Acidification alters predator-prey interactions of blue crab Callinectes sapidus and soft-shell clam Mya arenaria
Fuente:
PANGAEA
Enregistré dans:
| Auteurs principaux: | , , |
|---|---|
| Format: | Dataset Open Access |
| Langue: | en |
| Publié: |
PANGAEA
2017
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1867169119804063744 |
|---|---|
| author | Glaspie, Cassandra N Longmire, Katherine Seitz, Rochelle D |
| author_facet | Glaspie, Cassandra N Longmire, Katherine Seitz, Rochelle D |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Acidification due to anthropogenic CO2 pollution, along with episodic or persistent acidification that occurs in coastal environments, will likely result in severe seasonal acidification in estuarine environments. Acidification decreases the fitness of individual species, but the degree to which predator-prey interactions will be impacted is largely unknown. This mesocosm study examined the effect of CO2 acidification on crab-bivalve predator-prey interactions involving two commercially important Chesapeake Bay species, the blue crab Callinectes sapidus and the soft-shell clam Mya arenaria. In particular, the direct effects of CO2 acidification on clam growth and behavior, and the indirect effects of CO2 acidification on interactions between crabs and clams were examined. Mya arenaria were grown in CO2-acidified water (pH 7.2) or ambient conditions (pH 7.8) for 30 days. To determine the effect of acidification on clam responsiveness to mechanical disturbance, a probe was slowly moved towards clams until they ceased pumping (a behavior to avoid detection by predators), and the distance between the probe and the clam's siphon was noted. Clams were exposed to predation by C. sapidus, which were held under acidified or ambient conditions for 48 h. Callinectes sapidus handling time, search time, and encounter rate were measured from video. Acidified clams had lighter shells than ambient clams, indicating that shell dissolution occurred. Acidification reduced the responsiveness of M. arenaria to a mechanical disturbance that simulated an approaching predator. As compared to ambient trials, crabs in acidified trials had higher encounter rates; however, this was offset by crabs taking longer to find the first clam in trials, and by increased occurrence of crabs eating only a portion of the prey available. As a result, there was no net change in predation-related clam mortality in acidified trials as compared to ambient conditions. Understanding how acidification will impact food webs in productive estuarine environments requires an examination of the direct impacts of acidification on organism behavior and physiology, as well as indirect effects of acidification mediated through predator-prey interactions. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_873555 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Acidification alters predator-prey interactions of blue crab Callinectes sapidus and soft-shell clam Mya arenaria Glaspie, Cassandra N Longmire, Katherine Seitz, Rochelle D Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Arthropoda; Ash free dry mass; Ash mass; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Brackish waters; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Comment; Containers and aquaria (20-1000 L or < 1 m**2); DATE/TIME; Date/time end; Date/time start; Description; Distance; Dry mass; Dummy variable; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Incubation duration; Individuals; Laboratory experiment; Length; Mass; Mollusca; Mortality/Survival; Mya arenaria; North Atlantic; Number; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Oxygen; Oxygen, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, standard deviation; pH, total scale; Ratio; Registration number of species; Salinity; Salinity, standard deviation; Shell growth; Single species; Size; Species; Species interaction; Status; Temperate; Temperature, water; Temperature, water, standard deviation; Time in hours; Time in seconds; Treatment; Type; Uniform resource locator/link to reference; Wet mass; York_river Acidification due to anthropogenic CO2 pollution, along with episodic or persistent acidification that occurs in coastal environments, will likely result in severe seasonal acidification in estuarine environments. Acidification decreases the fitness of individual species, but the degree to which predator-prey interactions will be impacted is largely unknown. This mesocosm study examined the effect of CO2 acidification on crab-bivalve predator-prey interactions involving two commercially important Chesapeake Bay species, the blue crab Callinectes sapidus and the soft-shell clam Mya arenaria. In particular, the direct effects of CO2 acidification on clam growth and behavior, and the indirect effects of CO2 acidification on interactions between crabs and clams were examined. Mya arenaria were grown in CO2-acidified water (pH 7.2) or ambient conditions (pH 7.8) for 30 days. To determine the effect of acidification on clam responsiveness to mechanical disturbance, a probe was slowly moved towards clams until they ceased pumping (a behavior to avoid detection by predators), and the distance between the probe and the clam's siphon was noted. Clams were exposed to predation by C. sapidus, which were held under acidified or ambient conditions for 48 h. Callinectes sapidus handling time, search time, and encounter rate were measured from video. Acidified clams had lighter shells than ambient clams, indicating that shell dissolution occurred. Acidification reduced the responsiveness of M. arenaria to a mechanical disturbance that simulated an approaching predator. As compared to ambient trials, crabs in acidified trials had higher encounter rates; however, this was offset by crabs taking longer to find the first clam in trials, and by increased occurrence of crabs eating only a portion of the prey available. As a result, there was no net change in predation-related clam mortality in acidified trials as compared to ambient conditions. Understanding how acidification will impact food webs in productive estuarine environments requires an examination of the direct impacts of acidification on organism behavior and physiology, as well as indirect effects of acidification mediated through predator-prey interactions. |
| title | Acidification alters predator-prey interactions of blue crab Callinectes sapidus and soft-shell clam Mya arenaria |
| topic | Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Arthropoda; Ash free dry mass; Ash mass; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Brackish waters; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Comment; Containers and aquaria (20-1000 L or < 1 m**2); DATE/TIME; Date/time end; Date/time start; Description; Distance; Dry mass; Dummy variable; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Incubation duration; Individuals; Laboratory experiment; Length; Mass; Mollusca; Mortality/Survival; Mya arenaria; North Atlantic; Number; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Oxygen; Oxygen, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, standard deviation; pH, total scale; Ratio; Registration number of species; Salinity; Salinity, standard deviation; Shell growth; Single species; Size; Species; Species interaction; Status; Temperate; Temperature, water; Temperature, water, standard deviation; Time in hours; Time in seconds; Treatment; Type; Uniform resource locator/link to reference; Wet mass; York_river |
| url | https://doi.org/10.1594/PANGAEA.873555 |