Universität zu Köln

Schiffer, Philipp H. and Herbig, Hans-Georg ORCID: 0000-0002-8878-8378 (2016). Endorsing Darwin: global biogeography of the epipelagic goose barnacles Lepasspp. (Cirripedia, Lepadomorpha) proves cryptic speciation. Zool. J. Linn. Soc., 177 (3). S. 507 - 526. OXFORD: OXFORD UNIV PRESS. ISSN 1096-3642

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Abstract

It was Darwin that noted the large intraspecific diversity of the goose barnacle Lepas Linnaeus, 1758 and thought about distinct regional varieties. Today, biogeographic compartmentation is known from marine species, but data from globally occurring species remain scarce. We analysed inter- and intraspecific divergence within the epipelagic rafter Lepas from tropical and temperate oceans by means of two mitochondrial and one nuclear DNA marker. Besides phylogenetic relations, we resolved biogeography and controlling factors. Inhabiting the Southern Hemisphere, Lepas australis Darwin, 1851 shows separate populations from coastal Chile and from circum-Antarctic waters, most probably related to temperature differences in the current systems. The cosmopolitan Lepas anatifera Linnaeus, 1758 displays four regional subgroups (coastal Chile, Northeast Pacific/Oregon, the Southern Hemisphere Indopacific, and the Atlantic), and a global group, which might be an ancestral stem group. The differentiation reflects vicariance effects rooted in geological history: the closure of the Neogene Tethys in the Middle East and at the Panama Isthmus, the installation of the cool Benguela Current, differing Pleistocene currents and temperatures, and modern current systems. The extreme ecological generalists Lepas anserifera Linnaeus, 1767 and Lepas pectinata Spengler, 1793 are not differentiated, and might represent true global species. In conclusion, compartmentation of the oceans acts at the species level according to ecospace limits. For Lepas, the multitude of barriers favours allopatric speciation.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schiffer, Philipp H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Herbig, Hans-Georg UNSPECIFIED orcid.org/0000-0002-8878-8378 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-271160
DOI:	10.1111/zoj.12373
Journal or Publication Title:	Zool. J. Linn. Soc.
Volume:	177
Number:	3
Page Range:	S. 507 - 526
Date:	2016
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1096-3642
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEA-SURFACE TEMPERATURE; GENETIC DIVERSITY; WEST PACIFIC; PHYLOGEOGRAPHY; OCEAN; DNA; COSMOPOLITAN; DISPERSAL; EVOLUTION; POPULATIONS Multiple languages Zoology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27116