@article{article_376446, title={Estimating gillnet selectivity of Bluefish (Pomatomus saltatrix) by morphology}, journal={Ege Journal of Fisheries and Aquatic Sciences}, volume={35}, pages={89–94}, year={2018}, DOI={10.12714/egejfas.2018.35.1.14}, url={https://izlik.org/JA37BZ99EM}, author={İlkyaz, Akın Türker}, keywords={Direkt tahmin,Sechin metodu,boy-çevre ilişkisi,boy-boy ilişkisi,boy-ağırlık ilişkisi}, abstract={<div style="border-top:solid 1pt;border-left:none;border-bottom:solid 1pt;border-right:none;padding:1pt 0cm 1pt 0cm;"> <p class="MsoNormal" style="text-align:justify;border:none;padding:0cm;"> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">The dataset of the
study consists of total length, fork length, head girth, maximum girth and
weight measurements of 136 bluefish. The relationship between the total length
and fork length of the product was TL=1.1348×FL </span> <span lang="en-gb" style="font-size:8pt;font-family:Symbol;" xml:lang="en-gb">- </span> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">0.8184; the relationship between the
total length and weight was <i>W </i>=0.0103× <i>L </i> <sup>2.97 </sup>. The relationships
between the total length and head girth and between the total length and
maximum girth of the sample were linear: the relationship of the total length
and head girth was <i>G </i> <sub>gill </sub>=0.5092×TL </span> <span lang="en-gb" style="font-size:8pt;font-family:Symbol;" xml:lang="en-gb">- </span> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">0.0874;
the relationship of the total length and maximum girth was <i>G </i> <sub>max </sub>=0.5989×TL </span> <span lang="en-gb" style="font-size:8pt;font-family:Symbol;" xml:lang="en-gb">- </span> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">0.8540. The statistical relationship between length
and girth was used to obtain a theoretical gillnet selectivity equation for the
species. In conclusion, a relationship of <i>S </i>( <i>l </i>)=Φ[( <i>C </i> </span> <span lang="en-gb" style="font-size:8pt;font-family:Symbol;" xml:lang="en-gb">- </span> <i> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">G </span> </i> <sub> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">gill </span> </sub> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">)/0.4952]×[1 </span> <span lang="en-gb" style="font-size:8pt;font-family:Symbol;" xml:lang="en-gb">- </span> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">Φ(( <i>C </i> </span> <span lang="en-gb" style="font-size:8pt;font-family:Symbol;" xml:lang="en-gb">- </span> <i> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">G </span> </i> <sub> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">max </span> </sub> <span lang="en-gb" style="font-size:8pt;font-family:’Arial Narrow’, sans-serif;" xml:lang="en-gb">)/0.4255)] was
determined between the stretched size of the mesh used in bluefish fishing and
the catch rate. Using this equation, and considering the legal length and
length at first maturity, the minimum mesh size of the gillnet for sustainable
fishery was determined. </span> </p> <p> </p> </div>}, number={1}