Abstract
The histological and ultra-structure of the pituitary in diploid red crucian carp (Carassius auratus red var.), triploid crucian carp and allotetraploid hybrids within and after the breeding season were comparatively studied. The result showed that there were six endocrine cell types in the pituitary of these three kinds of fishes, and there was an obvious difference in cell size among different ploidy level fishes. As for the same type of pituitary cells, the cell size was increased gradually with the increasing ploidy level. In the breeding season, the allotetraploid hybrids had higher proportion of gonadotropin cells (GTH) than triploids, and the trploids had higher proportion of GTH than diploids. The results were related to the earlier sexual maturity of allotetraploid hybrids and sterility of triploid crucian carp. On the other hand, among the three kinds of fishes, the proportion of somatotropin (STH) cells in triploids crucian carp was the highest, whereas that in allotetraploid hybrids was the lowest. The results might be connected with the faster growth rate of triploids and slower growth rate of allotetraploid hybrids. In addition, in GTH cells of meso-adenohypophysis after the breeding season, there were many endocrine particles in triploids, while those endocrine particles were released from the cells in allotetraploids and diploids. This result showed that the sterility of triploid crucian carp might be related to the hormone which was not released from the GTH cells. In a word, the present study indicated that the differences in the structure of pituitary among different ploidy level fishes contributed to their difference in the growth rate and gonadal development.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Liu Y, Zhou G J. Cytological study on gonadal development of F1 hybrids produced by crossing Carassius auratus (♀) with Cyprinus carpio (♂). Acta Hydrobiol Sin (in Chinese), 1986, 10(2): 101–108
Liu S J, Liu Y, Zhou G J, et al. The formation of tetraploid stocks of red crucian carp × common carp hybrids as an effect of interspecific hybridization. Aquaculture, 2001, 192: 171–186
Babiak I, Dobosz S, Goryczko K, et al. Androgensis in rainbow trout using cryopreserved spermatozoa: the effect of processing and biological factors. Theriogenology, 2002, 57: 1229–1249
Liu S J, Hu F, Zhou G J, et al. Gonadal structure of triploid crucian carp produced by crossing allotetraploid hybrids of Carassius auratus red var. (♀) × Cyprinus carpio L. (♂) with Japanese crucian carp(Carassius auratus cuvieri T. et al). Acta Hydrobiol Sin (in Chinese), 2002, 24(4): 301–306
Li J Z, Zhang X J, Liu S J et al. Studies on the gonadal development in allotetraploid hybrids of Carassius auratus red var. (♀) × Cyprinus carpio L. (♂). Acta Hydrobiol Sin (in Chinese), 2002, 26(2): 116–122
Sun Y D, Liu S J, Zhang C, et al. The chromosome number and gonadal structure of F9-F11 allotetraploid crucian carp. Acta Genetica Sinica (in Chinese), 2003, 30(5): 414–418
Liu S J, Sun Y D, Zhang C, et al. Triploid crucian carp — allotetraploid hybrids (♀) × goldfish (♂). Acta Genet Sin (in Chinese), 2004, 31(1): 31–38
Feng H, Zeng Z Q, Liu S J, et al. Studies of F1 of transgenic allotetraploid hybrids of Carassius auratus red var. (♀) × Cyprinus carpio L. (♂). Acta Genet Sin (in Chinese), 2002 29(5): 434–437
Lu S Q, Liu S J. Studies on histological and ultra-structure of the immature and the mature adenohypophysis of Ctenopharyngodon idellus. Acta Sci Nat Univ Norm Hunan (in Chinese), 1996 19(3): 76–82
Lu S Q, Liu Y, Chen S Q, et al. Studies on the histological and ultra-structure of STH cells of adenohypophysis in Ctenopharyngodon idellus. Zool Res (in Chinese), 1997, 17(1): 75–78
Weng Y Z, Lin Z J, Hong W S, et al. Histophysiological study and pituitary gland in grey mullet, Mugilcephalus. J. Oceanogr Taiwan Strait (in Chinese), 2000, 19(2): 192–196
Jia C H, Chen T, Li S M, et al. Ultrastructure of the neurohypophysis of Cypinus carpio. J. Ocean Univ Qingdao (in Chinese), 1997, 27(3): 359–365
Xie B W, Yue X J, Zhang Y G, et al. Histological and histochemistrical studies on the pituitary in Pelteobagrus vachelli. J. Southwest China Normal Univ (Natural Science) (in Chinese), 2004, 29(1): 114–118
Tiwary B K, Kirubagaran R. Gonadotropin releasing hormone (GnRH) neurons of triploid catfish, Heteropnestes fossilis (Bloch): An immunocytochemical. Comp Biochem Physi, Part A, 2002, 132: 375–380
Liu Y. Propagation Physiology of Main Cultivated Fish in China (in Chinese). Beijing: Agricultural Publishing House, 1993. 22–23
Mattheij J. The ACTH cells in the adenohypophysis of the Mexican cavefish, Anopticchthys jordani, as identified by metopitone (su4885) treatment. Z. Zellforsch Mikrosk Anat, 1968, 93: 588–595
Liu S J, Sun, Y D, Li S F, et al. Analysis of gonadosomatic indexes of the triploid crucian carp. J Fish China (in Chinese), 2002, 26(2): 111–114
Liu Q, Wang Y Q, Liu S J, et al. Comparative studies on blood and blood cells in different ploidy fishes. Prog Nat Sci (in Chinese), 2004, 14(10): 1111–1117
Lou Y D. Studies on fish polyploidy breeding abroad. J Fish China (in Chinese), 1984, 8(4): 343–351
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Long, Y., Liu, S., Huang, W. et al. Comparative studies on histological and ultra-structure of the pituitary of different ploidy level fishes. SCI CHINA SER C 49, 446–453 (2006). https://doi.org/10.1007/s11427-006-2028-8
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11427-006-2028-8