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Tamoya Haplonema (Cnidaria: Cubozoa) from Uruguayan And Leoni et al. Marine Biodiversity Records (2016) 9:92 DOI 10.1186/s41200-016-0093-7 MARINE RECORD Open Access Tamoya haplonema (Cnidaria: Cubozoa) from Uruguayan and adjacent waters: oceanographic context of new and historical findings Valentina Leoni1,2,3*†, Silvana González1,2,3†, Leonardo Ortega1†, Fabrizio Scarabino1,2,4†, Gabriela Failla Siquier5, Alicia Dutra6, Luis Rubio1,2, Martin Abreu7, Wilson Serra1,2,3, Ana Gabriella Alonzo Campi6, Sergio N. Stampar8† and André C. Morandini9 Abstract New records of the cubozoan jellyfish Tamoya haplonema in Uruguayan waters are reported together with historical records for the region, and associated with the oceanographic conditions at the moment of the finding. Occurrences of the species are mainly associated with positive Sea Surface Temperature Anomalies especially during summer months when the intrusion of warm oceanic waters to the Uruguayan coastline is stronger. This was particularly strong during 2012–2013, when a dry period enhanced this scenario. This species is the only cubozoan present in Uruguay, with a sporadic occurrence and so far has no appreciated negative effects on public health. However, from observed increasing frequency of positive temperature anomalies it would be reasonable to predict a future southward shift in the latitudinal distribution of T. haplonema. In this context, occurrence of this toxic species along Uruguayan coastal waters must be considered with particular attention to the potential negative impact on tourism and on general public health. Keywords: Box jellyfish, Tamoya haplonema, Uruguay, South Atlantic Introduction some taxa, as well as their large temporal and spatial The cnidarian class Cubozoa comprises approximately variation in abundance (Kingsford and Mooney 2014). 50 described species (Bentlage et al. 2010), mostly The box jellyfish Tamoya haplonema Müller, 1859 restricted to warm waters of the globe (Marques et al. is one of the two valid species of the genus, also 2003; Morandini et al. 2005). Cubozoans have ecological represented by the recently described Tamoya ohboya and medical importance playing an important role in (Collins et al. 2011). As many other cubozoans, marine food webs, affecting fishing activities and tourism T. haplonema causes severe envenomation (Haddad et al. (Kingsford and Mooney 2014). However, knowledge on 2009). Morandini and Marques (1997) reported the first their ecology and on how oceanographic conditions case of envenomation in southeastern Brazilian waters, affect population dynamics and distribution are rare for which produced burning sensation followed by a 7-day cubomedusae when compared to scyphomedusae and period of itching and a permanent scar on the affected skin. hydromedusae. This disparity could be explained by a Tamoya haplonema is associated to warm neritic limited knowledge on cubozoan taxonomy, the rarity of waters of both western and eastern Atlantic Ocean (Mianzan and Cornelius 1999), although records from eastern Atlantic might be considered doubtful * Correspondence: [email protected] (Pagès et al. 1992; Gershwin and Gibbons 2009). In †Equal contributors 1Dirección Nacional de Recursos Acuáticos, Constituyente 1497, C.P 11200 the Southwestern Atlantic, the southernmost record is Montevideo, Uruguay at 38°39′S, 58°40′W, off Puerto Quequén, Buenos Aires 2 Museo Nacional de Historia Natural, C.C. 399, C.P 11000 Montevideo, Province, Argentina (Mianzan and Cornelius 1999; Uruguay Full list of author information is available at the end of the article Pastorino 2001). © 2016 The Author(s). Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. Leoni et al. Marine Biodiversity Records (2016) 9:92 Page 2 of 9 In the present study, we aimed to: 1) present new re- Confluence Zone, where the warm poleward-flowing Brazil cords of Tamoya haplonema in Uruguayan coastal water, Current and the cold equatorward-flowing Malvinas/ 2) review and summarize previous records of this species Falklands Current converge (Fig. 1, Gordon 1981; 1989). for Uruguay and adjacent waters, and 3) explore possible The location of this zone shifts seasonally reaching higher association between such records and the oceanographic latitudes during austral summer (i.e., December 21st to and climatic context. March 21st, Maamaatuaiahutapu et al. 1994; Barré et al. 2006). Shallow coastal waters near the borders of Uruguay Materials and methods and Argentina (i.e., depths < 50 m) are highly influenced Study area by the Río de la Plata freshwater discharge that exhibits The most relevant oceanographic feature of the monthly variations, with higher discharges during the Southwestern Atlantic Ocean is the Brazil-Malvinas austral fall-winter and the lowest discharge during the Fig. 1 Schematic representation of the most relevant surface currents of the western South Atlantic. The Brazil–Malvinas/Falklands Confluence Zone (BMCZ) is shown over Aqua MODIS Sea Surface Temperature (ºC) austral summer climatology (2002–2013, http://oceancolor.gsfc.nasa.gov/ cgi/l3); the 1000 m isobath is shown Leoni et al. Marine Biodiversity Records (2016) 9:92 Page 3 of 9 austral spring-summer (Sepúlveda et al. 2004). Interannual following Morandini et al. (2005) after preservation and changes in the precipitation regime mainly connected measurements were taken in well-preserved specimens. with El Niño Southern Oscillation (ENSO) (Cazes-Boezio In all collected specimens the umbrella height and width et al. 2003) also influences discharges of Río de la Plata, (interpedalia distance, IPD) were measured (maximum, increasing and decreasing during El Niño and La Niña minimum and the average of the four IPD are reported). events, respectively. Thus, the lower freshwater input dur- Pedalia were not preserved properly in some individuals ing austral summer combined with a higher influence of and therefore measurements cannot be provided. The cni- Brazil Current waters in the region, favours the incursion dome (set of types and sizes of cnidae from different body of warm oceanic waters in the coastal area (Ortega and parts) was performed from a preserved specimen stranded Martínez 2007) which could be enhanced during certain in La Paloma (34°39′S54°8′W) on February 2013 based years in response to ENSO cold phase (La Niña). on methods and nomenclature presented by Collins et al. (2011). Specimens were deposited in the collection of Literature records, samples identification and Invertebrate Zoology of the Museo Nacional de Historia measurements Natural (Montevideo, Uruguay) and in the collection Published records of cubozoans in the temperate zone of of Invertebrate Laboratory of Facultad de Ciencias, the Southwestern Atlantic Ocean are scarce and were ana- Universidad de la República (Montevideo, Uruguay). lyzed in detail, even considering particularly cryptic/grey lit- erature as regional conference abstracts. Samples consisted Oceanographic and climatic data of: a) stranded individuals along the Uruguayan coast (Feb- Monthly Sea Surface Temperature Anomalies (SSTA) ruary 1990 and 2007, January and February 2012, and Janu- data were computed from the Extended Reconstructed ary, February, March and September 2013), and b) Sea Surface Temperature, version 3 (ERSST_V3) dataset specimens collected on board R.V. “Aldebaran” on Novem- based on IRI/LDEO Climate Data Library (Xue et al. ber 2012. Such specimens were obtained as by-catch of a 2003; Smith et al. 2008). Monthly regional averages of Engel-type bottom trawl net (100 mm stretched mesh in SSTA from 1960 to 2013 were calculated for the area the wings, 50 mm stretched mesh in the cod ends, 28 m enclosed between latitudes 30° and 36°S and longitudes horizontal aperture and 4 m vertical opening), used for de- between 50° and 60°W. The analyses were performed mersal fish assessment of the Dirección Nacional de Recur- using the Ingrid language provided by the IRI Data sos Acuáticos (DINARA). Other records were made by Library (http://iridl.ldeo.columbia.edu/). Weighted Anomaly sightings from lifeguards during summer (January 2012, Standardized Precipitation information from the IRI February and March 2013), but specimens were not col- Climate Map Room (http://iridl.ldeo.columbia.edu/ lected. Since 2011, lifeguards from the Uruguayan coast maproom/Global/Precipitation/WASP_Indices.html; had been trained by specialists in courses and workshops Lyon 2004; Lyon and Barnston 2005) was used to about identification of gelatinous zooplankton species, re- analyze the relative deficit of precipitation during the ceiving guides with photographs and key diagnostic features 2011–2013 summer period. as well as standardized recording sheets (Failla Siquier and During the survey performed in November 2012 on board Dutra 2012; Failla Siquier and Dutra 2014). R.V. “Aldebaran”, temperature and salinity data was ob- In order to contextualize the historical presence of T. tained in situ with CTD (SBE-19 plus, Sea-Bird Electronics). haplonema in the Uruguayan coast we considered: 1) regular efforts made
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