Defecation of Dimethylsulfoniopropionate (DMSP) by the Copepod Acartia tonsa as Functions of Ambient Food Concentration and Body DMSP Content

DMSP-consuming bacteria associated with the calanoid copepod Acartia tonsa (Dana).

DMSP-consuming bacteria (DCB) were recovered from the body and fecal pellets of the copepod Acartia tonsa (Dana). The most probable number of DCB associated with starved A. tonsa was 9.2x10(2) cells copepod(-1). The abundance of DCB recovered from the copepod body increased to 1.6-2.8x10(4) after the copepod fed on DMSP-containing alga. DCB abundance associated with fecal pellets averaged 1.2x1...

Bacterial Catabolism of Dimethylsulfoniopropionate (DMSP)

Dimethylsulfoniopropionate (DMSP) is a metabolite produced primarily by marine phytoplankton and is the main precursor to the climatically important gas dimethylsulfide (DMS). DMS is released upon bacterial catabolism of DMSP, but it is not the only possible fate of DMSP sulfur. An alternative demethylation/demethiolation pathway results in the eventual release of methanethiol, a highly reactiv...

Modulation of dimethylsulfoniopropionate ( DMSP ) concentration in an 1

Dynamics of dimethylsulfoniopropionate ( DMSP ) in a migratory grazer : a laboratory simulation study

Laboratory experiments were conducted to simulate an environment in which the copepod Acartia tonsa (Dana) migrates between food-abundant, low salinity water and food-limiting, high salinity water. The goal of this study is to understand how migratory grazers influence the dynamics of dimethylsulfoniopropionate (DMSP) in a vertically stratified water column. Results show that the DMSP content o...

DIMETHYLSULFONIOPROPIONATE ( DMSP ) AND DMSP - LYASE IN CNIDARIAN - ALGAL SYMBIOSES By Denise

Title of Dissertation: DIMETHYSULFONIOPROPIONATE (DMSP) AND DMSP-LYASE IN CNIDARIAN ALGAL SYMBIOSES. Denise Marie Yost, Doctor of Philosophy, 2010 Directed By: Dr. Carys L. Mitchelmore, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory Dimethylsulfoniopropionate (DMSP) is a multifaceted sulfur compound produced by several groups of marine phytoplankton, m...