Published January 1, 2014
| Version v1
Journal article
Open
Development of empirical standard weight equation for Pursak chub Squalius pursakensis, an endemic cyprinid species of Northwest Anatolia
Creators
- 1. Eskisehir Osmangazi Univ, Fac Sci, Dept Biol, Eskisehir, Turkey
- 2. Mugla Sitki Kocman Univ, Fac Fisheries, Kotekli, Mugla, Turkey
- 3. Istanbul Univ, Fac Fisheries, Istanbul, Turkey
- 4. Kocaeli Univ, Gazanfer Bilge Vocat High Sch, Karamursel, Kocaeli, Turkey
- 5. Anadolu Univ, Environm Problems Res & Applicat Ctr, Eskisehir, Turkey
Description
Indices of condition enable the evaluation of the well-being of fish, with the assumption that heavier fish of a given length are in a better condition. Relative weight (W-r) is one of these indices; it is calculated by comparing the actual weight of a specimen with the ideal weight of a specimen in good physiological condition of the same length from the same species, i.e. standard weight (W-s). In this research, length and weight data over the distribution range for Pursak chub Squalius pursakensis, an endemic species distributed in the Sakarya and Porsuk drainages in Northwest Anatolia (Turkey), were used to compute a W-s equation by means of the empirical percentile (EmP) method. The W-s equation obtained was log(10) W-s = -4.657 + 2.614 log(10) TL + 0.127 (log(10) TL)(2), and the total length range of application was 80-340 mm. Since the EmP W-s equation was not influenced by length variation, the use of this equation to compute the relative weight (W-r) for S. pursakensis throughout its area of distribution is suggested.
Files
bib-fb391eb5-1932-47cf-b6a0-4410fc436f38.txt
Files
(315 Bytes)
| Name | Size | Download all |
|---|---|---|
|
md5:571bf8a6d8c8ba3952dedc7ca747e1c9
|
315 Bytes | Preview Download |