Brazilian Northeast coast Prosorhochmus belizeanus (Hoplonemertea: Nemertea) populations analyses reveal colonization by founder effect

IF 1.5 4区环境科学与生态学 Q3 BIODIVERSITY CONSERVATION

Marine Biodiversity Pub Date : 2024-06-21 DOI:10.1007/s12526-024-01449-1

Dione O. Jordan, Cecili B. Mendes, Sónia C. S. Andrade

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引用次数: 0

Abstract

Prosorhochmidae, known as smiling worms, are hoplonemerteans of great interest to nemertologists, since some species display viviparity and hermaphroditism, both rare traits in this phylum, and can be found in terrestrial and marine environments. Prosorhochmus is a predominantly marine genus and was never recorded on the Brazilian coast. The present study documents the first record of the oviparous Prosorhochmus belizeanus, along with population genetic diversity analyses. Here, we sequenced cytochrome c oxidase subunit 1 (COI) and 16S ribosomal RNA (16SrRNA) regions from individuals of three localities along the Brazilian Northeast coast. From these analyses, we found moderate genetic diversity, no genetic structuring, and no clear geographical pattern. In addition, migration analysis evidenced some influence of the Brazilian Current in the species’ dispersion. Those findings indicate colonization by a small number of mtDNA lineages followed by population stability and shed light into the importance of deepening the knowledge about those organisms to elucidate genetic and dispersion patterns of oviparous invertebrates of rocky shores.

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巴西东北海岸 Prosorhochmus belizeanus（Hoplemertea：Nemertea）种群分析揭示了创始者效应带来的定殖效应

微笑蠕虫（Prosorhochmidae）是蠕虫学家非常感兴趣的一种蠕形动物，因为有些物种具有胎生和雌雄同体的特征，这在蠕虫门中都是罕见的，而且可以在陆地和海洋环境中发现。Prosorhochmus 主要属于海洋生物，在巴西海岸从未有过记录。本研究首次记录了卵生的 Prosorhochmus belizeanus，并进行了种群遗传多样性分析。在这里，我们对巴西东北海岸三个地点的个体的细胞色素 c 氧化酶亚单位 1（COI）和 16S 核糖体 RNA（16SrRNA）区域进行了测序。通过这些分析，我们发现了中等程度的遗传多样性，没有遗传结构，也没有明显的地理模式。此外，迁移分析表明，巴西洋流对该物种的扩散有一定影响。这些研究结果表明，少数mtDNA品系在种群稳定后进行了定殖，并阐明了加深对这些生物的了解以阐明岩岸卵生无脊椎动物的遗传和扩散模式的重要性。

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来源期刊

Marine Biodiversity BIODIVERSITY CONSERVATION-MARINE & FRESHWATER BIOLOGY

CiteScore

3.30

自引率

6.20%

发文量

期刊介绍： Marine Biodiversity is a peer-reviewed international journal devoted to all aspects of biodiversity research on marine ecosystems. The journal is a relaunch of the well-known Senckenbergiana maritima" and covers research at gene, species and ecosystem level that focuses on describing the actors (genes and species), the patterns (gradients and distributions) and understanding of the processes responsible for the regulation and maintenance of diversity in marine systems. Also included are the study of species interactions (symbioses, parasitism, etc.) and the role of species in structuring marine ecosystem functioning. Marine Biodiversity offers articles in the category original paper, short note, Oceanarium and review article. It forms a platform for marine biodiversity researchers from all over the world for the exchange of new information and discussions on concepts and exciting discoveries. - Covers research in all aspects of biodiversity in marine ecosystems - Describes the actors, the patterns and the processes responsible for diversity - Offers peer-reviewed original papers, short communications, review articles and news (Oceanarium) - No page charges