| 引用本文: | 马本贺,王海华,马爱军,黄智慧,李燕华,王梦杰,孙志宾.温度对金红色大鳞副泥鳅(Paramisgurnus dabryanus)孵化、仔鱼活力和性别分化的影响.海洋与湖沼,2022,53(2):448-456. |
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| 温度对金红色大鳞副泥鳅(Paramisgurnus dabryanus)孵化、仔鱼活力和性别分化的影响 |
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马本贺,王海华,马爱军,黄智慧,李燕华,王梦杰,孙志宾
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1.江西省水产科学研究所 农业农村部湖泊渔业资源环境科学观测实验站 南昌市特种水产繁育与健康养殖重点实验室江西南昌 330039;2.中国水产科学研究院黄海水产研究所 农业农村部海洋渔业可持续发展重点实验室 青岛市海水鱼类种子工程与生物技术重点实验室 山东青岛 266071
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| 摘要: |
| 以大鳞副泥鳅(Paramisgurnus dabryanus)新品系“赣红1号”为对象,探究了不同温度(20,23,26,29,32℃)对其受精卵孵化、仔鱼活力和性别分化的影响。结果显示,当温度在20~32℃范围内时,培育周期和孵化周期与温度均呈负相关关系,均随着温度的升高而缩短。培育周期在各温度组间差异显著(P<0.05),孵化周期在29和32℃组间差异不显著,其余各组间均具有显著差异(P<0.05)。随着温度的升高,孵化率先升高后降低,26℃时孵化率达到最高;畸形率呈现与孵化率相反的趋势,26℃时畸形率最低,且显著低于20、29和32℃组(P<0.05);仔鱼的不投饵存活系数(SAI)随着温度的升高而逐渐降低,各组间差异显著(P<0.05),23℃时SAI值为59.77,最大可存活时间为15日龄;此外,雄性率随温度的升高而增加,高温可促进个体趋向雄性发育。研究发现“赣红1号”受精卵孵化、仔鱼活力和性别分化均受到温度的重要影响,结合生产实际和试验数据,其孵化和仔鱼培育的适宜温度应保持在23~26℃。 |
| 关键词: 大鳞副泥鳅 "赣红1号" 温度 孵化 仔鱼活力 性别分化 |
| DOI：10.11693/hyhz20210900223 |
| 分类号:S917 |
| 基金项目:江西省现代农业产业技术体系建设专项,JXARS-10号;九江市重点研发计划,S2021ZDYFN052号;江西省农牧渔业科研指导性课题,赣农厅办函201976-19号。 |
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| EFFECTS OF TEMPERATURE ON HATCHING, LARVAL VITALITY AND SEXUAL DIFFERENTIATION OF GOLDEN RED BIGSCALE LOACH PARAMISGURNUS DABRYANUS |
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MA Ben-He1, WANG Hai-Hua1, MA Ai-Jun2,3,4, HUANG Zhi-Hui2,3,4, LI Yan-Hua1, WANG Meng-Jie1, SUN Zhi-Bin2,3,4
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1.Jiangxi Fisheries Research Institute, Experimental Station of Lake Fishery Resources and Environment, Ministry of Agriculture and Rural Affairs, Nanchang Key Laboratory of Special Aquatic Breeding and Healthy Aquaculture, Nanchang 330039, China;2.Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences;3.Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs;4.Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China
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| Abstract: |
| The effects of different temperatures (20, 23, 26, 29, and 32 ℃) on the hatching of fertilized eggs, larval vitality, and sexual differentiation of Paramisgurnus dabryanus new line "Ganhong 1" were studied. The results show that when temperature was in the range of 20~32 ℃, the cultivation periods and hatching periods were negatively correlated with the temperature, and both were shortened with the increase of temperature. Significant difference was observed in cultivation periods among temperature groups (P<0.05). No significant difference was found in hatching periods between 29 and 32 ℃ groups but significant differences among other groups (P<0.05). With the increase of temperature, the hatching rate increased first and then decreased, and reached the highest at 26 ℃. The malformation rate showed the opposite trend to the hatching rate. The malformation rate was the lowest at 26 ℃, which was significantly lower than those in 20, 29, and 32 ℃ groups (P<0.05). The survival activity index (SAI) of larvae decreased gradually with the increase of temperature (P<0.05). The SAI value was 59.77 at 23 ℃ and the maximum survival length was 15 days. In addition, the male ratio increased with the increase of temperature, and high temperature could promote individual development towards male. It is found that the hatching of fertilized eggs, larval vitality, and sexual differentiation of “Ganhong 1” were significantly affected by temperature. Combined with the actual production and experimental data, the appropriate temperature for the hatching and larval cultivation of “Ganhong 1” should be kept at 23~26 ℃. |
| Key words: Paramisgurnus dabryanus "Ganhong 1" temperature hatching larval vitality sexual differentiation |
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