Novel insights into coastal site affinity and habitat connectivity of a benthic stingray with implications for management

Elston, Chantel; Cowley, Paul D.; Murray, Taryn S.; Parkinson, Matthew C.

doi:10.1007/s10531-022-02494-7

Cited by 7 publications

(2 citation statements)

References 50 publications

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“…The capability of moving long distances has also been shown for undulatory batoids such as R. alba , as demonstrated by an individual tagged in the LSMP that travelled 43 km away (Sousa et al, 2019). Other examples include adult Dipturus intermedius , which can travel at least 120 km (Thorburn et al, 2021), and Dasyatis chrysonota , which can regularly move up to 200 km (Elston et al, 2023). Although the protection of adults remains an important contributor to the conservation of elasmobranchs (Kinney & Simpfendorfer, 2009), an advantage of conservation efforts that focus on the less mobile life stages of a species is that these can be optimized as immature individuals may be more likely to remain in more restricted areas (Cerutti‐Pereyra et al, 2014; Kinney & Simpfendorfer, 2009).…”

Section: Discussionmentioning

confidence: 99%

Horizontal and vertical movements of the critically endangered Rostroraja alba in a coastal marine protected area

Kraft,

Winkler,

Abecasis

2024

Aquatic Conservation

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Elasmobranchs are slow‐growing marine predators whose populations have declined due to their susceptibility to overfishing, especially affecting species of large size. Rostroraja alba is a large skate that is currently classified as critically endangered. To address the effects of overfishing and promote the recovery of marine species and habitats, marine protected areas (MPAs) are a commonly implemented management strategy. A critical aspect of their success is using information on species' movement patterns; however, this is frequently not assessed for elasmobranchs. In this study, acoustic telemetry was used to monitor 30 R. alba in the Professor Luís Saldanha Marine Park (Portugal) to assess their long‐term movements in the context of a coastal MPA and to evaluate the contribution of this kind of spatial management to the conservation of this species. Immature individuals were more frequently captured than adults, which postulates this area as a potential nursery. The average residency was moderate and relatively consistent throughout the year, as was area use. No marked size or sex‐based differences in movement were noted. Individuals were more active and occurred in shallower waters at night and twilight, and occasional quick vertical movements into the water column, isolated or in sequence, were also noted. In general, the LSMP seems to offer stable protection to immature R. alba, with no strong seasonal variation. These results provide relevant input for adaptive management measures of this and other similar MPAs and highlight the contribution of these efforts to the protection of nursery areas.

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Section: Discussionmentioning

confidence: 99%

Horizontal and vertical movements of the critically endangered Rostroraja alba in a coastal marine protected area

Kraft,

Winkler,

Abecasis

2024

Aquatic Conservation

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“…[14][15][16][17][18] Daily activity patterns for T. lymma are largely unknown but are likely influenced by environmental cues such as photoperiod, temperature, and tide, with an increased activity level around dusk, similar to other batoids. [19][20][21] As with other batoids, T. lymma is also expected to be active throughout the day, meaning that the visual perception of the colors of their skin should vary significantly due to changing light conditions. Unlike the relatively uniform and muted body colors of many oceanic stingrays, the ribbontail stingray has a conspicuous color pattern, with bright electric blue coloration, accenting its dorsal body skin color [12] ; our field studies show substantial color variation in both the blue and non-blue regions, with the latter ranging from greenish-to yellowish-brown to even orange dorsal body skin (Figure 1a-d).…”

Section: Introductionmentioning

confidence: 99%

Ribbontail Stingray Skin Employs a Core–Shell Photonic Glass Ultrastructure to Make Blue Structural Color

Surapaneni,

Blumer,

Tadayon

et al. 2024

Advanced Optical Materials

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Structural blue colors are common in animals, with the tissue nanostructures and material systems that produce them—especially bright blues—typically based on highly ordered nano‐architectures. In this study, we describe an unusually bright and angle‐independent structural blue from the skin of ribbontail stingray, arising from a more disordered array of scattering elements with a previously undescribed core–shell ultrastructure, involving nano‐vesicles enclosing guanine nano‐platelets. We show that this skin architecture functions as an intracellular photonic glass, coherently scattering blue, while broadband absorption from closely associated melanophores obviates the low color saturation typical for photonic glasses. Our characterization of skin ultrastructure and color in a stingray demonstrates how disordered systems can be harnessed to produce brilliant hues while illustrating that the capacity for guanine‐based colors likely arose extremely early in vertebrate evolution. Moreover, the material‐structure‐function associations underlying ribbontail stingray coloration, employing two distinct photonic phenomena, illustrate how the evolution of nanoscale architectures can have profound effects at much larger size scales (e.g., in visual ecology and communication), and provide fundamental guidelines for color‐saturated manmade photonic glasses.

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A multi-scale tracking approach for conserving large migratory fish in an open coastal environment

Edwards,

Buijse,

Winter

et al. 2024

Estuarine, Coastal and Shelf Science

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Novel insights into coastal site affinity and habitat connectivity of a benthic stingray with implications for management

Cited by 7 publications

References 50 publications

Horizontal and vertical movements of the critically endangered Rostroraja alba in a coastal marine protected area

Horizontal and vertical movements of the critically endangered Rostroraja alba in a coastal marine protected area

Ribbontail Stingray Skin Employs a Core–Shell Photonic Glass Ultrastructure to Make Blue Structural Color

A multi-scale tracking approach for conserving large migratory fish in an open coastal environment

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