TY - JOUR
T1 - New species of Echinoderes (Kinorhyncha: Cyclorhagida) from Spitsbergen, with additional information about known Arctic species
AU - Grzelak, Katarzyna
AU - Sørensen, Martin Vinther
PY - 2018/2/7
Y1 - 2018/2/7
N2 - The kinorhynch fauna in two Arctic fjords at Spitsbergen was explored and eight species of Echinoderes were recorded, of which three are new to science and described herein. Echinoderes daenerysae sp. nov. is recognized by middorsal spines on segments 6 and 8 only, lateroventral spines on segments 6–9, laterodorsal and ventrolateral tubes on segment 2, lateroventral tubes on segment 5, lateral accessory tubes on segment 8, laterodorsal tubes on segment 9 and small laterodorsal tubes on segment 10. Echinoderes rhaegali sp. nov. has middorsal spines on segments 4, 6 and 8, lateroventral spines on segments 6–9, sublateral and ventrolateral tubes on segment 2, lateroventral tubes on segment 5, lateral accessory tubes on segment 8 and laterodorsal tubes on segment 10 in males. Echinoderes drogoni sp. nov. has middorsal spines on segments 4–8, lateroventral spines on segments 6–9, lateral accessory tubes on segment 5, glandular cell outlets type 2 in subdorsal, laterodorsal, sublateral and ventromedial positions on segments 2, in midlateral positions on segment 5, in sublateral positions on segment 8 and in subdorsal positions on segment 10; segment 11 has divided tergal plates. Moreover, types of other Arctic Echinoderes, including E. angustus, E. aquilonius, E. eximus, E. peterseni, E. svetlanae and E. tubilak, were re-examined and new information on glandular cell outlets type 2 is provided. Our results suggest that Arctic Echinoderes species have a circum-Artic distribution. Morphological analysis indicates that the occurrence of tubes may show intraspecific variation. http://zoobank.org/urn:lsid:zoobank.org:pub:CBE29FE8-9233-4E3C-9757-FF9576B06C74.
AB - The kinorhynch fauna in two Arctic fjords at Spitsbergen was explored and eight species of Echinoderes were recorded, of which three are new to science and described herein. Echinoderes daenerysae sp. nov. is recognized by middorsal spines on segments 6 and 8 only, lateroventral spines on segments 6–9, laterodorsal and ventrolateral tubes on segment 2, lateroventral tubes on segment 5, lateral accessory tubes on segment 8, laterodorsal tubes on segment 9 and small laterodorsal tubes on segment 10. Echinoderes rhaegali sp. nov. has middorsal spines on segments 4, 6 and 8, lateroventral spines on segments 6–9, sublateral and ventrolateral tubes on segment 2, lateroventral tubes on segment 5, lateral accessory tubes on segment 8 and laterodorsal tubes on segment 10 in males. Echinoderes drogoni sp. nov. has middorsal spines on segments 4–8, lateroventral spines on segments 6–9, lateral accessory tubes on segment 5, glandular cell outlets type 2 in subdorsal, laterodorsal, sublateral and ventromedial positions on segments 2, in midlateral positions on segment 5, in sublateral positions on segment 8 and in subdorsal positions on segment 10; segment 11 has divided tergal plates. Moreover, types of other Arctic Echinoderes, including E. angustus, E. aquilonius, E. eximus, E. peterseni, E. svetlanae and E. tubilak, were re-examined and new information on glandular cell outlets type 2 is provided. Our results suggest that Arctic Echinoderes species have a circum-Artic distribution. Morphological analysis indicates that the occurrence of tubes may show intraspecific variation. http://zoobank.org/urn:lsid:zoobank.org:pub:CBE29FE8-9233-4E3C-9757-FF9576B06C74.
U2 - 10.1080/17451000.2017.1367096
DO - 10.1080/17451000.2017.1367096
M3 - Journal article
SN - 1745-1000
VL - 14
SP - 113
EP - 147
JO - Marine Biology Research
JF - Marine Biology Research
IS - 2
ER -