246
Keywords: Climate change, Oil pollution, Zooplankton,
Copepod, Sex ratio
Future warmer oceans will most likely increase ship traffic in the northern ocean environment. This study investigates the sensitivity to higher temperature (10 °C and 14 °C)
and pyrene exposure (Water control, Acetone control, 1 nM,
10 nM, 100 nM and 100+ nM) on lab-cultured male Calanus
finmarchicus. The males are generally smaller than the
females, have significantly less lipid and produce less biomass as fecal pellets. Male survival decreased rapidly (86.1%
to 28.9% at ended experiment) due to temperature and
decreased 50% due to pyrene exposure. It was found that
male Calanus finmarchicus produce less than 10% of female
production given the same conditions, but both sexes
decreased Specific Pellet Production (SPP) when exposed to
pyrene treatments. Due to the higher sensitivity of the male
copepod the sex ratio of the population will be skewed
towards the female. The population response to so few males
in Calanus finmarchicus is not well known and further studies will be needed.
15.2.4 Population Dynamics of Crustacean
Cirriped Pollicipes pollicipes in the Moroccan
Atlantic Coast
Hajar Bourassi
1,2*
, Hakima Zidane
2
, Ayoub Baali
1,2
,
Mohamed I. Malouli
2
, Imane Haddi
3,2
, Ahmed Yahyaoui
1
1
Zoology and general biology laboratory, Sciences
Faculty of Rabat, Morocco
2
Department of Fisheries Resources, National Institute of
fishery Research, Casablanca, Morocco
3
Earth sciences department, Faculty of Sciences,
University Hassan II, Casablanca, Morocco
*corresponding author: hajar.bourassi@gmail.com
Keywords: Pollicipes pollicipes, Density, TAC, Intertidal
biodiversity, Population dynamic
The fisheries environment has been subject of increasing
pressure of the industrial and human activities. Many species
that are considered as biological indicators of value and
information are suffering the consequences, such as crustacean cirripeds: Pollicipes pollicipes (goose barnacle). Those
represent important coastal resources for population livelihoods and coastal ecosystems. Yet, they are informally
exploited despite the ministerial decrees that regulate their
exploitation. To support the implementation of a management plan, various scientific studies are conducted on this
species. Accordingly, considering the current concern for the
conservation of the resources, we carried out a monthly monitoring program, within our larger scale study on the population dynamic of P. pollicipes, during the year 2016–2017 at
two exploitable areas: Mansouria and Souiria Kdima. Those
are characterized by the important deposits of the species
and the high rate of its exploitation, but also vary by biotope
features. This work studied goose barnacle population structure, density and biomass of different populations. The
results obtained show that goose barnacle’s abundance and
biomass significantly differ between the seasons and from
one site to another (P < 0.05) due to the biotope features: the
density of Mansouria’s population is over 50% higher than
Souiria Kdima’s. We also compared the RC size (corresponding to the distance between the two calcareous plates:
Rostrum and Carina) of the goose barnacles in function of
the area. The results showed that Mansouria’s individuals are
significantly larger than those from Souiria Kdima (P < 0.05).
This may be due to the low rate of exploitation and to the low
shore level where they grow, so a longer duration of immersion. The structure of both populations showed that the minimum size fixed by the ministry of fisheries (RC > 25 mm) is
too low. This work together with the ongoing histological
study will provide correct information to adjust the size regulation and more of the management plan of this resource.
15.2.5 First Characterization of Deep-Sea
Sponges on Seamounts in the Galapagos Marine
Reserve
Marie F. Creemers
1,2*
, Salomé Buglass
1
, Henry Reiswig
3
,
Sarah M. Griffiths
4
, Evelyn Taylor-Cox
4
, Robert Winch
4
,
Etienne Rastoin
1
, Pelayo Salinas de León
1,5
, Amanda Bates
4
,
Patricia Martí Puig
1
1
Charles Darwin Foundation, Av Charles Darwin s/n,
Puerto Ayora, Santa Cruz, Galapagos Islands, Ecuador
2
Ocean & Earth Sciences Department, University of
Southampton, Southampton, United Kingdom
3
University of Victoria and Royal B.C. Museum, Victoria,
B. C., Canada
4
School of Science and the Environment, Manchester
Metropolitan University, Manchester, United Kingdom
5
Pristine Seas, National Geographic Society, Washington,
D.C., USA
*corresponding author: mcreemers@alumni.ulg.ac.be
The Galapagos Marine Reserve (GMR) harbors approximately 300 seamounts providing ecosystem services to the
local community, yet, little is known about their habitats and
biodiversity. Recognized as priority habitats by the United
Nations, seamounts have recently become the focus of rising interest with regards to sustainable management and
conservation. With the revised zonation of the GMR,
increasing our current knowledge of Galapagos seamount
fauna has arisen as an important priority. Deep-sea sponges
are a habitat- forming taxon of key ecological importance
and great economic interest. Baseline information is therefore necessary to improve the management of sponge-associated systems. The Charles Darwin Foundation initiated
the project “Seamounts of the GMR” in partnership with the
Galapagos National Park. In 2015, the Ocean Exploration
Trust E/V Nautilus explored three seamounts in the northern
part of the GMR using remotely operated vehicles (ROVs),
Appendices
Keywords: Climate change, Oil pollution, Zooplankton,
Copepod, Sex ratio
Future warmer oceans will most likely increase ship traffic in the northern ocean environment. This study investigates the sensitivity to higher temperature (10 °C and 14 °C)
and pyrene exposure (Water control, Acetone control, 1 nM,
10 nM, 100 nM and 100+ nM) on lab-cultured male Calanus
finmarchicus. The males are generally smaller than the
females, have significantly less lipid and produce less biomass as fecal pellets. Male survival decreased rapidly (86.1%
to 28.9% at ended experiment) due to temperature and
decreased 50% due to pyrene exposure. It was found that
male Calanus finmarchicus produce less than 10% of female
production given the same conditions, but both sexes
decreased Specific Pellet Production (SPP) when exposed to
pyrene treatments. Due to the higher sensitivity of the male
copepod the sex ratio of the population will be skewed
towards the female. The population response to so few males
in Calanus finmarchicus is not well known and further studies will be needed.
15.2.4 Population Dynamics of Crustacean
Cirriped Pollicipes pollicipes in the Moroccan
Atlantic Coast
Hajar Bourassi
1,2*
, Hakima Zidane
2
, Ayoub Baali
1,2
,
Mohamed I. Malouli
2
, Imane Haddi
3,2
, Ahmed Yahyaoui
1
1
Zoology and general biology laboratory, Sciences
Faculty of Rabat, Morocco
2
Department of Fisheries Resources, National Institute of
fishery Research, Casablanca, Morocco
3
Earth sciences department, Faculty of Sciences,
University Hassan II, Casablanca, Morocco
*corresponding author: hajar.bourassi@gmail.com
Keywords: Pollicipes pollicipes, Density, TAC, Intertidal
biodiversity, Population dynamic
The fisheries environment has been subject of increasing
pressure of the industrial and human activities. Many species
that are considered as biological indicators of value and
information are suffering the consequences, such as crustacean cirripeds: Pollicipes pollicipes (goose barnacle). Those
represent important coastal resources for population livelihoods and coastal ecosystems. Yet, they are informally
exploited despite the ministerial decrees that regulate their
exploitation. To support the implementation of a management plan, various scientific studies are conducted on this
species. Accordingly, considering the current concern for the
conservation of the resources, we carried out a monthly monitoring program, within our larger scale study on the population dynamic of P. pollicipes, during the year 2016–2017 at
two exploitable areas: Mansouria and Souiria Kdima. Those
are characterized by the important deposits of the species
and the high rate of its exploitation, but also vary by biotope
features. This work studied goose barnacle population structure, density and biomass of different populations. The
results obtained show that goose barnacle’s abundance and
biomass significantly differ between the seasons and from
one site to another (P < 0.05) due to the biotope features: the
density of Mansouria’s population is over 50% higher than
Souiria Kdima’s. We also compared the RC size (corresponding to the distance between the two calcareous plates:
Rostrum and Carina) of the goose barnacles in function of
the area. The results showed that Mansouria’s individuals are
significantly larger than those from Souiria Kdima (P < 0.05).
This may be due to the low rate of exploitation and to the low
shore level where they grow, so a longer duration of immersion. The structure of both populations showed that the minimum size fixed by the ministry of fisheries (RC > 25 mm) is
too low. This work together with the ongoing histological
study will provide correct information to adjust the size regulation and more of the management plan of this resource.
15.2.5 First Characterization of Deep-Sea
Sponges on Seamounts in the Galapagos Marine
Reserve
Marie F. Creemers
1,2*
, Salomé Buglass
1
, Henry Reiswig
3
,
Sarah M. Griffiths
4
, Evelyn Taylor-Cox
4
, Robert Winch
4
,
Etienne Rastoin
1
, Pelayo Salinas de León
1,5
, Amanda Bates
4
,
Patricia Martí Puig
1
1
Charles Darwin Foundation, Av Charles Darwin s/n,
Puerto Ayora, Santa Cruz, Galapagos Islands, Ecuador
2
Ocean & Earth Sciences Department, University of
Southampton, Southampton, United Kingdom
3
University of Victoria and Royal B.C. Museum, Victoria,
B. C., Canada
4
School of Science and the Environment, Manchester
Metropolitan University, Manchester, United Kingdom
5
Pristine Seas, National Geographic Society, Washington,
D.C., USA
*corresponding author: mcreemers@alumni.ulg.ac.be
The Galapagos Marine Reserve (GMR) harbors approximately 300 seamounts providing ecosystem services to the
local community, yet, little is known about their habitats and
biodiversity. Recognized as priority habitats by the United
Nations, seamounts have recently become the focus of rising interest with regards to sustainable management and
conservation. With the revised zonation of the GMR,
increasing our current knowledge of Galapagos seamount
fauna has arisen as an important priority. Deep-sea sponges
are a habitat- forming taxon of key ecological importance
and great economic interest. Baseline information is therefore necessary to improve the management of sponge-associated systems. The Charles Darwin Foundation initiated
the project “Seamounts of the GMR” in partnership with the
Galapagos National Park. In 2015, the Ocean Exploration
Trust E/V Nautilus explored three seamounts in the northern
part of the GMR using remotely operated vehicles (ROVs),
Appendices