Asian Journal of Biological Sciences1996-3351xxxx-xxxxScience International10.3923/ajbs.2019.860.868LagadeVishwajeet Mahadev TawareShital Shantaram LagadeSwapnaja Vishwajeet MuleyDeepak Vishwanath 42019124Background and Objective: Histological studies give the clear and accurate forecasting on alterations of cellular framework under various stresses. Keeping this vision, present study was undertaken to highlight the cytological alterations in reproductive organs of estuarine clams like Katleysia opima and Meretrix meretrix under exposure of various temperature ranges. Materials and Methods: In this study, two selected estuarine clams were exposed to various temperatures ranges for 192 h such as 14, 19, 24 and 34°C, respectively. After exposure, male and female gonads (testis and ovary) were dissected out for cytological observation. The staining procedure was done by using Harris hematoxylin and alcoholic eosin stain (HE technique). Results: In K. opima clam, the male and female gonad was recorded severe alterations at high temperature (34°C) followed by 14, 19 and 24°C, respectively. However, in M. meretrix male gonad was noted major alteration at low temperatures (14°C) followed by 34, 19 and 24°C, respectively. Whereas, the female gonad of M. meretrix showed as like K. opima i.e., at high temperature (34°C) followed by 14, 19 and 24°C, respectively. Conclusion: In this attempt, the both extreme high temperature and low temperature produced adverse impact on gonadal cells and developmental process of clams. Experimental temperature shows significant and major cytological alterations in M. meretrix clam than K. opima. Present study reveals that the M. meretrix clam is quite more sensitive than K. opima to the changing temperatures ranges. These cytological alterations of estuarine clams that could be used to diagnosis the structural changes in cellular architecture under changing temperatures. This base line information would more beneficial particularly for ecologically and economically important clam species.]]>Jespersen, A., J. Lutzen and G. Itani,2009Pseudopythina subsinuata (Bivalvia; Galeommatoidea).]]>2485767Sastry, A.N.,1970Aequipecten irradians Lamarck.]]>1385665Sastry, A.N.,19791979pp: 113-292pp: 113-292Adiyodi, R.G. and K.G. Adiyodi,1983Page: 700Page: 700MacDonald, B.A. and R.J. Thompson,1985Placopecten magellanicus. I. Growth rates of shell and somatic tissue.]]>25279294Steele, S. and M.F. Mulcahy,1999Crassostrea gigas in Southern Ireland.]]>79673686Kamble, S. and D. Muley,2015Katelysia opima.]]>23943Mann, R.,1979Tapes philippinarum (Adams and Reeve, 1850).]]>38121133Calabrese, A.,1970Mulinia lateralis (Say), in Long Island sound.]]>12265269Keck, R.T., D. Maurer and H. Lind,1975148243258Hesselman, D.M., B.J. Barber and N.J. Blake,1989Mercenaria spp. in the Indian river Lagoon, Florida.]]>84349Kanti, A., P.B. Heffernan and R.L. Walker,1993Spisula solidissima similis (Say, 1822), from St. catherines Sound, Georgia.]]>12255261Lubet, P.E.,19941994pp: 138-173pp: 138-173Patel, B. and D.J. Crisp,1960Operculate barnacles.]]>39667680Lannan, J.E., A. Robinson and W.P. Breese,1980Crassostrea gigas: II. Broodstock conditioning to maximize larval survival.]]>21337345Ruiz, C., D. Martinez, G. Mosquera, M. Abad and J.L. Sanchez,1992Ostrea edulis, from San Cibran (Galicia, Spain).]]>1126774Suja, N. and P. Muthiah,2009Marcia opima (Gmelin).]]>512125Newell, R.I., T.J. Hilbish, R.K. Koehn and C.J. Newell,1982Mytilus edulis L. (Bivalvia, Mytilidae) from localities on the east coast of the United States.]]>162299310Paulet, Y.M. and J. Boucher,1991Pecten maximus?]]>196170Osada, M., S. Nakamura and A. Kijima,2007Patinopecten yessoensis.]]>2007Auffret, M.,198846101107Livingstone, D.R. and R.K. Pipe,19921992pp: 425-456pp: 425-456Au, D.W.T.,200448817834Suja, N. and P. Muthiah,2007Marcia opima, from two geographically separated areas of India.]]>273700710Honkoop, P.J.C. and J. Van der Meer,1998220227246Laing, I., S.D. Utting and R.W.S. Kilada,19871132338Lubet, P., J.P. Gimazane and G. Prunus,1981M. galloprovincialis (Lmk.) Mollusque Lamellibranche a la limitemeridionale de 1981 son aire de repartition.]]>11157170Boyle, J.P. and T.P. Yoshino,2000Biomphalaria glabrata (Say, 1818) (Planorbidae) and a description of the stages of the egg-laying process.]]>668393