Corals in Healthy Populations Produce More Larvae Per Unit Cover

Hartmann, Aaron C.; Marhaver, Kristen L.; Vermeij, Mark J. A.

doi:10.1111/conl.12410

Cited by 27 publications

(27 citation statements)

References 40 publications

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“…POI was reported as stable in Montipora capitata eggs from Hawaii, as lipid reserves and antioxidant defense were equal between high light and shaded reefs despite adult plasticity (Padilla‐Gamiño et al, ). Contrastingly, variable POI was displayed in multiple coral species with higher lipid reserves allocated to larvae from healthier coral populations with higher benthic cover in Curacao (Hartmann, Marhaver, & Vermeij, ).…”

Section: Discussionmentioning

confidence: 99%

“…where fed females did not significantly increase the number of offspring clutches but instead significantly increased lipid energy provisioning to each larva (Samhouri, 2017). At the other end of the feeding scale, damselfish (Acanthochromis polycanthus) on a minimal diet significantly reduced clutch size but not POI (egg size) compared to fish on an average diet (Donelson, Munday, McCormick, Pankhurst, & Pankhurst, 2010 (Hartmann, Marhaver, & Vermeij, 2018).…”

Section: Effect Of Diet In Parents and Planulaementioning

confidence: 96%

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Feeding increases the number of offspring but decreases parental investment of Red Sea coral Stylophora pistillata

Bellworthy

Spangenberg

Fine

2019

Ecology and Evolution

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Successful reproductive output and recruitment is crucial to coral persistence and recovery following anthropogenic stress. Feeding is known to alter coral physiology and increase resilience to bleaching.The goal of the study was to address the knowledge gap of the influence of feeding on reproductive output and offspring phenotype.Colonies of Stylophora pistillata from the Northern Gulf of Aqaba (Red Sea) were fed an Artemia diet or unfed for 5 months during gametogenesis, fertilization, and brooding. In addition, time to settlement and mortality of planulae were assessed at water temperatures ranging from winter temperature (22°C) to three degrees above average peak summer temperature (31°C). A range of physiological parameters was measured in parents and offspring.In brooding parents, feeding significantly increased protein concentration and more than tripled the number of released planulae. Planulae from unfed colonies had higher chlorophyll per symbiont concentration and concomitantly higher photosynthetic efficiency compared to planulae from fed parents. In settlement assays, planulae showed a similar thermal resistance as known for this Red Sea adult population. Mortality was greater in planulae from unfed parents at ambient and 3°C above ambient temperature despite higher per offspring investment in terms of total fatty acid content. Fatty acid profiles and relative abundances were generally conserved between different fed and unfed colonies but planulae were enriched in monounsaturated fatty acids relative to adults, that is, 16:1, 18:1, 20:1, 22:1, and 24:1 isomers.Ultimately the availability of zooplankton could influence population physiology and recruitment in corals.

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Section: Discussionmentioning

confidence: 99%

Section: Effect Of Diet In Parents and Planulaementioning

confidence: 96%

Feeding increases the number of offspring but decreases parental investment of Red Sea coral Stylophora pistillata

Bellworthy

Spangenberg

Fine

2019

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…Total lipids were extracted from larvae using the Bligh and Dyer () method. Lipid classes were quantified via thin layer chromatography with flame ionization detection on an Iatroscan TLC‐FID MK‐5 (Iatron Laboratories, Inc., Japan) following the methods of Hartmann, Marhaver, and Vermeij (; see the Supporting Information for more details). A two‐factor ANOVA was used to determine differences in lipid depletion among treatments based on the change in lipid content over the 48‐hr experiment for each lipid class, with photosymbiont status and light exposure as the independent variables.…”

Section: Methodsmentioning

confidence: 99%

Acquisition of obligate mutualist symbionts during the larval stage is not beneficial for a coral host

et al. 2019

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Theory suggests that the direct transmission of beneficial endosymbionts (mutualists) from parents to offspring (vertical transmission) in animal hosts is advantageous and evolutionarily stable, yet many host species instead acquire their symbionts from the environment (horizontal acquisition). An outstanding question in marine biology is why some scleractinian corals do not provision their eggs and larvae with the endosymbiotic dinoflagellates that are necessary for a juvenile's ultimate survival. We tested whether the acquisition of photosynthetic endosymbionts (family Symbiodiniaceae) during the planktonic larval stage was advantageous, as is widely assumed, in the ecologically important and threatened Caribbean reef‐building coral Orbicella faveolata. Following larval acquisition, similar changes occurred in host energetic lipid use and gene expression regardless of whether their symbionts were photosynthesizing, suggesting the symbionts did not provide the energetic benefit characteristic of the mutualism in adults. Larvae that acquired photosymbionts isolated from conspecific adults on their natal reef exhibited a reduction in swimming, which may interfere with their ability to find suitable settlement substrate, and also a decrease in survival. Larvae exposed to two cultured algal species did not exhibit differences in survival, but decreased their swimming activity in response to one species. We conclude that acquiring photosymbionts during the larval stage confers no advantages and can in fact be disadvantageous to this coral host. The timing of symbiont acquisition appears to be a critical component of a host's life history strategy and overall reproductive fitness, and this timing itself appears to be under selective pressure.

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“…In tropical waters, the reproductive success of coral populations on degraded reefs is likely low (Gilmour et al 2013, Hartmann et al 2018, thereby decreasing their ability to support self-seeding of the natal reef, and increasing the reliance on distantly-sourced larvae to support coral recruitment. However, climate change-induced seawater warming probably will reduce larval connectivity between populations by accelerating larval development and thus shortening the duration of the pelagic larval stage (O' Connor et al 2007, Hoegh-Guldberg & Bruno 2010, which would reduce the capacity to support recruitment through distantly-sourced larvae.…”

Section: Mechanisms Of Latitudinal Trends: Supply Connectivity and mentioning

confidence: 99%

Global biogeography of coral recruitment: tropical decline and subtropical increase

Price¹,

Muko²,

Legendre³

et al. 2019

Mar. Ecol. Prog. Ser.

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Despite widespread climate-driven reductions of coral cover on tropical reefs, little attention has been paid to the possibility that changes in the geographic distribution of coral recruitment could facilitate beneficial responses to the changing climate through latitudinal range shifts. To address this possibility, we compiled a global database of normalized densities of coral recruits on settlement tiles (corals m −2) deployed from 1974 to 2012, and used the data therein to test for latitudinal range shifts in the distribution of coral recruits. In total, 92 studies provided 1253 records of coral recruitment, with 77% origi nating from settlement tiles immersed for 3−24 mo, herein defined as long-immersion tiles (LITs); the limited temporal and geographic coverage of data from short-immersion tiles (SITs; deployed for < 3 mo) made them less suitable for the present purpose. The results from LITs show de clines in coral recruitment, on a global scale (i.e. 82% from 1974 to 2012) and throughout the tropics (85% reduction at < 20°latitude), and in creases in the sub-tropics (78% increase at > 20°latitude). These trends indicate that a global decline in coral recruitment has occurred since 1974, and the persistent reduction in the densities of recruits in equatorial latitudes, coupled with increased densities in subtropical latitudes, suggests that coral recruitment may be shifting poleward.

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Corals in Healthy Populations Produce More Larvae Per Unit Cover

Cited by 27 publications

References 40 publications

Feeding increases the number of offspring but decreases parental investment of Red Sea coral Stylophora pistillata

Feeding increases the number of offspring but decreases parental investment of Red Sea coral Stylophora pistillata

Acquisition of obligate mutualist symbionts during the larval stage is not beneficial for a coral host

Global biogeography of coral recruitment: tropical decline and subtropical increase

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