Rejection of unsuitable substrata as a potential driver of aggregated settlement in the barnacle Balanus improvisus

Berntsson, Kent; Jonsson, Per R.; Larsson, Åke; Holdt, Susan Løvstad

doi:10.3354/meps275199

Cited by 58 publications

(31 citation statements)

References 55 publications

(96 reference statements)

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“…In this sense, small-scale habitat selection potentially determines local population distribution, structure and dynamics. Although the relevance of localised processes to regional or metapopulation ecology is debatable, empirical support for the influence of small-scale settlement behaviour on metre-and geographical-scale ecological processes does exist (Strathmann et al 1981, Berntsson et al 2004). Finally, mussel and macroalgal beds have been interpreted as alternative stable states of the same ecosystem (Petraitis & Dudgeon 2004).…”

Section: Methodological and Ecological Implicationsmentioning

confidence: 99%

Fine-scale ontogenetic shifts in settlement behaviour of mussels: changing responses to biofilm and conspecific settler presence in Mytilus galloprovincialis and Perna perna

Meden¹,

Porri²,

McQuaid³

et al. 2010

Mar. Ecol. Prog. Ser.

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Larval settlement is critical to the establishment and maintenance of marine communities and is influenced by exogenous (bio-physical) and endogenous (behavioural or physiological) factors. Consequently, an understanding of settlement behaviour is specific to the bio-physical conditions and/or ontogenetic stage(s) examined. For intertidal organisms, the presence of settlementinducing or -inhibiting cues is well known, including various effects of biofilm and conspecifics. Studies of marine mussels, however, have incorporated little ontogenetic resolution and have almost exclusively been limited to investigation of larval-adult interactions. The present work examines behavioural responses of primary and secondary settlers of indigenous (Perna perna) and invasive (Mytilus galloprovincialis) mussels to biofilm and settler presence on artificial collectors at 2 sites in South Africa. Specifically testing for larva-settler and settler-settler interactions, this approach allowed for replication of site and species. It was hypothesised that biofilm and conspecific settlers would increase primary and secondary settlement of both species alike. Settler densities at one site were too low to detect treatment effects. At the other site, however, primary settlers of both species were significantly attracted to filmed rather than bare collectors (ANOVA, P. perna, p < 0.01; M. galloprovincialis, p < 0.05) and also avoided conspecific settlers, while secondary P. perna settlers preferred the combination of biofilm and conspecifics to other treatments (ANOVA, p < 0.05). The findings represent an important ontogenetic shift in settlement behaviour with broad methodological and ecological implications, including possible explanations for natural patterns of habitat use by primary settlers, and the inhibition of switching between alternative stable states.

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Section: Methodological and Ecological Implicationsmentioning

confidence: 99%

Fine-scale ontogenetic shifts in settlement behaviour of mussels: changing responses to biofilm and conspecific settler presence in Mytilus galloprovincialis and Perna perna

Meden¹,

Porri²,

McQuaid³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…Nearshore circulation patterns will need to be understood in greater detail before we can predict the delivery of larvae directly into the intertidal zone. Second, studies have shown that the settlement of larvae once they reach the intertidal zone is determined by larval behavior (e.g., Berntsson et al 2004). Understanding how barnacle larvae choose a location to settle will improve our ability to predict where settlement will occur after the larvae are delivered near their habitat.…”

Section: Discussionmentioning

confidence: 99%

“…behavior (Raimondi 1988), predation (Gaines and Roughgarden 1987), or the suitability of the local habitat (Berntsson et al 2004). …”

Section: Methodsmentioning

confidence: 99%

Dispersal of barnacle larvae along the central California coast: A modeling study

Pfeiffer-Herbert

McManus

Raimondi

et al. 2007

Limnology & Oceanography

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To investigate the biological and physical mechanisms affecting larval dispersal, we embedded a model of Balanus glandula larval development and behavior into physical circulation fields of waters along the central California coast. Physical circulation fields were generated by a three-dimensional ocean circulation model with a horizontal resolution of 1.5 km and 20 topography-following layers in the vertical. The ocean circulation model was forced by air-sea fluxes derived from a mesoscale atmospheric model and assimilated temperature and salinity data from the Autonomous Ocean Sampling Network II experiment. An ecosystem model that calculated chlorophyll a (a proxy for larval food concentration) was also coupled to the ocean circulation model. The coupled model of larval development, larval behavior, food concentration, and physical circulation was used to run simulations of larval dispersal. Simulation results predicted a greater return of larvae to the nearshore waters with relaxation circulation patterns than with upwelling. More larvae were supplied to the coast north of Monterey Bay than to the south, and larvae that successfully returned to the nearshore waters generally had limited dispersal distances. These modeling results agree with previous observations of B. glandula population dynamics in central California.Many intertidal marine species have a planktonic larval phase, and populations in the intertidal zone are largely shaped by the supply of these larvae. An understanding of the pathways of larval dispersal would provide many of the answers to questions about how intertidal populations are connected. However, direct observations of larvae dispersing in coastal waters are very sparse, because of the difficulty of making these observations. An alternative to direct observation is to predict the paths of dispersing larvae with model simulations. In this study, we model the dispersal of Balanus glandula larvae and predict dispersal pathways in coastal waters of central California.To model larval dispersal it is first necessary to understand the biology of the larvae. B. glandula is

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“…Field and laboratory research 13 supports that settlement of barnacles and mussels intensifies where there is less area of suitable 14 substrate (Bertness et al, 1992;Pineda, 1994a;Osman and Whitlatch, 1995a;Hunt and 15 Scheibling, 1996;Pineda and Caswell, 1997;Berntsson et al, 2004;Rilov et al, 2008). No 16 evidence of intensification was found, however, where adult density was low and settlement 17 sparse (Jeffery, 2000).…”

mentioning

confidence: 91%

Causes of decoupling between larval supply and settlement and consequences for understanding recruitment and population connectivity

Pineda

Porri

Starczak

et al. 2010

Journal of Experimental Marine Biology and Ecology

181

100

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Marine broadcast spawners have two-phase life cycles, with pelagic larvae and benthic adults. 2 Larval supply and settlement link these two phases and are crucial for the persistence of marine 3 populations. Mainly due to the complexity in sampling larval supply accurately, many 4 researchers use settlement as a proxy for larval supply. Larval supply is a constraining variable 5 for settlement because, without larval supply, there is no settlement. Larval supply and 6 settlement may not be well correlated, however, and settlement may not consistently estimate 7 larval supply. 8This paper explores the argument that larval supply (i.e., larval abundance near settlement sites) 9 may not relate linearly to settlement. We review the relationship between larval supply and 10 settlement, from estimates and biases in larval supply sampling, to non-behavioral and 11 behavioral components, including small-scale hydrodynamics, competency, gregarious behavior, 12 intensification of settlement, lunar periodicity, predation and cannibalism. Physical and structural 13 processes coupled with behavior, such as small-scale hydrodynamics and intensification of 14 settlement, sometimes result in under-or overestimation of larval supply, where it is predicted 15 from a linear relationship with settlement. Although settlement is a function of larval supply, 16 spatial and temporal processes interact with larval behavior to distort the relationship between 17 larval supply and settlement, and when these distortions act consistently in time and space, they 18 cause biased estimates of larval supply from settlement data. 19Most of the examples discussed here suggest that behavior is the main source of the decoupling 20 between larval supply and settlement because larval behavior affects the vertical distribution of 21 3 larvae, the response of larvae to hydrodynamics, intensification of settlement, gregariousness, 1 predation and cannibalism. Thus, larval behavior seems to limit broad generalizations on the 2 regulation of settlement by larval supply. Knowledge of the relationship is further hindered by 3 the lack of a well founded theoretical relationship between the two variables. 4The larval supply-settlement transition may have strong general consequences for population 5 connectivity, since larval supply is a result of larval transport, and settlement constrains 6 recruitment. Thus, measuring larval supply and settlement effectively allows more accurate 7 quantification and understanding of larval transport, recruitment and population connectivity. 8 9 4

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Rejection of unsuitable substrata as a potential driver of aggregated settlement in the barnacle Balanus improvisus

Cited by 58 publications

References 55 publications

Fine-scale ontogenetic shifts in settlement behaviour of mussels: changing responses to biofilm and conspecific settler presence in Mytilus galloprovincialis and Perna perna

Fine-scale ontogenetic shifts in settlement behaviour of mussels: changing responses to biofilm and conspecific settler presence in Mytilus galloprovincialis and Perna perna

Dispersal of barnacle larvae along the central California coast: A modeling study

Causes of decoupling between larval supply and settlement and consequences for understanding recruitment and population connectivity

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