Citation:

s00227-016-2871-5

Name: Impacts of ocean acidification on multiplication and caste organisation of parasitic trematodes in their gastropod host
Published: 2016-06-21
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Growth/Morphology; Laboratory experiment; Mollusca; Parorchis sp.; Philophthalmus sp.; Platyhelminthes; Reproduction; South Pacific; Species interaction; Temperate

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Abstract:

Ocean acidification is predicted to impact the structure and function of all marine ecosystems in this century. As focus turns towards possible impacts on interactions among marine organisms, its effects on the biology and transmission potential of marine parasites must be evaluated. In the present study, we investigate two marine trematode species (Philophthalmus sp. and Parorchis sp., both in the family Philophthalmidae) infecting two marine gastropods. These trematodes are unusual in that their asexually multiplying stages within snails display a division of labour, with two distinct castes, a large-bodied morph producing infective stages and a smaller morph playing a defensive role against other competing parasites. Using a potentiometric ocean acidification simulation system, we test the impacts of acidified seawater (7.8 and 7.6 pH) on the production of free-living infective stages (cercariae), the size and survival of encysted resting stages (metacercariae), and the within-host division of labour measured as the ratio between numbers of the two morphs. In general, low pH conditions caused an increase in cercarial production and a reduction in metacercarial survival. The ratio of the two castes within snail hosts tended to shift towards more of the smaller defensive morphs under low pH. However, the observed effects of reduced pH were species specific and not always unimodal. These results suggest that ocean acidification can affect the biology of marine parasites and may also impact transmission success and parasite abundance of some trematodes, with possible consequences for marine communities and ecosystems.

Keyword(s):

Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Growth/Morphology; Laboratory experiment; Mollusca; Parorchis sp.; Philophthalmus sp.; Platyhelminthes; Reproduction; South Pacific; Species interaction; Temperate

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.8. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: -46.333330 * Longitude: 171.100000

Date/Time Start: 2015-02-01T00:00:00 * Date/Time End: 2015-02-28T00:00:00

Event(s):

Lower_Portobello_Bay * Latitude: -46.333330 * Longitude: 171.100000 * Date/Time Start: 2015-02-01T00:00:00 * Date/Time End: 2015-02-28T00:00:00

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2016-06-21.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Guilloteau, Pauline		study
2	Species	Species		Guilloteau, Pauline
3	Figure	Fig		Guilloteau, Pauline
4	Incubation duration	Inc dur	weeks	Guilloteau, Pauline
5	Identification	ID		Guilloteau, Pauline		tag_snail
6	Shell length	Shell l	mm	Guilloteau, Pauline		snail
7	Treatment	Treat		Guilloteau, Pauline
8	Number of individuals	Ind No	#	Guilloteau, Pauline		cercariae
9	Time in days	Time	days	Guilloteau, Pauline
10	Number of observations	NOBS	#	Guilloteau, Pauline
11	Length	l	mm	Guilloteau, Pauline		metacercaria
12	Width	w	mm	Guilloteau, Pauline		metacercaria
13	Surface area	SA	cm²	Guilloteau, Pauline		metacercaria
14	Identification	ID		Guilloteau, Pauline		chamber number
15	Period	Period		Guilloteau, Pauline
16	Shell length	Shell l	mm	Guilloteau, Pauline		initial_snail
17	Number of individuals	Ind No	#	Guilloteau, Pauline		small_redia
18	Number of individuals	Ind No	#	Guilloteau, Pauline		large_redia
19	Ratio	Ratio		Guilloteau, Pauline		small/large rediae
20	Shell length	Shell l	mm	Guilloteau, Pauline		final_snail
21	Temperature, water	Temp	°C	Guilloteau, Pauline
22	Temperature, water, standard deviation	Temp std dev	±	Guilloteau, Pauline
23	Salinity	Sal		Guilloteau, Pauline
24	Salinity, standard deviation	Sal std dev	±	Guilloteau, Pauline
25	Oxygen saturation	O2 sat	%	Guilloteau, Pauline
26	Oxygen saturation, standard deviation	O2 sat std dev	±	Guilloteau, Pauline
27	Alkalinity, total	AT	µmol/kg	Guilloteau, Pauline	Potentiometric titration
28	Alkalinity, total, standard deviation	AT std dev	±	Guilloteau, Pauline	Potentiometric titration
29	Carbon, inorganic, dissolved	DIC	µmol/kg	Guilloteau, Pauline	Colorimetric
30	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Guilloteau, Pauline	Colorimetric
31	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
32	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
33	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
37	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
38	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
39	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

65652 data points

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