Volume 6, Issue 2 (8-2014)
3 2014, 6(2): 25-34 |
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Nasrollah Pourmoghadam M, Poorbagher H, Eagderi S. Detection of salinity and temperatureeffects on body shape of Sophiae toothed carp (Aphanis sophiae) using geometric morphometrics technique. 3 2014; 6 (2) :25-34
URL: http://jmb.ahvaz.iau.ir/article-1-281-en.html
URL: http://jmb.ahvaz.iau.ir/article-1-281-en.html
Abstract: (4503 Views)
The present study aimed to investigatethe effects of different levels of temperature and salinity on the body shape of Sophiae toothed carp (Aphanius sophiae) using geometric morphometrics technique. A total of 120 specimenswere reared at four combined treatments with two levels of temperatures(16 and 25°C) and two levels of salinity (0 and 14 ppt)for one month. The left side of the specimens were photographed and 17 landmark-points were defined and digitized on 2D images using the tpsDig2 softwareto extract body shape data in geometric morphometrics technique. The obtained data superimposed using Generalized Procrustes Analysis toremove effects of size, position and orientation. The obtained data were analyzed using PCA, CVA and CA. The resultsrevealed a significant difference betweenthe body shape of treatments exposed to different combination of temperature and salinity (P<0.05). The results showed that changes in the body shape of 16°C and 0 ppttreatmentincludesthe anteroventral shift of the snout, the elongation of the opercle, increasing the depth of the head and eye diameter.At 16°C and f 14ppttreatment, decreasingin the height of opercle was observed. At 25°C and 0 ppt treatment, the height of the operclewas increased, and at 25°C and 14 ppttreatment, the observed changes were relatedto the tip of snout. The results of the present study indicatedthe effect of temperature and salinity on thebody shape of the Sophiae toothed carp.
Type of Study: Research |
Subject:
Fisheries
Received: 2015/03/2 | Accepted: 2015/03/2 | Published: 2015/03/2
Received: 2015/03/2 | Accepted: 2015/03/2 | Published: 2015/03/2
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