Pigmentation abnormality in the blotched round ray Urotrygon asterias (Myliobatiformes: Urotrygonidae): first case of partial xanthism within the family
DOI:
https://doi.org/10.15517/nv81th80Keywords:
malpigmentación; aberración cromática; raya redonda; Centroamérica; anomalía xantocrómica.Abstract
Introduction: Malpigmentation or pigment disorders can result from either a deficiency or an excess of pigments and have been reported in a wide variety of fish taxa. Color abnormalities are rare among elasmobranchs. Among nearly 1 250 known species, only 22 cases of malpigmentations as albinism and leucism, have been reported, most involving sharks and rarely batoids. Xanthochromism is a rare pigmentation disorder characterized by a yellow-orange coloration caused by multiple factors. This condition has been scarcely reported in elasmobranchs, with only seven known cases, five of them in batoids.
Objectives: Here, we present the first record of xanthochromism in the blotched round ray Urotrygon asterias, and the first within the family Urotrygonidae.
Methods: One juvenile specimen was captured two times during a monitoring program at Playa Manzanillo, El Jobo, Guanacaste, Costa Rica, and photographic identification confirmed it was the same individual. Additionally, morphometric measurements of the individual were taken to assess whether it had grown.
Results: The recapture of this specimen indicates that xanthochromism does not necessarily compromise short-term survival. Potential causes of the condition include genetic mutations, diet, gestation disorders, or environmental factors, such as contamination. Playa Manzanillo exhibits evidence of anthropogenic impacts, including fishing waste and pollutants, which may influence local ichthyofauna health.
Conclusions: This finding expands the understanding of pigmentation anomalies in batoids and highlights the need for further research to assess the environmental drivers of morphological abnormalities, including pigmentation, in elasmobranchs. Such studies are crucial for evaluating the ecological and conservation implications of these disorders in the Ester Tropical Pacific.
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References
Angus, R. A., & Blanchard, P. D. (1991). Genetic basis of the gold phenotype in sailfin mollies. Journal of Heredity, 82(5), 425–428. https://doi.org/10.1093/oxfordjournals.jhered.a111118
Argüello-Rojas, S. Angulo, A., Valverde-Cantillo, V., & Fallas-Madrigal, D. F. (2026). [Unpublished raw data on deformities and ocular abnormalities in ray species]. Equipo Tora Carey and Oceanic Alliance.
Ari, C. (2014). Rapid coloration changes of manta rays (Mobulidae). Biological Journal of the Linnean Society, 113(1), 180–193. https://doi.org/10.1111/bij.12321
Arronte, J. C., Antolínez, A., Bañón, R., Rodríguez-Gutiérrez, J., Ortíz, J. J., & Martínez, J. M. (2022). First recorded case of leucism in the velvet belly lantern shark Etmopterus spinax (Squaliformes: Etmopteridae). Journal of Applied Ichthyology, 38(4), 455–461. https://doi.org/10.1111/jai.14326
Anislado-Tolentino, V., Medina-Lerma, M. G., & Del Moral-Flores, L. F. (2016). Primer registro de albinismo en la raya redonda enana, Urotrygon nana (Urotrygonidae: Elasmobranchii), en el Pacífico oriental. Revista Ciencias Marinas y Costeras, 8(2), 93–100. https://doi.org/10.15359/revmar.8-2.6
Akat, E., Yenmiş, M., Pombal, M. A., Molist, P., Megías, M., Arman, S., Veselỳ, M., Anderson, R., & Ayaz, D. (2022). Comparison of vertebrate skin structure at class level: A review. The Anatomical Record, 305(12), 3543–3608.
Ball, R. E., Jones, C. S., Lynghammar, A., Noble, L. R., & Griffiths, A. M. (2013). The first confirmed cases of full albinism in rajid species. Journal of Fish Biology, 82(4), 1433–1440. https://doi.org/10.1111/JFB.12072
Bañón, R., Cerdeira, D., & De Carlos, A. (2020). New records of abnormal pigmentation in fishes from the Atlantic European waters. Cybium, 44(2), 161–163. https://doi.org/10.26028/cybium/2020-442-007
Bañón, R., Quigley, D. T., Cerdeira, D., & de Carlos, A. (2023). A review of xanthochromic malpigmentation in wild marine fishes with the first case in Diplodus puntazzo (Walbaum, 1792) (Spariformes: Sparidae). Cybium, 47(2), 197–205. https://doi.org/10.26028/cybium/2023-017
Barhoumi, S., Messaoudi, I., Tmim, D. E. L. I., Khaled, S. A. Ï. D., & Kerkeni, A. (2009). Cadmium bioaccumulation in three benthic fish species, Salaria basilisca, Zosterisessor ophiocephalus and Solea vulgaris collected from the Gulf of Gabes in Tunisia. Journal of Environmental Sciences, 21(7), 980–984. https://doi.org/10.1016/S1001-0742(08)62371-2
Bigman, J.S., J.D.S. Knuckey & D.A. Ebert (2015): Color aberrations in Chondrichthyan fishes: first records in the genus Bathyraja (Chondrichthyes: Rajiformes: Arhynchobatidae). Marine Biodiversity, 46(3), 579–587. https://doi.org/10.1007/s12526-015-0403-z
Booth, C. L. (1990). Evolutionary significance of ontogenetic colour change in animals. Biological Journal of the Linnean Society, 40(2), 125–163. https://doi.org/10.1111/j.1095-8312.1990.tb01973.x
Burton, D. (2010). Flatfish (Pleuronectiformes) chromatic biology. Reviews in Fish Biology and Fisheries, 20(1), 31–46. https://doi.org/10.1007/s11160-009-9119-0
Colihueque, N. (2010). Genetics of salmonid skin pigmentation: clues and prospects for improving the external appearance of farmed salmonids. Reviews in Fish Biology and Fisheries, 20, 71–86. https://doi.org/10.1007/s11160-009-9121-6
Cortés, J., & Joyce, F. (2020). BioMar-ACG: A successful partnership to inventory and promulgate marine biodiversity. Biotropica, 52(6), 1103–1106. https://doi.org/10.1111/btp.12841
Dahl, R. B., Sigsgaard, E. E., Mwangi, G., Thomsen, P. F., Jørgensen, R. D., Torquato, F. de O., Olsen, L., & Møller, P. R. (2019). The Sandy Zebra Shark: A New Color Morph of the Zebra Shark Stegostoma tigrinum, with a Redescription of the Species and a Revision of Its Nomenclature. Ichthyology & Herpetology, 107(3), 524–541. https://doi.org/10.1643/CG-18-115
Ehemann, N. R., García-Rodríguez, F. J., & de La Cruz-Agüero, J. (2022). Morphological abnormalities in seven American round ray specimens: A review of America’s batomorph anomalies. Journal of Fish Diseases, 45(3), 395–409. https://doi.org/10.1111/JFD.13567
Ehemann, N. R., García-Rodríguez, F. J., Pequeño, G., Thiel, R., & De La Cruz-Agüero, J. (2021). Historical records of the blotched stingray Urotrygon chilensis (Urotrygonidae: Myliobatiformes) yield insight into species distribution: the importance of natural history collections to questions of zoogeography. Systematics and Biodiversity, 19(3), 252–260. https://doi.org/10.1080/14772000.2020.1868607
Ehemann, N. R., Hernández, S., Siccha-Ramírez, R., García-Rodríguez, F. J., & de La Cruz-Agüero, J. (2024). Alike but genetically divergent: The resurrection of Urotrygon asterias (Jordan & Gilbert, 1883) from its closest relatives, the Munda and the Blotched stingray. Journal of Fish Biology, 105(4), 1044–1059. https://doi.org/10.1111/JFB.15864
Elgendy, M. Y., Ali, S. E., Abbas, W. T., Algammal, A. M., & Abdelsalam, M. (2023). The role of marine pollution on the emergence of fish bacterial diseases. Chemosphere, 344, 140366. https://doi.org/10.1016/j.chemosphere.2023.140366
González-Ramos, M. S., Santos-Moreno, A., Rosas-Alquicira, E. F., & Fuentes-Mascorro, G. (2017). Validation of photo-identification as a mark–recapture method in the spotted eagle ray Aetobatus narinari. Journal of Fish Biology, 90(3), 1021–1030. https://doi.org/10.1111/jfb.13215Digital Object Identifier (DOI)
Hauser- Davis, R. A., Barbosa- Filho, M. L., Pereira, L. H. S. S., Lopes, C. A., Moreira, S. C., Rocha, R. C., Saint’Pierre, T. D., Baldassin, P., & Siciliano, S. (2020). First record of a morphologically abnormal and highly metal-contaminated Spotback Skate Atlantoraja castelnaui (Rajiformes: Arhynchobatidae) from southeastern Rio de Janeiro, Brazil. Journal of Threatened Taxa. 12, 16510–16520. https://doi.org/10.11609/jott.5903.12.11.16510-16520
Hodge, J. R., Santini, F., & Wainwright, P. C. (2020). Colour dimorphism in labrid fishes as an adaptation to life on coral reefs. Proceedings of the Royal Society B: Biological Sciences, 287(1923), 20200167. https://doi.org/10.1098/rspb.2020.0167
Jezierska, B., Ługowska, K., & Witeska, M. (2009). The effects of heavy metals on embryonic development of fish (a review). Fish Physiology and Biochemistry, 35(4), 625–640. https://doi.org/10.1007/S10695-008-9284-4
Jiang, Y., Zhang, S., Xu, J., Feng, J., Mahboob, S., Al-Ghanim, K. A., Sun, X., & Xu, P. (2014). Comparative transcriptome analysis reveals the genetic basis of skin color variation in common carp. PloS one, 9(9), e108200. https://doi.org/10.1371/journal.pone.0108200
Jawad, L. A., Al-Busaidi, H. K., Al-Mamary, D., Al-Rassadi, A., & Al-Mamry, J. M. (2017). Malpigmentation in Diagramma pictum and Pardachirus marmoratus collected from the Arabian Sea Coasts of Oman. International Journal of Marine Science, 7(30), 292–296. https://doi.org/10.5376/ijms.2017.07.0030
Kijewska, A., Wiecaszek, B., Kalamarz-Kubiak, H., Szulc, J., & Sobecka, E. (2012). Skin structure studies and molecular identification of the Atlantic cod Gadus morhua L. of unique golden pigmentation from the Svalbard Bank. Journal of Applied Ichthyology, 28(1), 60–65. https://doi.org/10.1111/J.1439-0426.2011.01919.X
Kanagusuku, K., Romero, M., Ramírez-Amaro, S., Kanagusuku, K., Romero, M., & Ramírez-Amaro, S. (2020). Multiple morphological abnormalities in a blue shark Prionace glauca (Linnaeus, 1758) embryo from the Peruvian coast, southeast Pacific. Latin American Journal of Aquatic Research, 48(1), 141–145. https://doi.org/10.3856/vol48-issue1-fulltext-2317
Kanika, N. H., Ke, J., Mandal, R. N., Wang, J., & Wang, C. (2023). Comparative transcriptome and metabolome analyses of wild and mutant Oujiang color common carp through editing SCARB1 gene by CRISPR/Cas technology. Aquaculture, 577, 739901. https://doi.org/10.1016/j.aquaculture.2023.739901
Last, P., Naylor, G., Séret, B., White, W., de Carvalho, M., & Stehmann, M. (Eds.). (2016). Rays of the World. CSIRO publishing.
Macías-Cuyare, M., Guzmán, G. R. B., & Arauz-Naranjo, D. (2025). First record case of free-living xanthism in the nurse shark Ginglymostoma cirratum (Bonnaterre, 1788) from Caribbean Sea. Marine Biodiversity, 55(4), 1–4. https://doi.org/10.1007/s12526-025-01558-5
McKinley, A. C., Dafforn, K. A., Taylor, M. D., & Johnston, E. L. (2011). High levels of sediment contamination have little influence on estuarine beach fish communities. PLOS ONE, 6(10), e26353. https://doi.org/10.1371/journal.pone.0026353
McIvor, A. J., Williams, C. T., Rich, W. A., Knochel, A. M., Burns, N. M., & Berumen, M. L. (2024). Mark-recapture validates the use of photo-identification for the widely distributed blue-spotted ribbontail ray, Taeniura lymma. Scientific Reports, 14(1), 17432. https://doi.org/10.1038/s41598-024-68302-0
Meese, E. N., & Lowe, C. G. (2019). Finding a Resting Place: How Environmental Conditions Influence the Habitat Selection of Resting Batoids. Bulletin of the Southern California Academy of Sciences, 118(2), 87–101. https://doi.org/10.3160/0038-3872-118.2.87
Miyazawa, S., Okamoto, M., & Kondo, S. (2010). Blending of animal colour patterns by hybridization. Nature Communications, 1, 66. https://doi.org/10.1038/ncomms1071
Orlov, A. M., Rabazanov, N. I., & Nikiforov, A. I. (2022). Ontogenic Changes in Coloration of Rare Deepwater Richardson’s Ray Bathyraja richardsoni (Arhynchobatidae, Rajiformes, Chondrichthyes). Russian Journal of Developmental Biology, 53(1), 27–40. https://doi.org/10.1134/S1062360422010052
Prazdnikov, D. V., & Shkil, F. N. (2023). The role of thyroid hormones in the development of coloration of two species of Neotropical cichlids. Journal of Experimental Biology, 226(14), jeb245710. https://doi.org/10.1242/jeb.245710
Quigley, D. T. G., de Carlos, A., Barros-Garcia, D., & MacGabhann, D. (2018a). Albinism and leucism in blonde rays (Raja brachyura Lafont, 1871) (Elasmobranchii: Batoidea) from the Irish Sea. Bulletin of the European Association of Fish Pathologists, 38(2), 79–88.
Quigley, D. T. G., de Carlos, A., Barros-Garcia, D., & MacGabhann, D. (2018b). Albino xanthochromic Homelyn Ray Raja montagui Fowler, 1910 (Elasmobranchii: Batoidea) from the Irish Sea. Bulletin of the European Association of Fish Pathologists, 38(4), 109–114.
Quigley, D. T. G., Lord, R., MacGabhann, D., & Flannery, K. (2017). First records of xanthochromism in three-bearded rockling Gaidropsarus vulgaris (Cloquet 1824) and pollack Pollachius pollachius (Linnaeus 1758). Journal of Applied Ichthyology, 33(6), 1208–1210. https://doi.org/10.1111/jai.13456
Reynoldson, T. B. (1987). Interactions between sediment contaminants and benthic organisms. Hydrobiologia, 149(1), 53–66. https://doi.org/10.1007/BF00048646
Ribeiro- Prado, C. C. R., Oddone, M. C., Gonzalez, M. M. B., de Amorim, A. F., & Capapé, C. (2008). Morphological abnormalities in skates and rays (Chondrichthyes) from off southeastern Brazil. Arquivos de Ciências do Mar, 41, 21–28. https://doi.org/10.32360/acmar.v41i2.6058
Rodrigues, A., Shkola, W., & Rangel, B. S. (2023). Extending records of albinism and skin disorders in American cownose rays to southeastern Brazil. Journal of Fish Biology, 103(2), 453–456. https://doi.org/10.1111/jfb.15463
Ross, S. W. (1988). Xanthic Coloration as the Normal Color Pattern of Juvenile Speckled Hind, Epinephelus drummondhayi (Pisces: Serranidae). Copeia, 1988(3), 780–784. https://doi.org/10.2307/1445402
San Gil-León, J., & Angulo, A. (2021). Xantismo en peces cíclidos (Cichliformes: Cichlidae) costarricenses, y variación ontogenética en Parachromis dovii. UNED Research Journal, 13(1), e3093. https://doi.org/10.22458/urj.v13i1.3093
Sefc, K. M., Brown, A. C., & Clotfelter, E. D. (2014). Carotenoid-based coloration in cichlid fishes. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 173, 42–51. https://doi.org/10.1016/j.cbpa.2014.03.006
Soldo, A. (2023). The first record of complete albinism in common stingray Dasyatis pastinaca (Linnaeus, 1758). Annales: Series Historia Naturalis, 33(2), 193–198. https://doi.org/10.19233/ASHN.2023.22
Soto-Lopez, S., Valverde-Cantillo, V., & Fallas-Madrigal, D. F. (2026). [Unpublished raw data on Photo-ID assessment in Urotrygon asterias and Urobatis pardalis]. Equipo Tora Carey and Oceanic Alliance.
Torres-Huerta, A. M., Meraz, J., Carrasco-Bautista, P. E., & Díaz-Carballido, P. L. (2015). Morphological abnormalities of round rays of the genus Urotrygon in the Gulf of Tehuantepec. Marine Biodiversity, 46, 309–315. https://doi.org/10.1007/s12526-015-0347-3
Wosnick, N., Takatsuka, V., Mello, A. E., Dias, J., Lubitz, N., & Azevedo, V. G. (2019). Embryonic malformations in an offspring of the short nose guitarfish. Brazilian Journal of Oceanography, 67, e19273. https://doi.org/10.1590/s1679-87592019027306710
Wu, R. S. S. (1995). The environmental impact of marine fish culture: Towards a sustainable future. Marine Pollution Bulletin, 31(4–12), 159–166. https://doi.org/10.1016/0025-326X(95)00100-2
Xue, C., Mi, H., Huang, D., Liang, H., Aboseif, A. M., Ren, M., & Zhang, L. (2024). Transcriptome-based studies on the candidate genes related to body color yellowing in channel catfish (Ictalurus punctatus). Aquaculture Reports, 39, 102472. https://doi.org/10.1016/j.aqrep.2024.102472
Zambrano, L. A. (2021). Notas sobre los cambios ontogénicos en el patrón de coloración de Narcine bancroftii (Griffith and Smith 1834) (Torpediniformes: Narcinidae). Ecotropicos, 33. https://doi.org/10.53157/ecotropicos.33E0017
Zhang, W., Zhang, L., & Wang, W. X. (2017). Prey-specific determination of arsenic bioaccumulation and transformation in a marine benthic fish. Science of The Total Environment, 586, 296–303. https://doi.org/10.1016/j.scitotenv.2017.01.222
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