%0 Journal Article
%T New records of marine choanoflagellates off the Chilean coast Nuevos registros de coanoflagelados marinos de la costa de Chile
%A Katia Soto-Liebe
%A Gloria Collantes
%A Juan Kuznar
%J Investigaciones Marinas
%D 2007
%I 
%X This is the first report of planktonic choanoflagellates from the Chilean coast, relating their abundance with that of bacteria and viruses. Surface water samples were taken off Antofagasta, Montemar, and Puerto Montt and samples from ballast tanks were also analyzed. The choanoflagellates were identified following morphological type descriptions. Viruses and bacteria were stained with SYBR Green and choanoflagellates, bacteria, and viruses were counted simultaneously using red autofluorescence for the former and green fluorescence for the latter two. Six species of Acanthoecidae were observed for the first time in Chilean waters: Calliacantha multispina (0.3-103 L-1), Acanthocorbis apoda, Stepha-noeca diplocostata (2.0-103 L-1), Crinolina isefiordensis, Parvicorbicula superpositus, and Pleurasiga minima (5.0-103 L-1). The concentrations of bacteria (1.1-10(6)-4.5-10 6) and viral-like particles (VLPs) (7.9-10 6-21-10(6)) agreed with those typically found in marine coastal waters. In addition, Acanthocorbis asymmetrica was found in ballast waters, where its high concentration (20-103 L-1) likely resulted from the particular physical and biological environment therein Este es el primer reporte sobre coanoflagelados planct車nicos de la costa chilena y su abundancia se relacion車 con la de bacterias y virus. Se analizaron muestras de aguas superficiales obtenidas en Antofagasta, Montemar y Puerto Montt. Adem芍s se analizaron muestras adicionales de aguas provenientes de estanques de lastre. Los coanoflagelados se determinaron de acuerdo a descripciones morfol車gicas tipo. Virus y bacterias fueron te idos con SYBR Green y la enumeraci車n simult芍nea de coanoflagelados, bacterias y virus se determin車 a trav谷s de autofluorescencia roja y fluorescencia verde respectivamente. Seis especies de Acanthoecidae fueron observadas por primera vez en aguas chilenas: Calliacantha multispina (0,3-103 L-1), Acanthocorbis apoda y Stephanoeca diplocostata (2,0-103 L1), Crinolina isefiordensis, Parvicorbicula superpositus y Pleurasiga minima (5.0 ← 103 L-1). Las concentraciones de bacteria (1,1-10(6)- 4.5-10 6) y virus (7,9-10 6 - 21-10(6)) son las t赤picamente descritas para aguas marinas costeras. En aguas de lastre se encontr車 Acanthocorbis asymmetrica cuya alta concentraci車n (20-103 L-1) debiera ser consecuencia de este particular ambiente f赤sico y biol車gico
%K coanoflagelados
%K bacteria
%K virus
%K agua de lastre
%K epifluorescencia
%K Chile
%K Choanoflagellates
%K bacteria
%K virus
%K ballast water
%K epifluorescence
%K Chile
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-71782007000200011