Temperature effects on asexual reproduction of the scyphozoan Aurelia aurita s.l.: differences between exotic (Baltic and Red seas) and native (Mediterranean Sea) populations
Temperature effects on asexual reproduction of the scyphozoan Aurelia aurita s.l.: differences between exotic (Baltic and Red seas) and native (Mediterranean Sea) populations
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DOI：
10.1111/maec.12196
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
M. Pascual;V. Fuentes;Antonio Canepa;D. Atienza;J. Gili;J. Purcell
中科院分区：
文献类型：
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作者：
M. Pascual;V. Fuentes;Antonio Canepa;D. Atienza;J. Gili;J. Purcell
水母的大量出现会对经济造成直接影响，特别是对旅游业和商业渔业。人类对水母物种的迁移已经在新的栖息地造成了破坏性的水华。奥雷利亚奥里塔公司已经在世界各地的许多地方推出。以测试Au的潜在成功。奥里塔公司在不同的栖息地，来自不同气候位置（地中海，红海和波罗的海）的scyphistomae在三种温度（14，21和28 °C）下单独培养201天，盐度，食物和光照相同。我们检验了原假设，即在种群[本地（地中海）和外来（红色和波罗的海）]之间的生存或无性生殖（出芽和雄裂）没有差异。三个scyphistoma种群的存活率在不同温度下没有显著差异;然而，红海组在所有温度下的存活率都低于其他种群。大多数个体在14 °C时发生横裂。红海scyphistomae strobilated更快，比波罗的海和地中海scyphistomae，并产生最少的ephyphistomae，而波罗的海scyphistomae产生最多。结果表明，Au.从波罗的海或红海引进到地中海西北部的aurita可能会在那里持续存在并成功地进行无性繁殖。一个新的入侵者甚至可能比当地的Au有更大的无性繁殖能力。奥里塔公司入侵种的建立可以增加后代的遗传变异，提高其对环境变化的适应能力。我们的研究结果表明，引入外来Au。奥里塔公司种群数量可能会增加地中海的水母繁殖。
Massive occurrences of jellyfish can cause direct impacts on the economy, especially on tourism and commercial fisheries. Translocation of jellyfish species by humans has caused damaging blooms in new habitats. Aurelia aurita s.l. has been introduced in many locations around the world. To test the potential success of Au. aurita s.l. in various habitats, scyphistomae from different climatic locations (Mediterranean, Red and Baltic Seas) were cultured individually for 201 days at three temperatures (14, 21 and 28 °C) with the same salinity, food and light. We tested the null hypotheses that there were no differences in survival or asexual reproduction (budding and strobilation) amongst populations [native (Mediterranean) and exotic (Red and Baltic)]. Survival of the three scyphistoma populations did not differ significantly across temperatures; however, the Red Sea group had lower survival at all temperatures than did the other populations. Most individuals strobilated at 14 °C. Red Sea scyphistomae strobilated more quickly than Baltic and Mediterranean Sea scyphistomae and produced the fewest ephyrae, whereas Baltic Sea scyphistomae produced the most. Our results indicate that Au. aurita from the Baltic or Red Seas introduced into the Northwest Mediterranean Sea would potentially persist and successfully asexually reproduce there. A new invader could even have greater asexual production than the local Au. aurita s.l. Establishment of the invaders could increase genetic variation of subsequent generations and increase their adaptability to environmental changes. Our results suggest that introduction of exotic Au. aurita s.l. populations could increase jellyfish blooms in the Mediterranean Sea.