[CINC] Biotoxin Monitoring Update: August 28, 2009
Mary_C_Fritzsche at nps.gov
Mary_C_Fritzsche at nps.gov
Tue Sep 1 13:26:10 PDT 2009
This comes from CINP marine biologist Dan Richards:
FYI, here is a recent update on the biotoxin monitoring. ....
I ran into Bob DeLong at the airport last week and he mentioned that the
lack of food issue with the sea lions seems to have gone away for the most
part. While severe, the upwelling collapse was relatively short lived and
bait fish are back. He has been seeing animals seizing from Domoic Acid at
SMI, noting that the occurrence of DA has been very sporadic this year, and
this report does show the diatoms being abundant at SMI.
please pass this on to anyone else that might be interested.
----- Forwarded by Dan Richards/CHIS/NPS on 08/31/2009 09:40 AM -----
"Langlois, Gregg
(CDPH-DDWEM)"
<Gregg.Langlois at c To
dph.ca.gov> "Program REDTIDE"
<Redtide at cdph.ca.gov>
08/28/2009 01:08 cc
PM
Subject
Biotoxin Monitoring Update: August
28, 2009
The following is a brief update on phytoplankton observations and toxin
monitoring for the past several weeks.
Alexandrium has been observed in low to moderate numbers at a variety of
locations recently, particularly at sites in Marin, Sonoma, and Mendocino
counties. PSP toxins have been detected in shellfish from Santa Barbara to
Del Norte counties, with high concentrations of these toxins detected in
Marin and Sonoma counties.
Pseudo-nitzschia, mostly the nontoxic species in the delicatissima complex,
remains common to abundant at a number of locations. Domoic acid has not
been detected in recent shellfish samples from these regions.
The remainder of the phytoplankton assemblage is a captain’s platter of
diatoms and dinos, varying in species composition and ratios with location.
Red tides and impressive displays of bioluminescence have been reported
from Monterey Bay northward to the Sonoma coast.
The annual quarantine on sport-harvesting of mussels went into effect on
May 1 and will continue through October 31.
Our thanks to all of you that take the time to collect samples, provide
field identifications, or simply to contact us with your visual
observations. Every bit of information is useful to piece together a
picture of what is happening along the coast.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(P-n = Pseudo-nitzschia and Al = Alexandrium)
(Abundant = >=50%; Common = 10-49%; Present = 1-9%; Rare = <1%)
(Embedded image moved to file: pic06688.gif)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
TEXT ONLY:
DEL NORTE
Crescent City: Al rare, P-n abundant (mostly nontoxic); all
diatoms (Chaetoceros, Thalassiosira common).
HUMBOLDT
Humboldt Bay N: P-n common; mostly diatoms (Chaetoceros common)
and a few dinos.
Humboldt Bay S: P-n common; mostly diatoms (Chaetoceros,
Thalassiosira common).
Shelter Cove: P-n rare.; mostly diatoms (Coscinodiscus,
Chaetoceros common) and a couple zooplankton.
MENDOCINO
Van Damme: Alexandrium common; a few diatoms and dinos and
much detritus.
Pt. Arena: No toxic spp.; all diatoms (Coscinodiscus,
Navicula, Licmophora) and detritus.
SONOMA
Fort Ross: Al present, P-n common (toxic, nontoxic);
mostly diatoms (Chaetoceros common) and several dinos.
~ low concentration of PSP toxins in
mussels farther north at Anchor Bay.
~ strong bioluminescence observed along
the southern Sonoma coast (thanks Cathleen!).
Bodega Harbor: Al rare, P-n common; diverse mix of diatoms
(Chaetoceros, Eucampia, Guinardia common) and dinos (Protoperidinium
common).
~ high concentration of PSP toxins in
sentinel mussels (626 ug/100 g).
MARIN
Tomales Bay, mouth: Al rare, P-n common (toxic spp.); Cal reports mix
of diatoms (Chaetoceros, Guinardia common) and dinos.
" " White Gulch: Al rare, P-n present; mix of diatoms
(Chaetoceros abundant) and dinos (Ceratium, Gonyaulax spinifera,
Noctiluca).
" " Tom's Pt.: Al rare, P-n present; mix of diatoms
(Chaetoceros, Guinardia common) and dinos (Protoperidinium common).
Tomales Bay, outer: Al rare, P-n present; mostly diatoms (Chaetoceros
abundant) and several dinos (Ceratium, Protoperidinium).
~ high concentration of PSP toxins (201
ug/100 g) in shellfish from outer bay. Red tides, bioluminescence reported.
Drakes Bay: Al present; mostly dinos (Ceratium furca,
Gonyaulax spinifera, Noctiluca common). Red tides, bioluminescence
reported.
~ high concentration of PSP toxins (281
ug/100 g) in sentinel mussels.
Drakes Estero: Al rare; all dinos (Ceratium spp., Gonyaulax
spinifera, and a small, unidentified, unarmored dino are common).
~ high concentrations of PSP toxins
(966 ug/100 g) in shellfish from outer, mid-estero.
Bolinas Lagoon: Al rare, P-n common (toxic & nontoxic); mix of
diatoms (Leptocylindrus common) and dinos (Gonyaulax spinifera common).
SF
Farallon Islands: No toxic spp. (end of July); a rarely observed
bloom of Corethron (75%), along with several other diatoms in low numbers.
Presidio Pier: P-n present; mix of diatoms (Coscinodiscus
common, Chaetoceros, Leptocylindrus present) and dinos in low numbers.
NOAA Pier: Al rare, P-n rare; Ned reports lots of diatoms
(Leptocylindrus abundant) along with numerous dinos in low numbers.
Pt. Bonita Offshore: P-n common; all diatoms (Chaetoceros abundant,
Stephanopyxis common).
SAN MATEO
Pacifica Pier: Al rare, P-n present; mostly dinos (Ceratium
spp., Gonyaulax spinifera common). Red tides reported along the San Mateo
coast.
Princeton Harbor: Al rare, P-n rare; mix of diatoms (Chaetoceros
common) and dinos (Ceratium furca, Gonyaulax spinifera common).
Ano Nuevo: P-n rare; mostly dinos (Ceratium, Gonyaulax
spinifera, Noctiluca common) and lots of zooplankton.
SANTA CRUZ
Santa Cruz Pier: Al rare, P-n present (toxic spp.); UCSC reports
dominance of diatoms (Chaetoceros abundant) with several dinos in the mix.
Santa Cruz Harbor: P-n present (toxic & nontoxic); mostly diatoms
(Eucampia, Chaetoceros common) and several dinos.
Capitola Pier: No toxic spp.; mostly detritus and a few
diatoms and dinos in very low numbers.
Twin Lakes Beach: No toxic spp.; mostly diatoms (Chaetoceros
abundant, Eucampia common) with several dinos (Protoperidinium, Ceratium).
Seabright Beach: Al rare; mostly diatoms (Chaetoceros abundant,
Eucampia common) with several dinos (Noctiluca, Ceratium).
Seacliff Pier: P-n present (nontoxic spp.); All diatoms
(Chaetoceros common).
MONTEREY
Commercial Wharf: P-n present; all diatoms (Chaetoceros common) and
some zooplankters.
SAN LUIS OBISPO
San Simeon: Al rare, P-n rare; mostly diatoms (Chaetoceros
really abundant) and a few dinos and zooplankton.
Cayucos Pier: No toxic spp.; all diatoms (Nitzschia common)
and lots of detritus.
Morro Bay outer: Al rare, P-n present; mostly diatoms
(Chaetoceros abundant) and a few dinos.
Morro Bay mid: Al rare, P-n common; mostly diatoms (Chaetoceros
abundant) with a few dinos.
~ low concentration of PSP toxins in shellfish.
Diablo Canyon: Al rare, P-n common (mostly nontoxic spp.);
mostly diatoms (Chaetoceros abundant) and a diversity of dinos in low
numbers.
Cal Poly Pier: Al rare, P-n common (toxic & nontoxic); Sam
reports diversity of diatoms and several dinos as well.
Pismo Pier: Al rare, P-n abundant (nontoxic); mix of
diatoms (Chaetoceros common) and dinos (Ceratium common).
SANTA BARBARA
Goleta Pier: P-n common (mostly nontoxic spp.); a few
other diatoms and several dinos.
Ellwood Pier: Al present, P-n present (abundant on 8/11);
Sylvia reports lots of dinos (Prorocentrum common) and several diatoms.
SB Nearshore: P-n common (nontoxic); all dinos (Prorocentrum,
Ceratium common).
PnB #2 (SB Channel): P-n abundant end of July (nontoxic spp.); diverse
mix of diatoms and dinos.
PnB #5 (SB Channel): P-n rare end of July; mostly diatoms (Nitzschia
common) and several dinos (Protoperidinium present).
San Miguel Is.: P-n abundant ( 98%, nontoxic spp.); a few
diatoms and dinos in the haystack.
Anacapa Landing: P-n abundant (nontoxic spp.); the remaining few
cells were a mix of diatoms and dinos in very low numbers.
Pt. Pitas, Offshore: P-n common end of July (toxic); mix of diatoms
and dinos (Ceratium common).
VENTURA
Santa Cruz Is., Offshore: P-n common (nontoxic spp.); diversity
of diatoms (Chaetoceros common) and dinos (Ceratium, Dinophysis caudata).
Ventura Pier: Al rare, P-n common (nontoxic); mix of
diatoms (Chaetoceros, Leptocylindrus common) and dinos (Prorocentrum
common).
Vent. Harbor: P-n rare beginning of Aug.; mix of diatoms
(Chaetoceros, Lithodesmium common) and dinos (Ceratium, Prorocentrum
common).
Vent. Harbor, Offshore: P-n common (nontoxic); mix of diatoms
(Chaetoceros common) and dinos (Ceratium common).
Port Hueneme Pier: P-n common (nontoxic); mostly dinos (Ceratium,
Prorocentrum common) and a few diatoms.
LOS ANGELES
Santa Monica Pier: No toxic spp.; mostly dinos (Ceratium spp.
abundant) and one diatom sp. (Chaetoceros common).
Redondo Beach Pier: No toxic spp.; mostly dinos (Ceratium spp.
Abundant, Lingulodinium present) and some diatoms (Chaetoceros common).
Palos Verdes: No toxic spp.; mostly dinos (Ceratium,
Lingulodinium common) and diatoms (Chaetoceros common).
Catalina Is.: P-n present (nontoxic); mostly diatoms
(Navicula abundant, Chaetoceros common) and dinos (Ceratium).
Catalina Is., Toyon: No toxic spp.; mostly zooplankton (copepods,
barnacle nauplii) and a couple wary dinoflagellates.
ORANGE
Newport, Offshore: No toxic spp.; mostly dinos (Ceratium,
Lingulodinium common) and zooplankton.
Dana Pt., Offshore: No toxic spp.; mostly diatoms (Chaetoceros
common) and several dinos at the end of July.
SAN DIEGO
Agua Hedionda Lagoon: P-n present (nontoxic).; All dinos (Prorocentrum,
Ceratium common) and lots of zooplankton (copepods, barnacle nauplii,
ciliates).
Scripps Pier: No toxic spp.; SIO reports a diverse mix of
dinos (Ceratium common) and many diatoms as well.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
________________________
Gregg W. Langlois
Senior Environmental Scientist
California Dept. of Public Health
Richmond Laboratory Campus
850 Marina Bay Parkway, G165
Richmond, CA 94804
(W) 510-412-4635
(F) 510-412-4637
Gregg.Langlois at cdph.ca.gov
_______________________
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