Abstract
The paired ‘H’-shaped testes ofPotamon koolooense show histomorphological changes during various stages of maturity. Seminiferous tubules show different stages of spermatogenesis. A few undifferentiated or resting spermatogonia supply a new crop of germ cells for the next breeding season. In a tubule the meiotic divisions occur more or less synchronously in all the primary or secondary spermatocytes. Sperm consists of a head and mitochondrial vesicle which encloses axial filament and distal centrosome. Spermatogenesis activity is seasonal. Spermatogenesis begins in January-February, progresses slowly through March, reaching its peak in April-May. However, all the tubules do not mature simultaneously. Spermiation occurs during May and June, the spermatogenesis ceases gradually, and by December the testes enter a brief period of rest.
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References
Aoto T 1952 Sexual phases in prawn,Pandulus kessleri (Zern), with special reference to the reversal of sex;J. Fac. Sci. Hokkaido Univ. 11 1–20
Baker R C and Rosof J A 1927 Spermatogenesis inBranchipus vernalis. Part I. The testes and spermatogonial division;Ohio J. Sci. 27 175–186
Binford R 1913 The germ cells and process of fertilization in the crab,Menippe mercertaria;J. Morphol. 24 147–202
Black J B 1966 Cyclic male reproductive activities in dwarf crayfishes,Cambarellus shufeldti (Faxon) andCambarellus puer (Hbbs.);Trans. Am. Micro. Sci. 85 214–232
Brown G G 1966 Ultrastructural studies of sperm morphology and sperm-egg interaction in decapod,Callinectes sapidus;J. Ultrastr. Res. 14 425–440
Chandran M. R 1968 Studies on marine crab,Charybdis variegata. 1. Reproductive and nutritional cycle in relation to breeding periodicities;Proc. Indian Acad. Sci. B67 215–223
Chiba A and Honma Y 1971 Studies on gonad maturity in some invertebrates. II. Structure of reproductive organs of the lined shore crab;Bull. Jpn. Soc. Sci. Fish. 37 699–706
Chiba A and Honma Y 1972 Studies on the gonad maturity in some marine invertebrates. VI. Seasonal changes in testes of the lined shore crab;Bull. Jpn. Soc. Sci. Fish. 38 317–322
Cronin L E 1947 Anatomy and histology of the male reproductive system ofCallinectes sapidus (Rathbun); J. Morphol.81 209–233
Dhillon B 1966 Cytochemical changes in cell organelles in spermatogenesis of decapod Crustacea;Res. Bull. Punjab Univ. 17 55–56
Diwan A D and Nagabhushanam R 1974 Reproductive cycle and biochemical changes in the gonad of freshwater crab,Barytelphusa cunicularis (Westwood);Indian J. Fish. 21 164–176.
Fasten N 1926 Spermatogenesis of the black clawed crab,Lophopanopeus bellus;Biol. Bull. (Woodshole)1 277–293
Giese A C 1959 Annual reproductive cycle of marine invertebrates. Comparative physiology;Ann. Rev. Physiol. 21 547–576
Gupta S R and Chatterji K B 1976 Anatomical observations of the internal male reproductive organs ofScylla serrata;Indian J. Physiol Allied Sci. 30 34–42
Haley S R 1973 On the use of morphometric data as a guide to reproductive maturity in the ghost crab,Ocypode ceratophthalamus (Pallas) (Brachyura, Ocypodidae);Pac. Sci. 27 350–362
Iyer Muthuswamy M S 1933 Spermatogenesis ofParatelphusa hydrodromous with a note on oogenesis;J. Mysore Univ. 7 206–232
King J E 1948 A study of the reproductive organs of common marine shrimp,Penaeus setiferous (Linn.);Biol Bull 94 244–250
Langreth S G 1969 Spermatogenesis in cancer crabs;J. Cell. Biol. 43 575–603
Nath V 1932 The spermatid and sperm of the crab,Paratelphusa spinigera;Quart. J. Micro-Sci. 75 543–556
Nath V 1965Animal gametes (Male) (Bombay: Asia Publishing House) pp. 78–93
Rahman A A 1967 Reproductive and nutritional cycles of the crab,Portunus pelagicus (Linn.) of Madras coast;Proc. Indian Acad. Sci. B65 76–82
Ryan E P 1967 Structure and function of the reproductive system of the crab,Portunus sanguinolentus (Horb.). I. The male system;Proc. Symp. Crustacea Ernakulum, Mar. Biol. Assoc. India 2 506–521
Spalding J S 1942 The nature and formation of spermatophore and sperm plug inCarcinus maenas;Quart. J. Micro. Sci. 183 399–422
Subrahmanyam C B 1963 A note on the reproductive cycle of the prawn,Penaeus indicus (N. Edw.) of Madras coast;Curr. Sci. 4 165–166
Vasisht H S and Relan U 1971 Anatomy ofParatelphusa masoniana (Hend.). V. Reproductive system;Res. Bull. Punjab Univ. 22 13–18
Not consulted in original Wielgus S E 1976 Morphological and histological changes in the male gonad of the American crayfish,Orconectes limosus (Refinesque) in annual cycle;Acta Biol. 19 87–105
Wolfe A F 1971 A histological and histochemical study of the male reproductive system ofArtemia (Crustacea, Branchiopoda);. Morphol. 135 51–70
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Joshi, P.C., Khanna, S.S. Structure and seasonal changes in the testes of a freshwater crab,Potamon koolooense (Rathbun). Proc Ani Sci 91, 439–450 (1982). https://doi.org/10.1007/BF03186141
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DOI: https://doi.org/10.1007/BF03186141