What does external morphometry tell us about stock discrimination of Sardina pilchardus stocks from Türkiye?

Ozpicak, Melek; Saygin, Semra

doi:10.26881/oahs-2024.3.08

Artykuł - szczegóły

Tytuł artykułu

What does external morphometry tell us about stock discrimination of Sardina pilchardus stocks from Türkiye?

Autorzy

Ozpicak Melek , Saygin Semra

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.26881/oahs-2024.3.08

Warianty tytułu

Języki publikacji

Abstrakty

The analysis of shape is a fundamental part of much biological research. Morphometrics, which incorporates concepts from biology, geometry, and statistics, is the study of the geometrical form of organisms. In addition, morphometric characteristics can be used to differentiate ‘phenotypic stocks’ as groups with similar growth, mortality, and reproductive rates. In this study, 25 morphometric characters were used to discriminate European pilchard (Sardina pilchardus) stocks from Türkiye. Intraspecific variation of the European pilchard was investigated based on morphometric characters. Samples were collected from the Aegean Sea (AS; N = 54), the Sea of Marmara (MS; N = 50) and the Mediterranean Sea (MEDS; N = 50) during the 2019 fishing season. Principal Component Analysis (PCA) and Canonical Discriminant Analysis (CDA) were used for stock discrimination of the European pilchard. Univariate statistics (ANOVA) showed that 24 of the 25 measurements differed significantly between samples to a varying degree ( p < 0.001). According to CDA, an overall classification success rate of 87.7% was achieved using 12 morphometric parameters. All samples were clearly separated from each other in the discriminant space, suggesting that there was no strong intermingling between populations. In addition, we would like to conclude that the morphological difference is not at the genetic level, and would like to emphasize the need for additional stock discrimination methods.

Słowa kluczowe

stock discrimination morphometrics multivariate analysis Türkiye

Wydawca

Institute of Oceanography University of Gdańsk

Czasopismo

Oceanological and Hydrobiological Studies

Rocznik

2024

Tom

Vol. 53, No. 3

Strony

299--309

Opis fizyczny

Bibliogr. 77 poz., fot., map., tab., wykr.

Twórcy

autor

Ozpicak Melek

melek.zengin@omu.edu.tr

Ondokuz Mayis University, Faculty of Science, Department of Biology Samsun, Türkiye

autor

Saygin Semra

Ondokuz Mayis University, Faculty of Science, Department of Biology Samsun, Türkiye

Bibliografia

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