Antitropical distributions and species delimitation in a group of ophiocomid brittle stars (Echinodermata: Ophiuroidea: Ophiocomidae)

Naughton, Kate; O'Hara, Timothy D.; Appleton, Belinda; Cisternas, Paula

doi:10.1016/j.ympev.2014.05.020

Cited by 26 publications

(25 citation statements)

References 82 publications

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“…III because only three sequences were available for the species. A mutation rate of 2.48% per nucleotide per million years was used for the COI, following other studies in echinoderms61. Between 50 million and one billion MCMC generations were run per species, sampled every 5,000 th –100,000 th step, and a burnin of 1,000–100,000 with the corresponding substitution model (GTR).…”

Section: Methodsmentioning

confidence: 99%

Contrasted phylogeographic patterns on mitochondrial DNA of shallow and deep brittle stars across the Atlantic-Mediterranean area

Taboada

Pérez‐Portela

2016

Sci Rep

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Previous studies on Ophiothrix in European waters demonstrated the existence of two distinct species, Ophiothrix fragilis and Ophiothrix sp. II. Using phylogenetic and species delimitation techniques based on two mitochondrial genes (cytochrome c oxidase I and 16S rRNA) we prove the existence of a new congeneric species (Ophiothrix sp. III), occurring in the deep Atlantic coast of the Iberian Peninsula and the Alboran Sea. We compared phylogeographic patterns of these three Ophiothrix species to test whether closely related species are differentially affected by past demographic events and current oceanographic barriers. We used 432 sequences (137 of O. fragilis, 215 of Ophiothrix sp. II, and 80 of Ophiothrix sp. III) of the 16S rRNA from 23 Atlantic-Mediterranean locations for the analyses. We observed different geographic and bathymetric distributions, and contrasted phylogeography among species. Ophiothrix fragilis appeared genetically isolated between the Atlantic and Mediterranean basins, attributed to past vicariance during Pleistocene glaciations and a secondary contact associated to demographic expansion. This contrasts with the panmixia observed in Ophiothrix sp. II across the Atlantic-Mediterranean area. Results were not conclusive for Ophiothrix sp. III due to the lack of a more complete sampling within the Mediterranean Sea.

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Section: Methodsmentioning

confidence: 99%

Contrasted phylogeographic patterns on mitochondrial DNA of shallow and deep brittle stars across the Atlantic-Mediterranean area

Taboada

Pérez‐Portela

2016

Sci Rep

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“…We allowed a GTR + G model on partitioned codon sites and a Yule process speciation prior. A lognormal prior was used for "clock rate" such that the median reflected the mutation rate per lineage per year (2.48×10 −8 ) as determined by Naughton et al (2014) and 95% distribution between 1.2 × 10 −8 and 8.7 × 10 −8 thus covering a broad range of uncertainty. Sixteen test runs of 10 8 generations were used to test and adjust priors and their effects on convergence, mixing and parameter estimates.…”

Section: Methodsmentioning

confidence: 99%

Against the flow: evidence of multiple recent invasions of warmer continental shelf waters by a Southern Ocean brittle star

et al. 2015

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The Southern Ocean is anomalously rich in benthos. This biodiversity is native, mostly endemic and perceived to be uniquely threatened from climate-and anthropogenically-mediated invasions. Major international scientific effort throughout the last decade has revealed more connectivity than expected between fauna north and south of the worlds strongest marine barrier-the Polar Front (the strongest jet of the Antarctic Circumpolar Current). To date though, no research has demonstrated any radiations of marine taxa out from the Southern Ocean, except at abyssal depths (where conditions differ much less). Our phylogeographic investigation including mitochondrial sequences of 135 specimens of one of the most ubiquitous and abundant clades at high southern latitudes, the ophiuroids (brittlestars), shows that one of them, Ophiura lymani, has gone against the flow. Remarkably our phylogenetic and coalescent analyses suggest that O. lymani has successfully invaded the South American shelf from Antarctica at least three times, in recent (Pleistocene) radiation. Many previous studies have demonstrated links within clades across the Polar Front this is the first in which northwards directional movement of a shelf-restricted species is the only convincing explanation. Rapid, recent, regional warming is likely to facilitate multiple range shift invasions into the Southern Ocean, whereas movement of cold adapted fauna (considered highly stenothermal) out of the Antarctic to warmer shelves has, until now, seemed highly unlikely.

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“…Most of the lineages that spread from north to south in shallow water did so on the American side, with the consequence that the Other important coastal arrivals from the north include otarioid pinnipeds with at least two colonizations by fur seals and sea lions (Churchill, Boessenecker, & Clementz, 2014;Valenzuela-Toro, Gutstein, Varas-Amalca, Suarez, & Pyenson, 2013;Yonegawa, Kohno, & Hasegawa, 2009), at least four cases among cancrid crabs (Schweitzer & Feldmann, 2000), the bryozoan Membranipora (Schwaninger, 2008), the kelp-associated amphipod Perampithoe (Conlan & Chess, 1992), the brittle star Ophiopteris (Naughton, O'Hara, Appleton, & Cisternas, 2014), the ranellid gastropods Argobuccinum (represented in the North Pacific by the extinct Mediargo) and Fusitriton (Beu, 2010), the lottiid limpet Lottia orbignyi (represented in the north by L. persona; see Espoz, Lindberg, Castilla, & Simoson, 2004), the grazing tegulid gastropod Chlorostoma (DeVries, 2007), and the muricid Brassilabrum (related to the extinct northern Califostoma; see Bean & Vermeij, 2016).…”

Section: Dispersal From North To Southmentioning

confidence: 99%

The coastal North Pacific: Origins and history of a dominant marine biota

Vermeij

Banker

Capece

et al. 2018

Journal of Biogeography

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Aims Some biogeographical regions act primarily as donors of colonists to other regions, while others act predominantly as recipient areas. How some biotas become dominant while others do not is a largely historical question that has received surprisingly little attention from biogeographers. Here, we seek to answer this question for the cold‐water North Pacific biota, which did not exist forty million years ago but which is now the principal donor biota outside the tropics. Location We focus on the cool‐temperate coastal North Pacific Ocean over the last 36.5 million years. Taxon We consider all multicellular taxa for which adequate fossil, phylogenetic and biogeographical data exist. Methods After placing North Pacific geographical events in the broader context of ocean gateways opening and closing elsewhere in the world, we discuss the history and factors affecting the planktonic and benthic productivity in the North Pacific based on a review and critical evaluation of the literature. A synthesis of primary sources was used to evaluate the origins and fates of North Pacific lineages, with special emphasis on movements to, within and from the North Pacific during the Cenozoic era. Results During the Late Eocene to earliest Miocene, the cooling North Pacific received colonists from adjacent warm‐water regions and the cold Southern Hemisphere, where temperate conditions had existed since at least the Cretaceous. From the Miocene onward, the North Pacific biota began to spread to the Southern Hemisphere and through Bering Strait to the Arctic and North Atlantic Oceans. Within the North Pacific, lineages during the early cooling phases spread predominantly from west to east, but in the Early Middle Miocene this pattern reversed, with later expansions going in both directions. An increase in productivity, powered by the evolution of highly productive seaweeds and by consumers with high metabolic rates, accompanied the transformation of the North Pacific from a recipient to donor biota. Main conclusions The North Pacific replaced the Southern Hemisphere temperate biota as the principal donor biota during the Miocene through a combination of increasing productivity, low magnitudes of extinction and intense competition and predation in an ocean basin with a long coastline.

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Antitropical distributions and species delimitation in a group of ophiocomid brittle stars (Echinodermata: Ophiuroidea: Ophiocomidae)

Cited by 26 publications

References 82 publications

Contrasted phylogeographic patterns on mitochondrial DNA of shallow and deep brittle stars across the Atlantic-Mediterranean area

Contrasted phylogeographic patterns on mitochondrial DNA of shallow and deep brittle stars across the Atlantic-Mediterranean area

Against the flow: evidence of multiple recent invasions of warmer continental shelf waters by a Southern Ocean brittle star

The coastal North Pacific: Origins and history of a dominant marine biota

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