Interactive effects of light and substrate colour on the recruitment of marine invertebrates on artificial materials

Siddik, Aboobucker; Satheesh, Sathianeson

doi:10.1007/s42974-020-00037-0

Cited by 9 publications

(4 citation statements)

References 57 publications

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“…This is exemplified by the continuous ALAN illumination in ocean pens that is common practice for species of salmonids (McConnell et al, 2010). This continuous illumination attracts a multitude of invertebrate species that aggregate in the illuminated area, increasing the available food resources for fish in the pens (Delupis and Rotondo, 1988;Jeḱely et al, 2008;McConnell et al, 2010;McLeod and Costello, 2017;Siddik and Satheesh, 2021). However, the resounding effects that ALAN has on the circadian biology of these farmed fish is largely understudied and it is reasonable to hypothesize that there will be long-term effects on behavior and physiology due to chronic circadian clock disruption.…”

Section: The Effects Of Alan On Marine Animals In Coastal Environmentsmentioning

confidence: 99%

The effects of artificial light at night (ALAN) on the circadian biology of marine animals

Stanton,

Cowart

2024

Front. Mar. Sci.

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The effects of anthropogenic sources of light on the circadian biology of marine animals are largely unexplored at the molecular and cellular level. Given that light is a major driver of circadian rhythms at the behavioral, physiological, cellular, and even molecular levels, it is important to consider the effects that anthropogenic light, especially at night, has on aquatic species. With the expanding data generated from circadian clock research, it is surprising that these techniques have not been applied more frequently to better understand how artificial light affects animal circadian rhythms. Circadian research has been limited to behavioral and physiological observations in wild marine animals rather than a cellular and molecular understanding due to the logistical constraints. While there are some benefits to using artificial light at night (ALAN), there have also been many studies reporting physiological and behavioral consequences in response to exposure to ALAN. Here, the benefits and consequences of using ALAN in the marine environment are reviewed. Furthermore, perspectives on research limitations and future research directions are discussed. Taken together, this is an important area in which more information is required to translate our understanding of circadian biology into better practices to promote the health and welfare of marine animals.

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Section: The Effects Of Alan On Marine Animals In Coastal Environmentsmentioning

confidence: 99%

The effects of artificial light at night (ALAN) on the circadian biology of marine animals

Stanton,

Cowart

2024

Front. Mar. Sci.

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“…39−41 These observations have often been rationalized using Attachment Point Theory, which states that fouling organisms generally prefer substrates with surface features or roughness on a length scale that maximizes the settler-substrate contact area, that is, on a length scale close to the organism's body width. 42,43 Some studies have also reported settlement preferences based on substrate color 22,44 or wettability. 39,45 However, like studies of surface roughness, these studies have focused on extrinsic and/or bulk properties of the substrate rather than the intrinsic properties of the underlying material.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Although not yet routinely applied by coral restoration practitioners, there are also many physical cues that can influence the behavior of marine larvae. These include factors such as the specific sounds, light regimes, and hydrodynamic conditions of reefs, as well as the properties of natural or artificial substrate materials. − In particular, many studies have noted that coral larvae and other fouling organisms display settlement preferences based on substrate surface topography. − These observations have often been rationalized using Attachment Point Theory, which states that fouling organisms generally prefer substrates with surface features or roughness on a length scale that maximizes the settler-substrate contact area, that is, on a length scale close to the organism’s body width. , Some studies have also reported settlement preferences based on substrate color , or wettability. , However, like studies of surface roughness, these studies have focused on extrinsic and/or bulk properties of the substrate rather than the intrinsic properties of the underlying material.…”

Section: Introductionmentioning

confidence: 99%

Composite Substrates Reveal Inorganic Material Cues for Coral Larval Settlement

Levenstein

Marhaver

Quinlan

et al. 2022

ACS Sustainable Chem. Eng.

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The widespread loss of stony reef-building coral populations has been compounded by the low settlement and survival of coral juveniles. To rebuild coral communities, restoration practitioners have developed workflows to settle vulnerable coral larvae in the laboratory and outplant settled juveniles back to natural and artificial reefs. These workflows often make use of natural biochemical settlement cues, which are presented to swimming larvae to induce settlement. This paper establishes the potential for inorganic cues to complement these known biochemical effects. Settlement substrates were fabricated from calcium carbonate, a material present naturally on reefs, and modified with additives including sands, glasses, and alkaline earth carbonates. Experiments with larvae of two Caribbean coral species revealed additive-specific settlement preferences that were independent of bulk surface properties such as mean roughness and wettability. Instead, analyses of the substrates suggest that settling coral larvae can detect localized topographical features more than an order of magnitude smaller than their body width and can sense and positively respond to soluble inorganic minerals such as silica (SiO 2 ) and strontianite (SrCO 3 ). These findings open a new area of research in coral reef restoration, in which composite substrates can be designed with a combination of natural organic and inorganic additives to increase larval settlement and perhaps also improve post-settlement growth, mineralization, and defense.

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“…[39][40][41] These observations have often been rationalized using Attachment Point Theory, which states that fouling organisms generally prefer substrates with surface features or roughness on a length scale that maximizes the settler-substrate contact area, i.e., on a length scale close to the organism's body width. [42][43] Some studies have also reported settlement preferences based on substrate color 22,44 or wettability. 39,45 However, like studies of surface roughness, these studies have focused on extrinsic and/or bulk (average) properties of the substrate rather than the intrinsic properties of the underlying material.…”

Section: Introductionmentioning

confidence: 99%

Engineered Substrates Reveal Species-Specific Inorganic Cues for Coral Larval Settlement

Levenstein

Marhaver

Quinlan

et al. 2021

Preprint

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The widespread loss of stony reef-building coral populations has been compounded by pervasive recruitment failure, i.e., the low or absent settlement and survival of coral juveniles. To combat global coral reef stressors and rebuild coral communities, restoration practitioners have developed workflows to rear and settle vulnerable coral larvae in the laboratory and subsequently outplant settled juveniles back to natural and artificial reefs. These workflows often make use of the natural biochemical settlement cues present in crustose coralline algae (CCA), which can be presented to swimming larvae as extracts, fragments, or live algal sheets to induce settlement. In this work, we investigated the potential for inorganic chemical cues to complement these known biochemical effects. We designed settlement substrates made from lime mortar (CaCO3) and varied their composition with the use of synthetic and mineral additives, including sands, glasses, and alkaline earth carbonates. In experiments with larvae of two Caribbean coral species, Acropora palmata (elkhorn coral) and Diploria labyrinthiformis (grooved brain coral), we saw additive-specific settlement preferences (>10-fold settlement increase) in the absence of any external biochemical cues. Interestingly, these settlement trends were independent of bulk surface properties such as surface roughness and wettability. Instead, our results suggest that not only can settling coral larvae sense and positively respond to soluble inorganic materials, but that they can also detect localized topographical features more than an order of magnitude smaller than their body width. Our findings open a new area of research in coral reef restoration, in which engineered substrates can be designed with a combination of organic and inorganic additives to increase larval settlement, and perhaps also improve post-settlement growth, mineralization, and defense.

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Interactive effects of light and substrate colour on the recruitment of marine invertebrates on artificial materials

Cited by 9 publications

References 57 publications

The effects of artificial light at night (ALAN) on the circadian biology of marine animals

The effects of artificial light at night (ALAN) on the circadian biology of marine animals

Composite Substrates Reveal Inorganic Material Cues for Coral Larval Settlement

Engineered Substrates Reveal Species-Specific Inorganic Cues for Coral Larval Settlement

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