Additional Insight into the Structure and Biology of Abyssotherma-Pacifica (Bronnimann, Vandover and Whittaker) from the East Pacific Rise

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
1991
Editor: 
Journal Title: 
Micropaleontology
Journal Date: 
Place Published: 
Tertiary Title: 
Volume: 
37
Issue: 
3
Pages: 
303-312
Section / Start page: 
Publisher: 
ISBN Number: 
0026-2803
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:A1991GH65000005
LDEO Publication Number: 
Call Number: 
Key Words: 
Abstract: 

The surface of a newly described remaneicid foraminifer, Abyssotherma pacifica, contains agglutinated particles of obsidian. Beneath the umbilical surface of the test of the foraminifer is a loosely aggregated detrital mat through which large pseudopodal trunks emerge. The obsidian flakes were removed from the surface of the test by immersion of the foraminifera in HF for 12-18 hours. This permitted microtoming and further study by light and electron microscopy. The test has an electron dense inner organic lining approximately 0.5-mu-m thick which is overlain by a mesh of organic cement fibrils surrounding the obsidian particles. New chambers are added by accretion without decomposition of previous walls. Bacteria and unrecognizable materials were found in vacuoles which were presumably digestive vacuoles. Although we were searching for possible endosymbiotic chemolithotrophic bacteria, we found no evidence of the phenomenon due to the vent community context. The question was not completely resolved because the cell fine structure was not well-preserved by the fixation methods used during field collection.

Notes: 

Gh650Times Cited:7Cited References Count:14

DOI: