بررسی برخی خصوصیات زیستی ماهی مخرج لوله‌ای Rhodeus amarus) ) در رودخانه های سفیدرود استان گیلان و سیاهرود استان مازندران

نویسندگان

1 دانشگاه گنبد کاووس،گنبدکاووس، ایران

2 پژوهشکده آبزی پروری آب‌های داخلی ایران

چکیده

هدف از این مطالعه بررسی و مقایسه ترکیب سنی، نسبت جنسی، الگوی رشد و هماوری ماهی مخرج لوله­ای Rhodeus amarus  در رودخانه های سفیدرود  و سیاهرود بود. جمعا 423 نمونه ماهی از بهمن 1391 تا خرداد 1392 بصورت ماهانه صید شد. در رودخانه  سفیدرود نسبت نرها (2/58 درصد) بیشتر از ماده­ها (8/41 درصد) و برعکس، در رودخانه سیاهرود نسبت ماده ها (4/59 درصد) بیشتر از نرها (6/40 درصد) بود و در هر دو رودخانه با نسبت 1:1 تفاوت داشت. این ماهیان در رودخانه سیاهرود دارای گروه های سنی +1 تا +8 و در سفیدرود +1 تا 9 سال بودند. در نمونه های رودخانه سیاهرود میانگین (± انحراف معیار) طول کل و وزن بدن بترتیب 4/10±9/47 میلیمتر و 4/1±98/1 گرم و در نمونه های سفیدرود به ترتیب 3/7±3/56 میلیمتر و  0/1±88/2 گرم بود که بین این فاکتورها در دو رودخانه تفاوت آماری مشاهده شد (p<0.001). در هر دو رودخانه ،الگوی رشد این ماهی آلومتریک مثبت تعیین شد. در هر دو رودخانه فاکتور وضعیت جنس نر بیشتر از جنس ماده بدست آمد(p<0.05). در نمونه های سیاهرود متوسط هماوری مطلق 2/35± 9/67 عدد و در نمونه های سفیدرود متوسط هماوری مطلق  1/33 ± 8/78 عدد بود که تفاوت  داشتند (p<0.05). هماوری مطلق با طول و وزن بدن ماهی همبستگی معنی­دار داشت.

کلیدواژه‌ها


عنوان مقاله [English]

Study on some biological parameters of the Bitterling (Rhodeus amarus) in Sefidrood River (Guilan Province) and Siyahrood River (Mazandaran Province)

نویسندگان [English]

  • M Norouzi 1
  • R Ptimar 1
  • K Golzariyanpour 1
  • K Abbasi 2
چکیده [English]

This study aimed to determine and comparison of age composition, sex ratio, growth model, and fecundity of the populations of Rhodeus amarus in Sefidrood River and Siyahrood River. In total 423 fish were caught monthly from February to June 2013. In Sefidrood River, were abundant males (58.2%) than females (41.8%) and in Siyahrood River, females (59.4%) than males (40.6%) and it was different from standard ratio (1male:1female). The fishes in Siyahrood River have had 1+ till 8+ years old and in Sefidrood River 1+ till 9. The average of total length and body weight was 47.9±10.4 mm and 1.98±1.4g in Siyahrood River and 56.3±7.3 mm and 2.88±1.0 g in Sefidrood River, respectively and there were significant statistical differences between these parameters in both rivers(p<0.001). Growth model in two rivers was positive allometric.  The condition coefficient of males was higher than of females in both rivers(p<0.05). The absolute fecundity was evaluated 67.9±35.2 in Siyahrood River females and 78.8±33.1 in Sefidrood River females and significant statistical difference was observed in studied rivers. Absolute fecundity had significant correlation with fish total length and body weight. The results of this study will help to increase the information available about this species.

کلیدواژه‌ها [English]

  • Bitterling
  • Rhodeus amarus
  • Age
  • Growth
  • fecundity
  • Sefidrood
  • Siyahrood
Bagenal, T., 1978a. Methods for assessment of fish production in freshwater. Third edition. Blackwell Scientific Publication Oxford. London Edinburgh Melbourne. 365p. Bagenal, T.B., 1978b. Aspects of Fish Fecundity. In "Ecology of Fresh Water Fish Production " (Shebly D.Gerkinged).Blackwell Scientific Publication Oxford. pp:75-101. Bagenal, T.B. and Tesch, F.W., 1978. Age and growth. In : Bagnal, T. B. Methods for assessment of fish production in freshwater , Third edition. Blackwell Scientific Publication, London. pp:165-201. Fernandes-Delgado, C. and Rossomanno, S., 1997. Reproductive biology of the mosquitofish in a permanent natural Lagoon in South-west Spain: two tactics for one species. Journal of Fish Biology. 51(1): 80-92 Froese, R. and Binohlan.C., 2000. Empirical relationships to estimate asymptotic length, length at first and length at maximum yield per recruit in fishes, with a simple method evaluate length frequency data. Journal of Fish Biology. 56: 758-773 Froese, R. and Pauly, D., 2015. FishBase. World Wide Web electronic publication. www.fishbase.org , Version (09/2015). Holčik, J., 1999. Rhodeus sericeus (Pallas, 1776). In: Banarescu, P.M. [Ed.] The Freshwater Fishes of Europe 5 I.Cyprinidae: Wiebelsheim: AULVA Verlag. pp. 1-32. Jonsson, N.and Jonsson. B., 1999. Trade-off between egg mass and egg number in brown trout . Journal of Fish Biology. 55: 767-783. Koutrakis, E.T., Kokkinakis, A.K., Tsikliras, A.C. and Elefthe riadis, E.A., 2003. Characteristics of the European bitterling Rhodeus amarus (Cyprinidae) in the Rihios River, Greece. J. Freshwater Ecol. 18: 615-624. Lagler, K.F., Bardach, J.E.and Miller, R.R., 1962. Ichthyology the University of Michigan, John Wiley and Sons, USA., pp:491. Meffe, G.K. and Snelson, F. F., 1993. Lipid dynamics during reproduction in two livebearing fishes, Gambusia holbrooki and Poecilia Latipinna. Canadian Journal of Fisheries and Aquatic Sciences. 50: 2185-2191. Nikolsky, G. W., 1969. Theory of fish population dynamics. Lzd. Nauka. Moskova. 382(In Russian). Patimar R., Adineh, H. and Mahdavi, M.J., 2009a. Life history of the Western Crested Loach Paracobitis malapterura in the Zarrin-Gol River, East of the Elborz mountains (Northern Iran). Biologia, 64: 350-355. Patimar,R., Seifi,T., Farahi, A. and Ezzati, M., 2009b. Life history pattern of the bitterling Rhodeus amarus (Bloch ,1782)in Siahroud River(Southern Caspian Sea-Iran). J. Hydrology & Ecohydorbiology. 1: 87-95. (ISI). Peters, R.H., 1983. The Ecological Implications of Body Size. Cambridge University Press, Cambridge. 238p. Smith, C., Reichard, M., Jurajda, P. and Przybylski, M., 2004. The reproductive ecology of the European bitterling (Rhodeus sericeus). Journal of Zoology, 262: 107–124 Tarkan, A.S., Gaygusuz, O., Gursoy, C. and Acipinar, H., 2005. Life history pattern of an Eurasian Cyprinid, Rhodeus amarus, in large drinking-water system (Omerli Dam lke-Istanbul, Turkey). Journal of the Black Sea /. Mediterranean Environment. 11: 205-224. Wootton, R.J., 1990. Ecology Of Teleost fishes, Chapman and Hall Ltd. 404p. Zar, J.H., 1996. Biostatistical Analysis. Prentice-Hall, New Jersey.662p.