Phymatolithon (Melobesioideae, Hapalidiales) in the Boreal–Subarctic Transition Zone of the North Atlantic
Phymatolithon (Melobesioideae, Hapalidiales) in the Boreal–Subarctic Transition Zone of the North Atlantic
复制标题
北大西洋寒带-亚北极过渡带的Phymatolithon（Melobesioideae，Hapalidiales）
DOI：
10.5479/si.1943-667x.41
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发表时间：
2018
影响因子：
3.7
通讯作者：
L. Hayek
中科院分区：
文献类型：
--
作者：
W. Adey;Jazmín J. Hernández;P. Gabrielson;Merinda C Nash;L. Hayek
藻石属珊瑚藻的种类是北方—亚北极过渡带的岩石潮间带和浅光浅海带的主要钙化藻类，从缅因湾和加拿大南部海域延伸到北大西洋的冰岛西南部和挪威外海岸。在本文中，我们利用广泛的野外和实验室数据，在统计分析和DNA序列数据的支持下，对该地区生态系统的这一关键属进行了多尺度的研究。我们证明了北大西洋北方—亚北极过渡带的藻石物种可以通过对其形态解剖特征的统计/发育分析进行系统的分离。我们显示这些结果与基于DNA序列的方法是一致的。根据石蜡切片、复合显微镜和EDS-SEM分析，我们发现珊瑚的解剖结构包括组织类型和高碳酸镁壁结构的多样性，包括：Phymatolithon laevigatum、P. rugulosum （P. lamii）、P. squamulosum （P. lenormandii）、P. investiens、P. borealis sp. 11 . （P. polymorphum）和P. nantuckensis sp. 11。营养组织形态的变化，特别是在细胞分裂和伸长模式方面的变化，以及概念（生殖结构）位置和发育的变化，是遗传和环境因素综合作用的结果。其中一些因素与适应环境和生物地理生态位有关，为适应机制的实验分析提供了基础。我们分析了Phymatolithon的概念发育，并证明了遗传控制与同步营养生长之间的联系；这些参数相互作用，产生相当大的变化在某些性状最终大体形态，而不是在其他。这些结果强烈表明，如果要成功地将其与DNA序列数据相关联，那么在更广泛的珊瑚科中进行形态解剖研究需要更大的生物学复杂性，并利用定量种群水平的数据。《史密森尼海洋科学贡献》，第41期，8 + 90页，21幅图，11张图，5张表，1个附录，2018年。
Species of the coralline algal genus Phymatolithon are the dominant algal calcifiers in the rocky intertidal and shallow photic sublittoral zone of the Boreal–Subarctic transition zone that stretches across the North Atlantic from the Gulf of Maine and the southern Canadian Maritimes to southwestern Iceland and the Norwegian outer coast. In this paper, we use extensive field and laboratory data on the biology, physiology, and ecology of Phymatolithon species, supported by statistical analysis and DNA sequence data, to develop a multiscale view of this key genus of the ecosystems of this region. We demonstrate that species of Phymatolithon that occur in the Boreal–Subarctic transition zone in the North Atlantic can be segregated systematically by a statistical/developmental analysis of their morpho-anatomical characters. We show these results to be congruent with DNA sequence-based methods. Six species are recognized: Phymatolithon laevigatum , P. rugulosum ( P. lamii ), P. squamulosum ( P. lenormandii ), P. investiens , P. borealis sp. nov. ( P. polymorphum ), and P. nantuckensis sp. nov. Based on paraffin section, compound microscope, and EDS-SEM analysis, we show that coralline anatomy comprises a diversity of both tissue types and high magnesium carbonate wall structure. Variations in vegetative tissue morphology, particularly with respect to cell division and elongation patterns, as well as variation in conceptacle (reproductive structure) location and development, are the result of a complex of genetic and environmental factors. Some of these factors can be linked to adaptation to environmental and biogeographical niches, providing a basis for experimental analysis of the mechanisms of adaptation. We have analyzed conceptacle development in Phymatolithon and demonstrated the linkage between genetic control and concurrent vegetative growth; these parameters interact to produce considerable variation in some characters of final gross morphology but not in others. These results strongly demonstrate that morpho-anatomical research in the broader Corallinophycideae requires greater biological sophistication, with utilization of quantitative population-level data, if success in correlating it with DNA sequence data is to be generally achieved. Smithsonian Contributions to the Marine Sciences , number 41 , viii + 90 pages, 21 figures, 11 plates, 5 tables, 1 appendix, 2018.
影响因子：
10.7
作者：
Tamura, Koichiro;Peterson, Daniel;Kumar, Sudhir
通讯作者：
Kumar, Sudhir
影响因子：
1.6
作者：
Silvestro, Daniele;Michalak, Ingo
通讯作者：
Michalak, Ingo