Habitat Partitioning in Two Intertidal Limpets, Siphonaria guamensis (Heterobranchia) and Patelloida saccharina (Patellogastropoda), from Southern Thailand.

IF 1.5 3区 生物学 Q2 ZOOLOGY
Zoological Studies Pub Date : 2024-05-14 eCollection Date: 2024-01-01 DOI:10.6620/ZS.2024.63-11
Suphatsara Sangphueak, Tin Yan Hui, Sarah L Y Lau, Gray A Williams, Kringpaka Wangkulangkul
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引用次数: 0

Abstract

Mobile intertidal animals exhibit various strategies during emersion to mediate the impact of heat and desiccation, including behavioural adaptations such as moving to lower tidal levels and seeking thermal refuges, which can result in spatial partitioning between species within the intertidal environment. We tested whether the limpets Siphonaria guamensis (Heterobranchia) and Patelloida saccharina (Patellogastropoda) exhibited differential habitat use during tidal emersion by quantifying their abundance and size distribution in various habitats on two rocky shores on the west coast of Thailand. S. guamensis inhabited higher shore levels with hotter average rock temperatures when emersed as compared to P. saccharina. On one of the shores, large S. guamensis lived at higher tidal levels than smaller individuals, whereas large P. saccharina showed the reverse pattern, being found lower on the shore than smaller individuals. The abundance of S. guamensis was positively correlated to the shore slope, with more individuals found on vertical than horizontal rocks, while P. saccharina showed a negative relationship between abundance and algal cover. At the heights where they were most abundant, both species were more often found in bare rock habitats as opposed to crevices and areas dominated by oyster shells, despite the fact that bare rock was as hot as or even hotter than other microhabitats. The exact resting locations of the two species were, however, cooler than the mean temperature of the bare rock. In general, limpets did not exhibit a strong preference for any particular rock orientation, but S. guamensis on one shore was more abundant on east-facing rocks as compared to other aspects. As a result, although thermal stress appears to be a driver for habitat partitioning between species (occupying different tidal heights), temperature alone is unable to explain distribution patterns within species, as limpets were not adopting thermal refuges during tidal emersion. Variations in the physical environments may be mediated by species-specific morphological and/or physiological adaptations which determine the distribution of different limpet species on western Thailand rocky shores.

泰国南部两种潮间带帽贝的生境划分:异鳃冠贝(Siphonaria guamensis)和双足帽贝(Patelloida saccharina)。
潮间带流动动物在回归过程中表现出各种策略来调节热量和干燥的影响,包括行为适应,如向低潮位移动和寻找热避难所,这可能导致潮间带环境中物种之间的空间划分。本文通过对泰国西海岸两个岩石海岸不同生境中冠贝(Siphonaria guamensis)和帽贝(Patelloida saccharina, Patellogastropoda)的数量和大小分布进行量化,验证了潮退期间冠贝(Siphonaria guamensis)和帽贝(Patelloida saccharina)是否表现出不同的生境利用。与saccharina相比,s.g amensis在出现时居住在更高的海岸水平,平均岩石温度更高。在其中一个海岸,大型的关岛S. ensis比较小的个体生活在更高的潮位,而大型的糖精P. saccharina则表现出相反的模式,比较小的个体在更低的潮位。关岛藻的丰度与岸坡呈显著正相关,垂直岩石的丰度高于水平岩石,而糖化藻的丰度与藻类覆盖呈显著负相关。在它们最丰富的高度,这两个物种更多地出现在裸露的岩石栖息地,而不是裂缝和牡蛎壳主导的地区,尽管裸露的岩石和其他微栖息地一样热,甚至更热。然而,这两个物种的确切栖息地点比裸露岩石的平均温度要低。总的来说,帽贝对任何特定的岩石方向没有表现出强烈的偏好,但与其他方面相比,一个海岸的S. guamensis在东向岩石上更为丰富。因此,尽管热应力似乎是物种之间栖息地划分的驱动因素(占据不同的潮汐高度),但温度本身无法解释物种内部的分布模式,因为帽贝在潮汐恢复期间没有采用热避难所。自然环境的变化可能是由物种特有的形态和/或生理适应介导的,这决定了泰国西部岩石海岸不同帽贝物种的分布。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Zoological Studies
Zoological Studies 生物-动物学
CiteScore
2.80
自引率
6.20%
发文量
35
审稿时长
6-12 weeks
期刊介绍: Zoological Studies publishes original research papers in five major fields: Animal Behavior, Comparative Physiology, Evolution, Ecology, and Systematics and Biogeography. Manuscripts are welcome from around the world and must be written in English. When the manuscript concerns the use of animals or specimens in research, a statement must be included to the effect that the author(s) has adhered to the legal requirements of the country in which the work was carried out or to any institutional guidelines.
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