Body shape comparison of Big-head carp with two variants of silver carp using geometric morphometric techniques

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Ghojoghi Fariborz; NASRI MANOOCHEHR

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Journal: NOVA BIOLOGICA REPERTA Year:2020 | Volume:6 | Issue:4 Page(s): 382-390

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Title

Body shape comparison of Big-head carp with two variants of silver carp using geometric morphometric techniques

Author(s)

Ghojoghi Fariborz | NASRI MANOOCHEHR | Issue Writer Certificate

Keywords

artificial fish reproductionQ1

Chinese carpsQ1

fish hybridizationQ2

morphologyQ1

warm water fishesQ1

Abstract

In order to investigate the differences in the shape of the big-head and two morphotypes of Phytophagous fish by geometric morphometric technique, 30 samples of each group, with a mean standard length of 25 ± 3 cm, were prepared. After fish were anesthetized by 1% Clove powder extract and stabilized in formalin buffer 4%, 6-megapixel digital images of the left profile of the specimens were prepared. A total of 17 morphological landmarks were digitized by tpsDig2 software and the tps files were prepared. All non-shaped data were removed from landmark coordinates by generalized procrustes analysis. After the approval of regression between shape space and tangent space, data were analyzed using Principal Component (PCA), Canonical Variation (CVA) and Cluster Analyzes (CA) methods in PAST and TPS series. According to the results, the head length and height, the size of dorsal fin, the length of pre ventral distance, the height of caudal peduncle and the degree of posterior position of the pectoral fin in bighead carp, are some of the distinctive morphological features among species, mainly related to their ecological niche (specially feeding strategies). In the case of silver carp variants, the posterior position of pectoral fin base in silver carp-R that is close to bighead carp, may be due to hybridization between bighead carp and silver carps.

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APA: Copy

Ghojoghi, Fariborz, & NASRI, MANOOCHEHR. (2020). Body shape comparison of Big-head carp with two variants of silver carp using geometric morphometric techniques. NOVA BIOLOGICA REPERTA, 6(4 ), 382-390. SID. https://sid.ir/paper/250585/en

Vancouver: Copy

Ghojoghi Fariborz, NASRI MANOOCHEHR. Body shape comparison of Big-head carp with two variants of silver carp using geometric morphometric techniques. NOVA BIOLOGICA REPERTA[Internet]. 2020;6(4 ):382-390. Available from: https://sid.ir/paper/250585/en

IEEE: Copy

Fariborz Ghojoghi, and MANOOCHEHR NASRI, “Body shape comparison of Big-head carp with two variants of silver carp using geometric morphometric techniques,” NOVA BIOLOGICA REPERTA, vol. 6, no. 4 , pp. 382–390, 2020, [Online]. Available: https://sid.ir/paper/250585/en

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