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Reproductive performance in successive generations of the brine shrimp Artemia salina (Crustacea: Anostraca) from the Sebkha of Sidi El Hani (Tunisia)
Animal Reproduction Science ( IF 2.2 ) Pub Date : 2021-01-07 , DOI: 10.1016/j.anireprosci.2021.106692
Imene Sellami 1 , Hachem Ben Naceur 1 , Adnane Kacem 1
Affiliation  

Artemia salina cysts collected from the Sebkha of Sidi El Hani hatched and cultivated in the laboratory were investigated. Nauplii were acclimated to laboratory conditions until reproductively mature (Generation 1; G1). Reproductive performance in terms of total cysts and nauplii offspring, days between brood production, and cyst and nauplii numbers was evaluated. Nauplii produced by specimens in the G1 were defined as those of G2 with there also being third (G3) and fourth (G4) generations. The aims were to evaluate Artemia salina in aquaculture conditions with the long-term aim of developing a system for “artemiculture”. There was a larger number of cysts or nauplii per brood between G1 (60.7 ± 10.9 nauplii or cysts/female) and subsequent generations, notably G2 (122 nauplii or cysts/female, P < 0.05). The mean number of cysts and nauplii per female increased from the first and last brood. Number of cysts produced per female increased markedly (P < 0.05) from G1 (54.5 ± 14.2) to G3 (128.9 ± 39.2). Percentage of females producing nauplii increased from G1 (20 %) to G4 (100 %). There was, therefore, an increase in percentage of ovoviviparous offspring (nauplii) per female (P < 0.05) from G1 (7%) to G4 (71 %). There were no differences, however, between mean numbers of broods per female, and numbers of days between broods. The results indicate there are variations in reproduction from oviparity to ovoviviparity as consecutive generations of Artemia salina are cultivated. In summary, there was a rapid adaptation of Artemia salina of Sidi El Hani to laboratory conditions.



中文翻译:

来自 Sidi El Hani(突尼斯)Sebkha 的丰年虾(甲壳纲:Anostraca)的连续世代繁殖性能

研究了从 Sidi El Hani 的 Sebkha 收集的在实验室孵化和培养的卤虫孢囊。无节幼体适应实验室条件直到生殖成熟(第 1 代;G1)。评估了总包囊和无节幼体后代、育雏间隔天数以及包囊和无节幼体数量方面的繁殖性能。G1期标本产生的无节幼体被定义为G2期的无节幼体,也有第三代(G3)和第四代(G4)。目的是评估水产养殖条件下的卤虫,长期目标是开发“卤虫养殖”系统。在 G1(60.7 ± 10.9 个无节幼体或囊肿/雌性)和随后的世代之间,每窝有更多的囊肿或无节幼体,特别是 G2(122 个无节幼体或囊肿/雌性,P  < 0.05)。每只雌性的平均囊肿和无节幼体数量从第一个和最后一个育雏开始增加。每个雌性产生的包囊数 从 G1 (54.5 ± 14.2) 到 G3 (128.9 ± 39.2)显着增加 ( P < 0.05)。生产无节幼体的雌性百分比从 G1 (20%) 增加到 G4 (100%)。因此, 从 G1 (7%) 到 G4 (71%),每个雌性的卵胎生后代 (无节幼体) 的百分比增加 ( P < 0.05)。然而,在每只雌性的平均育雏数和育雏之间的天数之间没有差异。结果表明,随着连续几代卤虫的培养,从卵生到卵胎生的繁殖存在差异。总之,有一个快速的适应Sidi El Hani 的卤虫对实验室条件。

更新日期:2021-01-12
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