南方水产科学
南方水產科學
남방수산과학
SOUTH CHINA FISHERIES SCIENCE
2014年
5期
24-29
,共6页
刘永新%周勤%张红涛%姜长波%张福崇
劉永新%週勤%張紅濤%薑長波%張福崇
류영신%주근%장홍도%강장파%장복숭
温度%红鳍东方鲀%生长%性别分化%家系
溫度%紅鰭東方鲀%生長%性彆分化%傢繫
온도%홍기동방돈%생장%성별분화%가계
temperature%redfin puffer%growth%sex differentiation%family
研究了全同胞家系的红鳍东方鲀( Takifugu rubripes)早期幼苗在4个不同温度(15℃、17℃、19℃和正常养殖温度21~25℃)条件下,水温对其生长性状和雌雄性别组合的影响。结果表明,培育温度越低,鱼苗生长速度越慢。对照组(正常养殖温度21~25℃)的幼苗生长最快,其次依次为19℃、17℃和15℃。30~90日龄,不同温度处理组绝对增长率和生长指标具有相似变化趋势。70日龄前,正常养殖温度组的绝对增长率和生长指标最高;80~90日龄,19℃组最高。统计180日龄各温度组雄性和雌性个体比例,利用组织学切片法辨别雄雌。15℃组雄性和雌性比例为86.67%和13.33%,17℃组为70.00%和30.00%,19℃组为56.67%和43.33%,正常养殖温度组为53.33%和46.67%。低温能够有效提高红鳍东方鲀家系雄性个体比例,15℃组为最佳诱导温度处理组。
研究瞭全同胞傢繫的紅鰭東方鲀( Takifugu rubripes)早期幼苗在4箇不同溫度(15℃、17℃、19℃和正常養殖溫度21~25℃)條件下,水溫對其生長性狀和雌雄性彆組閤的影響。結果錶明,培育溫度越低,魚苗生長速度越慢。對照組(正常養殖溫度21~25℃)的幼苗生長最快,其次依次為19℃、17℃和15℃。30~90日齡,不同溫度處理組絕對增長率和生長指標具有相似變化趨勢。70日齡前,正常養殖溫度組的絕對增長率和生長指標最高;80~90日齡,19℃組最高。統計180日齡各溫度組雄性和雌性箇體比例,利用組織學切片法辨彆雄雌。15℃組雄性和雌性比例為86.67%和13.33%,17℃組為70.00%和30.00%,19℃組為56.67%和43.33%,正常養殖溫度組為53.33%和46.67%。低溫能夠有效提高紅鰭東方鲀傢繫雄性箇體比例,15℃組為最佳誘導溫度處理組。
연구료전동포가계적홍기동방돈( Takifugu rubripes)조기유묘재4개불동온도(15℃、17℃、19℃화정상양식온도21~25℃)조건하,수온대기생장성상화자웅성별조합적영향。결과표명,배육온도월저,어묘생장속도월만。대조조(정상양식온도21~25℃)적유묘생장최쾌,기차의차위19℃、17℃화15℃。30~90일령,불동온도처리조절대증장솔화생장지표구유상사변화추세。70일령전,정상양식온도조적절대증장솔화생장지표최고;80~90일령,19℃조최고。통계180일령각온도조웅성화자성개체비례,이용조직학절편법변별웅자。15℃조웅성화자성비례위86.67%화13.33%,17℃조위70.00%화30.00%,19℃조위56.67%화43.33%,정상양식온도조위53.33%화46.67%。저온능구유효제고홍기동방돈가계웅성개체비례,15℃조위최가유도온도처리조。
To analyze the effect of water temperature on growth trait and sex differentiation of redfin puffer( Takifugu rubripes),we reared a full-sib family at four temperatures of 15 ℃,17 ℃,19 ℃ and normal temperature( 21~25 ℃). The results showed that the growth rate of the fish decreased with decreasing cultivation temperature. The fingerlings in normal temperature group presented the highest growth rate,followed by 19 ℃,17 ℃ and 15 ℃ in descending order. For fish at 30~90 dph,different temperature groups had similar variation trends in absolute growth ratio and growth index. For fish before 70 dph and those at 80~90 dph,the normal temperature group and 19 ℃ group presented the highest absolute growth ratio and growth index,respectively. We used morphological examination and histological section to identify the ratio of males and females for fish at 180 dph. The percentages of males and females were 86. 67% and 13. 33% in 15 ℃ group,70. 00% and 30. 00% in 17 ℃ group,56. 67% and 43. 33% in 19 ℃ group as well as 53. 33% and 46. 67% in normal temperature group. In conclusion,low temperature produced effectively higher proportions of males and 15 ℃ group was the optimum treatment group.