry whereas D. sargus (b=2.995), M. barbatus barbatus (b=3.003), O. niloticus (b=3.088), S. aurata (b=3.009) and S. rivulatus (b=3.079) showed isometry. The results of this investigation will contribute to further fishery studies in the Köyceğiz Lagoon.
Highlights
Lagoons and wetlands, which are of great ecological importance, are special ecosystems and undertake many functional tasks
This study provides the length-weight relationships of 12 fish species that belong to ten families from the Köyceğiz Lagoon, Turkey; Dicentrarchus labrax (Linnaeus, 1758); Diplodus annularis (Linnaeus, 1758); Diplodus sargus (Linnaeus, 1758); Dussumieria elopsoides Bleeker, 1849; Engraulis encrasicolus (Linnaeus, 1758); Oreochromis niloticus (Linnaeus, 1758); Gobius niger Linnaeus, 1758; Mullus barbatus barbatus Linnaeus, 1758; Sparus aurata Linnaeus, 1758; Siganus rivulatus Forsskål & Niebuhr, 1775; Solea solea (Linnaeus, 1758); Trachinotus ovatus (Linnaeus, 1758)
Labrax, T. ovatus was determined as negative allometry (b
Summary
Lagoons and wetlands, which are of great ecological importance, are special ecosystems and undertake many functional tasks. Lagoons are important for the economy due to providing a wide array of ecosystem services in addition to being the home of so many different species. Some of these services include fisheries, nutrient cycling and flood protection (Miththapala, 2013). Length-weight relationships (LWRs) have an important role in fish stock management (Froese, 2006) and are useful for comparing life history and morphological aspects of different populations from other regions (Goncalves et al, 1997). The LWRs provide predicting the weight corresponding to a given length and to allow for the comparison of fish growth in different habitats (Bagenal and Tesch, 1978; Morato et al, 2001; Tsoumani et al, 2006). Though there are some studies on length weight relationships in the Black Sea (Samsun et al, 2006; Kasapoğlu and Düzgüneş, 2013), the Sea of Marmara (Keskin and Gaygusuz, 2010; Bok et al, 2011) the Aegean Sea (İlkyaz et al, 2008; Bilge et al, 2014; Ates et al, 2017), the eastern Mediterranean Sea (Cicek et al, 2006; Sangun et al, 2007; Gökçe et al, 2010) and in the Turkish Lagoons few studies on LWRs of fish species in the Homa Lagoon (Acarli et al, 2014); in the Beymelek Lagoon (Sümer, 2012) have been conducted
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