04484cas a2200433 4500 20260818212347.0 970205s1996 th uu m rtt 000 a1eng d .b11589802 AIT Thesis no.AE-96-27 Wang, Weimin Reproductive biology and artificial insemination of icefish (Neosalanx pseudotaihuensis) in the Xujiahe reservoir, Hubei, China Bangkok : Asian Institute of Technology, 1996 109 leaves Thesis ; no. AE-96-27 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1997 Samples collected monthly from Xujiahe Reservoir from May 1995 to April 1996 have been used to elucidate various aspects of the reproductive biology of Neosalanx pseudotaihuensis in this reservoir. The gonads of N pseudotaihuensis started to develop rapidly in the early spring. Spawning was initiated in March, peaked in the mid-April and ended in May, and as the new generation enters the population, the old generation disappears. Fecundity ranged from 418 to 1370 with a mean of 950. The mature eggs are small, transparent and spherical and have a mean diameter of 0.59 mm. The larvae are characterized by an elongate, colorless and transparent body. The success of N pseudotaihuensis in Xujiahe Reservoir can be attributed in part to its production of very large numbers of eggs at a time when condi~ions in the reservoir are relatively stable. Comparisons between the reproductive biology of N pseudotaihuensis and that of other indigenous teleosts that spawn in Xujiahe Reservoir show that this species exhibits a wide range of reproductive strategies. A series of experiments to study the effect of post-death duration of broodfish of N pseudotaihuensis on fertility was carried out from December 1995 to May 1996 in Xujiahe Reservoir. Effects on fertility included: the post-death duration of female broodfish at insemination, the post-death duration of male broodfish, the post-death duration of both female and male broodfish and comparisons on viability of inseminated eggs and sperm kept between in natural conditions and in the ice vacuum jar. The fertility was completely lost after 240 minutes of the death of broodfish at the temperature of 10 0 c. The post-death duration of males effected more greatly than the post-death duration of females in fertility and there was a significant interaction between them. Sperm and eggs could be prolonged the viability and were able to fe1tilize after short-term conservation at low temperature ( 0 °q. Artificial insemination of N pseudotaihuensis should be conducted within 105 minutes after the death of broodfish. The egg and larval development was observed and described. The duration of egg 0 0 development was about 10 days at 10 ± 0.5 C and 7 days at 13 ± 0.5 C. N pseudotaihuensis hatched at mean body length of 2.7 mm, grew to 3.9 mm in a week and 5 .3 mm at two weeks. Fishes Artificial spawning China Hubei Yakupityage, Amararatne, Chairperson Little, D. C. Co-Chairperson Lin, C. K., Examination committee Asian Institute of Technology. Thesis ; no. AE-96-27 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B14859 .b11589802 mnait z 250317 0 970320 m a z 0 mnait mnarc mnait mnarc 22 40 20 Barcode : 30050120577266 CREATED : 2013-11-22 RECORD # : i12748699 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120372403 CREATED : 2016-02-06 RECORD # : i13011510 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120243638 CREATED : 2016-01-09 RECORD # : i13053383 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121069222 CREATED : 2023-05-09 RECORD # : i13462945 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 100609 100609 0 0 0 0 MAIN MAIN mnarc 2026-08-18 50.00 0 AIT Thesis no.AE-96-27 30050120577266 2026-08-18 21:23:47 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.AE-96-27 30050120372403 2026-08-18 21:23:47 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.AE-96-27 30050120243638 2026-08-18 21:23:47 4 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.AE-96-27 30050121069222 2026-08-18 21:23:47 1 2026-08-18 20