Title: Non-Predatory Shell Damage in Neogene Western Atlantic Deep-Burrowing Bivalves
Abstract: Other| June 01, 2005 Non-Predatory Shell Damage in Neogene Western Atlantic Deep-Burrowing Bivalves RICHARD R. ALEXANDER; RICHARD R. ALEXANDER 1Department of Geological and Marine Sciences, Rider University, Lawrenceville, NJ 08648, [email protected] Search for other works by this author on: GSW Google Scholar GREGORY P. DIETL GREGORY P. DIETL 2Center for Marine Science, University of North Carolina–Wilmington, Wilmington, NC 28409 *Current Address: Department of Geology & Geophysics, Yale University, New Haven, CT 06520. Search for other works by this author on: GSW Google Scholar Author and Article Information RICHARD R. ALEXANDER 1Department of Geological and Marine Sciences, Rider University, Lawrenceville, NJ 08648, [email protected] GREGORY P. DIETL *Current Address: Department of Geology & Geophysics, Yale University, New Haven, CT 06520. 2Center for Marine Science, University of North Carolina–Wilmington, Wilmington, NC 28409 Publisher: SEPM Society for Sedimentary Geology Accepted: 03 Dec 2004 First Online: 03 Mar 2017 Online Issn: 1938-5323 Print Issn: 0883-1351 Society for Sedimentary Geology PALAIOS (2005) 20 (3): 280–295. https://doi.org/10.2110/palo.2004.p04-29 Article history Accepted: 03 Dec 2004 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation RICHARD R. ALEXANDER, GREGORY P. DIETL; Non-Predatory Shell Damage in Neogene Western Atlantic Deep-Burrowing Bivalves. PALAIOS 2005;; 20 (3): 280–295. doi: https://doi.org/10.2110/palo.2004.p04-29 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyPALAIOS Search Advanced Search Abstract Few shell-crushing predators can excavate prey living deep within the sediment. Despite this infaunal refuge from predators, many deep-burrowing bivalves display a strikingly high incidence of shell damage when compared with species living at shallower depths. A non-predatory origin is necessary to explain this high incidence of injury. To evaluate the generality of this hypothesis, repair frequency (number of repairs per shell), along with position and geometry, were determined for 68 Neogene bivalve species from the US Atlantic and Gulf Coastal Plain, seven of which are classified as deep burrowers (>20 cm depth of sediment penetration). Panopea bitruncata, Panopea floridana, Panopea reflexa, and Panopea americana, which are among the deepest burrowers (up to 100 cm), have repair frequencies (2.8– 6.2) that are higher than any other species, while the value for Cyrtopleura costata (0.76) is exceeded only by semi-infaunal Atrina species (1.12). However, not all deep-burrowing species had such high incidences of damage. Two moderately deep-burrowing species (Anodontia alba and Tagelus plebeius; 20–50 cm) showed repair frequencies (0.04–0.30) that overlapped the range (0.001–0.52) for shallow-burrowing, semi-infaunal, and epifaunal species. Therefore, any generalizations about the relationship between depth of sediment penetrated and frequency of shell damage are inadvisable. Most scars on deep burrowers were not attributable to the direct activity of shell-crushing predators because: (1) injury occurred late in life when individuals were positioned in the safety of a deep burrow; (2) scar types consistent with a predatory origin were rare; and (3) scars frequently occurred on the anterior of the shell, which is least accessible to digging predators. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2005
Publication Date: 2005-06-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 21
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