Color change in the Sargassum crab, Portunus sayi: response to diel illumination cycle and background albedo

Russell, Brandon; Dierssen, Heidi M.

doi:10.1007/s00227-018-3287-1

Cited by 7 publications

(5 citation statements)

References 59 publications

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“…Crustacean showed an ability to change coloration in response to photoperiod, which may play roles including photoprotection and enhancing camouflage in a unique marine environment (Russell and Dierssen, 2018). In our study, one interesting finding was that the body color of L. vannamei became darker after dark treatment for an 8-week feeding trail, which may be related to the decreased gene expression of crustacyanin subunit C (from transcriptome data).…”

Section: Discussionmentioning

confidence: 57%

Influence of Light/Dark Cycles on Body Color, Hepatopancreas Metabolism, and Intestinal Microbiota Homeostasis in Litopenaeus vannamei

Dai

Tao

et al. 2021

Front. Mar. Sci.

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In aquatic animals, the light/dark cycle acts as an important biological factor that influences the entire life cycle. Until present, evidence regarding the regulation of physiological metabolic process under different light/dark cycles is limited in Litopenaeus vannamei. In this study, we mainly investigated the effects of different light/dark cycles (12 h light/12 h dark, 0 h light/24 h dark) on the hepatopancreas metabolism and intestinal microbiota homeostasis in L. vannamei using multiomics techniques. One interesting finding was that the body color of L. vannamei became darker after dark treatment for 8 weeks. Further hepatopancreas transcriptome analysis identified down-regulated genes involved in regulating nutrition metabolism, body-color formation, diurnal rhythm, immune function, hormone levels, and posttranslational modifications. The intestinal microbiota analysis showed that dark treatment-induced alterations in intestinal bacterial abundances in L. vannamei, such as decreased (P < 0.05) relative abundance of Formosa, Demequina, Lutimonas and increased (P < 0.05) relative abundance of Ruegeria, Vibrio, Actibacter, Roseovarius, Ilumatobacter, and Kriegella at the genus level. The microbiota functional analysis demonstrated that the dark treatment mainly increased susceptibility of pathogens, decreased nutrition metabolism, and influenced circadian rhythm. This study indicated for the first time that constant darkness treatment darkened the body color and altered hepatopancreas metabolism and intestinal microbiota homeostasis in L. vannamei, which might give potential clues for improving the productive capacities by changing light/dark cycles in shrimp farming.

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Section: Discussionmentioning

confidence: 57%

Influence of Light/Dark Cycles on Body Color, Hepatopancreas Metabolism, and Intestinal Microbiota Homeostasis in Litopenaeus vannamei

Dai

Tao

et al. 2021

Front. Mar. Sci.

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“…In broader-scaled studies involving remote sensing and valorization, the high biomass and scope of study make the identification of sargasso either trivial or unfeasible [25,[35][36][37]. However, the lack of morphotype identification in sargasso-related studies should not be overlooked given the possibility of minute differences in physiology and tissue content scaling up to oceanographic distribution and biomass valorization with varying sargasso composition.…”

Section: Discussionmentioning

confidence: 99%

“…This result is consistent with Fidai et al (2020), where there was a strong research emphasis on remote sensing of sargasso in the Atlantic Ocean Region. Sargasso in ecological studies was framed as either with association of another species of biota [36][37][38] or framed to assess the impacts of sargasso-brown tides on local biotic communities [39][40][41]. These are impacts that could incur socioeconomic costs and loss to local communities that are dependent on their local coastal areas [42].…”

Section: Discussionmentioning

confidence: 99%

“…Even in remote sensing, a research theme that had the highest amount of publications, there are still limitations that need to be overcome. Although satellite images can provide an overview of offshore quantities, it is still difficult to acquire high-resolution images, since fragments smaller than 2 m in a 1 km pixel are not easily detectable [35,36,56]. There are also reports that sargasso can sink and remain under the surface of the water [57], which may indicate that the amounts in the high seas can be underrepresented.…”

Section: Discussionmentioning

confidence: 99%

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Integrative Literature Analysis of Holopelagic Sargassum (Sargasso) in the Western Atlantic (2011–2022): Status, Trends, and Gaps

Arita,

Iporac,

Bally

et al. 2023

Phycology

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Since 2011, the Caribbean and Gulf of Mexico coasts have been receiving massive influxes of holopelagic sargasso algae composed of Sargassum natans and Sargassum fluitans. This phenomenon has been causing several negative local impacts, such as ecological disturbances and socioeconomic and health concerns of communities in impacted areas. This work aimed to assess the status of scientific knowledge related to pelagic sargasso, including trends, emphases, and gaps. A literature review was conducted on publications and reports from 2011 to 2022, of which 251 articles were collected based on an inclusion–exclusion criteria. Aspects of each article were quantified, including location, description of sargasso, the type of study, and research theme. A region-wide research emphasis on ecology, remote sensing, and valorization was observed. Areas first affected by the inundations composed a higher percentage of sargasso studies than other locations, and the distribution of studies varied among subregions. Topics requiring further investigation include sargasso’s growth and mortality rates and drivers, taxonomic and physiologic differences among morphotypes, and real-time forecasting resolution at local scales both on and offshore. This research emphasized efforts from the scientific community on research and mitigation initiatives.

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“…Moreover, there are various selective pressures inducing colour morphs. In the context of pattern matching, body colouration sometimes varies considerably depending on the substrate colour, the condition of environments, and season, and function as camouflage from visual predators (Russell & Dierssen, 2018; Green et al ., 2019). In terms of mating success, conspicuous colouration increases the detectability and attractivity for the counter sex, because such colouration often is originally reflected by the nutritional and/or maturity condition of individuals (Kodric-Brown, 1989; Guilford & Dawkins, 1991; Hill, 1999).…”

Section: Introductionmentioning

confidence: 99%

Colour variation of the intertidal hermit crabClibanarius virescensconsidering growth stage, geographic area in the Indo–West Pacific Ocean, and molecular phylogeny

et al. 2020

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Members of Clibanarius virescens show considerable intraspecific colour variation, including colouration of the second/third pereopods (green/white) and the dactyls of the second/third pereopods (with or without dark bands/patches). However, factors inducing these colour variations have not yet been elucidated. Here, we investigated the occurrence of colour variation in this species with particular emphasis on change of colouration associated with growth stage and region in specimens from tropical/subtropical to warm temperate areas in the Indo–West Pacific, including evidence from molecular phylogeny based on the cytochrome c oxidase subunit I (COI). We have, then, clarified that the colouration on the pereopod dactyls gradually changed from solid colour (yellow/white) to having dark-coloured area(s) or transverse band(s) as a result of the growth stage. The frequency of occurrence of the solid colour dactyls was higher than those of other colour types in tropical regions. Our results also indicated that the white ambulatory leg type was the colouration type that was frequently seen in juvenile stages. However, significant genetic differences were not detected between each colouration determined by molecular analysis of samples from 14 localities in the Indo-West Pacific region; in contrast, two genetically differentiated regional populations (North Australia; Phuket, Thailand; and Lombok, Indonesia) were detected. The present study, therefore, emphasizes the necessity for further study on the colour variation of marine animals focusing on growth stages and regional differences, with molecular data to facilitate the research on adaptation and/or speciation, especially in geographically widely distributed species.

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Color change in the Sargassum crab, Portunus sayi: response to diel illumination cycle and background albedo

Cited by 7 publications

References 59 publications

Influence of Light/Dark Cycles on Body Color, Hepatopancreas Metabolism, and Intestinal Microbiota Homeostasis in Litopenaeus vannamei

Influence of Light/Dark Cycles on Body Color, Hepatopancreas Metabolism, and Intestinal Microbiota Homeostasis in Litopenaeus vannamei

Integrative Literature Analysis of Holopelagic Sargassum (Sargasso) in the Western Atlantic (2011–2022): Status, Trends, and Gaps

Colour variation of the intertidal hermit crabClibanarius virescensconsidering growth stage, geographic area in the Indo–West Pacific Ocean, and molecular phylogeny

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