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Table 1 List of investigated annelid species, including collection sites, ecological background information from sampling localities and literature as well as number of investigated specimens.

From: Comparative neuroanatomy suggests repeated reduction of neuroarchitectural complexity in Annelida

Species

Habitat, depth, sampling locality

Biology

(from Fauchald and Jumars[62])

Investigated

specimens

Aphrodita aculeata

LINNAEUS, 1761

Underneath rocks, 5 m, Cala Olivera, Ibiza (2006, 2007)

Slow-moving carnivore, epibenthic

5

Arenicola marina

(LINNAEUS, 1758)

Infaunal, on tidal flats, Königshafen, Sylt (2008)

Detritus feeder, burrowing

3

Branchiomma bombyx

(DALYELL, 1853)

On algae-incrusted rocks, 2-10 m, Cala Llenya, Cala Olivera, Ibiza (2007)

Suspension feeder, tube-dwelling

2

Eunice torquata

QUATREFAGES, 1865

In crevices and adjacent detritus, 1-15 m, Cala Llenya, Cala

Olivera, Cala Vedella, Penyal de s'Aguila, Ibiza (2006, 2007)

Predator, free-living

8

Eupolymnia nebulosa

(MONTAGU, 1818)

Attached to bottom side of rocks, 1-6 m, Cala Llenya, Cala Olivera, Cala Vedella, Ibiza (2006, 2007)

Detritus feeder, tube-dwelling

9

Harmothoe areolata

(GRUBE, 1860)

Underneath rocks, 1-6 m, Cala Olivera, Penyal de s'Aguila, Ibiza (2006, 2007)

Carnivorous, epibenthic

5

Hesione pantherina

RISSO, 1826

Underneath rocks, 1-10 m, Cala Llenya, Cala Olivera, Ibiza (2007)

Carnivorous, free-living

2

Hirudo medicinalis

LINNAEUS, 1758

Purchased at a local pharmacy, Aachen

Hematophageous, free-living

3

Lepidonotus clava

(MONTAGU, 1808)

On algae-covered rocks, 1-10 m, Cala Olivera, Penyal de s'Aguila, Ibiza (2006, 2007)

Carnivorous, epibenthic

6

Lumbricus terrestris

LINNAEUS, 1758

Purchased from a local vendor, Aachen

Detritus feeder, burrowing

12

Lumbrineris cf. fragilis

(MÃœLLER, 1776)

Infaunal, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Carnivorous, epibenthic/burrowing

3

Neoleanira tetragona

(OERSTED, 1845)

in silt, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Carnivorous, epibenthic

1

Nephtys hombergii

SAVIGNY, 1818

Infaunal, on tidal flats, Königshafen, Sylt (2008);

in silt, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Carnivorous, motile burrower

2

Nereis diversicolor

(MÃœLLER, 1776)

Infaunal, on tidal flats, Königshafen, Sylt (2008).

Additional specimens, kindly provided by J. von Döhren, were

collected on the isle of Helgoland (Germany)

Omnivorous, gallery-building

35

Odontosyllis cf. fulgurans

(AUDOUIN & MILNE-EDWARD, 1833)

On algae-incrusted rocks and in silt samples, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Carnivorous, epibenthic

4

Ophelia limacina

(RATHKE, 1843)

Infaunal, 3-12 m, Cala Llenya, Ibiza (2006, 2007)

Detritus feeder

4

Phyllodoce maculata

(LINNAEUS, 1767)

Infaunal, on tidal flats, Königshafen, Sylt 2008

Hunting predator/scavenger, free-living

3

Pista cristata

(MÃœLLER, 1776)

Attached to hard substrates and in silt, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Detritus feeder, tube-dwelling

2

Sabella penicillus

LINNAEUS, 1767

Clump of tubes recovered from a silt sample, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Suspension feeder, tube-dwelling

4

Scalibregma inflatum

RATHKE, 1843

In silt, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Detritus feeder

5

Sthenelais cf. limicola

EHLERS, 1864

Infaunal, 3-12 m, Cala Llenya, Ibiza (2007)

Predator, epibenthic

3

Thelepus cincinnatus

(FABRICIUS, 1780)

Attached to rocks and in silt, 90-200 m, Raunefjord, Hjeltefjord, Bergen (2008)

Detritus feeder, tube-dwelling

1

Tomopteris helgolandica

(GREEFF, 1879)

Two specimens recovered from a dredge sample, Raunefjord, Hjeltefjord, Bergen (2008)

Predator, pelagic

2