Although ruffe (Gymnocephalus cernua) are widely distributed in Eurasia, in some regions (i.e., North America) ruffe are considered an invasive species. There have been no reports on artificial reproduction of this species. A study, therefore, was conducted to evaluate reproduction of ruffe with results of specimens captured from their natural habitat and cultured (F₁ generation) specimens being compared. Spawning specimens from both stocks were treated with hormonal preparations: carp pituitary homogenate (CPH), Ovopel, Ovaprim and human chorionic gonadotropin (hCG) and results were analyzed by comparing response to the specimens of control groups. Spermiation outcomes and sperm motility of the captured and cultured ruffe were similar and with all hormonal treatments, there was a slightly greater sperm motility (55.6 %–57.1 %) in comparison to specimens of control groups (46.7 %–47.1 %). For captured specimens, there was no asynchronous development of oocytes, whereas in cultured specimens 32 % of females had asynchronous development of oocytes. The ovulation rate in specimens of all treated groups was 100 %, whereas specimens in the control groups did not reproductively mature and have ovulations. The latency time from time of hormonal treatments to initiation of reproductive functions depended on the spawning agent used and oocyte maturation stage and there was the shortest latency after using CPH and the longest with hCG treatment. The embryo survival and hatching rates varied with use of different hormonal preparations to induce reproduction: greatest hatching rates with hCG treatment (86.4 %–88.9 %), followed by Ovaprim (78.2 %–80.2 %) and least hatching rate with Ovopel and CPH treatments (66.0 %–67.1 % and 64.0 %–66.0 %, respectively).

尽管 ruffe ( Gymnocephalus cernua ) 在欧亚大陆广泛分布，但在某些地区（即北美），ruffe 被认为是入侵物种。没有关于该物种人工繁殖的报道。因此，进行了一项研究以评估从自然栖息地捕获并培养的标本的结果（F ₁代）样本进行比较。两种种群的产卵标本都用激素制剂处理：鲤鱼垂体匀浆 (CPH)、Ovopel、Ovaprim 和人绒毛膜促性腺激素 (hCG)，并通过比较对对照组标本的反应来分析结果。捕获和培养的 ruffe 的精子形成结果和精子活力相似，并且在所有激素处理下，与对照组标本 (46.7 %–47.1 %) 相比，精子活力略高 (55.6 %–57.1 %)。对于捕获的标本，没有卵母细胞的异步发育，而在培养标本中，32% 的雌性有卵母细胞的异步发育。所有治疗组标本的排卵率为100%，而对照组标本没有生殖成熟并有排卵。从激素治疗到生殖功能开始的潜伏期取决于所使用的产卵剂和卵母细胞成熟阶段，使用 CPH 后潜伏期最短，hCG 治疗潜伏期最长。胚胎存活率和孵化率因使用不同的激素制剂诱导繁殖而异：hCG 处理的孵化率最高 (86.4 %–88.9 %)，其次是 Ovaprim (78.2 %–80.2 %)，而 Ovopel 和 CPH 处理的孵化率最低（分别为 66.0 %–67.1 % 和 64.0 %–66.0 %）。