The mitochondrial genome of the endangered Spiny Butterfly Ray
            <i>Gymnura altavela</i>
            (Linnaeus 1758) (Myliobatiformes: Gymnuridae) provides insights into cryptic lineages

Cady, Tabitha; Bemis, Katherine E.; Baeza, J. Antonio

doi:10.1080/24701394.2023.2251577

Mitochondrial DNA Part A

2021

DOI: 10.1080/24701394.2023.2251577

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The mitochondrial genome of the endangered Spiny Butterfly Ray Gymnura altavela (Linnaeus 1758) (Myliobatiformes: Gymnuridae) provides insights into cryptic lineages

Tabitha Cady,

Katherine E. Bemis,

J. Antonio Baeza

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Cited by 3 publications

References 45 publications

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eDNA metabarcoding reveals a rich but threatened and declining elasmobranch community in West Africa’s largest marine protected area, the Banc d’Arguin

de la Hoz Schilling,

Jabado,

Veríssimo

et al. 2024

Conserv Genet

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Elasmobranchs (sharks and rays) are the most threatened marine vertebrates, particularly in tropical and subtropical areas. Their population status is often poorly understood due to insufficient information. Despite reportedly harbouring critical elasmobranch habitats, the Banc d’Arguin National Park (PNBA) in Mauritania lacks comprehensive and updated information on the diversity of elasmobranch species in the area. We developed a baseline inventory based on morphological and molecular identification and metabarcoding. DNA barcoding of tissue samples from elasmobranch processing sites and freshly sampled specimens was used to build a genetic reference database of local elasmobranch species. The richness and diversity of species in the PNBA were described via metabarcoding of seawater eDNA samples using an elasmobranch-specific assay and our reference database. We detected 27 species, including 12 new species records for the PNBA. We further uncover potentially undescribed species of Gymnura and Torpedo, while taxonomic corrections are noted for previously reported species. In particular, the reportedly abundant Mustelus mustelus was absent from tissue and eDNA samples, while M. punctulatus was detected instead. Taxa that have anecdotally become regionally extinct or rare (e.g., sawfishes, wedgefishes, lemon sharks) were not detected, highlighting local species diversity shifts within the last few decades. Results show that 67.9% of elasmobranch species in the PNBA are threatened with extinction according to the IUCN Red List of Threatened Species. This study emphasises the importance of taxonomic identification in support of species management and provides a baseline to inform future studies and conservation measures to avoid further species losses.

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eDNA metabarcoding reveals a rich but threatened and declining elasmobranch community in West Africa’s largest marine protected area, the Banc d’Arguin

de la Hoz Schilling,

Jabado,

Veríssimo

et al. 2024

Conserv Genet

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The complete mitochondrial genome of the imperiled Bullnose ray Myliobatis freminvillei (Myliobatiformes: Myliobatidae) with comments on its phylogenetic position and claims of diversifying selection affecting protein coding genes in a closely related species

Fee,

Zabransky,

Burgess

et al. 2025

Gene

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Life‐history of the spiny butterfly ray, Gymnura altavela (Chondrichthyes: Myliobatiformes), kept under human care in a marine aquarium

Teixeira‐Leite,

Marcante Santana,

Franco Valle

et al. 2024

Journal of Fish Biology

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The Rio de Janeiro Marine Aquarium (AquaRio) is the first to successfully maintain and reproduce the spiny butterfly ray (Gymnura altavela), providing unique information about the species' biology. Seven rays were kept in captivity between 2018 and 2023, two captured on the southeastern coast of Brazil and five born in the aquarium. The applied abiotic conditions and nutrition allowed for the survival, growth, and reproduction of these individuals. Growth parameters (asymptotic disk width—DW∞ and growth coefficient—k) were estimated based on the von Bertalanffy model using the Fabens method for males and females separately. The best models estimated DW∞ = 106.47 cm and k = 0.396 for males and DW∞ = 172.2 cm and k = 0.190 for females. Sexual dimorphism was corroborated, with females reaching larger sizes and presenting slower growth rates than males. The estimated k values were higher than those estimated for rays of similar size to G. altavela in the natural environment, probably due to the constant water temperature (around 25.5°C), food abundance, low population density, reduced predation rates, and high water quality in the captive environment. A comparison of the captivity findings with other studies on G. altavela age and growth in the Atlantic and Mediterranean indicates a broad phenotypic plasticity regarding growth. Three G. altavela reproductions were recorded, with size at birth appearing to be a key factor for pup's survival. Behavioral pattern observations associated with reproduction are also described, encompassing chasing and copulation, whereas the species’ internal morphology is described through coelomic cavity ultrasound scanning.

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The mitochondrial genome of the endangered Spiny Butterfly Ray Gymnura altavela (Linnaeus 1758) (Myliobatiformes: Gymnuridae) provides insights into cryptic lineages

Cited by 3 publications

References 45 publications

eDNA metabarcoding reveals a rich but threatened and declining elasmobranch community in West Africa’s largest marine protected area, the Banc d’Arguin

eDNA metabarcoding reveals a rich but threatened and declining elasmobranch community in West Africa’s largest marine protected area, the Banc d’Arguin

The complete mitochondrial genome of the imperiled Bullnose ray Myliobatis freminvillei (Myliobatiformes: Myliobatidae) with comments on its phylogenetic position and claims of diversifying selection affecting protein coding genes in a closely related species

Life‐history of the spiny butterfly ray, Gymnura altavela (Chondrichthyes: Myliobatiformes), kept under human care in a marine aquarium

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