Anomalous pigmentation in a dusky dolphin Lagenorhynchus obscurus from Golfo Nuevo, Argentinian Patagonia

Pigmentación anómala en delfín oscuro Lagenorhynchus obscurus del Golfo Nuevo, Patagonia Argentina

Autores/as

DOI:

https://doi.org/10.22370/rbmo.2023.58.2.4222

Palabras clave:

Hypo-pigmentation, leucism, dusky dolphin, Argentinian Patagonia

Resumen

Anomalous pigmentation conditions occur with low frequency in marine mammals. Here is presented the first known record and resighting of a hypo-pigmented all-white dusky dolphin from Golfo Nuevo off Península Valdés, Argentinian Patagonia. The anomalously pigmented Lagenorhynchus obscurus was observed three times between 2016 and 2018. Images suggest that this could be a case of a leucistic dusky dolphin, apparently a single individual. The hypo-pigmented individual was estimated to have reached adult body size, and was probably sexually mature. More research is required for a proper understanding of the effect on behavioral, ecological and physiological conditions.

Biografía del autor/a

María Soledad Lindner, Universidad Nacional de la Patagonia San Juan Bosco

Corresponding author: msoledadlindner@hotmail.com

Citas

Abreu MSL, R Machado, F Barbieri, NS Freitas & LR Oliveira. 2013. Anomalous colour in Neotropical mammals: A review with new records for Didelphis sp. (Didelphidae, Didelphimorphia) and Arctocephalus australis (Otariidae, Carnivora). Brazilian Journal of Biology 73(1): 185-194.

Acevedo J & M Aguayo. 2008. Leucistic south American sea lion in Chile, with a review of anomalously color in otariids. Journal of Marine Biology and Oceanography 43(2): 413-417.

Alves F, R Ferreira, L Dias, C Nicolau, D Sousa, C Moura, C Gomes & A Dinis. 2017. Rare records of hypo- and hyper-pigmented individuals in two delphinid species off Madeira Islands. Hystrix, the Italian Journal of Mammalogy 28(1): 116-118. <https://doi.org/10.4404/hystrix>

Caro T, K Beeman, T Stankowich & H Whitehead. 2011. The functional significance of colouration in cetaceans. Evolutionary Ecology 25: 1231-1245.

Degrati M, SL Dans, GV Garaffo & EA Crespo. 2012. Diving for food: A switch of foraging strategy of dusky dolphins in Argentina. Journal of Ethology 30(3): 361-367. <https://doi.org/10.1007/s10164-012-0333-1>

Fertl D & P Rosel. 2018. Albinism. In: Würsig B, JGM Thewissen & KM Kovacs (eds). Encyclopedia of marine mammals, pp. 20-21. Elsevier, San Diego.

Fertl D, LT Pusser & JJ Long. 1999. First record of an albino bottlenose dolphin (Tursiops truncatus) in the Gulf of Mexico, with a review of anomalously white cetaceans. Marine Mammal Science 15(1): 227-234. <https://doi.org/10.1111/j.1748-7692.1999.tb00794.x>

Fertl D, NB Barros, RA Rowlett, S Estes & M Richlen. 2004. An update on anomalously white cetaceans, including the first account for the pantropical spotted dolphin (Stenella attenuata graffmani). Latin American Journal of Aquatic Mammals 3(2): 163-166. <https://doi.org/10.5597/lajam00061>

Hain JHW & S Leatherwood. 1982. Two sightings of white pilot whales, Globicephala melaena, and summarized records of anomalously white cetaceans. Journal of Mammalogy 63: 338-343.

Lodi L & M Borobia. 2013. Anomalous coloration in an Atlantic spotted dolphin (Stenella frontalis) from Southeastern Brazil 17(2): 1-3. <https://doi.org/10.14210/bjast.v17.n2.pNB1-3>

Methion S & B Díaz-López. 2019. First record of atypical pigmentation pattern in fin whale Balaenoptera physalus in the Atlantic Ocean. Diseases of Aquatic Organisms 135(2): 121-125.

Pawelek JM & AM Körner. 1982. The biosynthesis of mammalian melanin: The regulation of pigment formation, the key to disorders such as albinism and piebaldism, may also offer some clues for the treatment of melanoma. American Scientist 70: 136-145.

Robinson KP & GN Haskins. 2013. Rare sighting of an anomalously white harbour porpoise (Phocoena phocoena) in the Moray Firth, north-east Scotland. Marine Biodiversity Records 6: e23. <https://doi.org/10.1017/S1755267212001339>.

Santos RP, S Simião, P Madruga, AS Mendonça, R Seitre & JN Gomes-Pereira. 2016. Anomalously white Atlantic spotted dolphins (Stenella frontalis, Cuvier, 1892) off the Azores. Aquatic Mammals 42(2): 245-252. <https://doi.org/10.1578/AM.42.2.2016.244>

Schiavini A, SN Pedraza, EA Crespo, R González & SL Dans. 1999. Abundance of dusky dolphins (Lagenorhynchus obscurus) off North and Central Patagonia, Argentina, in spring and a comparison with incidental catch in fisheries. Marine Mammal Science 15(3): 828-840. <https://doi.org/10.1111/j.1748-7692.1999.tb00845.x>

Slominski A, DJ Tobin, S Shibahara & J Wortsman. 2004. Melanin pigmentation in mammalian skin and its hormonal regulation. Physiological Reviews 84(4): 1155-1228.

Tsutsui S, M Tanaka, N Miyazaki & T Furuya. 2001. Pacific white-sided dolphins (Lagenorhynchus obliquidens) with anomalous colour patterns in Volcano Bay, Hokkaido, Japan. Aquatic Mammals 27(2): 172-182.

Van Waerebeek K. 1993. External features of the dusky dolphin Lagenorhynchus obscurus (Gray 1828) from Peruvian waters. Estudios Oceanológicos 12: 37-53.

Van Waerebeek K & B Würsig. 2018. Dusky dolphins. In: Wursig B, JGM Thewissen & KM Kovacs (eds). Encyclopedia of marine mammals, pp. 277-280. Elsevier, San Diego.

Van Waerebeek K, R Leaper, AN Baker, V Papastavrou, D Thiele, K Findlay, G Donovan & P Ensor. 2010. Odontocetes of the Southern Ocean Sanctuary. Journal of Cetacean Research and Management 11(3): 315-346.

Vollmer NL, E Ashe, RL Brownell Jr, F Cipriano, JG Mead, RR Reeves, MS Soldevilla & R Williams. 2019. Taxonomic revision of the dolphin genus Lagenorhynchus. Marine Mammal Science 35: 957-1057. <https://doi.org/10.1111/mms.12573>

Descargas

Publicado

2023-12-31

Cómo citar

Lindner, M. S. (2023). Anomalous pigmentation in a dusky dolphin Lagenorhynchus obscurus from Golfo Nuevo, Argentinian Patagonia: Pigmentación anómala en delfín oscuro Lagenorhynchus obscurus del Golfo Nuevo, Patagonia Argentina. Revista De Biología Marina Y Oceanografía, 58(2), 116–121. https://doi.org/10.22370/rbmo.2023.58.2.4222

Número

Sección

Nota Científica

Artículos similares

1 2 3 > >> 

También puede {advancedSearchLink} para este artículo.