Effect of experience on predatory behaviour of dogwhelks

Rovero, Francesco; Hughes, Roger N.; Chelazzi, Guido

doi:10.1006/anbe.1999.1102

Cited by 39 publications

(32 citation statements)

References 29 publications

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“…Higher encounter rates with a type of prey could increase predator experience, resulting in greater handling efficiency (Rovero et al 1999). Therefore, to understand if past field experience with prey affects the foraging behavior of Stramonita haemastoma, we compared feeding preferences and handling time of the 2 prey species by whelks with low (PC: < 2% coverage) and high Isognomon bicolor encounter rates (PF: 40% coverage).…”

Section: Methodsmentioning

confidence: 99%

“…Prey size ranged between 10 and 25 mm, and consumed prey was replaced to maintain equal prey availability. Because of the lack of statistical difference between proportions of consumed prey in the 2 S. haemastoma experiments (PF: χ 2 = 0.1, df = 1, p = 0.75; PC: χ 2 = 0.06, df = 1, p = 0.81), data were pooled for further analyses.Higher encounter rates with a type of prey could increase predator experience, resulting in greater handling efficiency (Rovero et al 1999). Therefore, to understand if past field experience with prey affects the foraging behavior of Stramonita haemastoma, we compared feeding preferences and handling time of the 2 prey species by whelks with low (PC: < 2% coverage) and high Isognomon bicolor encounter rates (PF: 40% coverage).…”

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confidence: 99%

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Predator–prey interactions in a bioinvasion scenario: differential predation by native predators on two exotic rocky intertidal bivalves

López¹,

Coutinho²,

Ferreira³

et al. 2010

Mar. Ecol. Prog. Ser.

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The mechanisms determining the strength of interactions between non-indigenous and native species in the invaded environment are of great interest to both ecologists and managers. On a Brazilian rocky shore, we experimentally measured predation intensity and prey preference of native predators on 2 exotic bivalves, Perna perna (which has been present for centuries) and Isognomon bicolor (introduced ca. 20 yr ago). Overall, predation was more intense on P. perna than on I. bicolor. Furthermore, P. perna was preyed upon more intensively by benthic crawling predators (whelks and, possibly, crabs), while larger, more mobile predators (fish and birds) were less selective. In addition, the larger, more abundant whelk Stramonita haemastoma selectively preyed on P. perna (for which handling time was shorter), while another whelk (Trachypollia nodulosa) preferred I. bicolor, although handling time was longer. Different shell morphologies of the 2 exotic prey and resource partitioning between the whelks may explain S. haemastoma and T. nodulosa feeding preferences, respectively. The thicker valves of I. bicolor compared to those of P. perna reduced the drilling or chipping efficiency by whelks. Although these prey species belong to the same functional group, differences in their shell characteristics could entail different mechanical constraints to predators. Therefore, native predators in the study system may prefer P. perna over I. bicolor because they are still adapting their foraging skills to handle the more recent invader, I. bicolor. KEY WORDS: Exotic prey · Novel interactions · Predation intensity · Prey preference · Intertidal · Subtropical rocky shores · Brazil Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 403: [101][102][103][104][105][106][107][108][109][110][111][112] 2010 the structuring of benthic communities on rocky shores. Prey preference of these predators can be influenced by many factors such as prey size, energy content, handling time, availability and the past experience of the predator (Pyke et al. 1977, Hughes & Dunkin 1984, Fairweather 1988, Etter 1996.Multiple species have invaded many hard substrate habitats over time; therefore, native species have been exposed to different invaders for different periods of time (e.g. Wasson et al. 2005, Eastwood et al. 2007. A number of complex novel interactions could be established subsequent to invasion due to the arrangement of new native-exotic or exotic-exotic contact (Dudas et al. 2005, Grosholz 2005, Matern & Brown 2005, MacDonald et al. 2007, Pratt & Grason 2007. On the one hand, non-indigenous species are expected to lose some or all native co-evolved enemies. This enemyrelease hypothesis is one of many possible explanations for the success of invasive species in a new area (Colautti et al. 2004). On the other hand, non-indigenous species could find new enemies in invaded areas that could control their populations (Parker & Hay 2005, Parker et al. 2006.Invasive species can have important...

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Predator–prey interactions in a bioinvasion scenario: differential predation by native predators on two exotic rocky intertidal bivalves

López¹,

Coutinho²,

Ferreira³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…Drilling rate in muricid whelks was estimated to be 0.29 to 0.36 mm d -1 (Carriker & Van Zandt 1972, Hughes & Dunkin 1984, Rovero et al 1999a. Applying this rate to the 2 whelks we studied means that it would take almost one and a half days to drill a complete hole in the thinnest part of the shell of Brachidontes pharaonis (0.41 mm).…”

Section: Feeding Behavior Adaptationsmentioning

confidence: 95%

“…1 in Roller et al 1984). Alternatively, S. haemastoma may inject a relaxant into the mussel's mantle cavity through the tiny hole that it has rasped with its radula, affecting the adductor muscle and causing the valves to gape (see also Whittaker 1960, Garton & Stickle 1980, Roller et al 1984, Rovero et al 1999a. The relaxant may be strong enough to penetrate through natural gaps in the margins of the shell of small mussels (McGraw & Gunter 1972), opening the mussel without drilling.…”

Section: Feeding Behavior Adaptationsmentioning

confidence: 99%

“…Many predatory whelks drill the shell of their prey (Radwin & Wells 1968, Carriker 1981. The presence, position and size of the holes reveal the feeding techniques of these whelks, and indicate possible mechanisms for reducing preyhandling time (Hughes & Dunkin 1984, Rovero et al 1999a. Predators employing less efficient predation techniques may have longer prey-handling time and so must avoid habitats with strong wave action.…”

Section: Introductionmentioning

confidence: 99%

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Life on the edge: do biomechanical and behavioral adaptations to wave-exposure correlate with habitat partitioning in predatory whelks?

Rilov¹,

Benayahu²,

Gasith³

2004

Mar. Ecol. Prog. Ser.

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The rocky littoral is a highly stressed but species rich environment in which adaptive trade-offs underlie the specialization that permits habitat partitioning by closely-related species. Habitat partitioning by prey species is generally attributed to differential tolerances to physiological stresses and competition for resources. Partitioning by predators is, however, less understood and also mainly related to thermal tolerance. We test the hypothesis that differential biomechanical and behavioral adaptations to wave action can result in habitat partitioning of mobile predators using 2 Mediterranean whelks. Stramonita haemastoma is found mainly at wave-exposed habitats on lower midlittoral or shallow (1 to 3 m) subtidal rocks. By contrast, Hexaplex trunculus is found only subtidally in more quiescent littoral environments (shallow bays and lagoons or deeper in wave-exposed sites). Morphologically, S. haemastoma is squatter than H. trunculus and the ratio of its foot surface area to the maximum projected surface area of its shell is 35% higher, making S. haemastoma less prone to dislodgment by waves. Mechanically, at least a 2-fold higher force (12 N) is required to dislodge S. haemastoma from the substrate, probably due to its larger foot, because tenacity per foot area was similar between species. The feeding technique and foraging behavior of S. haemastoma is also adapted to life in high-energy environments. Higher feeding rates and much shorter prey handling time compared to H. trunculus allow this species shorter foraging bouts that reduce the risk of dislodgment and increase predation success in wave-exposed areas. H. trunculus thrives in low-flow habitats where food density is low compared to shallow subtidal rocks. This is compensated for by a broader diet than S. haemastoma, feeding on any available food item, including conspecifics, and by reducing adhesion when not feeding, thus saving energy. S. haemastoma is more adapted to survive desiccation conditions than H. trunculus, which may exclude the latter from intertidal habitats. Our findings suggest that habitat partitioning between the whelks is maintained mainly by a 'distinct preferences' mechanism that might be relevant for other benthic predatory species.

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Transmission of parental care behavior in African striped mice, Rhabdomys Pumilio

Rymer

Pillay

2011

J. Exp. Zool.

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The expression of behavior, including parental care behavior, is influenced by complex interactions of the genes of an organism and the prevailing environmental conditions. Previously, we showed that the development of paternal, but not maternal, care in the African striped mouse, Rhabdomys pumilio, has a significant nongenetic maternal component. Here, we investigate the genetic component of parental care behavior from parents to offspring. We first measured the duration of parental care behavior of mothers and fathers every second day for 11 days postnatally. Subsequently, one son and one daughter from each of these litters were paired with unrelated mates when they were adults and their parental care behavior scored. Using regression models, we then compared parental care behavior of parents and their adult offspring. The transmission of parental care behavior from striped mouse fathers to sons and from mothers to both sons and daughters did not indicate a genetic component. Instead, we found a patrilineal genetic component for parental care in daughters. The reason for this unusual pattern of inheritance is not known, but this finding complements that of our other studies, showing that the expression of maternal care behavior in adult daughters is also not nongenetically influenced by their mothers. We suggest that, although females are constrained to provide maternal care in different social contexts, maternal care behavior may be influenced genetically by the father.

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Effect of experience on predatory behaviour of dogwhelks

Cited by 39 publications

References 29 publications

Predator–prey interactions in a bioinvasion scenario: differential predation by native predators on two exotic rocky intertidal bivalves

Predator–prey interactions in a bioinvasion scenario: differential predation by native predators on two exotic rocky intertidal bivalves

Life on the edge: do biomechanical and behavioral adaptations to wave-exposure correlate with habitat partitioning in predatory whelks?

Transmission of parental care behavior in African striped mice, Rhabdomys Pumilio

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