Larval metamorphosis of Phestilla spp. in response to waterborne cues from corals

Ritson‐Williams, Raphael; Shjegstad, Sonia M.; Paul, Valerie J.

doi:10.1016/j.jembe.2009.05.010

Cited by 20 publications

(8 citation statements)

References 34 publications

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“…A C C E P T E D M A N U S C R I P T settlement and metamorphosis in marine invertebrates (Pawlik, 1992), and have been associated as originating from conspecifics (Pearce and Scheibling, 1990a;Zhao and Qian, 2002), biofilms (Satuito et al, 1995;Zhao and Qian, 2002;Zhao et al, 2003), bacteria (Bonar et al, 1990;Fitt et al, 1990;Satuito et al, 1995), specific habitats (Pearce and Scheibling, 1990b;Swanson et al, 2004;Cob et al, 2010) and food sources (Steneck, 1982;Ritson-Williams et al, 2009). Whilst a number compounds have been isolated, including histamine from the red algae Delisea pulchra (Swanson et al, 2004), ammonia from bacteria (Coon et al, 1988;Bonar et al, 1990) and jacaranone from the red algae Delesseria sanguinea (Yvin et al, 1985), the identity of many of these naturally-derived cues remains unknown.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

et al. 2017

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Section: Accepted Manuscriptmentioning

confidence: 99%

Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

et al. 2017

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“…A lack of evidence of genetic structure within each lineage of C. violacea inside the Coral Triangle precludes physical isolation as an explanation for the observed divergence. Host specificity commonly results from preferential larval settlement (Ritson‐Williams, Shjegstad, & Paul, , , ). This genetic evidence combined with observations of adult preference for specific coral hosts (unpubl.…”

Section: Introductionmentioning

confidence: 99%

Genomic signatures of host‐associated divergence and adaptation in a coral‐eating snail, Coralliophila violacea (Kiener, 1836)

Simmonds

Fritts-Penniman

Cheng

et al. 2020

Ecology and Evolution

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The fluid nature of the ocean, combined with planktonic dispersal of marine larvae, lowers physical barriers to gene flow. However, divergence can still occur despite gene flow if strong selection acts on populations occupying different ecological niches. Here, we examined the population genomics of an ectoparasitic snail, Coralliophila violacea (Kiener 1836), that specializes on Porites corals in the Indo‐Pacific. Previous genetic analyses revealed two sympatric lineages associated with different coral hosts. In this study, we examined the mechanisms promoting and maintaining the snails’ adaptation to their coral hosts. Genome‐wide single nucleotide polymorphism (SNP) data from type II restriction site‐associated DNA (2b‐RAD) sequencing revealed two differentiated clusters of C. violacea that were largely concordant with coral host, consistent with previous genetic results. However, the presence of some admixed genotypes indicates gene flow from one lineage to the other. Combined, these results suggest that differentiation between host‐associated lineages of C. violacea is occurring in the face of ongoing gene flow, requiring strong selection. Indeed, 2.7% of all SNP loci were outlier loci (73/2,718), indicative of divergence with gene flow, driven by adaptation of each C. violacea lineage to their specific coral hosts.

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“…It is shown that water-borne cues could induce larval metamorphosis 29 of Phestilla 39 , Adalaria proxima 40 , and Balanus amphitrite 41 as well as larval settlement of oysters 42,43 . For Mytilus species, like M. coruscus 14 and M. galloprovincialis 37 , water-borne cues could induce larval settlement but not metamorphosis.…”

Section: Discussionmentioning

confidence: 99%

Monospecific Biofilms of Pseudoalteromonas Promote Larval Settlement and Metamorphosis of Mytilus coruscus

Peng

Liang

et al. 2020

Sci Rep

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As a stage of life cycle, larval settlement and metamorphosis are critical processes for persistence of many marine invertebrate populations. Bacterial biofilms (BFs) could induce larval settlement and metamorphosis. Pseudoalteromonas, a widely distributed genus of marine bacteria, showed inductive effects on several invertebrates. However, how Pseudoalteromonas BFs induce settlement and metamorphosis of Mytilus coruscus remains unclear. Pseudoalteromonas marina BFs with the highest inducing activity were further investigated to define inductive cues. Surface-bound products of P. marina BFs could induce larval settlement and metamorphosis. P. marina BFs treated with formalin, antibiotics, ultraviolet irradiation, heat and ethanol significantly reduced inductive effects and cell survival rates. The confocal laser scanning microscopy and the biovolume analysis showed the dominance of α-polysaccharides on P. marina BFs. Treatment of BFs with amylases, proteases and lipase led to the decrease of inducing activity, suggesting that inductive cues of P. marina BFs may comprise of molecular domains of polysaccharides, proteins, and lipids. Finding inductive cues of BFs could put forward further studies about the mechanism of larval settlement and metamorphosis of marine invertebrates. Most marine benthic invertebrates have a planktonic larval phase in their life cycle, which plays an important role in their survival and development 1,2. Competent larvae choose an acceptable substratum to settle and metamorphose to the benthic stage 3,4. This critical step is affected by abiotic factors (exogenous physical and chemical) and biotic factors (endogenous and exogenous) 2,4-6. Natural biofilms (BFs) which developed in the sea have a complex structure and are composed of many species of microorganisms 7. Natural BFs were proposed as one of biotic cues to stimulate larval settlement and metamorphosis 8-10. In benthic communities, bacteria exist in a form of a bacterial BF, which is a prevalent microbial lifestyle 11,12. Not only multispecies BFs but also monospecies BFs of bacteria can induce larval settlement and metamorphosis 13,14. It has been shown that BFs of Pseudoalteromonas, Vibrio, Shewanella and Tenacibaculum can induce larval settlement and metamorphosis 3,14-16. Pseudoalteromonas species are widely distributed at various marine environments and have high ecological significance 17,18. BFs of some Pseudoalteromonas species were reported as inducers 14,19,20 or inhibitors 21-24 of larval settlement. However, it is unclear whether varying species of Pseudoalteromonas show inducing or inhibiting activity to the mussel Mytilus coruscus. Bacteria in BFs were buried in extracellular polymeric substances (EPS) which are mostly secreted by bacterial strain itself 25. Biofilm's EPS include fatty acids, proteins, polysaccharides, nucleic acids and other biopolymers 25. EPS could be divided into the water-soluble part and water-insoluble part 25-28. The water-soluble and-insoluble cues were involved in larval settlement and meta...

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Larval metamorphosis of Phestilla spp. in response to waterborne cues from corals

Cited by 20 publications

References 34 publications

Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

Genomic signatures of host‐associated divergence and adaptation in a coral‐eating snail, Coralliophila violacea (Kiener, 1836)

Monospecific Biofilms of Pseudoalteromonas Promote Larval Settlement and Metamorphosis of Mytilus coruscus

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