Laboratorio de Ecofisiología de Organismos Acuáticos, Departamento de Biotecnología Marina Centro de Investigación Científica y de Educación Superior de Ensenada, (CICESE), Carretera Ensenada-Tijuana #3918, Ensenada, 22860, Ensenada, Baja California, Mexico.
Laboratorio de Ecofisiología de Organismos Acuáticos, Departamento de Biotecnología Marina Centro de Investigación Científica y de Educación Superior de Ensenada, (CICESE), Carretera Ensenada-Tijuana #3918, Ensenada, 22860, Ensenada, Baja California, Mexico.
J Therm Biol. 2023 May;114:103495. doi: 10.1016/j.jtherbio.2023.103495. Epub 2023 Mar 11.
Ocean warming is expected to occur due to anthropogenic climate change bringing a spatial shift of marine communities. Experimental data that characterize the aerobic power budget via an aerobic scope, thermal metabolic scope, or thermal preferences have been proposed as tools that can describe species distribution since they characterize species fitness or performance under different temperatures. This study tested the potential relationship between observed occurrences and different physiological studies in the Americas for 11 commercially important species in Mexico. Projections were also developed for Mexico's exclusive economic zone under different climate warming scenarios. The physiological data were fitted from optimum up to pejus temperatures and projected to sea surface temperatures for present (2003-2014) and Representative Concentration Pathway (RCP) scenarios (RCP 2.6, RCP 4.5, RCP 6.0, and RCP 8.5) for the period 2040-2050 and 2090-2100. For species with wide distributions in the Americas, the number of occurrences reported decreases at higher latitudes related to the decrease in species performance calculated from laboratory experiments. In addition, higher species occurrences are usually reported around optimum temperatures. Overall, the results suggest that pejus temperatures likely restrict latitudinal distribution, at least for widely distributed taxons. Regarding Mexican projections, the results varied widely by species. For example, in the Atlantic Ocean, Octopus maya and Panulirus argus are vulnerable to warming scenarios, while Centropomus undecimalis is not. Interestingly, northern Campeche Bank, the Gulf of California, and Western Baja California may act as thermal refugia for marine species indicating they could be assigned as protected areas to support fisheries throughout the Mexican exclusive economic zone. This research adds to the increasing evidence of the relationship between thermal niche and wild population distribution.
海洋变暖预计将因人为气候变化而发生，这将导致海洋生物群落的空间转移。通过有氧范围、热代谢范围或热偏好来描述有氧能力预算的实验数据已被提议作为描述物种分布的工具，因为它们可以描述在不同温度下的物种适应性或表现。本研究测试了在墨西哥的 11 种商业重要物种的美洲观察到的发生事件与不同生理研究之间的潜在关系。还为墨西哥专属经济区在不同气候变暖情景下进行了预测。生理数据从最佳温度拟合到最适温度以下，并投射到当前（2003-2014 年）和代表性浓度路径（RCP）情景（RCP 2.6、RCP 4.5、RCP 6.0 和 RCP 8.5）的海表温度，用于 2040-2050 年和 2090-2100 年。对于在美洲广泛分布的物种，随着从实验室实验中计算出的物种性能下降，报告的发生次数在较高纬度地区减少。此外，较高的物种发生通常在最佳温度附近报告。总的来说，结果表明，最适温度以下的温度可能限制了纬度分布，至少对于广泛分布的分类群是如此。关于墨西哥的预测，结果因物种而异。例如，在大西洋，章鱼（Octopus maya）和罗氏沼虾（Panulirus argus）易受变暖情景的影响，而短尾真鲷（Centropomus undecimalis）则不易受影响。有趣的是，北坎佩切滩（Campeche Bank）、加利福尼亚湾（Gulf of California）和下加利福尼亚西部（Western Baja California）可能是海洋物种的热避难所，这表明它们可以被指定为保护区，以支持整个墨西哥专属经济区的渔业。这项研究增加了热生态位与野生种群分布之间关系的证据。
