animal
zaniar ghafouri; Soheil Eagderi; Hadi Poorbagher
Abstract
This study aimed to investigate the morphological changes of Cyprinion macrostomum in the spring, summer, and autumn and their relationship with the environmental factors in the Little Zab River. For this purpose, sampling was done seasonally in 6 stations with 3 repetitions. Then, to extract morphological ...
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This study aimed to investigate the morphological changes of Cyprinion macrostomum in the spring, summer, and autumn and their relationship with the environmental factors in the Little Zab River. For this purpose, sampling was done seasonally in 6 stations with 3 repetitions. Then, to extract morphological data in the geometric morphometric method, photographs were taken of the samples and 16 landmark points were defined and digitized. Procrust analysis was used to remove non-morphic data from the landmark data. To find the pattern of shape changes and main effective factors, principal component analysis (PCA) was used. Canonical Variates Analysis and 2B-PLS analysis were used to determine the morphological distinction between the populations of sampling stations and to analyze the relationship and correlation between body shape changes and environmental variables, respectively. Based on the results, the morphological characteristics of C. macrostomum of the studied populations in different stations were different in each season. The results of PCA showed changes in the position of the mouth, dorsal fin and caudal peduncle occur in most seasons due to morphological adaptation to the environmental factors of their habitat. 2B-PLS analysis also showed a high correlation and significant difference between body shape and environmental factors in all three seasons (P=0.001, r=0.98). The results also showed a high and significant correlation between the morphological changes of C. macrostomum and the habitat factors of Little Zab River.
animal
Zahra Mehrabani; Soheil Eagderi; Hadi Poorbagher
Abstract
Intrudaction: This work was conducted to study the morphological variation of longspine scraper (Capoeta trutta) in seven populations in the Iranina sub-basins of the Persian Gulf basin, including Sirvan, Little Zab, Karun, Karkheh, Zemkan, Godarkhosh and Zohreh. Methods: For this purpose, 161 specimens ...
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Intrudaction: This work was conducted to study the morphological variation of longspine scraper (Capoeta trutta) in seven populations in the Iranina sub-basins of the Persian Gulf basin, including Sirvan, Little Zab, Karun, Karkheh, Zemkan, Godarkhosh and Zohreh. Methods: For this purpose, 161 specimens were sampled using cast-net and electrofishing device. To extract morphological data in the geometric morphometric method, photographs were taken from the left side of fish, and then 18 landmark-points were digitized on their 2D images. Results and Discussion: The results of Canonical Variate Analysis showed that Godarkhosh and Little Zab populations are separated from others. Based on the results of Mahalanobis distances between the studied populations, the maximum and minimum distances were between Tang-shive and Godarkhosh populations and Sirvan and Zemkan populations, respectively. Based on the Cluster analysis, the populations of Karkheh, Karun, Sirvan, Zemkan and Tang-shive were clustered together and Godarkhosh and Little Zab in another one. The results also showed the phenotypic plasticity of this species in adapting to different habitats in traits including depth of head, trunk and tail as well as head length, based on habitat conditions.
Soheil Eagderi; Atta Mouludi-Saleh
Abstract
This study aimed to find morphological traits to discriminate four species of the genus Cobitis in Iran using geometric morphometric method. For this purpose, a total of 65 specimens were captured from Sefid (C. saniae), Siah (C. faridpaki), Maloosjan (C. linea) and Gamasiab (C. avicennae) rivers ...
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This study aimed to find morphological traits to discriminate four species of the genus Cobitis in Iran using geometric morphometric method. For this purpose, a total of 65 specimens were captured from Sefid (C. saniae), Siah (C. faridpaki), Maloosjan (C. linea) and Gamasiab (C. avicennae) rivers using electrofishing device. To extract the body shape data of the studied taxa, 14 Landmarks-point were defined and digitized using tpsDig2 software. Data after generalized procrust analysis were analyzed using principal component analysis, multivariate analysis of variance /canonical variate analysis and cluster analysis. The results showed a significant difference in the body shape between the studied species (p < 0.001). Cluster analysis positioned C. avicennae in one clade, distinguish from others. The results also revealed that the members of this genus can adapt themselves to the environmental parameters of their habitats by alternations in the body depth, head size and snout position, length of the caudal peduncle and positions of the dorsal, anal and pectoral fins.
Paria Jalili; Soheil Eagderi; Shima Latifnezhad; Mahvash Seifali
Abstract
Schizoyhorax pelzami is a member of Cyprinid family in the Dahst-e-kavir and Hari River basins of Iran. According to importance of osteological characters for taxonomy of fish species and lacking any information regarding osteological features of S. pelzami, this study was conducted to provide the detailed ...
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Schizoyhorax pelzami is a member of Cyprinid family in the Dahst-e-kavir and Hari River basins of Iran. According to importance of osteological characters for taxonomy of fish species and lacking any information regarding osteological features of S. pelzami, this study was conducted to provide the detailed osteological characters. For this purpose, specimens were cleared and stained by alcian blue and alizarin red. Their skeletal structures were photographed using a scanner equipped with a glycerol bath. Drawing and nomenclature of the skeletal elements were done using Corel Draw X6 software and studied under a stereomicroscope. Base on the results, S. pelzami species is distinguished from other species of this genus by having (1) 44 vertebrae, (2) a long nasal bone, (3) an anal fin with anterior position (close to 27th centrum), (4) a broader posterior part of basibranchial, (5) a flat posterior margin of urohyal and (6) lack a pre-palatine.
Shghaiegh Hasanpour; Soheil Eagderi; Manouchehr Nasri
Abstract
The morphological comparison of five populations of Mosul bleak (Alburnus mossulensis Heckel, 1843) was done using Elliptic Fourier analysis. For this porpose a total of 219specimens were caught from Tigris basin (Gamasiab, Karoon, Kashkan, Khersan and Sepidbarg Rivers) using electrofishing. The fish ...
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The morphological comparison of five populations of Mosul bleak (Alburnus mossulensis Heckel, 1843) was done using Elliptic Fourier analysis. For this porpose a total of 219specimens were caught from Tigris basin (Gamasiab, Karoon, Kashkan, Khersan and Sepidbarg Rivers) using electrofishing. The fish were photographed from left sides using a digitalcamera and the outline curve was digitized using TpsDig2 software and resampled to 150equal distanced landmarks. The outline curveswere converted to a readable file format forEPA analysis using EFAWIN software and EFA analysis was done opting 17 shape harmonicswith 2 constants and four coefficients per harmonic and non-shapeddata were removedusin general Procrustes analysis. The principal component analysis (PCA) and Manova/CVAwere used for morphological comparison in PAST software. The results showed significantshape differences between populations but Sepidbarg population (pand Sepidbarg populations were distinguishable having a fusiform shapedbody and theother three other populationswere distinguishable based on a shorter caudal peduncles.The present study proved the potential of the geometric morphometrics (outline curves)for recognizing various populations of the Mosul bleak.
