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Integrative taxonomy widens our knowledge of the diversity, distribution and biology of the genus Plakina (Homosclerophorida: Plakinidae)
Invertebrate Systematics ( IF 1.8 ) Pub Date : 2019-01-01 , DOI: 10.1071/is18027
Guilherme Muricy , Celso Domingos , Anaíra Lage , Emilio Lanna , Cristiane C. P. Hardoim , Marinella S. Laport , Carla Zilberberg

Despite the evolutionary significance of Homoscleromorpha, their diversity and biology are largely unknown. Here we integrate data of morphology, cytology, microbiology, ecology, reproduction, and mitochondrial cox-1 and cob gene sequences to resolve a complex of sympatric species of Plakina in South-eastern Brazil. All datasets congruently supported the delimitation of three species, two of which are new to science. Plakina coerulea has its distribution extended from one locality to over 2360 km wide. Plakina cabofriense, sp. nov. also occurs in North-eastern Brazil. Plakina cyanorosea, sp. nov. occurs only in a single, small tide pool and may be critically endangered. Plakina cyanorosea, sp. nov. produces conspicuous, abundant larvae useful for laboratory investigations. A thin, bright orange organic coat covers some spicules of P. cabofriense, sp. nov. and P. cyanorosea, sp. nov. The three Plakina species harbour diverse microbial symbiont communities, including previously unknown morphologies. Molecular phylogenies and barcoding gaps based on cox-1 and cob sequences supported that each species is monophyletic and distinct from other congeners. The genus Plakina is paraphyletic and strongly needs redefinition. The integrative approach provides new data that widens our knowledge of Homoscleromorpha diversity, distribution and biology.

中文翻译:

综合分类法拓宽了我们对 Plakina 属(Homosclerophorida: Plakinidae)的多样性、分布和生物学的了解

尽管 Homoscleromorpha 具有进化意义,但它们的多样性和生物学在很大程度上是未知的。在这里,我们整合了形态学、细胞学、微生物学、生态学、繁殖以及线粒体 cox-1 和 cob 基因序列的数据,以解析巴西东南部 Plakina 的同域物种复合体。所有数据集一致支持对三个物种的界定,其中两个物种是科学上的新物种。Plakina coerulea 的分布范围从一处扩展到 2360 多公里宽。Plakina cabofriense, sp. 十一月 也发生在巴西东北部。Plakina cyanorosea,sp。十一月 仅发生在单个小型潮池中,可能极度濒危。Plakina cyanorosea,sp。十一月 产生明显的、丰富的幼虫,可用于实验室研究。薄而亮的橙色有机被毛覆盖了 P. cabofriense 的一些针刺,sp. 十一月 和 P. cyanorosea, sp。十一月 这三个 Plakina 物种拥有不同的微生物共生群落,包括以前未知的形态。基于 cox-1 和 cob 序列的分子系统发育和条形码差距支持每个物种都是单系的并且与其他同类物不同。Plakina 属是并系的,强烈需要重新定义。综合方法提供了新数据,拓宽了我们对同形核生物多样性、分布和生物学的了解。Plakina 属是并系的,强烈需要重新定义。综合方法提供了新数据,拓宽了我们对同形核生物多样性、分布和生物学的了解。Plakina 属是并系的,强烈需要重新定义。综合方法提供了新数据,拓宽了我们对同形核生物多样性、分布和生物学的了解。
更新日期:2019-01-01
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