Population differentiation supports multiple human-mediated introductions of the transatlantic exotic sponge Paraleucill
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PRIMARY RESEARCH PAPER
Population differentiation supports multiple humanmediated introductions of the transatlantic exotic sponge Paraleucilla magna (Porifera, Calcarea) Fernanda F. Cavalcanti . Andre´ Padua . Hayde´e Cunha . Mirna Halasz . Vedran Nikolic´ . Silvia Barreto . Michelle Klautau
Received: 25 February 2020 / Revised: 22 July 2020 / Accepted: 25 July 2020 Ó Springer Nature Switzerland AG 2020
Abstract Paraleucilla magna was the first sponge recognised as alien in the Atlantic. It was first registered in Rio de Janeiro (Brazil) and soon became very abundant in the southeastern and southern coasts of Brazil and also in the Mediterranean. Its origin is still unknown but recurrent introductions seem to have occurred in the Mediterranean. In this study, we used genetic markers (microsatellites) to test if Brazilian and Adriatic populations share a single source or if multiple introductions occurred in both regions. We Handling editor: Diego Fontaneto
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10750-020-04368-x) contains supplementary material, which is available to authorized users.
also compared the genetic composition of populations established almost 30 years ago (Brazil) with a recently founded population (Adriatic—less than 10 years). Populations of P. magna were sampled in four localities across 900 km in the Southwestern Atlantic (Brazilian coast) and in one locality in the Adriatic (Croatian coast). Our results suggest the presence of five genetically distinct populations possibly originated by multiple human-mediated introductions from different sources and show that the putative most recently established population is genetically more diverse. Keywords Marine invasion Brazilian coast Croatian coast Calcareous sponge Adriatic Sea Bioinvasion
F. F. Cavalcanti S. Barreto Instituto de Biologia, Universidade Federal da Bahia, Rua Bara˜o de Jeremoabo s/n, Campus Ondina, Salvador, BA CEP 40170-115, Brazil
M. Halasz Laboratory for Molecular Genetics, Division of Molecular Biology, Rud¯er Bosˇkovic´ Institute, Bijenicˇka cesta 54, 10000 Zagreb, Croatia
A. Padua Departamento de Biologia Animal, Instituto de Cieˆncias Biolo´gicas e da Sau´de, Universidade Federal Rural do Rio de Janeiro, BR 465 km 7, Serope´dica, RJ CEP 23897-000, Brazil
V. Nikolic´ Laboratory for Benthos, Institute of Oceanography and Fisheries, P.O. Box 500, 21000 Split, Croatia
H. Cunha Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Rua Sa˜o Francisco Xavier 524/sala 4002_E, Rio de Janeiro, RJ CEP 20550-013, Brazil
M. Klautau (&) Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco A, sala A0-100, Rio de Janeiro, RJ CEP 21941-902, Brazil e-mail: [email protected]
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Hydrobiologia
Introduction Bioinvasion is considered one of the main threats to marine ecosystems around the globe. It consists of the human-media
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