Length–weight and length–length relationships for three endemic cyprinidspecies of the Aegean region (Turkey) with proposed standard weight equations

Abstract

Empirical standard weight equations and length-weight and length-length relationships were estimated for Barbus pergamonensis, Capoeta bergamae, and Ladigesocypris irideus, three endemic cyprinid species of Turkey that are still not widely studied. To the best knowledge of the authors, empirical standard weight equations for the three species and L-W parameters for L. irideus are given here for the first time. In this study, length and weight data for B. pergamonensis, C. bergamae, and L. irideus were collected throughout the watercourses of Muğla Province and were used to develop species-specific W s equations. The results were for B. pergamonensis (total length [TL] range: 6-22 cm) log 10 W s = -5.713 + 3.718 log 10 TL -0.166 (log 10 TL) 2 , for C. bergamae (TL range: 8-29 cm) log 10 W s = -5.224 + 3.311 log 10 TL -0.083 (log 10 TL) 2 , and for L. irideus (TL range: 6-10 cm) log 10 W s = -13.298 + 12.116 log 10 TL -2.471 (log 10 TL) 2 . This study also reported new maximum TLs for the three species, together with species-specific length-weight and length-length equations.

Occurrence of Ligula sp. plerocercoids in Ladigesocypris irideus (Ladiges, 1960) from SouthWestern Turkey: new host and new locality records

“…No previous reports on the occurrence of Ligula from Ladigesocypris irideus are available in the literature. The only similar study is the occurrence of rhabdochonid nematode Rhabdochona leucaspii in Ladigesocypris ghigii (Moravea, 2006), which is another cyprinid endemic to Greece with restricted distribution to mainland Greece and Rhodes Island (Stoumboudi et al, 2002;Fricke et al, 2007;Giannetto et al, 2015).…”

“…It has been reported from the main watercourses of southwestern Anatolia, i.e. Akçapınar, Balıklı, Gediz, Küçük Menderes, Tersakan, Yuvarlakçay rivers and streams, Köyceğiz Lake and Ula pond (Bogutskaya, 1997;Yilmaz et al, 2006;Fricke et al, 2007;Giannetto et al, 2015;Top and Tarkan, 2015). L. irideus inhabits slow running freshwaters especially in areas with tree roots, small caverns and plenty of vegetation.…”

New Localities and Length-Weight Relationship for Alburnus caeruleus in the Euphrates and Tigris River Basins (Turkey)

“…Studies for the conservation of fish cannot be separated from a detailed examination of their bio-ecological characteristics and an estimation of the length-weight relationship of fish is one such useful biological parameter (Hossain, Rahman, Ahamed, Ahmed, & Ohtomi, 2013;Giannetto et al, 2015). The length-weight relationship data is needed by fishery biologists, managers, or conservationists to compare the life histories of fishes among different geographic locations (Hossein et al, 2011;Akhtar & Khan, 2018).…”

Standard weight equations of two sub-/tropic nonnative freshwater fish, Clarias gariepinus and Oreochromis niloticus , in the Sakarya River Basin (NW Turkey)

“…While the methodology is currently commonly used in the United States (Blackwell et al, 2000), its use in other countries is still limited, probably because of the lack of specific W s equations (Giannetto et al, 2015a). With regard to Turkey, specific W s equations are currently available only for some endemic freshwater species (Giannetto et al, 2012c;Sülün et al, 2014;Giannetto et al, 2015b;2019).…”