NEW RECORD OF CARCHARHINUS LEUCAS IN AN AMAZONIAN RIVER SYSTEM
DOI:
https://doi.org/10.18764/1981-6421e2020.6Palabras clave:
Bull sharks, Tocantins River basin, Neotropical regionResumen
ABSTRACT
Carcharhinus leucas is a cosmopolitan shark species in tropical and subtropical waters. Normally, individuals are found in most of the major rivers in the world but records in the Amazon basin are somewhat scarce. Here we provide a new record of a young of the year female bull shark caught in Cametá (PA) as bycatch of the bottom longline fi shery, weighing 8 kg and measuring 90 cm total length. The Brazilian Amazon coast and its freshwater systems are one of the only areas where records of small young of the year and juveniles exist for the Atlantic Ocean on the Neotropical region. Therefore, this information is important to direct future research on habitat use and reproductive
patterns for the species in this region, since this could be a crucial area for the species conservation.
Resumo
Carcharhinus leucas é uma espécie de tubarão cosmopolita que vive em ambientes tropicais e subtropicais. Geralmente são encontradas na maioria dos rios do mundo, mas os seus registros nas bacias hidrográfi cas amazônicas são escassos. Neste estudo apresentamos um novo registro de uma fêmea juvenil de tubarão cabeça-chata capturada em Cametá (PA) como fauna acompanhante da pesca de espinhel, pesando 8 kg e medindo 90 cm de comprimento total. O Litoral Amazônico Brasileiro e os seus sistemas fl uviais são alguns dos únicos ambientes onde indivíduos jovens do ano e juvenis podem ser encontrados na região Neotropical do oceano Atlântico. Portanto, estas informações são importantes para delinear futuros estudos sobre o uso de habitat e padrões reprodutivos para a espécie nesta região, uma vez que esta área pode ser crucial para sua conservação desta espécie.
Palavras-chave: Tubarão cabeça-chata; Bacia do rio Tocantins; Região Neotropical.
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Akama, A. 2017. Impacts of the hydroelectric power generation over the fish fauna of the Tocantins River, Brazil: Marabá dam, the final blow. Oecologia Australis, 21(3): 222-231.
Bangley, C. W., Paramore, L., Shiffman, D. S. & Rulifson, R. A. 2018. Increased Abundance and Nursery Habitat Use of the Bull Shark (Carcharhinus leucas) in Response to a Changing Environment in a Warm-Temperate Estuary. Scientific Reports, 8(1). doi:10.1038/s41598-018-24510-z
Cardeñosa, D., Glaus, K.B.J. & Brunnschweiler, J. M. 2016. Occurrence of juvenile bull sharks (Carcharhinus leucas) in the Navua River in Fiji. Marine and Freshwater Research. doi:10.1071/mf16005
Carrier J.C, Musick J.A. and Heithaus M.R. 2004. Biology of sharks and their relatives. Florida: CRC Press; 596p.
Coad, B. W. & Al-Hassan, L. A. J. 1989. Freshwater shark attacks at Basrah, Iraq. Zoology in the Middle East, 3(1), 49–54. doi:10.1080/09397140.1989.10637574
Feitosa, L. M., Martins, A. P. B., & Nunes, J. L. S. 2016. New record of Carcharhinus leucas (Valenciennes, 1839) in an equatorial river system. Marine Biodiversity Records, 9(1). doi:10.1186/s41200-016-0094-6
Glaus, K.B.J., Brunnschweiler, J.M., Piovano, S., Mescam, G., Genter, F., Fluekiger, P., Rico, C. 2019. Essential waters: Young bull sharks in Fiji's largest riverine system. Ecology and Evolution, 2019; 9: 7574– 7585. https://doi.org/10.1002/ece3.5304
Grant, M. I., Kyne, P. M., Simpfendorfer, C. A., White, W. T., Chin, A. (2019). Categorising use patterns of non-marine environments by elasmobranchs and a review of their extinction risk. Reviews in Fish Biology and Fisheries, 1-22.
Helfman, G. S., B. B. Collette, D. E. Facey & Bowen, B. W. 2009. The diversity of fishes: Biology, Evolution, and Ecology. West Sussex: Wiley-Blackwell, 720 p.
Ho, J. T., Thompson, J. R., & Brierley, C. 2016. Projections of hydrology in the Tocantins-Araguaia Basin, Brazil: uncertainty assessment using the CMIP5 ensemble. Hydrological Sciences Journal, 61(3), 551–567. doi:10.1080/02626667.2015.1057513
Kelaher, B. P., Colefax, A. P., Tagliafico, A. & Bishop, M. J., Giles, A. & Butcher, P. A. 2019. Assessing variation in assemblages of large marine fauna off ocean beaches using drones. Marine and Freshwater Research. doi:10.1071/mf18375
Klimley A.P. 2013. The biology of sharks and rays. Chicago: The University of Chicago Press; 512p.
Lasso, CA, Rosa, RS, Sánchez-Duarte, P, Morales-Betancourt, MA & Agudelo-Córdoba, E. 2013. Rayas de agua dulce (Potamotrygonidae) de Suramérica. Parte I. Colombia, Venezuela, Ecuador, Perú, Brasil, Guyana, Surinam y Guayana Francesa: diversidad, bioecología, uso y conservación. Serie Recursos Hidrobiológicos y Pesqueros Continentales de Colombia. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt. 368p.
Laxson, C. J., Condon, N. E., Drazen, J. C. & Yancey, P. H. 2011. Decreasing Urea∶Trimethylamine N-Oxide Ratios with Depth in Chondrichthyes: A Physiological Depth Limit? Physiological and Biochemical Zoology, 84(5), 494–505. doi:10.1086/661774
Nicholls, Z. W. 2017. The Bull Shark Compendium. Deep Sea Publishing,
Oguri, M. 1964. Rectal Glands of Marine and Fresh-Water Sharks: Comparative Histology. Science, 144(3622), 1151–1152. doi:10.1126/science.144.3622.1151
Pillans, R. D. & Franklin, C. E. 2004. Plasma osmolyte concentrations and rectal gland mass of bull sharks Carcharhinus leucas, captured along a salinity gradient. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 138(3), 363–371. doi:10.1016/j.cbpb.2004.05.006
Pillans, R. D., Anderson, W. G., Good, J. P., Hyodo, S., Takei, Y., Hazon, N., & Franklin, C. E. 2006. Plasma and erythrocyte solute properties of juvenile bull sharks, Carcharhinus leucas, acutely exposed to increasing environmental salinity. Journal of Experimental Marine Biology and Ecology, 331(2), 145–157. doi:10.1016/j.jembe.2005.10.013
Reilly, B. D., Cramp, R. L., Wilson, J. M., Campbell, H. A. & Franklin, C. E. 2011. Branchial osmoregulation in the euryhaline bull shark, Carcharhinus leucas: a molecular analysis of ion transporters. Journal of Experimental Biology, 214(17), 2883–2895. doi:10.1242/jeb.058156
Ribeiro, M.C.L.B; Petrere-Jr., M. & Juras, A.A. 1995. Ecological integrity and fisheries ecology of the Araguaia-Tocantins river basin, Brazil. Regulated Rivers Research and Management, 11: 325-350. doi:10.1002/rrr.3450110308
Sadowsky, V. 1971. Notes on the Bull shark Carcharhinus leucas in the lagoon region of Cananéia, Brazil. Boletim do Instituto Oceanográfico, 20(2), 71–78. doi:10.1590/s0373-55241971000200002
Santos, G. M.; Juras, A. A.; Merona, B. & Jegu, M. 2004. Peixes do baixo Rio Tocantins. 20 anos depois da Usina Hidrelétrica Tucuruí. Brasilia: Eletronorte.
Simpfendorfer, C.; Burgess, G. H. 2009. Carcharhinus leucas. The IUCN Red List of Threatened Species:e.T39372A10187195. https://dx.doi.org/10.2305/IUCN.UK.20092.RLTS.T39372A10187195.en. Accessed in February 4th 2020.
Strickland, B. A., Massie, J. A., Viadero, N., Santos, R., Gastrich, K. R., Paz, V., O’Donnell, P., Kroetz, A.M., Ho, D.T., Rehage, J.S. and Heithaus, M. R. 2019. Movements of Juvenile Bull Sharks in Response to a Major Hurricane Within a Tropical Estuarine Nursery Area. Estuaries and Coasts. doi:10.1007/s12237-019-00600-7
Thomerson, J.E., Thorson, T.B. & Hempel, R.L. 1977. The Bull Shark, Carcharhinus leucas, from the Upper Mississippi River near Alton, Illinois. Copeia, 1977(1), 166. doi:10.2307/1443522
Thorson, T.B. 1972. The Status of the Bull Shark, Carcharhinus leucas, in the Amazon River. Copeia, 1972(3), 601. doi:10.2307/1442947
Tillett, B. J., Meekan, M. G., Parry, D., Munksgaard, N., Field, I. C., Thorburn, D., & Bradshaw, C. J. 2011. Decoding fingerprints: elemental composition of vertebrae correlates to age-related habitat use in two morphologically similar sharks. Marine Ecology Progress Series, 434, 133-142. doi: 10.3354/meps09222
Valverde, M. & Marengo, J. 2014. Extreme Rainfall Indices in the Hydrographic Basins of Brazil. Open Journal of Modern Hydrology, 4: 10-26.doi: 10.4236/ojmh.2014.41002.
Wosnick, N. & Freire, C. A. 2013. Some euryhalinity may be more common than expected in marine elasmobranchs: The example of the South American skate Zapteryx brevirostris (Elasmobranchii, Rajiformes, Rhinobatidae). Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 166(1), 36–43. doi:10.1016/j.cbpa.2013.05.002
