Diversity and abundance of gelatinous zooplankton GO Sars 2013...
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Net samples Eurobasin cruises - Jellynet (670 μm) & other nets (180 μm, 3000 μm) Canadian monitoring program - Jellynet Fish larvae monitoring program – Bongo net (200 μm) CPR Jellyfish swarms Priscilla Licandro, SAHFOS (UK) Aino Hosia, IMR (Norway) Diversity and abundance of gelatinous zooplankton GO Sars – 2013 cruise
Transcript of Diversity and abundance of gelatinous zooplankton GO Sars 2013...
Net samples Eurobasin cruises - Jellynet (670 µm) & other nets (180 µm, 3000 µm)
Canadian monitoring program - Jellynet
Fish larvae monitoring program – Bongo net (200 µm)
CPR
Jellyfish swarms
Priscilla Licandro, SAHFOS (UK)
Aino Hosia, IMR (Norway)
Diversity and abundance of gelatinous zooplankton GO Sars – 2013 cruise
HYDROMEDUSAE (21) SIPHONOPHORA (19) SCYPHOMEDUSAE (7)
Aeginura grimaldii Amygdalina crystallophyes Atolla chuni
Aglantha digitale Chuniphyes multidentata Atolla parva
Botrynema brucei Crystallophyes amygdalina Atolla vanhoeffeni
Bythotiara murrayi Dimophyes arctica Atolla wyvillei
Chromatonema rubrum Gilia reticulata Cyanea sp.
Colobonema sericeum indet. Physonect nectophore sp. 1 Pelagia noctiluca
Crossota rufobrunnea indet. Physonect nectophore sp. 2 Periphylla periphylla
Halicreas minimum Lensia achilles
Halitrephes maasi Lensia conoidea CTENOPHORA (7)
Halopsis ocellata Lensia hunter Beroe abyssicola
Hybocodon sp. Marrus orthocanna Beroe cucumis
Mitrocomella polydiademata Muggiaea bargmannea Beroe gracilis
Modeeria rotunda Nanomia cara Bolinopsis infundibulum
Obelia sp. Nectadamas diomedeae Euplokamis sp.
Pantachogon haeckeli Praya dubia Mertensia ovum
Phialidium islandicum Sphaeronectes sp. sp.n. "horned cydippid"
Podocoryne hartlaubi Thalassophyes crystallina
Ptychogona lactea Vogtia glabra TUNICATA (1)
rhopalonematid sp., small white Vogtia serrata doliolid sp.
Sminthea arctica
Solmissus incisa
GO Sars – 2013 cruise
LIST OF GELATINOUS ZOOPLANKTON SPECIES
Main jellyfish species Jellyfish_net Mocness Harstad and macroplankton trawls
Mesh size 670 µm 180 µm 3000 µm
Sampled depth 0-200 m 0-1000 m 0-1000 m
CNIDARIA
HYDROZOA
Sub-class TRACHYMEDUSAE
Family Rhopalonematidae
Aglantha digitale + + +
Pantachogon haeckeli + + +
Pantachogon sp. +
Sub-class SIPHONOPHORAE
Order Physonectae
Family Agalmatidae
Nanomia cara + + +
Family Diphyidae
Dimophyes arctica + + +
CTENOPHORA
Order Cydippida
Family Mertensiidae
Mertensia ovum + + +
Mertensiidae spp. +
Order Beroida
Family Beroidae
Beroe abyssicola + +
Beroe cucumis + + +
Beroe gracilis +
Beroe spp. + + +
GO Sars – 2013 cruise
A. digitale
P. haeckeli
N. cara
D. arctica
M. ovum
B. cucumis
Different sampling might bias jellyfish diversity
Jellyfish_net Mocness Harstad and macroplankton trawls
Mesh size 670 µm 180 µm 3000 µm
Sampled depth 0-200 m 0-1000 m 0-1000 m
CNIDARIA
HYDROZOA
Sub-class LEPTOMEDUSAE
Family Campanulariidae
Clytia islandica + +
Clytia spp. +
Obelia spp. +
Sub-class SIPHONOPHORAE
Order Physonectae
Family Hippopodiidae
Vogtia glabra +
Vogtia serrata + +
SCYPHOZOA
Family Atollidae
Atolla chuni +
Atolla parva + +
Atolla vanhoeffeni +
Atolla wyvillei + +
Atolla sp. + +
Family Periphyllidae
Periphylla periphylla + +
CTENOPHORA
Order Cydippida
Unidentified Cydippid + +
GO Sars – 2013 cruise
C. islandica
Vogtia sp.
A. wyvillei.
P. periphylla
SOME CONSIDERATIONS
GO Sars – 2013 cruise
• Key jellyfish species are traditionally overlooked due to inadequate sampling methodologies
(e.g. many ctenophores preserved in formalin dissolve after a short time)
• Very limited or none information on the biological traits & environmental preferences of most dominant
jellyfish species
Diversity (species number) in MOCNESS
154
0 2 4 6
MO
C n
et
#
1
2
3
4
5
6
7
8
155
0 2 4 6
157
0 2 4 6 8 10
160
0 2 4 6
161
0 2 4 6
162
0 2 4 6
163
0 2 4 6
168
0 2 4 6
169
0 2 4 6 8 101214161820
170
0 2 4 6 8 101214
171
0 2 4 6 8 10121416
F
F
F
F
F
F
F
F
F f
f
f
f
f
+
+
F = fixed samples, to be identified and counted
+ = fixed samples in addition to material counted (count likely to rise)
Station number
(Norway) (Greenland)
GO Sars – 2013 cruise
Trawl station
101 102 104 105 106 107 108 109 111 115 116 117 118 120 121 122 123 124 125 126 127
Sp
ecie
s n
um
be
r
0
2
4
6
8
10
12
14
16
Harstad and macroplankton trawl
Diversity (species number) in
(Norway) (Greenland)
GO Sars – 2013 cruise
0
2
4
6
8
10
12
171 170 169 168 167 166 165 163 162 161 160 159 157 155 154 153 152
Tot. Jellies in jellynet 0-200 m
Station
Abundance (
ind. 100 m
-3)
(Norway) (Greenland)
GO Sars – 2013 cruise
152 (shallow)
0 100 200 300
MO
C
1
2
3
4
154
0 20 40 60 80
MO
C n
et
#
1
2
3
4
5
6
7
8
155
0 1
157
0 50 100 150
160
0 50 100 150
161
0 50 100 150
162
0 20 40 60 80100
167 (shallow)
0 10 20 30 40 50
1
2
3
4
5
163
0 10 20 30 40 50
168
0 10 20 30 40
F
NB! Fixed samples as indicated in the figure
on diversity (species number) in MOCNESS.
Stations 169-171 not analyzed yet.
Abundance of jellies (ind. 100 m-3) in MOCNESS samples.
(Norway) (Greenland)
GO Sars – 2013 cruise
Station Mocness Jellynet Harstad & macroplankton trawls
152 +
153 +
155 + +
157 +
104 +
162 +
163 +
111 +
167 +
115 +
116 +
169 +
118 +
121 +
170 +
126 +
171 + +
Jellyfish collected for DNA barcoding
(species not yet recorded on GeneBank)
GO Sars – 2013 cruise
DNA barcoding will allow the ID of early stages of hydrozoans and
ctenophores, unidentifiable by morphological features
