Syllidae (Annelida) from the Boreal and sub-Arctic seas off Norway (North Sea, Norwegian Sea, Barents Sea)

Lucas, Yolanda; Sikorski, Andrey; Martín, Guillermo San

doi:10.1017/s002531541600182x

Cited by 3 publications

(4 citation statements)

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“…Amblyosyllis finmarchica was considered to be a nomen dubium [132], but it was later [36, 133] recognised as valid based on material from Iceland and Norway, respectively. The present work confirms the validity of the species.…”

Section: Resultsmentioning

confidence: 99%

Species delimitation in Amblyosyllis (Annelida, Syllidae)

et al. 2019

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Amblyosyllis is a worldwide distributed group of annelids mainly found in coastal environments. It is well known among the polychaete specialists mostly because of its notable beauty, showing bright colourful patterns and outstanding long and coiled appendices. Amblyosyllis is a monophyletic genus easy to identify due to its distinct diagnostic features; however, the species and their boundaries are, in most cases, not well defined. Herein, we provide an extensive sample of Amblyosyllis material (115 specimens) from several world geographic areas. We have studied the morphological features of each specimen and photographed them alive. Two mitochondrial DNA markers (COI and 16S) and one nuclear gene fragment (28S, D1 region) were sequenced. We performed phylogenetic analyses based on each DNA partition, as well as the combined data sets, obtaining congruent results. Species delimitation methods such as distance analyses, statistical parsimony networks and multi-rate Poisson tree processes were also applied. The combined results obtained from different methodologies and data sets are used to differentiate between, at least, 19 lineages compatible with the separately evolving meta-populations species concept. Four of these lineages are identified as nominal species, including the type species of Amblyosyllis , A . rhombeata . For three other lineages previously synonymized names are recovered, and seven lineages are described as new species. All of these species are described and supported by appropriate iconography. We recognize several morphological characters useful to identify species of Amblyosyllis , which in some cases should also be combined with molecular methods for species delineation. The genetic divergence in the genus is high, contrary to the morphological homogeneity observed. Two species show a wide geographical distribution, while the rest have a more restricted distribution. There are several examples of species with overlapping distribution patterns.

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Section: Resultsmentioning

confidence: 99%

Species delimitation in Amblyosyllis (Annelida, Syllidae)

et al. 2019

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“…can be easily distinguished from the remaining Mediterranean Erinaceusyllis based on their compound chaetae: Erinaceusyllis belizensis (Russell, 1989) and Erinaceusyllis cryptica (Ben-Eliahu, 1977) have bidentate blades (San Martín 2003), while Erinaceusyllis erinaceus (Claparède, 1863) has unidentate, distinctly shorter blades, with a less pronounced dorso-ventral gradation (Verdes et al 2013). Moreover, contrary to the new species, the species of Erinaceusyllis typically occur in shallow water environments (San Martín 2005;Ramos et al 2010;Lucas et al 2017), even if some abyssal species originally assigned to the genus Sphaerosyllis Claparède, 1863, as Sphaerosyllis ridgensis Blake & Hilbig, 1990, and Sphaerosyllis ruthae San Martín, 2004 could actually belong to Erinaceusyllis (G. San Martín, pers. comm.).…”

Section: Systematicsmentioning

confidence: 90%

“…On the other hand, Exogone longicirris Webster & Benedict, 1887 has been recently assigned to Parexogone, and closely resembles P. wolfi. The main differences are only a slightly lower number of proventricular cell rows (11-14 vs 15-21) and a less pronounced spinulation along the blade edge (Eliason 1962;Lucas et al 2017). The spinulation of compound chaetae, however, shows geographical variability, as the Brazilian specimens examined by Barroso et al (2017) show less pronounced spines than those reported in the original description (San Martín 1991), thus appearing closer to P. longicirris.…”

Section: Systematicsmentioning

confidence: 94%

Syllidae (Annelida: Phyllodocida) from the deep Mediterranean Sea, with the description of three new species

Langeneck

Musco

Busoni

et al. 2018

Zootaxa

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Despite almost two centuries of research, the diversity of Mediterranean deep-sea environments remain still largely unexplored. This is particularly true for the polychaete family Syllidae. We report herein 14 species; among them, we describe Erinaceusyllis barbarae n. sp., Exogone sophiae n. sp. and Prosphaerosyllis danovaroi n. sp. and report Parexogone wolfi San Martín, 1991, Exogone lopezi San Martín, Ceberio Aguirrezabalaga, 1996 and Anguillosyllis Day, 1963 for the first time from the Western Mediterranean, the latter based on a single individual likely belonging to an undescribed species. Moreover, we re-establish Syllis profunda Cognetti, 1955 based on type and new material. Present data, along with a critical analysis of available literature, show that Syllidae are highly diverse in deep Mediterranean environments, even though they are rarely reported, probably due to the scarce number of studies devoted to the size-fraction of benthos including deep-sea syllids. Most deep-sea Syllidae have wide distributions, which do not include shallow-waters. 100 m depth apparently represents the boundary between the assemblages dominated by generalist shallow water syllids like Exogone naidina Ørsted, 1843 and Syllis parapari San Martín López, 2000, and those deep-water assemblages characterised by strictly deep-water species like Parexogone campoyi San Martín, Ceberio Aguirrezabalaga, 1996, Parexogone wolfi San Martín, 1991 and Syllis sp. 1 (= Langerhansia caeca Katzmann, 1973).

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“…It is a journal with an established reputation, international reach and a broad scope across the marine realm. In this issue there are papers from around the world, from the Barents Sea (Lucas et al ., 2018) to the southern Philippine Sea (Yu & Xu, 2018). They detail basic research on marine organisms from the microscopic Chatonella spp.…”

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confidence: 99%

Editorial

Lewis¹

2018

J. Mar. Biol. Ass.

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The world ocean covers more than two-thirds of the planet and provides a huge resource to humankind. The Woods Hole Oceanographic Institute website (http://www.whoi.edu/) carries some fascinating global marine information including the observation that 44% of the world's population lives within 150 km of the ocean. In Europe 43% of the population live within 'coastal regions' and the coastal strip is noted as a primary tourist destination. The benefits of this on human health and well-being are beginning to be realized (White et al., 2016). However, with an increasing global population we live in an era where anthropogenic pressures, particularly on the coastal strip, are increasing. Halpern et al. (2015) noted that in the previous five years, cumulative impacts of 12 anthropogenic stressors had affected some 66% of the ocean. This year, in the UK, we have seen a marked increase in public awareness of man's impact on the ocean thanks to high profile television programming and popular public campaigns regarding plastic pollution. Public concern and appreciation for the marine environment is certainly at a high point.However, to improve our management of the oceans we need to understand the nature and complexity of its various ecosystems and the organisms that inhabit them. Marine scientists need to provide good evidence to underpin policymaking and hence social change. The Journal of the Marine Biological Association of the United Kingdom has a long history of publishing material relevant to these debates. It is a journal with an established reputation, international reach and a broad scope across the marine realm. In this issue there are papers from around the world, from the Barents Sea (Lucas et al., 2018) to the southern Philippine Sea (Yu & Xu, 2018). They detail basic research on marine organisms from the microscopic Chatonella spp. in Japanese inlets (Yamaguchi et al., 2018) to megafauna in the shape of sharks in the Ecuadorian Pacific (Estupiñán-Montaño et al., 2018). There are papers highlighting how organisms engineer their environments (Perry et al., 2018;Pocklington et al., 2018).Attention is given to management of environments. In their review, David & Loveday (2018) define and highlight the potential importance of cryptic dispersal in determination of marine connectivity and hence the design of Marine Protected Areas. The effects of anthropogenic activities in a subtropical bay in China are explored by Du et al. (2018). Insights are provided by a local fishing community into the small cetacean Pontopora blainvillei in southern Brazil and demonstrate the potential of combining traditional and scientific knowledge for species conservation (Zappes et al., 2018). Whilst practical methods for improving the survival of an endemic shallow water coral through transplantation are investigated by Terrón-Sigler et al. (2018).As the incoming Editor in Chief I welcome the diversity of the contributions we receive at the Journal and look forward to receiving and working with authors on similarly diverse manuscript...

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Syllidae (Annelida) from the Boreal and sub-Arctic seas off Norway (North Sea, Norwegian Sea, Barents Sea)

Cited by 3 publications

References 35 publications

Species delimitation in Amblyosyllis (Annelida, Syllidae)

Species delimitation in Amblyosyllis (Annelida, Syllidae)

Syllidae (Annelida: Phyllodocida) from the deep Mediterranean Sea, with the description of three new species

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