Click
here to close Hello! We notice that
you are using Internet Explorer, which is not supported by Echinobase
and may cause the site to display incorrectly. We suggest using a
current version of Chrome,
FireFox,
or Safari.
Oecologia
2019 Dec 01;1914:945-956. doi: 10.1007/s00442-019-04548-0.
Show Gene links
Show Anatomy links
Predator identity dominates non-consumptive effects in a disease-impacted rocky shore food web.
Murie KA
,
Bourdeau PE
.
???displayArticle.abstract???
Predicting the effects of predator diversity loss on food webs is challenging, because predators can both consume and induce behavioral responses in their prey (i.e., non-consumptive effects or NCEs). Studies manipulating predator diversity and investigating NCEs are rare, especially in marine systems. Recently, a severe outbreak of sea star wasting syndrome (SSWS) on the west coast of North America resulted in unprecedented declines of the sea star Pisaster ochraceus. We investigated the consequences of Pisaster loss on an abundant grazer, the black turban snail Tegula funebralis, through NCEs. We combined a laboratory experiment and field surveys to examine the importance of identity vs. diversity in a predator assemblage (Pisaster, crabs, and octopuses) on Tegula behavior, feeding, and growth. Laboratory and field results indicated that predator identity, not diversity, drives Tegula behavior and causes NCEs. Mesocosm treatments with Pisaster caused greater NCEs on Tegula than assemblages without Pisaster. Tegula''s distribution in the field, which is driven primarily by anti-predator behavior, was strongly associated only with Pisaster abundance, and not with the abundance of crabs, octopuses, and other predatory sea stars (Leptasterias spp.). We conclude that Pisaster primarily drives Tegula vertical distribution and may be having strong NCEs on Tegula on northern California rocky shores. Furthermore, predator diversity in northern California does not provide functional redundancy, in terms of NCEs on Tegula, to buffer the system from Pisaster loss. Thus, predator-induced vertical distributions and grazing suppression may not be maintained in areas where Pisaster populations are reduced or slow to recover from SSWS.
Bourdeau,
Cue reliability, risk sensitivity and inducible morphological defense in a marine snail.
2010, Pubmed
Bourdeau,
Cue reliability, risk sensitivity and inducible morphological defense in a marine snail.
2010,
Pubmed
Byrnes,
Predator diversity strengthens trophic cascades in kelp forests by modifying herbivore behaviour.
2006,
Pubmed
Cardinale,
The functional role of producer diversity in ecosystems.
2011,
Pubmed
Duffy,
The functional role of biodiversity in ecosystems: incorporating trophic complexity.
2007,
Pubmed
Estes,
Sea otters: their role in structuring nearshore communities.
1974,
Pubmed
Estes,
Trophic downgrading of planet Earth.
2011,
Pubmed
Gravem,
Shifts in intertidal zonation and refuge use by prey after mass mortalities of two predators.
2017,
Pubmed
,
Echinobase
Gruner,
A cross-system synthesis of consumer and nutrient resource control on producer biomass.
2008,
Pubmed
Hewson,
Densovirus associated with sea-star wasting disease and mass mortality.
2014,
Pubmed
,
Echinobase
Hull,
Can crabs kill like a keystone predator? A field-test of the effects of crab predation on mussel mortality on a northeast Pacific rocky shore.
2017,
Pubmed
,
Echinobase
Jackson,
Historical overfishing and the recent collapse of coastal ecosystems.
2001,
Pubmed
Menge,
Sea Star Wasting Disease in the Keystone Predator Pisaster ochraceus in Oregon: Insights into Differential Population Impacts, Recovery, Predation Rate, and Temperature Effects from Long-Term Research.
2016,
Pubmed
,
Echinobase
Miner,
Large-scale impacts of sea star wasting disease (SSWD) on intertidal sea stars and implications for recovery.
2018,
Pubmed
,
Echinobase
Otto,
Predator diversity and identity drive interaction strength and trophic cascades in a food web.
2008,
Pubmed
Peacor,
The contribution of trait-mediated indirect effects to the net effects of a predator.
2001,
Pubmed
Peckarsky,
Revisiting the classics: considering nonconsumptive effects in textbook examples of predator-prey interactions.
2008,
Pubmed
Preisser,
Predator hunting mode and habitat domain alter nonconsumptive effects in predator-prey interactions.
2007,
Pubmed
Pruitt,
Behavioral types of predator and prey jointly determine prey survival: potential implications for the maintenance of within-species behavioral variation.
2012,
Pubmed
,
Echinobase
Schmitz,
Effects of predator hunting mode on grassland ecosystem function.
2008,
Pubmed
Sih,
Emergent impacts of multiple predators on prey.
1998,
Pubmed
Straub,
Species identity dominates the relationship between predator biodiversity and herbivore suppression.
2006,
Pubmed
Worm,
Impacts of biodiversity loss on ocean ecosystem services.
2006,
Pubmed
Worm,
Global patterns of predator diversity in the open oceans.
2005,
Pubmed