carassius C.auratus. Carassius spermatogenesis oogenesis tertiary vitellogenesis oocytes (3)

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1 Carassius auratus Carassius.2009 أ 2008 spermatogenesis primary ا أل secondary spermatocytes spermatozoa spermatogonia spermatids spermatocytes chromatin perinucleolaroocyte secondary vitellogenesis hyaline oogenesis oogonia nucleolar oocytes primary vitellogenes tertiary vitellogenesis oocytes (13) C. C.auratus. (3) C.carassius (5) carassius 9;

2 AL- gonadotrophin (1) (14) (6) C. auratus Giesy C.auratus C. auratus C.auratus (11) Noor (25) Trudeau 11 (26) (20) (18) (17) 180 C. (48) (16) rotery microtom Equeous Eosin Harris haematoxylin Olympus (4)

3 C. spermatogenesis spermatocyte (1 spermatogonia -1 primary spermatocytes lobules 2 (1 secondary spermatocytes 3 (2 spermatids 4 (3

4 spermatozoa 5 (4 (3 seminiferous tubules Oogenesis (15) (24) (5 Oogonia 1 chromatin nucleolar oocytes perinucleolar oocytes 3 granulose Theca 6 zonaradiata primary vitellogenesis yolk vesciles 4

5 ( (8 secondary vitellogenesis zonaradiata tertiary oocytes ( ( hyaline oocytes 7 Ateria cells zonaradiata (8) (23) (22) Nikolsky (12) Bennet

6 AL-Noor(11) (21) Nikolsky (19) Sc1 Sg Sc1 Sg X 1

7 Sc2 X (Sc2 2 Sz St X1 Sz St 3 X 4

8 100X Oo Oo Uv 5 B Tv A CNO PNO PNO 100X B Tv 6 A و CNO

9 Pv Uv Uv X Uv Pv 7 Sv 100X Sv 8 :9

10 Yg X Yg Ho 9 Carassius (2008) auratus(l.1758) (21) Aspius vorax Heckel, (1999) 2 77 (2002) -3 Carassius -519 :(2)17 carassius (L.) (Hamilton -Buchanan) (1998) 4 Tenualosa ilisha 164 Carassius : (1) (2006) auratus 5 C.auratus auratus s (2008) Carassius auratus gibelio 6 ::

11 (1) Mugil dussumieri (Valscar) (1982) Liza abu (Heckel) (1997) Liza carinata 9- Ahmed,S.M., Saoud,H.A.AL.Shami,E.J.(2002).Blood Ammonia and sodium levels in Carassius carassius (Cyprinidae) in Response to salinity changes.j.mar.mesop., 17(1): Ahmed,H.A.AL-Mukhtar, M.A. and.al-adhub.a.h.y.(1984).the reproductive biology of Garasobarbus luteus in AL-Hammar marsh,iraqo, Cybium, 8: AL-Noor,S.S.(2010).Population status of gold fish Carassius auratus in restord East Hammar Marsh,Southern Iraq. JKAU:Mar. Sci., 21(1): Bennet,G.W.(1970).Managment of lakes and ponds 2 nd ed.van Nostr and Reinhold Company. New York. 375p. 13- Coad,B.W.(1991).Fishes of the Tigris-Euphrates Basini Acritical chech.list. Ichthyology section.canadian Museum of Nature. Publication, 150 pp. 14- Giesy, J. P. Snyder, E. M. and Nicholes, K. M.(2003). Examination of reproductive endpoint in gold fish Carassius auratus exposed in situ to municipal sewage treatment plant effluent discharges in Michigan, USA. Enviro. Toxic. Chem. 22(10): Gwo,J.C.and Gwo,H.H.(1993).Spermatogenesis in The Black progy, A Canth o Pagrus Sch lrgeli (Teleostei : PerciFormes : Sparidae). Molec. Reprod. & Develo., 36 :75 83 P. 16- Humuson, G. L, (1979). Animal tissue technique. 2nd W. H. Freeman and Comp, San francisko. -8 :;

12 17- Hussein, S. A. (1983). The biology of the fresh water eel (Anguilla anguilla L.) in four tributaries of river tweed, Scotland. ph. D. Thesis. Univ. Edin burgh., 390 pp. 18- Kukuradze, A. M. and Mar nash, I. F. (1975). Data on Prussian carp Carassius auratus gibelio (Bloch ). Ecology in the lower Danub l. vop. l. khtiol. 15(3): Lagler, K.F Fresh water fishery Biology.2 nd Education.WM.C. Brown company pblishers.421 pp. 20- Nikolsky, G.W. (1956). Fish of Amurbasin. Izd.v. ANSS SR.SSI. PP.(in Russian). 21- Nikolsky, G.W. (1963). The ecology of fishes. translated from the Russian by Birkett,L.Academic press and NewYork.350 pp. 22- Nikolsky, G.V.(1969). Theory of fish population dynamics.english translation,oliver and Boyed,Edinbury.323 p. 23- Rashed,K.H.(1993).Histological change in the ovarian stages of Liza abu (Heckel).Mar.Mesop., 8: Rashed, K.H.and Salman, N.A. (1995). Assesment of reproductive cycle and testicular activity in the fresh water fish Liza abu from shatt AL-Arab river, Iraq.BJS-B67B. 25- Trudeau, V.L.(1997).Neuroendocrine regulation of gonadotrophin 11 releases and gonadal growth in the gold fish Carassius auratus. Reviews of reproduction. 2: Zukuv, P. I. (1965). Fishes of Belarussia. Naukai Teknika,Minsk. 37 pp. ;8

13 Basrah. J.Agric.Sci., 24 ( )2011 HISTOLOGICAL STUDY OF GONADAL CYCLICAL VARITIONS IN CARASSIUS Entesar Sh. Hashem Department of fisheries and Marine Resources, Agriculture College, Basrah University, Basrah, Iraq SUMMARY Seasonal variations in gonads of C. uratusa have been studied in Garmat Ali river during May April Spermatogenesis was described as five types of testicular cells were reconeised spermatogonia, primary spermatocytes, secondary spermatocytes, spermatids and spermatozoa. Seven developing stages were recognized during oogenesis through histological examination of ovarian cells oogonia, chromatin nucleolar oocytes, perinucleolar oocytes,primaryvitellgenesis,secondary vitellgenesis,tertiary vitellgenesis and hyaline oocytes.theconclusion of using C.. Appeared to be as serial spawners with long spawning season starting during March and ending until August and the male was maturd faster than female. ;8

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