Changes in sperm parameters of sex-reversed female rainbow trout during spawning season in relation to sperm parameters of normal males

被引:30
|
作者
Nynca, J. [1 ]
Kuzminski, H. [2 ]
Dietrich, G. J. [1 ]
Hliwa, P. [3 ]
Dobosz, S. [2 ]
Liszewska, E. [1 ]
Karol, H. [1 ]
Ciereszko, A. [1 ]
机构
[1] Polish Acad Sci, Dept Gametes & Embryo Biol, Inst Anim Reprod & Food Res, PL-10747 Olsztyn, Poland
[2] Inland Fisheries Inst, Dept Salmonid Res, Rutki, Zukowo, Poland
[3] Univ Warmia & Mazury, Dept Ichthyol, Olsztyn, Poland
关键词
Rainbow trout; Sex-reversed females; Spawning season; Milt; Seminal plasma; Sperm motility parameters; CARP CYPRINUS-CARPIO; ONCORHYNCHUS-MYKISS; SEMINAL PLASMA; REPRODUCTIVE SEASON; SALMO-GAIRDNERI; TELEOST FISH; MOTILITY; SEMEN; CRYOPRESERVATION; FERTILIZATION;
D O I
10.1016/j.theriogenology.2011.11.001
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
The production of all-female populations has important economic benefits in commercial rainbow trout aquaculture. The procedure commonly implemented to produce all-female stocks centers on the sex reversal of rainbow trout females via the administration of androgens in the early developmental stages, followed by the egg fertilization of normal females with semen from sex-reversed females (srf). However, there is no information regarding the quality of semen from srf rainbow trout throughout the spawning season. This information is critical because the quality of srf semen is highly variable. The aim of the study was to determine the changes in the semen parameters of srf rainbow trout throughout the duration of the spawning season. Sperm concentration, sperm motility parameters, and the biochemical parameters of seminal plasma (protein concentration, antitrypsin activity, osmolality, and lactate dehydrogenase activity) from srf were monitored during the spawning season and compared with normal male rainbow trout. The observed values of sperm, protein concentration, antitrypsin activity, osmolality, and lactate dehydrogenase activity of seminal plasma were all higher in comparison with normal males. Semen from srf was therefore characterized by a lower sperm motility during each period of the spawning season, in comparison with normal males, approximately 1.8, 1.5, and 1.7 times, respectively for the beginning, middle, and end of the spawning season. The percentage of sperm motility from srf and normal males were affected by the spawning season in the same way, as the highest values in the middle of the spawning season demonstrate (60% and 91% for srf and normal males, respectively). Spermatozoa of srf are characterized by a lower speed and a more curvilinear trajectory of movement as compared with that of normal males. The patterns of changes during the spawning season in sperm concentration, sperm motility parameters, as well as osmolality, and lactate dehydrogenase activity of the seminal plasma of srf were different in comparison with normal males. Our results could be important for fish breeders in regard to the spawning control of srf rainbow trout, as well as for the development of short- and long-term sperm storage procedures. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码:1381 / 1389
页数:9
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