تحلیل ریخت سنجی هندسی فلس جهت شناسایی جمعیت های مختلف گونۀ Garra rufa Heckel, 1843

نویسندگان

1 دانشگاه شهرکرد

2 دانشگاه شهیدبهشتی

3 دانشگاه شهید بهشتی

چکیده
Garra rufa یکی از 73 گونۀ جنس Garra متعلق به خانوادۀ کپورماهیان است، که عموماً با عنوان دکترماهی شناخته می­ شود. به ­دلیل شفافیت، سهولت نمونه­ برداری، و حداقل آسیب وارد به ماهی در اثر جداکردن فلس­ ها، از آنها بیشتر از دیگر ساختارها در مطالعات پویایی جمعیت استفاده می­ شود. در این مطالعه برای تفکیک نمونه­ های ماهی G. rufa (متعلق به خانوادۀ کپورماهیان) در رودخانه ­های بشار، بهبهان، گردآب، خیرآباد، کوشک بهرام، مازو، پالنگان، سندگان، شورآباد و سیروان از تحلیل شکل فلس به روش لندمارک­ گذاری استفاده شد. بر تصاویر فلس­ ها در روش مبتنی بر لندمارک تعداد هفت لندمارک با استفاده از نرم ­افزار TpsDig2 قرار داده شد. داده­ های حاصل پس ­از تحلیل پروکراست، با استفاده از تحلیل چندمتغیره تجزیه به مؤلفه­ های اصلی، تجزیۀ همبستگی کانونیک و تحلیل خوشه ­ای در نرم ­افزار pastمورد تفسیر قرار گرفتند. نتایج نشان داد که بین بعضی از رودخانه­ ها از لحاظ شکل فلس تفاوت معنی­ داری وجود دارد، اما بیشتر جمعیت ها هم­ پوشانی دارند و نمی­ توان آنها را به ­طور کامل با توجه به شکل فلس از هم جدا کرد. در بین نمونه­ های تحت بررسی، تنها نمونه­ های متعلق به رودخانۀ سندگان و گردآب با همۀ نمونه­ های دیگر دارای تفاوت معنی­ دار بودند.

کلیدواژه‌ها


عنوان مقاله English

Geometric analysis of the scale shape to discriminate different populations of Garra rufa Heckel, 1843

نویسندگان English

Aghil Mansouri Khajeh Langi 1
Iraj Hashemzadeh Segherloo 1
Seyedeh Narjes Tabatabaei 2
Asghar Abdoli 3
چکیده English

Garra rufa is one of the 73 Garra species of the family Cyprinidae. Scales are used more commonly than any other structure in population dynamic studies, because of their transparency, ease of sampling, and the minimal in-juries caused to the fish during their removal. To discriminate fish from different rivers including Bashar, Behbahan, Gerdab, Kheirabad, Kooshk-e-Bahram, Mazoo, Palangan, Sendegan, Shoor-Abad, and Sirvan Rivers using geometric morphometric analyses of the scale shape, landmark based geometric morphometrics method was used. Seven landmark points were depicted on each scale using the software TpsDig2. After procrustes analyses, landmark data were exposed to principle component analysis (PCA), CVA, and cluster analyses using the past software. The results showed that th-ere were significant scale shape differences among some populations, but most of the samples showed overlapping sh-ape distribution and could not be separated robustly. Among the samples which were analyzed, only the Sendegan and Gerdab river samples did not show significant difference in scale shape compared to all other samples.

کلیدواژه‌ها English

TpsDig2
procruses analysis
principle components
landmark
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  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405