The Variation of Several Biological Characteristics of the Chub, Squalius cephalus (L., 1758), in the Orenler Dam Lake, Northwest Anatolia, Turkey
<span style="font-family: Times New Roman; font-size: small;"> </span><p style="margin: 0in 0in 0pt; text-align: justify;" class="MsoNormal"><span style="font-family: Times New Roman;"><span lang="EN-US" style="color:...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Society of Land Measurements and Cadastre from Transylvania (SMTCT)
2012-08-01
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| Series: | Notulae Scientia Biologicae |
| Online Access: | http://notulaebiologicae.ro/index.php/nsb/article/view/7674 |
| Summary: | <span style="font-family: Times New Roman; font-size: small;"> </span><p style="margin: 0in 0in 0pt; text-align: justify;" class="MsoNormal"><span style="font-family: Times New Roman;"><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">In the present study, several growth parameters of 338 <span style="mso-bidi-font-style: italic;">Squalius cephalus </span>(L., 1758) specimens collected from the Orenler dam lake (Turkey) between July 2005 and June 2006 were studied. The population comprised 50.74% males, 46.29% females, and 2.97% males+females. In the examined samples, the age of females and males ranged from I to VII and I to VI, respectively. The fork length and weight of females were 14.7-38.0 cm and 40.68-27.0 g, respectively; these values were 16.3-33.7 cm and 57.7-560.0 g, respectively, for males. The age-length and age-weight relationships at time <span style="mso-bidi-font-style: italic;">t </span>were calculated by the von Bertalanffy equation for females, and the following results were obtained: <span style="mso-bidi-font-style: italic;">L</span></span><span style="color: #221e1f;"><span class="A21"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";"><em>t </em></span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">= 37.12[1–e</span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">–0.36(<span style="mso-bidi-font-style: italic;">t</span>–(–0.96))</span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">], <span style="mso-bidi-font-style: italic;">W</span></span><span class="A21"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";"><em>t </em></span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">= 775.6[1–e</span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">–0.36(<span style="mso-bidi-font-style: italic;">t</span>–(–0.96))</span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">]</span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">3.27</span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">, <span style="mso-bidi-font-style: italic;">L</span></span><span class="A21"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";"><em>t </em></span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">= 43.59[1–e</span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">–0.3356(<span style="mso-bidi-font-style: italic;">t</span>–(–0.719))</span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">], and <span style="mso-bidi-font-style: italic;">W</span></span><span class="A21"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";"><em>t </em></span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">= 1123.2[1–e</span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">–0.3356(<span style="mso-bidi-font-style: italic;">t</span>–(–0.719))</span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">]</span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">3.08</span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">. The calculated length-weight relationship was <span style="mso-bidi-font-style: italic;">W </span>= 0.36<span style="mso-bidi-font-style: italic;">L</span></span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">3.27 </span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">for females and <span style="mso-bidi-font-style: italic;">W </span>= 0.03356<span style="mso-bidi-font-style: italic;">L</span></span><span class="A9"><span lang="EN-US" style="font-family: "Times New Roman","serif"; font-size: 5.5pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">3.08 </span></span></span><span lang="EN-US" style="color: #221e1f; font-size: 10pt; mso-bidi-font-family: "Garamond Premr Pro Subh";">for males. The average condition factor was 1.412 for females and 1.284 for males. Consequently, in the Orenler dam lake, <span style="mso-bidi-font-style: italic;">S. cephalus </span>grows very well according to the study’s results.</span><span lang="EN-US"></span></span></p><span style="font-family: Times New Roman; font-size: small;"> </span> |
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| ISSN: | 2067-3205 2067-3264 |