Vertical trends in morphological variability of sea urchins of the genus Echinus from the Northeast Atlantic and Arctic

Minin, K. V.

doi:10.1134/s0031030112080096

Cited by 9 publications

(10 citation statements)

References 15 publications

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“…The specimen is no longer available for comparison. In our specimens, the presence of one or two teeth on the globiferous pedicellariae, their narrow base and their mesh-work are similar to those described in the literature (Mortensen 1903, Minin 2012. The tubercular pattern, the periproct, the shape of the ocular and genital plates and their disposition allowed us to classify these specimens as G. elegans.…”

Section: Distribution: North Atlantic (Obis) First Record In the Medsupporting

confidence: 60%

“…Depth range: 50-1710 m. (Mortensen 1943, Minin 2012. Only reported at 1500 m depth in the Mediterranean Sea (present study).…”

Section: Distribution: North Atlantic (Obis) First Record In the Medmentioning

confidence: 99%

“…Alvà (1987b) described another species, Gracilechinus alexandri, in the Mediterranean Sea. Both G. elegans and G. alexandri have many similar characteristics, making their true identification difficult (Mortensen 1903, Ramírez-Llodra and Tyler 2006, Minin 2012. Furthermore, juvenile G. alexandri have characteristics that might be confused with G. elegans.…”

Section: Distribution: North Atlantic (Obis) First Record In the Medmentioning

confidence: 99%

“…The nomenclature was checked against the World Register of Marine Species (WoRMS). The identification of the echinoid Gracilechinus elegans (Düben and Koren, 1844) was based on taxonomic descriptions from the Atlantic Ocean (Mortensen 1903, 1943, Koehler 1927, Minin 2012. This species has not been cited previously in the Mediterranean Sea.…”

Section: Specimen Identificationmentioning

confidence: 99%

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First records, rediscovery and compilation of deep-sea echinoderms in the middle and lower continental slope of the Mediterranean Sea

et al. 2014

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Summary:This study provides a compilation of all available information on deep-sea echinoderms from the middle and lower slopes of the Mediterranean Sea, with the aim of providing a unified source of information on the taxonomy of this group. Previous records of species are updated with new data obtained from 223 trawl hauls conducted in 11 cruises within the northwestern Mediterranean Sea between 800 m and 2845 m depth. Valid names, bathymetric ranges and geographic distributions are given for all species. The new data report, for the first time, the presence of the Atlantic echinoid Gracilechinus elegans (Düben and Koren, 1844) in the Mediterranean Sea. We also report the presence of the endemic holothurians Hedingia mediterranea (Bartolini Baldelli, 1914), dredged only once previously in 1914 in the Tyrrhenian Sea, and Penilpidia ludwigi (von Marenzeller, 1893), known previously only from three samples, two in the Aegean Sea and one in the Balearic Sea. Additionally, the deeper limits of the bathymetric distribution of four species have been expanded: the asteroid Ceramaster grenadensis (Perrier, 1881) to 2845 m; the echinoid Brissopsis lyrifera (Forbes, 1841) to 2250 m; and the holothurians Hedingia mediterranea and Holothuria (Panningothuria) forskali Delle Chiaje, 1823, to 1500 m and 850 m, respectively.Keywords: deep-sea echinoderms; Mediterranean Sea; Gracilechinus elegans; submarine canyons; taxonomy; bathymetric range. Primera cita, redescubrimiento y recopilación de los equinodermos de profundidad en el talud continental medio e inferior del MediterráneoResumen: Este estudio presenta una recopilación de toda la información disponible sobre los equinodermos de profundidad en el talud continental medio e inferior del mar Mediterráneo, con el fin de proporcionar una fuente de información unificada sobre la taxonomía de este grupo. Se han actualizado los registros anteriores mediante nuevos datos provenientes de 223 pescas de arrastre de 11 campañas oceanográficas realizadas en el noroeste Mediterráneo entre 800 y 2845 m de profundidad. Se ha actualizado el nombre de las especies, sus rangos batimétricos y sus distribuciones geográficas. Los nuevos datos presentan, por primera vez, la presencia del equinoideo Atlántico Gracilechinus elegans (Düben and Koren, 1844) en el mar Mediterráneo. También se cita la presencia en el noroeste Mediterráneo de dos especies de holoturias endémicas del Mediterráneo, Hedingia mediterranea (Bartolini Baldelli, 1914)

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Section: Distribution: North Atlantic (Obis) First Record In the Medsupporting

confidence: 60%

“…Depth range: 50-1710 m. (Mortensen 1943, Minin 2012. Only reported at 1500 m depth in the Mediterranean Sea (present study).…”

Section: Distribution: North Atlantic (Obis) First Record In the Medmentioning

confidence: 99%

Section: Distribution: North Atlantic (Obis) First Record In the Medmentioning

confidence: 99%

Section: Specimen Identificationmentioning

confidence: 99%

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First records, rediscovery and compilation of deep-sea echinoderms in the middle and lower continental slope of the Mediterranean Sea

et al. 2014

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“…The speciation of both genera presumably took place in the North Atlantic, initially at shallow depths, followed by colonization of the deep sea. This statement is confirmed by studies of embryonic pressure tolerance, distribution patterns and depth-related trends in morphology among species of both genera considered under the genus Echinus (Tyler et al, 1995;Tyler, Young, 1998;Minin, 2012).…”

Section: Distribution Patterns Of Tar-get Genera and Arctic Speciesmentioning

confidence: 70%

Morphological evidence of depth-related speciation in deep-sea Arctic echinoderms

Rogacheva

Миронов²,

Minin³

et al. 2013

Invertzool

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Three eurybathic cosmopolitan genera of echinoderms, the holothurians Elpidia, the stalked crinoids Bathycrinus and the echinoids Pourtalesia, are widely distributed in the deep Arctic Ocean. The genera Echinus and Gracilechinus occur in the Arctic only in the near-Atlantic sector of the basin. In all the five genera, there is a pronounced difference in morphology between specimens occurring at different depths. It is suggested that these differences reflect the depth-related speciation that took place following three scenarios. The genera Elpidia, Bathycrinus and Pourtalesia penetrated the Arctic Ocean at bathyal depths and subsequently dispersed down into abyssal and upwards into upper bathyal and sublittoral. The vertical dispersion of the genera Echinus and Gracilechinus went along one direction: from the sublittoral (0200 m) to the abyssal (>2000 m). In the genus Elpidia (the first scenario), new species appeared as a result of colonisation both upward and down from the bathyal. In the genera Bathycrinus and Pourtalesia (the second scenario) the radiation occurred as a result of colonization only down from the bathyal to the abyssal. In the genus Echinus and Gracilechinus (the third scenario), new species appeared along the colonization down, though not from the bathyal but from the sublittoral. Juvenile characters of shallow-water species of Echinus and Gracilechinus retain in adult deep-sea specimens. Morphological peculiarities of abyssal Bathycrinus and Pourtalesia can be related to trophic adaptations or decreasing of predators pressure in the abyssal.

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The effects of temperature and pressure acclimation on the temperature and pressure tolerance of the shallow-water shrimp Palaemonetes varians

et al. 2014

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Vertical trends in morphological variability of sea urchins of the genus Echinus from the Northeast Atlantic and Arctic

Cited by 9 publications

References 15 publications

First records, rediscovery and compilation of deep-sea echinoderms in the middle and lower continental slope of the Mediterranean Sea

First records, rediscovery and compilation of deep-sea echinoderms in the middle and lower continental slope of the Mediterranean Sea

Morphological evidence of depth-related speciation in deep-sea Arctic echinoderms

The effects of temperature and pressure acclimation on the temperature and pressure tolerance of the shallow-water shrimp Palaemonetes varians

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