Quantitative allometry of gamete production by Mercenaria mercenaria into old age

Peterson, CH

doi:10.3354/meps029093

Cited by 56 publications

(35 citation statements)

References 4 publications

(13 reference statements)

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“…These results suggest that the schedule and magnitude of reproductive effort (including the onset of reproduction) depend more on size than age in Y. notabilis. Similar sizedependent reproductive traits have been reported in other marine bivalves such as Macoma balthica (Harvey & Vincent 1989), Mercenaria mercenaria (Peterson 1983(Peterson , 1986 and Mytilus edulis (Kautsky 1982, Bayne et al 1983). suffer high mortality due to predation by the greater than 15 mm in shell length.…”

Section: Discussionsupporting

confidence: 49%

Size-dependent reproductive traits of Yoldia notabilis (Bivalvia: Protobranchia)

Nakaoka¹

1994

Mar. Ecol. Prog. Ser.

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Between-site variation in age and size at maturity, egg size, fecundity and reproductive effort was measured in a population of the bivalve Yoldia notabilis in Otsuchi Bay, northeastern Japan, and tests were conducted to address whether these reproductive traits are dependent on size or age. The diameter of mature oocytes increased with age and size, as did fecundity and reproductive effort. Most individuals were mature at 3 yr of age (Age 3) at the shallower station (10 m depth) and at Age 4 at the deeper station (14 m), although the size at maturity was similar (between 15 and 20 mm shell length) at the 2 stations. This is the size at which the bivalve escapes heavy predation from the crab Paradorippe granulata. Age-specific reproductive effort was higher at the shallower station than at the deeper one; however, reproductive effort did not differ significantly between stations when compared on the basis of size. These lines of evidence suggest that the onset of reproduction and the schedule of reproductive effort depend more on size than age. The observed size-dependency of reproduction is considered to be associated with size-dependent mortality rate due to predation, as well as with slzelimited reproductive capacity due to morphological constra~nts in shell volun~e.

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Section: Discussionsupporting

confidence: 49%

Size-dependent reproductive traits of Yoldia notabilis (Bivalvia: Protobranchia)

Nakaoka¹

1994

Mar. Ecol. Prog. Ser.

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“…Blue crabs C. sapidus are important predators and scavengers in southeastern estuaries (Eggleston et al, 1992;Micheli, 1997) and are the primary consumer of juvenile hard clams M. mercenaria in these areas (Micheli, 1995(Micheli, , 1997. Blue crabs are also a threat to adult clams, as they can nip their siphons and decrease their feeding efficiency, growth, and fecundity (Peterson, 1986;Coen and Heck, 1991;Irlandi, 1994). Clams release attractive chemicals into the water as they feed, and blue crabs follow these waterborne chemical odor plumes to locate their clam prey (Weissburg and Zimmer-Faust, 1993;Weissburg et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Hard Clams (Mercenaria mercenaria) Evaluate Predation Risk Using Chemical Signals from Predators and Injured Conspecifics

2006

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Abstract-Hard clams, Mercenaria mercenaria, are sessile, filter-feeding organisms that are heavily preyed upon by blue crabs, which find their clam prey using chemical cues. Clams may evade blue crabs by reducing their pumping (feeding) behavior when a threat is perceived. The purpose of this study was to determine the type of signals that clams use to detect consumers. Clams decreased their pumping time in response to blue crabs and blue crab effluent, but not to crab shells, indicating that chemical signals and not mechanical cues mediated the response of clams to distant predators. Because predator diet can influence prey evaluation of predatory threats, we compared clam responses to blue crabs fed a steady diet of fish, clams, or that were starved prior to the experiment. In addition, we used injured clams as a stimulus because many organisms detect predators by sensing the odor of injured con-or heterospecifics. Clams reduced feeding in response to injured conspecifics and to blue crabs that had recently fed. Clams reacted similarly to fed crabs, regardless of their diet, but did not respond to starved blue crabs. Because blue crabs are generalist predators and the threat posed by these consumers is unrelated to the crab's diet, we should expect clam reactions to blue crabs to be independent of the crab's diet. The failure of clams to react to starved blue crabs likely increases their vulnerability to these consumers, but clam responses to injured conspecifics may constitute a strategy that allows animals to detect an imminent threat when signals emanating from blue crabs are not detectable.

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“…Additionally, mussels produce additional byssal threads to in crease the force needed to dislodge them from substrates (Coté 1995, Leonard et al 1999, Shin et al 2009) and increase abductor muscle mass to deter prying predators (Freeman & Byers 2006). Morphological changes in shell thickness are a trade-off with soft tissue mass and gonad size, and thus increasing shell thickness may lower bivalve fecundity (Peterson 1986).…”

Section: Introductionmentioning

confidence: 99%

“…mon strategy adopted by immobile or slow-moving species that are less able to flee (Leonard et al 1999, Nakaoka 2000, Freeman & Byers 2006, Turner 2008. Although avoidance behaviors and morphological changes can be effective and necessary predator deterrents (Nakaoka 2000, Powers & Kittinger 2002, Smee & Weissburg 2006a, Flynn & Smee 2010, they are often costly to prey, resulting in reductions in growth and fecundity (Peterson 1986, Relyea & Werner 1999, Nakaoka 2000, Large & Smee 2013.…”

Section: Introductionmentioning

confidence: 99%

Eastern oysters Crassostrea virginica deter crab predators by altering their morphology in response to crab cues

Robinson¹,

Lunt²,

Marshall³

et al. 2014

Aquat. Biol.

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Quantitative allometry of gamete production by Mercenaria mercenaria into old age

Cited by 56 publications

References 4 publications

Size-dependent reproductive traits of Yoldia notabilis (Bivalvia: Protobranchia)

Size-dependent reproductive traits of Yoldia notabilis (Bivalvia: Protobranchia)

Hard Clams (Mercenaria mercenaria) Evaluate Predation Risk Using Chemical Signals from Predators and Injured Conspecifics

Eastern oysters Crassostrea virginica deter crab predators by altering their morphology in response to crab cues

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