Determination of Some Morphometric Characteristics ...

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Umut Uyan , Rifat Tezel* , Murat Çelik , Kenan Güllü. Muğla Sıtkı Koçman ... IN the AEGEAN SEA. Umut UYAN1, Rifat TEZEL1, Murat ÇELİK1, Kenan GÜLLÜ1.
Natural and Engineering Sciences

Volume 1, No. 3, Supplement, 49, 2016

Determination of Some Morphometric Characteristics of Serranus cabrilla (Linnaeus, 1758) Lives in the Aegean Sea Umut Uyan , Rifat Tezel* , Murat Çelik , Kenan Güllü Muğla Sıtkı Koçman University, Faculty of Fisheries, Muğla, Turkey *[email protected]

Abstract The aim of this study is to determine some morphometric characteristics of stripped grouper Serranus cabrilla (Linnaeus, 1758) which is abundant in costs of Aegean Sea. Fish samples were obtained via sport fishing activities carried out in Ildir Bay (Cesme, Izmir) that held in June-July 2016. The 34 fish samples of S. cabrilla caught during the sport fishing activities was transferred to laboratory on an ice layer. Digimizer (MedCalc Software 2014) software program was used to determine morphometric characteristics. Samples were located as their heads to left and fixed on the ground with needle. Fish samples were photographed from upper side via a Canon EOS 550D (18-55 mm lens) trademark camera. The photographs were transferred to Digimizer 4. 3. 1. software program and morphometric characteristics of stripped grouper were analyzed. From these samples twelve morphometric measurements were made and statistical relation analyses were applied to these measurements. Total length, caudal length and standard length of fish samples were measured with a 1 mm measurement precision fish length measuring scale. Fish weight was measured with 0,001 g measurement precision scale. The length and weight of samples were between 9,5-16,4 cm and 16,61-89,89 g respectively. The total length-standard length equation for S. cabrilla population was calculated as TL= 0,8341 (SB)-0,1903 (R2=0,98). Hence a very important relation between total length and standard length was determined. Moreover, significantly important relations were determined between standard length and basal measurements of predorsal length, head length, prepelvic length, preanal length, dorsal fin length. Keywords: Stripped grouper, Grouper, Sport fishing, Ildır Bay

DETERMINATION OF SOME MORPHOMETRIC CHARACTERISTICS OF Serranus cabrilla (Linnaeus, 1758) LIVES IN the AEGEAN SEA Umut UYAN1, Rifat TEZEL1, Murat ÇELİK1, Kenan GÜLLÜ1 1 Muğla

Sıtkı Koçman University, Faculty of Fisheries, 48000 Kötekli/Muğla, Turkey [email protected]

INTRODUCTION

Table 2.Metrical measurements of Serranus cabrilla

Morphometric characters and environmental factors together with the impact of genetic differences are bring about to differ wide geographical diversity for fish species (O’Reilly and Horn, 2004). Morphometric characteristics, which is one of the biological determinant, occupy an important place to determine and to identify (Mosquera et al., 2000). The purpose of this study to inform about morphometric characters of the population of S. cabrilla in Ildır Bay (Turkey) and to support studies in the future.

Characterics SL (Standard Length)

Mean 12,06

Sd. 2,204

14,55 19,37

2,601 2,73

43,0348

1,11

HL-Head Length (%SL)

17,8275 69,5688

0,47 1,02

DH- Depth of Head (%SL)

60,6136

0,7

BW-Body Width (%SL)

65,0083

0,7

ED-Eye Diameter (%SL)

8,20896

0,17

PrP-Prepelvic Length (%SL)

40,6302

1,13

PrA-Preanal Length (%SL)

70,5638

1,74

DCP-Depth of Caudal Peduncle (%SL)

11,0282

0,24

CPL-Caudal Peduncle Length (%SL)

10,7794

0,67

AyBL-Anal Fin Basal Length(%SL)

17,9104

0,36

1,5

DFBL-Dorsal Fin Basal Length(%SL)

56,8823

1,33

4,94

FL (Fork Length) TL (Total Length) Pr-Predorsal Length (%SL)

MATERIAL VE METHODS

Po-Post Dorsal Length (%SL)

The 34 fish samples were obtained via sport fishing carried out in Ildır Bay (Çeşme, İzmir) that held in June-July 2016. Digimizer (MedCalc Software 2014) software program was used to determine morphometric characteristics. Fish samples were photographed from upper side via a Canon EOS 550D (18-55 mm lens) trademark camera (Figure 1.). From these samples twelve morphometric measurements (Table 1.) were made and statistical relation analyses were applied to these measurements (Table 2.). Total length, fork length and standard length of fish samples were measured with a 1 mm measurement precision fish length measuring scale. Fish weight were measured with 0,001 g measurement precision scale.

Min. Max. % VC 9,5 16,4 18,27529 17,87628 11,1 19,1 9 11,6 20,2 14,09396 2,579306 3,7 7,6 4 2,636372 1,4 3,2 1 3,27 7,52 1,466174 1,154856 1,41 4,52 4 1,076785 2,54 5,26 7 2,070909 0,76 1,44 1 2,781183 3,34 7,84 7 2,465851 6,22 12,9 9 2,176240 0,88 1,96 6 6,215538 2,13 4,9 5 2,97

2,01 2,338163 10,5 3

Sd: Standart Sapma, Min: Minumum, Max: Maximum, %VC: Varyasyon Katsayısı

Figure 1. Used Metrical Measurements (Modified by Bauchot, 1987). RESULTS Fish weight were measured with 0,001 g measurement precision scale. The length and weight of samples were determined between 9,5-16,4 cm and 16,6189,89 g respectively. The total length-standard length equation for S. cabrilla population was calculated as TL= 0,8341 (SL)-0,1903 (R 2=0,98) (Figure 2). Hence a very important relation between total length and standard length was determined. Moreover, significantly important relations were determined between standard length and basal measurements of predorsal length, head length, prepelvic length, preanal length, dorsal fin length. Table 1. Regression equations with the standard length of morphometric characters of S. cabrilla

Morphometric Characteistics (1) Predorsal Length (2) Postdorsal Length (3) Head Length (4) Depth of Head (5) Body Width (6) Eye Diameter (7) Prepelvic Length (8) Preanal Length (9) Depth of Caudal Peduncle (10) Length of Caudal Peducle (11) Length of Base of Anal Fin (12) Dorsal Fin Basal Length

Formula 1,9326 (Pr)+2,0193 4,3567 (Po)+2,6844 2,0707 (HL)+2,2652 2,6814 (DH)+5,1957 2,941 (BW)+1,4248 11,373 (ED)+0,5918 1,8626 (PPL)+2,9369 1,2374 (PAL)+1,5346 8,4797 (DCP)+0,7211 3,0835 (LCP)+2,6923 5,5522 (LBAF)+0,0499 1,5909 (DFBL)+1,1364

R2 0,94 0,86 0,93 0,73 0,87 0,88 0,91 0,95 0,87 0,89 0,82 0,92

Standart Boy

20 y = 0,8341x - 0,1903 R² = 0,9882

15 10 5 0 0

5

10 15 Toplam Boy

20

25

Figure 2. The relation between standart length and total length of S. cabrilla

DISCUSSION Finally, having done the first time of this study in the region will be an example for future studies. More particularly, the obtained data are expected to contribute to the stock separation studies to be done in the coming years.

ACKNOWLEDGEMENT We would like to strongly thank to Fırat Tezel for helping to obtain samples.

REFERENCES • O'Reilly, K. M., Horn, M. H., “Phenotypic variation among populations of Atherinops affinis (Atherinopsidae) with insights from a geometric morphometric analysis.” Journal of Fish Biology, 64:4, 1117-1135 (2004). • Mosquera, J., G´omez-Gesteira, M., P´erez-Villar, V., “Using parasites as biological tags of fish populations: a dynamical model”. Bull. Math. Biol., 62, 87–99 (2000).