Replenishment success linked to fluctuating asymmetry in larval fish

Lemberget, Tove; McCormick, Mark I.

doi:10.1007/s00442-008-1212-x

Cited by 40 publications

(36 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By comparing the levels of otolith FA in newly hatched larvae of P. amboinensis, to the otolith FA of Wsh at the end of the larval phase, Gagliano et al (2008) suggested that larvae with asymmetrical otoliths suVer signiWcantly higher rates of mortality during the larval phase. A similar link between otolith asymmetry and larval persistence has been found for a tropical lizardWsh (Lemberget and McCormick 2009). If asymmetry persists during crucial ontogenetic periods, such as the larval phase, and phenotypic selection penalizes asymmetrical individuals, the data presented herein suggest that hormonally mediated maternal eVects are likely to have important repercussions on annual recruitment variability and play a key role in shaping the dynamics of future Wsh populations.…”

Section: Discussionsupporting

confidence: 55%

Hormonally mediated maternal effects shape offspring survival potential in stressful environments

Gagliano

McCormick

2009

Oecologia

Self Cite

View full text Add to dashboard Cite

In most egg-laying vertebrates, maternal responses to stressful conditions are translated into the release of glucocorticoid hormones such as cortisol, which are then transmitted to their developing embryos. Although such maternally transmitted hormonal resources have been shown to influence or even interfere with the optimal developmental trajectories of offspring in many taxa, their influence on the dynamics of wild fish populations remains largely unexplored. Here, we examined the extent to which simulated hormonally mediated maternal effects influence the development and early survival of the coral reef damselfish, Pomacentrus amboinensis. Concentrations of cortisol in the eggs were manipulated within naturally occurring limits by immersion. We found that the proportion of embryos that delayed hatching when exposed to high levels of cortisol was considerably lower than in the other two treatments (low cortisol dose and control). High cortisol levels in P. amboinensis eggs resulted in increased egg mortality and greater asymmetry in hatchlings. For embryos that successfully hatched, individuals from the elevated cortisol treatments (especially low dose) survived longer after hatching. Although individuals that originated from eggs with elevated cortisol levels survived longer after hatching, they may not gain an overall survival advantage. Our results suggest that subtle increases in the allocation of maternally derived hormones, such as cortisol, to offspring are a direct way for stressed mothers to endow their young with an immediate survival advantage. We propose that this immediate benefit outweighs the developmental costs which may be expressed as reduced fitness at later life stages.

show abstract

Section: Discussionsupporting

confidence: 55%

Hormonally mediated maternal effects shape offspring survival potential in stressful environments

Gagliano

McCormick

2009

Oecologia

Self Cite

View full text Add to dashboard Cite

show abstract

“…Early life history traits, such as larval growth and size-at-settlement, vary in space and time and have been linked to settlement magnitude [14]–[17]. Larval encounter with particular water temperatures, water masses, or oceanographic features can influence the early life history traits of settlers [18]–[21].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Settling Coral Reef Fish Are Related to Recruitment Timing and Success

Rankin

Sponaugle

2014

PLoS ONE

View full text Add to dashboard Cite

Many marine populations exhibit high variability in the recruitment of young into the population. While environmental cycles and oceanography explain some patterns of replenishment, the role of other growth-related processes in influencing settlement and recruitment is less clear. Examination of a 65-mo. time series of recruitment of a common coral reef fish, Stegastes partitus, to the reefs of the upper Florida Keys revealed that during peak recruitment months, settlement stage larvae arriving during dark lunar phases grew faster as larvae and were larger at settlement compared to those settling during the light lunar phases. However, the strength and direction of early trait-mediated selective mortality also varied by settlement lunar phase such that the early life history traits of 2–4 week old recruit survivors that settled across the lunar cycle converged to more similar values. Similarly, within peak settlement periods, early life history traits of settling larvae and selective mortality of recruits varied by the magnitude of the settlement event: larvae settling in larger events had longer PLDs and consequently were larger at settlement than those settling in smaller pulses. Traits also varied by recruitment habitat: recruits surviving in live coral habitat (vs rubble) or areas with higher densities of adult conspecifics were those that were larger at settlement. Reef habitats, especially those with high densities of territorial conspecifics, are more challenging habitats for young fish to occupy and small settlers (due to lower larval growth and/or shorter PLDs) to these habitats have a lower chance of survival than they do in rubble habitats. Settling reef fish are not all equal and the time and location of settlement influences the likelihood that individuals will survive to contribute to the population.

show abstract

“…random deviations from perfect symmetry) in otoliths has become a popular tool with which to examine the effects of stress during the development of fish and a possible indicator of fitness (e.g. Lemberget & McCormick 2009, Palmer et al 2010 and references therein). Here, we provide strong evidence that right and left otoliths carry the same kind of information with regard to environmental and genetically-based variations.…”

Section: Otolith Shape Determinantsmentioning

confidence: 99%

Environmental and genetic determinant of otolith shape revealed by a non-indigenous tropical fish

Vignon¹,

Morat²

2010

Mar. Ecol. Prog. Ser.

215

154

View full text Add to dashboard Cite

Otolith morphometrics have been shown to provide a practical basis for stock discrimination and subsequent fisheries management. However, the determinants of otolith shape are not fully understood and analysis does not distinguish between genotype and environmentally induced differences. In this context, understanding how those 2 components act synergetically on the otolith shape is fundamental. The use of non-indigenous fish of multiple origins provides an interesting tool for evaluating the relative importance of genetic and environmental components in determining otolith shape. This paper investigates to what extent a dual regulation (i.e. genetic and environmental) of the otolith shape from an introduced coral reef snapper (Lutjanus kasmira) exists, in order to determine how each component specifically acts on otolith morphology. Using geometric morphometrics, we discriminated between native and introduced range as well as between individuals belonging to different lineages (i.e. origins) but growing under the same environmental conditions (individuals cohabiting within the same shoals in the wild). Here we show that both genetic and environmental influences play a substantial role in determining the shape of the otolith. More specifically, while environment induces an overall change in otolith shape, genetically induced changes locally affect otolith shape. In addition, data suggest that both nuclear and mitochondrial components act synergetically. This information is fundamental if otolith shape is to be used as an effective tool for management of fisheries resources in the future. KEY WORDS: Fisheries management · Stocks · Geometric morphometrics · Lutjinidae · French Polynesia · Hawaiian archipelago · Evolutionary Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 411: [231][232][233][234][235][236][237][238][239][240][241] 2010 (Cadrin 2000, Begg et al. 2005, Campana 2005 because it provides a practical basis for stock separation that is useful in fisheries management (Begg & Waldman 1999).It is currently recognised that otolith growth and shape occurs under dual regulation: overall shape is regulated genetically, but there is a strong variability related to environmental factors. A number of authors have suggested that otolith shape is genetically constrained, species specific and reflects phylogenetic relationships (Lombarte & Castellón 1991, Lombarte & Lleonart 1993, Reichenbacher et al. 2009). However, otoliths present variation among conspecific individuals, being mainly influenced by sex, age, year class and stock (Castonguay et al. 1991, Begg & Brown 2000, Monteiro et al. 2005 as well as by local environmental conditions or factors such as depth, water temperature and substrate type (Lombarte & Lleonart 1993, Gagliano & McCormick 2004, Mérigot et al. 2007, Hüssy 2008. Although several studies have indicated that otolith shape differences between stocks are likely to be caused by both environmental and genetic influences, it is unclear to ...

show abstract

Replenishment success linked to fluctuating asymmetry in larval fish

Cited by 40 publications

References 65 publications

Hormonally mediated maternal effects shape offspring survival potential in stressful environments

Hormonally mediated maternal effects shape offspring survival potential in stressful environments

Characteristics of Settling Coral Reef Fish Are Related to Recruitment Timing and Success

Environmental and genetic determinant of otolith shape revealed by a non-indigenous tropical fish

Contact Info

Product

Resources

About