Reduced Competition and Altered Feeding Behavior Among Marine Snails After a Mass Extinction

Dietl, Gregory P.; Herbert, Gregory S.; Vermeij, Geerat J.

doi:10.1126/science.1106182

Cited by 69 publications

(56 citation statements)

References 18 publications

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“…Drilling on the central part of the valve over adductor muscle scars, described for R. venosa in Chesapeake Bay (Harding et al, 2007), was not observed in our study. Rapa whelks in the Black Sea demonstrated the edge-drilling behavior, which is more risky and may be selectively advantageous in environments where enemies are abundant, especially competitors that might attempt to steal prey (Dietl et al, 2004). Indeed, the bottom communities of the Black Sea are overpopulated by rapa whelks and suffer from high predatory pressure and euthrophication; therefore the competition for prey must be strong.…”

Section: Tablementioning

confidence: 98%

Predation mechanisms of Rapana venosa (Gastropoda: Muricidae) in different biotopes along the Black Sea coast

Kosyan

2016

Marine Pollution Bulletin

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Section: Tablementioning

confidence: 98%

Predation mechanisms of Rapana venosa (Gastropoda: Muricidae) in different biotopes along the Black Sea coast

Kosyan

2016

Marine Pollution Bulletin

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“…However, the strength of concentric ornament varies greatly among bivalves and the effectiveness of drill holes on ribs is largely unknown. Thus, it is premature to suggest that concentric ornament fails to serve as a protection against drilling predators such as muricid and naticid gastropods, which are important predators of bivalves in modern and ancient oceans (e.g., Kabat 1990;Kowalewski 1993;Kelley and Hansen 2003;Dietl et al 2004;Klompmaker 2009;Sawyer and Zuschin 2010;Chattopadhyay et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Shell ornamentation as a likely exaptation: evidence from predatory drilling on Cenozoic bivalves

Klompmaker¹,

Kelley²

2015

Paleobiology

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Abstract.-Predation is an important process in modern oceans and in the evolutionary history of marine ecosystems. Consequently, it has been hypothesized that shelled prey modified their ornamentation in response to predation. However, bivalve ornamentation has also been argued to be important in maintaining a stable life position in the sediment and in burrowing. To test whether concentric ribs were effective against drilling by carnivorous gastropods, we examined drill hole position and completeness for four Cenozoic bivalve species that differ in rib strength (Astarte radiata, A. goldfussi, Lirophora glyptocyma, and L. latilirata). The percentage of drill holes located between the ribs increases with increasing rib strength, whereas the percentage of drill holes on top of ribs decreases. This result suggests that gastropods select the drill hole site more effectively as rib strength increases, thereby saving time and energy, and that natural selection favors gastropods that select drill hole sites between ribs. Because of this greater stereotypy, the percentage of drill holes that are incomplete is generally lower in strongly ribbed species. The proportion of drill holes located on top of ribs is greater for incomplete than complete holes, implying that ribs can be effective against predators, but only when selected as the drilling location. We show that ribs are most effective against drilling predation for bivalves with moderately sized ribs, between which gastropods have difficulty siting drill holes. Concentric ribs are unlikely to have evolved as an adaptation against drilling predation because concentric ribs evolved in the Paleozoic and were already common in the Mesozoic, whereas drilling frequency increased later, in the Late Cretaceous-Paleogene. Moreover, rib strength of North American Astarte did not change through this time interval. Thus, the ribs considered here are a likely exaptation to drilling given their effectiveness at deterring drilling predation on bivalves with moderate ribs.

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“…It has been reported before that the benefits of collective consumption are limited for another muricid Stramonita haemastoma (Brown & Alexander, 1994) and again for a muricid Nucella lapillus Hughes and Dunkin (1984) pointed out the competitive effects of another predator and observed that the other predators or "interlopers" lengthen the pre-consumption inspection and handling times. Another approach, Dietl, Herbert and Vermeij (2004) and Dietl and Herbert (2005) argued that competition may cause changes in the attack type of the predatory snails. Güler and Lök (2016) pointed out dislocation of the snail on its prey due to group-attacking which can cause unsuccessful predation attempts.…”

Section: Discussionmentioning

confidence: 99%

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Güler¹,

Lök²

2019

Turk. J. Fish. Aquat. Sci.

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The behavior of a group of predators may have effects which cannot be predicted using data from a solitarily observed predator however in many experimental studies on the aspects of predation, one predator at a time have been examined. In the present study consumption rates of H. trunculus were tested with experimental setups that allow communal feeding, and some reassessments were attempted to be made on the foraging capabilities of this species, which can be used in ecology and aquaculture studies alike. Furthermore, the influence of predator hunger level was evaluated in an auxiliary experiment. Experiments were designed as two equal periods. The prey species Mytilus galloprovincialis were offered to the snails in four size groups. Consumption rates of H. trunculus were found to be highly consistent between the first and the second period and were about 0.09 mussel snail -1 day -1 ; higher than previous reports. In the hunger level experiment which had a shorter experimental duration, consumption rates were quite high in the beginning and were decreased drastically after the first period as expected. Consumed prey sizes did not differ between main and hunger level experiments; therefore, snails did not make a particular size selection caused by their hunger level.

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Reduced Competition and Altered Feeding Behavior Among Marine Snails After a Mass Extinction

Cited by 69 publications

References 18 publications

Predation mechanisms of Rapana venosa (Gastropoda: Muricidae) in different biotopes along the Black Sea coast

Predation mechanisms of Rapana venosa (Gastropoda: Muricidae) in different biotopes along the Black Sea coast

Shell ornamentation as a likely exaptation: evidence from predatory drilling on Cenozoic bivalves

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