In:
Subterranean Biology, Pensoft Publishers, Vol. 33 ( 2020-03-05), p. 87-108
Abstract:
Due to their peculiar and sometimes bizarre morphology, cave fauna (across invertebrates and vertebrates from both aquatic and terrestrial cave habitats) have fascinated researchers throughout history. Despite their success in colonizing most marine ecosystems, the adaptations of cave brittle stars (Ophiuroidea) to a stygobiotic lifestyle have been scarcely examined. Employing comparative methods on a data set of two species belonging to the genus Ophionereis , this study addresses whether a cave-dwelling species from Cozumel exhibited similar troglomorphic traits as those of other taxa inhabiting caves. Our work demonstrated that some characters representing potential morphological cave adaptations in O. commutabilis were: bigger sizes, elongation of arms and tube feet and the presence of traits potentially paedomorphic. In addition, an element of ophiuroid’s photoreceptor system, as well as pigmentation, was observed to be peculiar in this stygobiotic species, plausibly as a result of inhabiting a low light-energy environment. Finally, we add evidence to the statement that O. commutabilis is a cave endemic species, already supported by demography, distribution and origin of this species, and now by a typical array of troglomorphisms.
Type of Medium:
Online Resource
ISSN:
1314-2615
,
1768-1448
DOI:
10.3897/subtbiol.33.48721
DOI:
10.3897/subtbiol.33.48721.figure1
DOI:
10.3897/subtbiol.33.48721.figure2
DOI:
10.3897/subtbiol.33.48721.figure3
DOI:
10.3897/subtbiol.33.48721.figure4
DOI:
10.3897/subtbiol.33.48721.figure5
DOI:
10.3897/subtbiol.33.48721.figure6
DOI:
10.3897/subtbiol.33.48721.suppl1
DOI:
10.3897/subtbiol.33.48721.suppl2
DOI:
10.3897/subtbiol.33.48721.suppl3
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2020
detail.hit.zdb_id:
2633922-5
SSG:
12
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