2020 the Ecological Society of America Anuual Meeting (Online) , 2020-08-03

Title : ( Morphology of arm ossicles varies in epizoic and non-epizoic ophiuroids )

Authors: Mona Goharimanesh , Zahra Ghassemzadeh , Sabine Stohr , Omid Mirshamsi , Dominique Adriaens ,

Citation: BibTeX | EndNote

Abstract

Background/Question/Methods Ophiuroidea is one of the most diverse classes among extant echinoderms. They occupy marine habitats, ranging from the poles to the equator, from intertidal reefs to hadal depths of at least 6,500 m. The brittle star’s arm includes a series of vertebral ossicles, each articulating with other proximally and distally. This articulated internal skeleton gives the ophiuroid arm a range of motion, important for locomotory and feeding behaviors. This study involves a quantitative investigation of the 3D shape of vertebral ossicles using Micro CT scanned images and geometric morphometric analyses. We aimed to find out how the morphology of the vertebrae changes among species, but also across different habitats. In this study, six vertebrae were selected from the middle and distal part of six different species, belonging to the intertidal and subtidal zone with epizoic and non-epizoic behaviors. Results/Conclusions The result of a PerMANOVA shows that there is a significant difference in ossicle morphology among species and also various habitats. Further analysis including Phylogenetic MANOVA depicted that some landmarks on dorso-proximal and dorso-ventral vertebrae reflect possible ecological adaptations. Accordingly, the specimens showed habitat related differences, independent of their phylogenetic relationship.

Keywords

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@inproceedings{paperid:1080580,
author = {Goharimanesh, Mona and Ghassemzadeh, Zahra and سابین استور and Mirshamsi, Omid and دومینیک آدریان},
title = {Morphology of arm ossicles varies in epizoic and non-epizoic ophiuroids},
booktitle = {2020 the Ecological Society of America Anuual Meeting (Online)},
year = {2020},
location = {IRAN},
keywords = {.},
}

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%0 Conference Proceedings
%T Morphology of arm ossicles varies in epizoic and non-epizoic ophiuroids
%A Goharimanesh, Mona
%A Ghassemzadeh, Zahra
%A سابین استور
%A Mirshamsi, Omid
%A دومینیک آدریان
%J 2020 the Ecological Society of America Anuual Meeting (Online)
%D 2020

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