The Geography and Body-Size Dependence of Top-Down Forcing in New England's Lobster-Groundfish Interaction

Wahle, Richard A.; Brown, C. G.; Hovel, Kevin A.

doi:10.5343/bms.2011.1131

Cited by 41 publications

(36 citation statements)

References 34 publications

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“…Our tethering assays revealed that lobster risk from predation in southern Maine is highly size dependent, which is largely consistent with previous work examining the susceptibility of juvenile lobsters to predation (Wahle, 1992;Wahle and Steneck, 1992;Wahle et al, 2013). Wahle et al (2013) found that tethered lobster survival was non-linear in Maine, with survival exponentially increasing for smaller (b 25 mm CL) juvenile lobsters. We did not tether lobsters b 26 mm CL.…”

Section: Discussionsupporting

confidence: 90%

“…Tethering has been used in several previous studies to examine predation risk for lobsters and other crustaceans (Aronson and Heck, 1995;Herrnkind and Butler, 1986;Hovel and Lipcius, 2001;Wahle and Steneck, 1992;Wahle et al, 2013;Witman and Sebens, 1992). Mills et al (2008) exposed potential biases associated with tethering artifacts that potentially limit the utility of these types of data for comparing lobster survival across sites without site-specific correction factors.…”

Section: Size-specific Predation Ratesmentioning

confidence: 99%

“…Without developing site-and sizespecific correction factors to account for increased lobster vulnerability associated with being tethered, our results cannot be used to make inferences about absolute lobster predation rates. Wahle et al (2013) examined how body-size and location affect vulnerability to predation using tethered juvenile lobsters and conducted video surveillance in the field to examine potential artifacts associated with tethering (Peterson and Black, 1994). Although this study acknowledged that tethering may artificially alter the vulnerability of tethered prey to specific types of predators (i.e., those with different foraging modalities), it revealed that tethering can be used effectively to examine how specific traits such as body-size mediate the relative predation risk of motile species such as lobsters.…”

Section: Size-specific Predation Ratesmentioning

confidence: 99%

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Influence of predator identity on the strength of predator avoidance responses in lobsters

Wilkinson

Grabowski

Sherwood

et al. 2015

Journal of Experimental Marine Biology and Ecology

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Section: Discussionsupporting

confidence: 90%

Section: Size-specific Predation Ratesmentioning

confidence: 99%

Section: Size-specific Predation Ratesmentioning

confidence: 99%

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Influence of predator identity on the strength of predator avoidance responses in lobsters

Wilkinson

Grabowski

Sherwood

et al. 2015

Journal of Experimental Marine Biology and Ecology

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“…In the southern GOM, lobsters are exposed to a greater diversity and abundance of fish predators compared to the northern GOM; many predatory fish, such as tautog and scup, are absent or rare in Maine (Wahle et al. , MDMF , MDMR ), and the abundance of sea bass and striped bass is low compared to Massachusetts (McMahan and Grabowski unpublished data, MDMF , MDMR ). Furthermore, Wahle et al.…”

Section: Discussionmentioning

confidence: 99%

Nonconsumptive effects of a range‐expanding predator on juvenile lobster (Homarus americanus) population dynamics

McMahan

Grabowski

2019

Ecosphere

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Distribution shifts poleward are a widespread response to climate change and can result in altered community composition and interactions among species that previously were geographically isolated. The novel communities and species interactions that may arise during range shifts provide an opportunity to study fundamental ecological processes, while also addressing potential conservation issues. Black sea bass (Centropristis striata) historically ranged from the Gulf of Mexico to Cape Cod, but recently have expanded north into the Gulf of Maine. Very little is known about the impact of this range expansion on benthic community structure throughout the coastal waters of the Gulf of Maine. To investigate the effects of sea bass on the behavior of juvenile American lobsters (Homarus americanus), we manipulated the presence of sea bass olfactory cues and quantified shelter use and foraging behavior of lobsters from three regions in the Gulf of Maine with different potential contact histories with sea bass. Sea bass presence increased shelter usage and reduced foraging in lobsters, but contact history influenced the strength of these behavioral responses. Lobsters with no previous contact with sea bass did not significantly increase shelter usage or decrease movement in their presence but did reduce their foraging rate on mussels. This observed reduction in consumption indicates that naïve lobsters recognize novel predators, but the ineffective anti‐predator responses exhibited support the naive prey hypothesis. Meanwhile, lobsters with the longest potential contact history with sea bass significantly increased shelter usage when sea bass were present; however, they exhibited limited movement and foraging behavior in both the absence and presence of sea bass. Finally, lobsters with a short potential contact history with sea bass exhibited increased shelter usage, reduced movement, and reduced mussel consumption in the presence of sea bass, revealing that juvenile lobsters quickly adapt anti‐predator defenses to avoid this novel threat. Overall, these results suggest that prey contact history with novel predators mediates the strength of their nonconsumptive effects, and consequently can influence geographic patterns in predator–prey dynamics.

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“…Furthermore, Wahle et al (2013) found that predation intensity on tethered lobsters was greater in southern New England than in Maine. Hence, when faced with the tradeoff between foraging success and predation risk Dill 1990, Lima 1998b), lobsters exposed to greater predation intensity may favor risk-avoidance behavior.…”

Section: Discussionmentioning

confidence: 98%

Ecological and socioeconomic implications of a northern range expansion of black sea bass, Centropristis striata

McMahan¹

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The Geography and Body-Size Dependence of Top-Down Forcing in New England's Lobster-Groundfish Interaction

Cited by 41 publications

References 34 publications

Influence of predator identity on the strength of predator avoidance responses in lobsters

Influence of predator identity on the strength of predator avoidance responses in lobsters

Nonconsumptive effects of a range‐expanding predator on juvenile lobster (Homarus americanus) population dynamics

Ecological and socioeconomic implications of a northern range expansion of black sea bass, Centropristis striata

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