Recent Extinct Land Snails (Euconulidae) from the Gambier Islands with Remarkable Apertural Barriers - MNHN - Muséum national d'Histoire naturelle Access content directly
Journal Articles Pacific Science Year : 2001

Recent Extinct Land Snails (Euconulidae) from the Gambier Islands with Remarkable Apertural Barriers

Ahmed Abdou

Abstract

Based on study of material collected in the Gambier Islands (eastern Polynesia) by the 1934 Mangarevan Expedition and in 1997, two endemic species of Euconulidae are shown to exhibit apertural barriers unlike those of any other Pacific island limacoids, both in their ontogeny and development. The barriers are fully developed only in juveniles and subadults and are resorbed in full-grown individuals. Aukena, hitherto considered a subgenus of the Hawaiian-Polynesian genus Hiona, is elevated to genus rank. Aukena endodonta, n. sp., with six apertural barriers (one columellar, three parietal, two palatal), is described, and A. tridentata (Baker, 1940) is redescribed. The natural environment of the Gambier Islands had already been severely altered by 1934, and the two endemic species of Aukena are considered extinct. One other endemic euconulid without apertural barriers, Philonesia mangarevae Baker, 1940, survives in a small patch of native forest at the base of Mount Mokoto.
Fichier principal
Vignette du fichier
Bouchet & Abdou 2001_Recent Extinct Land Snails (Euconulidae) from the Gambier Islands.pdf (1.13 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

mnhn-03172109 , version 1 (17-03-2021)

Identifiers

Cite

Philippe Bouchet, Ahmed Abdou. Recent Extinct Land Snails (Euconulidae) from the Gambier Islands with Remarkable Apertural Barriers. Pacific Science, 2001, 55 (2), pp.121-127. ⟨10.1353/psc.2001.0011⟩. ⟨mnhn-03172109⟩

Collections

MNHN
26 View
45 Download

Altmetric

Share

Gmail Facebook X LinkedIn More