geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Adaptive evolution in the sorittids marginopora and amphisorus foraminiferida


, : Adaptive evolution in the sorittids marginopora and amphisorus foraminiferida. Scanning Electron Microscopy (2): 53-60

The foraminiferid family Soritidae (suborder Miliolina) includes specialized subfamilies restricted to shallow tropical to subtropical marine waters. Nearly all are giants among foraminiferids, have symbiotic protistan photosynthesizers and complex labyrinthic chambers of cyclical chambers subdivided into chamberlets. Amphisorus and Marginopora, subfamily Soritinae, from the Great Barrier Reef [Australia] were studied by SEM [scanning electron microscopy]. Two types of chamberlets are formed in these 2 genera: equatorial chamberlets and lateral chamberlets. In Amphisorus and Marginopora, the early stages of wall formation in a newly formed equatorial chamberlet have an intermeshed set of calcitic rod bundles that loosely overlap one another. Within the foraminiferal shell, symbionts are concentrated in the cytoplasm of the lateral chamberlets which are exposed to sunlight. Symbiosis between these Foraminiferida and zooxanthellae appears to be a long historical relationship in which the foraminiferal shell was extensively modified to accommodate the symbionts.

US$29.90


Other references

Opolski, G.; Stanisławska, J.; Górecki, A.; Swiecicka, G.; Torbicki, A.; Kraska, T., 1997: Amiodarone in restoration and maintenance of sinus rhythm in patients with chronic atrial fibrillation after unsuccessful direct-current cardioversion. When direct-current (DC) cardioversion is used, sinus rhythm can be restored, at least temporarily, in 80-90% of patients with atrial fibrillation. However, there is a small but significant group of patients with chronic atrial fibrillation in who...

Nolan, S.P.; Fisher, R.D.; Dixon, S.H.; Morrow, A.G., 1969: Quantification of aortic regurgitation with a catheter tip velocitometer. Surgery 65(6): 876-883

Hossain, S.M.G.; Islam, M.N.; Islam, M.M., 2001: Opinion of the tomato growers towards BINA tomato varieties. Farmers from Ishurdi, Rangpur, Magura, and Comilla (120 respondents) in Bangladesh were interviewed from 20 November 1998 to 20 January 1999 to evaluate their opinion regarding the quality of BINA tomato cultivars (Bahar, BINA tomato-2, and BINA t...

Jonkers, D.; Ernst, J.; Pladdet, I.; Stockbrügger, R.; Hameeteman, W., 2006: Endoscopic follow-up of 383 patients with colorectal adenoma: an observational study in daily practice. Endoscopic removal of colorectal adenomas reduces the incidence and mortality of colorectal cancer (CRC), but follow-up surveillance is recommended. Compliance with the Dutch surveillance guidelines and detection of neoplasia during follow-up has...

Fera, T.; Abboud, R.T.; Richter, A.; Johal, S.S., 1986: Acute effect of smoking on elastaselike esterase activity and immunologic neutrophil elastase levels in bronchoalveolar lavage fluid. In order to determine the acute effect of smoking on elastase in bronchoalveolar lavage fluid (BAL), we obtained BAL from 30 smokers twice, the first before smoking (after 8 h of abstinence) and the second 2 min to 1 h after the subjects had smoke...

Shafi, Sayed S., 1993: Human habitat and the environmental imperative. Heptulla, N [Editor] Environment protection in developing countries 35-42

Powell, J.A.; Opler, P.A., 1996: Moths of western North America 4. Distribution of Oecophoridae (sense of Hodges 1983) of western North America. Unknown

Muromtsev, G., 1978: Present-day problems of agricultural microbiology. The diverse role of the soil microflora in supplying the main plant nutrients, in the fixation of atmospheric nitrogen and in the degradation of pesticides is described.

Mathias, M.; Constance, L., 1976: The genus Niphogeton (Umbelliferae)--a second encore. Botanical journal of the Linnean Society: 25 (1) 311-324

Gerhard Lee C., 1999: Meeting societal resource and environmental requirements into the Twenty-first century; a conference report. Environmental Geosciences 6(4): 172-184