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Exploring the effects of warming seas by using the optimal and pejus temperatures of the embryo of three Octopoda species in the Gulf of Mexico
Journal of Thermal Biology ( IF 2.9 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.jtherbio.2020.102753
Luis Enrique Ángeles-González 1 , Françoise D Lima 2 , Claudia Caamal-Monsreal 3 , Fernando Díaz 4 , Carlos Rosas 5
Affiliation  

Using data related to thermal optimal and pejus of the embryos of Octopus americanus from Brazil and O. insularis and O. maya from Mexico, this study aimed to project the potential distribution areas in the Gulf of Mexico and predict distribution shifts under different Representative Concentration Pathway scenarios (RCP 6 and 8.5) for the years 2050 and 2100. The different thermal tolerances elicited different responses to current and future scenarios. In this sense, O. insularis and O. maya thermal niches stretch from the Caribbean to Florida. Nevertheless, O. insularis may inhabit warmer areas than O. maya. Surprisingly, no area was considered thermally habitable for O. americanus, which could have been associated with the use of data of populations thermally adapted to temperate conditions south of Brazil. According to models, a warming scenario would cause a restriction of the available thermal niche of O. maya, while O. insularis could expand under RCP 6 scenarios. This restriction was more substantial in the RCP 8.5 scenario. Nevertheless, under the RCP 8.5 scenario, the temperature in 2100 may negatively affect even O. insularis, the species most thermal tolerant. If our results are accurate, the fishing yield of O. insularis will increase in the future, replacing the heavily exploited O. maya in the coasts of the southern Gulf of Mexico. Regarding O. americanus, no inference might be made until thermal tolerances of locally adapted populations can be studied.

中文翻译:

利用墨西哥湾三种八足类动物胚胎的最佳温度和 pejus 温度探索海洋变暖的影响

本研究利用巴西美洲章鱼和墨西哥的 O. insularis 和 O. maya 胚胎的热优化和 pejus 相关数据,旨在预测墨西哥湾的潜在分布区域并预测不同代表性浓度路径下的分布变化2050 年和 2100 年的情景(RCP 6 和 8.5)。不同的热容差引发了对当前和未来情景的不同反应。从这个意义上说,O. insularis 和 O. maya 热生态位从加勒比地区一直延伸到佛罗里达州。尽管如此,O. insularis 可能比 O. maya 栖息在更温暖的地区。令人惊讶的是,没有任何区域被认为是美洲美洲狮的热宜居区域,这可能与使用热适应巴西南部温带条件的种群数据有关。根据车型,变暖情景会限制 O. maya 的可用热生态位,而 O. insularis 可能会在 RCP 6 情景下扩张。在 RCP 8.5 方案中,这种限制更为严重。尽管如此,在 RCP 8.5 情景下,2100 年的温度甚至可​​能对最耐热的物种 O. insularis 产生负面影响。如果我们的结果准确,未来 O. insularis 的捕捞量将会增加,取代墨西哥湾南部沿海严重开发的 O. maya。关于美洲美洲狮,在研究当地适应种群的热耐受性之前,无法做出任何推断。在 RCP 8.5 情景下,2100 年的温度甚至可​​能对最耐热的物种 O. insularis 产生负面影响。如果我们的结果准确,未来 O. insularis 的捕捞量将会增加,取代墨西哥湾南部沿海严重开发的 O. maya。关于美洲美洲狮,在研究当地适应种群的热耐受性之前,无法做出任何推断。在 RCP 8.5 情景下,2100 年的温度甚至可​​能对最耐热的物种 O. insularis 产生负面影响。如果我们的结果准确,未来 O. insularis 的捕捞量将会增加,取代墨西哥湾南部沿海严重开发的 O. maya。关于美洲美洲狮,在研究当地适应种群的热耐受性之前,无法做出任何推断。
更新日期:2020-12-01
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