نشریه محیط زیست طبیعی

بررسی تنوع ریختی پنج گونه از گاوماهیان (Gobiiformes: Gobiidae) جنس Ponticola در رودخانه‌های حوضة جنوبی دریای خزر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه شیلات، دانشکدة منابع طبیعی، دانشگاه تهران، دانشکدگان کشاورزی و منابع طبیعی، کرج، ایران.

2 گروه شیلات، دانشکدة منابع طبیعی، دانشگاه لرستان، خرم آباد، ایران.

10.22059/jne.2024.376255.2666

چکیده

این پژوهش با هدف بررسی تنوع ریختی پنچ گونه گاوماهی Ponticola  syrman، P. gorlap، P. iranicus، P. patimari و P. hircaniaensis از خانوادة Gobiidae به‌اجرا در آمد. بدین‌منظور، گونه‌های این جنس از ایستگاه‌های مختلف در رودخانه‌های حوضة جنوبی دریای خزر در سه استان گیلان، گلستان و مازندران نمونه‌برداری و تعداد 20 صفت اندازشی مورد بررسی قرار گرفت. سپس ویژگی‌های ریخت­سنجی پس از استاندارد‌سازی، با استفاده از آنالیزهای چند متغییره از جمله PCA، Kruskal-Wallis و CVA مورد مقایسه قرار گرفتند. براساس نتایج، تمامی صفات مورد بررسی تفاوت معنی‌داری را نشان دادند. گونه‌های مورد مطالعه به‌جز دو گونة P. iranicus و P. hircaniaensis از یکدیگر کاملاً متمایز شدند و مهمترین صفات تفکیک‌کننده شامل ارتفاع بالة پشتی دوم، فاصلة پیش‌مخرجی، طول بالة سینه‌ای، طول ساقة دمی، فاصلة پیش بالة پشتی، طول بالة شکمی و طول سر بودند. با توجه به اینکه اعضای جنس Ponticola از لحاظ ریختی بسیار به یکدیگر شبیه بوده، از این ­رو توصیه می­ شود که از مجموع صفات ریخت ­سنجی­ سنتی در آنالیز رج ­بندی تجزیه به مؤلفه ­های اصلی و صفات مولکولی برای تفکیک گونه­ های این جنس جهت تأیید نتایج فوق استفاده گردد.

کلیدواژه‌ها

عنوان مقاله [English]

Investigating the morphological diversity of five species of gobies of the genus Ponticola (Gobiiformes: Gobiidae) in rivers of the southern Caspian Sea basin

نویسندگان [English]

  • Ehsan Shatoei Gharenjeh 1
  • Soheil Eagderi 1
  • Hadi poorbagher 1
  • Manoochehr Nasri 2

1 Department of Fisheries, Faculty of Natural Resources, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.

2 Department of Fisheries, Faculty of Natural Resources, Lorestan University, Khorramabad, Iran.

چکیده [English]

This work aimed to investigate the morphological diversity of five species of the genus  Ponticola viz. P. syrian, P. group, P. ironic, P. primary, and P. hircaniaensis (Gobiidae). For this purpose, the specimens of the studied species were sampled from different stations in the rivers of the southern basin of the Caspian Sea in the provinces of Guilan, Golestan, and Mazandaran, and a total of 20 morphometric characteristics were measured. Then, the morphological characteristics after standardization were compared using PCA, Kruskal-Wallis, and CVA analyses. Based on the results, all characteristics showed significant differences. The studied species, except P. iranicus and P. hircaniaensis, were discriminated from each other, and the most important discriminative characters were the height of the second dorsal fin, preanal length, the length of the pectoral fin, the length of the caudal peduncle, the pre dorsal length, ventral fin length, and head length. The members of the genus Ponticola are similar in terms of morphological traits; hence, it is suggested that the whole traditional morphometric characters in a PCA analysis and molecular data be used to discriminate the species in this genus.

کلیدواژه‌ها [English]

  • Caspian Sea
  • Gobiidae
  • Morphometrics
  • Morphological diversity
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نشریه محیط زیست طبیعی
دوره 77، ویژه نامه بوم شناسی و مدیریت تنوع زیستی
مرداد 1403
صفحه 189-197