WoRMS name details

Arbacia crassispina Mortensen, 1910

513123  (urn:lsid:marinespecies.org:taxname:513123)

 unaccepted (subjective junior synonym)
Species
marine, brackish, fresh, terrestrial
recent only
Mortensen, T. 1910. The Echinoidea of the Swedish South Polar Expedition. Wissenschaftliche Ergebnisse der Schwedischen Südpolar Expedition 6/4, 1-114., available online at http://www.biodiversitylibrary.org/item/29751#page/209/mode/1up
page(s): 32-36; pl. 5: figs. 1-3, pl. 15: figs 1, 4-5, 7, 11, 14 [details]   
Status Lessios et al. (2012: p. 140) state that: "There seems to be little doubt that A. crassispina and A. dufresni are not...  
Status Lessios et al. (2012: p. 140) state that: "There seems to be little doubt that A. crassispina and A. dufresni are not separate species, as the two morphs are not distinct in the phylogeny of either the mitochondrial or the nuclear gene. The morphological differences between the two nominal species are so slight, that Clark (1925) questioned whether they could be maintained as separate species. Mortensen (1935 [p. 580]), the author of A. crassispina, agreed that it may be a local variety of A. dufresni, but then changed his mind (Mortensen 1941 [p. 7-8])." Although Lessios et al. (2012) do not formally synonymize the two species, the evidence presented for the identity of the two taxa seems very strong and they are thus treated as synonyms here.

 [details]
Kroh, A. & Mooi, R. (2018). World Echinoidea Database. Arbacia crassispina Mortensen, 1910. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=513123 on 2018-05-25
Date
action
by
2010-09-07 08:24:41Z
created
2012-03-13 07:09:10Z
changed

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


original description Mortensen, T. 1910. The Echinoidea of the Swedish South Polar Expedition. Wissenschaftliche Ergebnisse der Schwedischen Südpolar Expedition 6/4, 1-114., available online at http://www.biodiversitylibrary.org/item/29751#page/209/mode/1up
page(s): 32-36; pl. 5: figs. 1-3, pl. 15: figs 1, 4-5, 7, 11, 14 [details]   

basis of record Mortensen, T. (1935). A Monograph of the Echinoidea. II. Bothriocidaroida, Melonechinoida, Lepidocentroida, and Stirodonta, 647 pp., C. A. Reitzel & Oxford University Press, Copenhagen & London.
page(s): 580 [details]   

redescription Mortensen, T. (1941). Echinoderms of Tristan de Cunha. Results Norwegian Scientific Expedition Tristan da Cunha 1937-38. 7: 1-10.
page(s): 7-8 [details]  Available for editors  PDF available [request] 

status source Lessios, H. A., Lockhart, S., Collin, R., Sotil, G., Sanchez-Jerez, P., Zigler, K. S., Perez, A. F., Garrido, M. J., Geyer, L. B., Bernardi, G., Vaquier, V. D., Haroun, R. & Kessing, B. D. 2012. Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution. Molecular Ecology 21, 130-144., available online at https://doi.org/10.1111/j.1365-294x.2011.05303.x
page(s): 140 [details]   
From editor or global species database
Status Lessios et al. (2012: p. 140) state that: "There seems to be little doubt that A. crassispina and A. dufresni are not separate species, as the two morphs are not distinct in the phylogeny of either the mitochondrial or the nuclear gene. The morphological differences between the two nominal species are so slight, that Clark (1925) questioned whether they could be maintained as separate species. Mortensen (1935 [p. 580]), the author of A. crassispina, agreed that it may be a local variety of A. dufresni, but then changed his mind (Mortensen 1941 [p. 7-8])." Although Lessios et al. (2012) do not formally synonymize the two species, the evidence presented for the identity of the two taxa seems very strong and they are thus treated as synonyms here.

 [details]