DOI: 10.26650/ASE201812
The objective of this study was to
determine the regressions between otolith size (length and height), otolith
weight vs. fish length, and weight of European anchovy Engraulis encrasicolus
(Linnaeus, 1758) (n=360) and European pilchard Sardina pilchardus (Walbaum,
1792) (n=360), living off Güllük Bay, Turkey. Fish were caught using a purse
seine between January and March 2014 in the southern Aegean Sea. No differences
were found between the size and weight of the left and right otoliths. Equations
were used to reconstruct the original dimensions of prey from the size of hard
structures found in food samples of piscivorous predators living in or in the
vicinity of the aquatic habitat. A linear regression model was used to
determine the relationship between fish length and otolith size, whereas an
exponential regression model was used to describe the relationships between
lengths and weights of otoliths and fish for both species. All regressions
yielded high coefficients of determination (r2) of 0.78–0.93 for E.
encrasicolus and 0.80–0.95 for S. pilchardus. We conclude that otolith length
and otolith weight are good indicators of the length and weight of the two
species.
European anchovy European pilchard Güllük Bay otolith morphometry
DOI: 10.26650/ASE201812
The objective of this study was to
determine the regressions between otolith size (length and height), otolith
weight vs. fish length, and weight of European anchovy Engraulis encrasicolus
(Linnaeus, 1758) (n=360) and European pilchard Sardina pilchardus (Walbaum,
1792) (n=360), living off Güllük Bay, Turkey. Fish were caught using a purse
seine between January and March 2014 in the southern Aegean Sea. No differences
were found between the size and weight of the left and right otoliths. Equations
were used to reconstruct the original dimensions of prey from the size of hard
structures found in food samples of piscivorous predators living in or in the
vicinity of the aquatic habitat. A linear regression model was used to
determine the relationship between fish length and otolith size, whereas an
exponential regression model was used to describe the relationships between
lengths and weights of otoliths and fish for both species. All regressions
yielded high coefficients of determination (r2) of 0.78–0.93 for E.
encrasicolus and 0.80–0.95 for S. pilchardus. We conclude that otolith length
and otolith weight are good indicators of the length and weight of the two
species.
European anchovy European pilchard Güllük Bay otolith morphometry
Birincil Dil | İngilizce |
---|---|
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 28 Haziran 2018 |
Gönderilme Tarihi | 25 Ekim 2017 |
Yayımlandığı Sayı | Yıl 2018 Cilt: 33 Sayı: 3 |
Open Access Statement:
This is an open access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access.