Document of bibliographic reference 317192

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

A new deep-sea genus of Paramunnidae (Isopoda: Asellota) from the Northwest Pacific adjacent to the Kuril-Kamchatka Trench with remarks on paedomorphosis in deep-sea species

Abstract

Reductogonium Iroquois gen. nov. sp. nov., a new genus and species of paramunnid isopods from the Northwest Pacific open abyssal plain to the east of the Kuril-Kamchatka Trench, is described based on materials from the KuramBio expedition (2012). The new genus is distinguished from other paramunnid genera by its reduced pereonite 7 that lacks appendages in adult individuals (one seta is presented instead of the pereopod VII on its position). It is also distinguished by its head, which has a medial crest bearing a tuft of setae on its posterior part, and by the extremely long articles of antennae and pereopods. The unusual paedomorphic features of the new genus might be adaptations to deep-sea conditions. Paedomorphosis was recorded for different taxa of deep-sea animals. The reduction of the last pair of pereopods, which corresponds to the state of manca stages, was observed independently in different families and orders of Isopoda. Finding a new species and a new genus of the Paramunnidae with paedomorphic features confirmed that this phenomenon is a common evolutionary strategy for deep-sea Asellota.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000496861900028

Bibliographic citation

Golovan, O.A.; Malyutina, M.V. (2019). A new deep-sea genus of Paramunnidae (Isopoda: Asellota) from the Northwest Pacific adjacent to the Kuril-Kamchatka Trench with remarks on paedomorphosis in deep-sea species. Prog. Oceanogr. 178: 102200. https://dx.doi.org/10.1016/j.pocean.2019.102200

Topic

Marine

Is peer reviewed

true