Limited wind-driven dispersal of intertidal mussel larvae: in situ evidence from the plankton and the spread of the invasive species Mytilus galloprovincialis in South Africa

McQuaid, Christopher D.; Phillips, Tracey E.

doi:10.3354/meps201211

Cited by 207 publications

(164 citation statements)

References 59 publications

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“…This would intuitively suggest that the larvae have the ability to disperse over large distances and colonize areas far away from their maternal colonies. However, there have been studies indicating recruitment to be both localized on a scale of metres to occurring at large distances on a scale of kilometres away from maternal populations (Booth and Brosnan 1995;McQuaid and Phillips 2000;Pineda et al 2010). This investigation revealed a clearly higher species number and abundance within established assemblages at site U in comparison to site W. This leads to a similar pattern among new recruits, with higher numbers of species and individuals at site U.…”

Section: Discussionsupporting

confidence: 58%

Species pool structure explains patterns of Antarctic rock-encrusting organism recruitment

et al. 2017

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Understanding the population dynamics of benthic communities is impossible without understanding the processes related to their initial development, including recruitment. In polar areas, encrusting organisms, such as bryozoans, polychaetes, sponges and ascidians, are amongst some of the most species-rich and abundant groups of macrofaunal organisms, yet knowledge about their ecology is far from being complete. In this study, by investigating established encrusting assemblages and recruitment onto experimental substrate, we examine the level of similarity between adult populations and newly recruited assemblages in the polar realm. This study was conducted during the austral summer of 2010-2011 in Maritime Antarctica at King George Island (62°S, 58°W) at two locations contrasting in their biological and physical conditions. Despite the small distance (*3 km) between the two study sites, the local species pools (species composition, numerical abundance) differed significantly and had a great influence on the observed recruitment pattern. The species composition of new recruits overlapped with that of nearby assemblages at all examined locations. The dominance structure was also identical, with bryozoans being the major component of these assemblages. The numbers of species and individuals in the newly recruited communities and local resident assemblages were also strongly correlated. The obtained results suggest that the recruitment of encrusting fauna in the Antarctic can be very localized and occurs in close vicinity to adult populations.

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Section: Discussionsupporting

confidence: 58%

Species pool structure explains patterns of Antarctic rock-encrusting organism recruitment

et al. 2017

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“…Therefore, the localized effects of predation may 13 be less influential in the regulation of communities (Palmer et al, 1996). Recent studies suggest, 14 however, that the scales of larval transport and dispersal of many coastal species may be smaller 15 than originally thought (McQuaid and Phillips, 2000;Pineda et al, 2007 for discussion and 16 references), suggesting that predation of local larvae may have a role in the dynamics of 17…”

Section: Larval Predationmentioning

confidence: 99%

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

180

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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“…The supply of planktonic larvae in a particular region depends on the proximity of larvae sources and hydrodynamic transport toward the region (Levin 2006) and, to a certain extent, also on larval swimming behavior (Knights and others 2006). As the swimming capacity of larvae is limited relative to water currents, the spatial connectivity of the mussel populations, and therefore the degree of population synchrony, will largely depend on regional geomorphology and currents during the larval stage (Young and others 1996;McQuaid and Phillips 2000;Gilg and Hilbish 2003;Watson and others 2010).…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Spatial Dynamics of Intertidal Mussel (Mytilus edulis L.) Bed Coverage in the German and Dutch Wadden Sea

et al. 2014

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Intertidal blue mussel beds are important for the functioning and community composition of coastal ecosystems. Modeling spatial dynamics of intertidal mussel beds is complicated because suitable habitat is spatially heterogeneously distributed and recruitment and loss are hard to predict. To get insight into the main determinants of dispersion, growth and loss of intertidal mussel beds, we analyzed spatial distributions and growth patterns in the German and Dutch Wadden Sea. We considered yearly distributions of adult intertidal mussel beds from 36 connected tidal basins between 1999 and 2010 and for the period 1968-1976. We found that in both periods the highest coverage of tidal flats by mussel beds occurs in the sheltered basins in the southern Wadden Sea. We used a stochastic growth model to investigate the effects of density dependence, winter temperature and storminess on changes in mussel bed coverage between 1999 and 2010. In contrast to expectation, we found no evidence that cold winters consistently induced events of synchronous population growth, nor did we find strong evidence for increased removal of adult mussel beds after stormy winter seasons. However, we did find synchronic growth within groups of proximate tidal basins and that synchrony between distant groups is mainly low or negative. Because the boundaries between synchronic groups are located near river mouths and in areas lacking suitable mussel bed habitat, we suggest that the metapopulation is under the control of larval dispersal conditions. Our study demonstrates the importance of moving from simple habitat suitability models to models that incorporate metapopulation processes to

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Limited wind-driven dispersal of intertidal mussel larvae: in situ evidence from the plankton and the spread of the invasive species Mytilus galloprovincialis in South Africa

Cited by 207 publications

References 59 publications

Species pool structure explains patterns of Antarctic rock-encrusting organism recruitment

Species pool structure explains patterns of Antarctic rock-encrusting organism recruitment

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

Large-Scale Spatial Dynamics of Intertidal Mussel (Mytilus edulis L.) Bed Coverage in the German and Dutch Wadden Sea

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