Medusae and ctenophores from the Bahía Blanca Estuary and neighboring inner shelf (Southwest Atlantic Ocean, Argentina)
© The Author(s) 2017
Received: 17 September 2015
Accepted: 17 January 2017
Published: 12 May 2017
An updated checklist of medusae and ctenophores is presented for the first time for the area comprised by the Bahía Blanca Estuary, the adjacent shelf El Rincón and Monte Hermoso beach, on the southwest coast of Buenos Aires province (Argentina). The area is highly productive and provides several ecosystem services including fishing and tourism. Updated information on the biodiversity of medusae and ctenophores species is essential for the study area, given that these species can affect ecosystem services. The list includes 23 hydromedusae, 3 scyphomedusae, and 3 ctenophores. Five hydromedusae (Halitiara formosa, Amphinema dinema, Aequorea forskalea, Clytia lomae and Halopsis ocellata) were firstly observed in this area. Three species of medusae, 2 hydromedusae (Olindias sambaquiensis and Liriope tetraphylla) and 1 scyphomedusae (Chrysaora lactea) pose a potential health risk, due to their toxicity to humans. Considering the size of the study area, the Bahía Blanca region has a comparatively high species richness of hydromedusae, higher than larger zones previously studied along the temperate SW Atlantic Ocean. The present report provides the baseline knowledge of gelatinous species for the Bahía Blanca region.
Our knowledge of gelatinous fauna (medusae and ctenophores particularly) in the Argentine Sea has been much enhanced since major contributions by Ramírez and Zamponi (1981), Bouillon (1999), Mianzan (1999), Mianzan and Cornelius (1999), Genzano et al. (2008a) and Rodriguez (2012). However, the Bahía Blanca Estuary and its neighboring inner shelf is a still largely understudied area, in spite of the widely recognized ecosystem services that these coastal waters provide, such as wildlife support (Delhey and Petracci 2004; Hoffmeyer et al. 2009; Guinder et al. 2013) and fisheries production (Carozza and Fernández Aráoz 2009), as well as nutrient cycling and amelioration of heavy metal pollution (Negrin et al. 2016). These coastal waters are intensely used for fishing, recreational purposes, and provide space for industrial, port and commercial activities (Acha et al. 2004; Pizarro and Piccolo 2008). Several species of medusae and ctenophores have been reported in the region (Ramírez and Zamponi 1980; Hoffmeyer and Mianzan 2004), including species which may exert considerable predation pressure on fishing resources, mainly through consumption of larvae and juveniles, as well as competition for food (Mianzan and Sabatini 1985; Mianzan 1986a; Hoffmeyer 1990). Medusae species of public health concern such as Olindias sambaquiensis and Liriope tetraphylla have also been reported in high concentrations (Mianzan and Ramírez 1996; Mianzan et al. 2000, 2001). Species composition and ecological studies on medusae and ctenophores in the Bahía Blanca region were mainly conducted in the 1980’s (Mianzan and Sabatini 1985; Zamponi and Mianzan 1985; Mianzan 1986a, 1986b, 1989a, 1989b, 1989c; Mianzan and Zamponi 1988; Hoffmeyer 1990), but discontinued afterwards.
Given the potential impacts of gelatinous species on valuable ecosystem services, updated information on their biodiversity in the study area is essential. This work aims at compiling information on the species composition of medusae and ctenophores in the Bahía Blanca Estuary and its neighboring inner shelf. To do so, we considered earlier faunal lists and own unpublished data from plankton surveys.
Materials and methods
Own data collection and literature review
We present own data from 89 plankton samples, collected in 33 sampling campaigns. Plankton sampling within the study area was performed in December 2012, and recurring monthly campaigns were carried out from April 2013 to May 2014, and from December 2014 to February 2015 (Fig. 1). To collect the samples, Hensen-like zooplankton nets were used (mouth diameters 30 and 40 cm, and mesh sizes 67, 200 and 500 μm) and also a modified RMT (Rectangular Midwater Trawl; mouth opening 2.25 m2 and mesh size 1000), designed to capture a wider size range of gelatinous organisms. Hensen nets were used in oblique tows (bottom to surface) from a motorboat or ship moving at ~2 knots, during 7 min. The RMT net was deployed against the ebb tide current, during 20 min. Records of stranded individuals were also considered.
Review of medusae and ctenophores from the Bahía Blanca region (Argentina) based on own data and literature data. In each case, data related to study area and type of collection from own samples are highlighted in bold while those from literature are not highlighted; when both sources overlap, data are italic
Type of collection
1979–1981; 1983–2008; 2010; 2013–2014
Amphinema dinema a
Halitiara formosa a
1982; 1983–2008; 2010; 2013–2014
H c, J, A
Aequorea forskalea a
1971–1972; 1997; 1998; 2003; 2013–2014
1983–2008; 2010; 2014
Clytia lomae a
Ramírez and Zamponi 1980
1979–1981; 1993–2006; 2013–2014
H, J, A
Rodriguez et al. 2007
Halopsis ocellata a
Genzano et al. 2008a; This study
Mianzan 1986a; This study
na; J, A
1983; 1987–1988; 1992–2002; 2013–2014
Ramírez and Zamponi 1980
1982–1984; 2008; 2012
E, J, A
1982–1984; 2008; 2013
E, J, A
1982–1984; 1990; 2013–2014
Hoffmeyer 1983; This study
na; J, A
Species composition, richness and current observations
In all, 29 species were either found in our samples or reported by others in the study area (26 of Medusozoa and 3 of Ctenophora; Table 1). Among these, 16 species (55.2% of all gelatinous species) were recorded in our samples and also in the literature, eight species (27.6%) were only found cited in the literature, but they did not appear in our samples, and the remaining five species (17.2%) were found exclusively in our samples (Table 1).
Scyphozoa was represented by three species of the order Semaeostomeae, families Pelagiidae, Ulmaridae and Cyaneidae. Chrysaora lactea, Aurelia aurita and Drymonema gorgo were the only scyphozoans recorded in the area (Table 1). We did not find A. aurita ephyrae in our samples, although the use of this coastal area as a reproduction site had been suggested (Mianzan 1986a). Regarding C. lactea, ephyrae of this species were frequently found in our samples, mainly in BBE and ER.
The Phylum Ctenophora was represented by three species of the orders Lobata, Cydippida and Beroida (cf. Table 1). Mnemiopsis leidyi was found throughout the year, with higher concentrations during autumn and spring, mainly in channels within the BBE connected with island zones. Beroe ovata was also found in the estuary almost all year round, and aggregations of Pleurobrachia pileus were observed in the inner estuary during early spring.
Finally, three stinging species of public health concern were found in the area: the hydromedusae Olindias sambaquiensis and Liriope tetraphylla, and the scyphomedusa Chrysaora lactea. Regarding stinging species, a consistent summer trend was observed since 2013, characterized by decreasing numbers of O. sambaquiensis, and large amounts of L. tetraphylla (from 600 to more than 1000 ind.m−3).
Taxonomic descriptions of the species observed for the first time in the study area
Halitiara formosa Fewkes 1882
Umbrella about 3 mm high, pear-shaped, with solid apical projection about half as long as bell cavity, 4 straight radial canals; 4 long, hollow perradial marginal tentacles and 24–35 short, solid cirrus-like tentacles; mouth simple, cruciform; with or without mesenteries; “gonads” interradial, smooth, sometimes extending over mesenteries; without ocelli; cnidome, when known, with merotrichous isorhizae (Bouillon 1999; Bouillon et al. 2006) (Fig. 2 A).
Amphinema dinema Péron and Lesueur 1810
Umbrella up to 4 mm wide and 6 mm high with considerable conical, solid, apical projection, jelly of uniform thickness around top. Four undivided radial canals. Manubrium with broad base, cross-like in section, flask-shaped, almost as long as bell cavity. Mouth with four prominent, recurved lips. With eight simple adradial gonads, smooth, on manubrium wall only. Two perradial, hollow, marginal tentacles with large elongated conical basal bulbs; bulbs without ocelli. With 14–24 small marginal warts (Bouillon 1999) (Fig. 2 B1-2).
Aequorea forskalea Péron and Lesueur 1810
Flat umbrella, 14–32 mm in diameter. Short manubrium, mouth large, about half the diameter of umbrella. Numerous radial canals (usually 60–80, sometimes fewer, and up to 160). Tentacles with elongate conical bulbs, generally less numerous than radial canals but varying from half to the same number of them; 5–10 statocysts between successive radial canals. Gonads along almost the entire length of the radial canals (Nagata et al. 2014) (Fig. 2 C1-3).
Clytia lomae Torrey 1909
Umbrella 9–12 mm in diameter, about 4 times broader than high, thin. Gonads narrow, elongated along less than 1/2 of the distal part of radial canals; about 32 tentacles and some young bulbs. Manubrium short, cruciform; mouth with 4 slightly frilled lips; bulbs elongated; 1 (rarely 2) statocysts between successive tentacles (Bouillon 1999). Smaller medusae (umbrella 3–5 mm wide) have been observed in Argentine waters (Rodriguez 2012; this study) (Fig. 2 D1-2).
Halopsis ocellata Agassiz 1865
Umbrella 50–65 mm in diameter, about 4 times as wide as high, watch-glass-shaped; mesoglea thick toward centre; manubrium broad, flat, 1/5 of bell diameter, circular to star-shaped in outline; mouth with 4 fairly short lips; 12–16 radial canals in 4 groups branching usually within outline of manubrium; gonads linear, about 2/3 of radial canals; up to 450 marginal tentacles; 1 marginal cirrus between successive tentacles; about 80 statocysts (Bouillon 1999). Smaller medusae (umbrella up to 28 mm in diameter) have been observed in Argentine waters (Rodriguez 2012; this study) (Fig. 2 E1-2).
Our study provides the first compiled list of medusae and ctenophores species of the Bahía Blanca region, adding five hydromedusae species that had not been previously reported for the area. We found a high richness of hydromedusae species compared to values reported along the temperate Southwestern Atlantic platform (Genzano et al. 2008a; Rodriguez 2012). Based on an exhaustive sampling carried out across the neritic region from 33° to 55°S, over 20 years, Genzano et al. (2008a) recognized 71 hydromedusae species. Our study area covers less than 3% of the area covered by Genzano et al. (2008a), but we found 32.4% of the total number of hydromedusae species detected by these authors, a disproportionally large richness for the small area considered.
Taking into account the transitional location of our study area and the hydromedusae faunal list by Rodriguez (2012), we found species that equally represent both the Rionegrin and Uruguayan biogeographic districts. According to Balech and Ehrlich (2008), the Argentine Province is essentially neritic, characterized by a marked biological heterogeneity due to the mix of subtropical and subantarctic waters. This combination of subtropical and subantartic elements also determines a low level of endemism for organisms in this region. The fundamentally neritic character of the Argentine Province is further reflected in the dominance of meroplanktonic species in the Bahía Blanca region (see Bouillon et al. 2006). Among hydromedusae, the meroplanktonic Leptomedusae showed the highest genus diversity followed by Anthomedusae, and only three species of hydromedusae considered endemic to the southwestern Atlantic were observed (Mianzan 1989c; Genzano et al. 2008a).
The species observed for the first time in the study area also belong to the orders Leptomedusae and Anthomedusae. Halitiara formosa, A. dinema and C. lomae were previously reported in the Argentine Sea south and north of our study area, while H. ocellata and A. forskalea were reported in austral waters (from 51° to 54°50′S and from 43° to 53°S, respectively). This later species was reported in Patagonian waters and there is only one record northward from our study area within the Argentine Sea (37°40′S-56°02′W) (Genzano et al. 2008a). The underlying causes of the massive occurrences of A. forskalea observed in MH during January 2014 and February 2016 are still unresolved. We hypothesize that changes in currents and wind patterns might have produced a recurrent advection of large numbers of individuals, but further studies are required to understand the origin of these mass occurrences. However it has to be also considered that jellyfish research in the study area has been neglected over the past 20 years, and the increasing sampling effort on gelatinous zooplankton throughout the last 5 years increased the proportion of findings related to gelatinous species.
Chrysaora lactea, A. aurita and D. gorgo were the only scyphozoans found in the study area (Mianzan 1989a, b; Schiariti et al. 2016; this study). Although we did not find A. aurita ephyrae in our samples, recently released ephyrae of this species were reported by Mianzan (1989a) who suggested the use of this coastal area as a reproduction site. Regarding C. lactea even though medusae are rather common and widespread, ephyrae have been rarely observed in plankton samples elsewhere (Mianzan 1989a, 1989b; Tronolone et al. 2002). In our samples, however, ephyrae of C. lactea were frequently found, which supports the suggestion by Mianzan (1989a) about the reproduction area for these scyphozoans. Polyps of C. lactea have never been found in nature (Morandini et al. 2004). Potential substrata for polyp settlement include docks, harbors, support structures of industries, dredged material storage piles, buoys, fouling fauna, native vegetation, rocky, muddy and sandy bottoms (Miyake et al. 2002; Morandini et al. 2004; Lucas et al. 2012), all of them available in the study area. Future research should include benthic surveys to explore the presence of benthic stages, and their association with natural and human-made substrates. Finally, the occurrence of D. gorgo is a rare event that reconfirms its geographical distributional range for these latitudes (Mianzan 1989a, 1989b). Information on its ecology and distribution is very scarce due to its sporadic occurrence and the few specimens available for study (Williams et al. 2001; Bayha and Dawson 2010).
Coastal ctenophores are a major macroplanktonic group in the Southwestern Atlantic (Mianzan 1999), that may dominate zooplankton abundance and biomass (Mianzan et al. 1996; Mianzan and Guerrero 2000). In our study area, aggregations of ctenophores were observed at different times and sites (Hoffmeyer 1983; Mianzan and Sabatini 1985; Mianzan 1986a; Hoffmeyer 1990, this study). The occurrences of M. leidyi, B. ovata, and P. pileus in our samples are in agreement with findings by Mianzan and Sabatini (1985) and Mianzan (1986a).
Regarding the three species of public health concern, O. sambaquiensis has been long considered the most problematic species in terms of its health consequences, as well as its detrimental effects on touristic development (Mianzan et al. 2001). It causes severe skin damage and pain (Kokelj et al. 1993). Adults range in size from 6 to 10 cm (Nagata et al. 2014) although specimens up to 21 cm were observed in our study area (Mianzan 1986a). This species has a clear seasonal pattern of high-density aggregations during the warmest months (Macchi et al. 1995; Mianzan and Ramírez 1996), and were reported in the area from October to April (Mianzan 1986a). In spite of its presence year after year, the asexual polyp phase of O. sambaquinsis remains unidentified, and little is known about its population dynamic and reproduction (Macchi et al. 1995; Chiaverano et al. 2004). Regarding our samples, immature stages were expected to be found in late spring, as well as adults in summer. Nevertheless, juveniles did not appear and observations of adults reduced to sporadic occurrence in the area. This is in accordance with the unusual trend observed since 2013, characterized by a disappearance of the high-density aggregations usually observed (Brendel AS, Dutto MS, Menéndez MC, Huamantinco Cisneros MA, Piccolo MC: Wind pattern variation in a SW Atlantic beach: An explanation for changes in the coastal occurrence of the medusa Olindias sambaquiensis, submitted). The large amounts of L. tetraphylla observed in summer, since 2014, have also raised concern. These aggregations which can cause severe pruritus and strong itching sensation in sensitive areas of human skin conform a locally-known phenomenon called “tapioca”, which was well documented on northern beaches in Argentina and Uruguay (Mianzan et al. 2000), but never reported in this geographic area or further south. Finally, Chrysaora lactea was the last stinging species found in the study area. It is one of the most common blooming scyphozoan along the entire South Western Atlantic coast (Mianzan and Cornelius 1999; Migotto et al. 2002; Schiariti et al. 2016). This species can cause mild to moderate local pain and burning sensation. Although less common, erythema and edema forming lesions were also reported (Marques et al. 2014).
The background list provided lays the foundation for the development of further investigations on gelatinous zooplankton in this highly relevant economic and biological coastal area. Benthic surveys are required to confirm the occurrence of polyps and to provide potential valuable information on the biology of the gelatinous species (e.g. life cycle) inhabiting this geographic region.
This work was supported by Agencia Nacional de Promoción Científica y Tecnológica (PICT 2011-2096 to M.S. Hoffmeyer, PICT 2013-1773 to A. Schiariti, and PICT 2012-2071 to P.D. Pratolongo), Secretaría General de Ciencia y Tecnología, Universidad Nacional del Sur (PGI 24 B/236), Universidad Nacional de Mar del Plata (EXA 734/15 to G.N. Genzano), and Consejo Nacional de Ciencia y Tecnología of Argentina (PIP 0152 to G.N. Genzano and PIP 2013-00615 to A. Schiariti). We thank greatly to A. Conte, E. Redondo, E. Contardi, C. Bernárdez, and J. Albrizio, to Cámara de Pescadores de Monte Hermoso and Pehuen Có, especially to E. Flores, and to all the colleagues which help and assist during samplings and laboratory activities: A. Berasategui, E. Nahuelhual, R. Uibrig, D. Muro Schenfelt, M. Garcia, J. Chazarreta, C. López Abbate, C. Menéndez, A. Delgado, V. Guinder, F. Thomsen, R. Elicer, M. Tártara, E. Dos Santos, L. Diaz Briz, C. Rodriguez, and A. Puente Tapia. The collaboration with material of A. Conte, V. Arias and D. Tanzola is also much appreciated. Thanks are also due to A. Migotto for providing photographs and W. Melo for drawing the map. We appreciate the thorough review of the manuscript by Dr. M. Thiel and two anonymous referees.
GNG, AS, MSH and PDP contributed to draft the manuscript. MSD wrote the manuscript. GNG and AS participated in the identification of the species. JL contributed with biological material. All authors read and approved the final manuscript.
The authors declare that they have no competing interests.
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- Acha EM, Mianzan HW, Guerrero RA, Favero M, Bava J. Marine fronts at the continental shelves of austral South America: Physical and ecological processes. J Mar Syst. 2004;44:83–105.View ArticleGoogle Scholar
- Acha EM, Orduna M, Rodrigues K, Militelli MI, Braverman M. Caracterización de la zona de “El Rincón” (provincia de Buenos Aires) como área de reproducción de peces costeros. Revista de Investigación y Desarrollo Pesquero. 2012;21:31–43.Google Scholar
- Agassiz A. Halopsis ocellata. Proc Boston Soc Nat Hist. 1865;9:219–20.Google Scholar
- Balech E, Ehrlich MD. Esquema Biogeográfico del Mar Argentino. Revista de Investigación y Desarrollo Pesquero. 2008;19:45–75.Google Scholar
- Bastida RO, Torti MR. Estudio preliminar sobre las incrustaciones biológicas de Puerto Belgrano. LEMIT-Anales. 1971;3:47–75.Google Scholar
- Bastida RO, L’Hoste S, Spivak E, Adabbo H. Las incrustaciones biológicas de Puerto Belgrano. I. Estudio de la fijación sobre paneles mensuales, período 1971/72. Corrosión y Protección. 1977;8:1–23.Google Scholar
- Bayha KM, Dawson MN. New Family of Allomorphic Jellyfishes, Drymonematidae (Scyphozoa, Discomedusae), Emphasizes Evolution in the Functional Morphology and Trophic Ecology of Gelatinous Zooplankton. Biol Bull. 2010;219:249–67.View ArticleGoogle Scholar
- Blanco O. Enumeración sistemática y distribución geográfica preliminar de los Hidroides de la República Argentina. Suborden Athecata (Gymnoblastea, Anthomedusae), Thecata (Calyptoblastea, Leptomedusae) y Limnomedusae. Revista del Museo de La Plata. 1994;14:181–216.Google Scholar
- Bouillon J. Hydromedusae. In: Boltovskoy D, editor. South Atlantic Zooplankton. Leiden: Backhuys Publishers; 1999. p. 385–465.Google Scholar
- Bouillon J, Gravili C, Pagès F, Gili JM, Boero F. An introduction to Hydrozoa. Memoires du Museum National d’Histoire Naturelle. Publications Scientifiques, vol. 194. 2006. p. 591.Google Scholar
- Carcedo MC, Fiori SM, Piccolo MC, López Abbate MC, Bremec CS. Variations in macrobenthic community structure in relation to changing environmental conditions in sandy beaches of Argentina. Estuar Coast Shelf Sci. 2015;166:56–64.View ArticleGoogle Scholar
- Carozza C, Fernández Aráoz NC. Análisis de la actividad de la flota en el área de “El Rincón” dirigida al variado costero durante el período 2000-2008 y situación de los principales recursos pesqueros. INIDEP Informe técnico oficial N° 23/09. 2009.Google Scholar
- Chiaverano L, Mianzan H. Dinámica y estructura poblacional de Olindias sambaquiensis, Muller, 1861 (Limnomedusae, Olindiidae) durante su fase sexual en la zona de Bahía Blanca (Buenos Aires, Argentina). San Andrés Isla: IX Congreso Latinoamericano sobre Ciencias del Mar; 2001.Google Scholar
- Chiaverano L, Mianzan H, Ramírez F. Gonad development and somatic growth patterns of Olindias sambaquiensis (Limnomedusae, Olindiidae). Hydrobiologia. 2004;530–531:373–81.Google Scholar
- Delgado AL, Loisel H, Jamet C, Vantrepotte V, Perillo GME, Piccolo MC. Seasonal and inter-annual analysis of chlorophyll-a and inherent optical properties from satellite observations in the inner and mid-shelves of the south of Buenos Aires Province (Argentina). Remote Sens. 2015;7:11821–47.View ArticleGoogle Scholar
- Delgado AL, Menéndez MC, Piccolo MC, and Perillo GME. Hydrography of the inner continental shelf ’along the southwest Buenos Aires Province, Argentina: Influence of an estuarine plume on coastal waters. J Coastal Res. 2016. doi: http://dx.doi.org/10.2112/JCOASTRES-D-16-00064.1.
- Delhey K, Petracci PF. Aves marinas y costeras. In: Piccolo MC, Hoffmeyer MS, editors. Ecosistema del Estuario de Bahía Blanca. Bahía Blanca: EdiUNS; 2004. p. 203–20.Google Scholar
- Fewkes JW. Notes on acalephs from the Tortugas, with a description of new genera and species. In: Agassiz A, editor. Explorations of the surface fauna of the Gulf Stream, under the auspices of the U.S. Coast Survey. Bulletin of the Museum of comparative Zoölogy of Harvard College, vol. 9. 1882. p. 251–89.Google Scholar
- Gaitán EN. Distribución, abundancia y estacionalidad de Liriope tetraphylla (Hidromedusa, Trachymedusae) en el Océano Atlántico Sudoccidental y su rol ecológico en el estuario del Río de la Plata. MSc thesis. Mar del Plata: Universidad Nacional de Mar del Plata; 2004.Google Scholar
- Genzano G, Mianzan H, Bouillon J. Hydromedusae (Cnidaria: Hydrozoa) from the temperate southwestern Atlantic Ocean: a review. Zootaxa. 2008a;1750:1–18.Google Scholar
- Genzano GN, Mianzan HW, Diaz BL, Rodriguez CS. On the occurrence of Obelia medusa bloom and empirical evidence of an unusual Obelia and Amphisbetia hydroids shoreline massive accumulations. Lat Am J Aquat Res. 2008b;36:301–7.View ArticleGoogle Scholar
- Genzano GN, Giberto D, Schejter L, Bremec C, Meretta P. Hydroid assemblages from the Southwestern Atlantic Ocean (34–42° S). Mar Ecol. 2009a;30:33–46.View ArticleGoogle Scholar
- Genzano GN, Rodriguez C, Pastorino G, Mianzan HW. The hydroid and medusa of Corymorpha januarii in temperate waters of the Southwestern Atlantic Ocean. Bull Mar Sci. 2009b;84:229–35.Google Scholar
- Guinder VA, Popovich CA, Molinero JC, Marcovecchio J. Phytoplankton summer bloom dynamics in the Bahía Blanca Estuary in relation to changing environmental conditions. Cont Shelf Res. 2013;52:150–8.View ArticleGoogle Scholar
- Hoffmeyer MS. Zooplancton del área interna de Bahía Blanca (Buenos Aires - Argentina). I- Composición faunística. Hist Nat. 1983;3:73–94.Google Scholar
- Hoffmeyer MS. Algunas observaciones sobre la alimentación de Mnemiopsis mccradyi Mayer (Ctenophora-Lobata). Iheringia Serie Zoologia. 1990;70:55–65.Google Scholar
- Hoffmeyer MS, Barría de Cao MS. Zooplankton assemblage from a tidal channel in the Bahía Blanca Estuary. Braz J Oceanogr. 2007;55:97–107.View ArticleGoogle Scholar
- Hoffmeyer MS, Mianzan HW. Macrozooplancton del estuario de Bahía Blanca y aguas adyacentes. In: Piccolo MC, Hoffmeyer MS, editors. Ecosistema del Estuario de Bahía Blanca. Bahía Blanca: EdiUNS; 2004. p. 143–51.Google Scholar
- Hoffmeyer MS, Menéndez MC, Biancalana F, Nizovoy AM, Torres ER. Ichthyoplankton spatial pattern in the inner shelf off Bahía Blanca Estuary, SW Atlantic Ocean. Estuar Coast Shelf Sci. 2009;84:383–92.View ArticleGoogle Scholar
- Kokelj F, Mianzan H, Avian M, Burnett JW. Dermatitits due to Olindias sambaquiensis: a case report. Cutis. 1993;51:339–42.Google Scholar
- Kramp PL. Synopsis of the medusa of the world. J Mar Biol Assoc U K. 1961;40:1–469.Google Scholar
- Lucas CH, Graham WM, Widmer C. Jellyfish life histories: role of polyps in forming and maintaining scyphomedusa populations. Adv Mar Biol. 2012;63:133–96.View ArticleGoogle Scholar
- Macchi G, Mianzan H, Cristiansen H, Ramírez F. Histology of the gonadal cycle of the stinging hydromedusa Olindias sambaquiensis, Muller, 1861 at Blanca Bay, Argentina. Bolletino della Societa Adriatica di Scienze. 1995;76:59–68.Google Scholar
- Marques AC, Haddad Jr V, Rodrigo L, Marques-da-Silva E, Morandini AC. Jellyfish (Chrysaora lactea, Cnidaria, Semaeostomeae) aggregations in southern Brazil and consequences of stings in humans. Lat Am J Aquat Res. 2014;42:1192–9.View ArticleGoogle Scholar
- Mayer A. Medusae of the world. Hydromedusae. 1910;1:1–230.Google Scholar
- Menéndez MC, Fernández Severini MD, Buzzi NS, Piccolo MC, Perillo GME. Assessment of surf zone environmental variables in a southwestern Atlantic sandy beach (Monte Hermoso, Argentina). Environ Monit Assess. 2016;188:495–507. doi:10.1007/s10661-016-5495-9.View ArticleGoogle Scholar
- Mianzan HW. Estudio sistemático y bioecológico de algunas medusas Scyphozoa de la región subantártica. Phd thesis. La Plata: Universidad Nacional de La Plata; 1986a.Google Scholar
- Mianzan HW. Beroe ovata en aguas de la Bahía Blanca, Argentina (Ctenophora). Spheniscus. 1986b;2:29–32.Google Scholar
- Mianzan HW. Las medusas Scyphozoa de la Bahía Blanca. Boletim do Instituto Oceanografico São Paulo. 1989a;37:29–32.View ArticleGoogle Scholar
- Mianzan HW. Sistemática y zoogregrafía de Scyphomedusae en aguas neríticas argentinas. Investigaciones Marinas CICIMAR. 1989b;4:15–34.Google Scholar
- Mianzan HW. Distribución de Olindias sambaquiesis Müller, 1861 (Hydrozoa, Limnomedusae) en el Atlántico Sudoccidental. Iheringia Série Zoologia. 1989c;69:155–7.Google Scholar
- Mianzan HW. Ctenophora. In: Boltovskoy D, editor. South Atlantic Zooplankton. Leiden: Blackhuys Publishers; 1999. p. 561–73.Google Scholar
- Mianzan HW, Cornelius PFS. Cubomedusae and Scyphomedusae. In: Boltovskoy D, editor. South Atlantic Zooplankton. Leiden: Backhuys Publishers; 1999. p. 513–59.Google Scholar
- Mianzan HW, Guerrero RA. Environmental patterns and biomass distribution of gelatinous macrozooplankton. Three study cases in the South-Western Atlantic Ocean. Sci Mar. 2000;64:215–24.View ArticleGoogle Scholar
- Mianzan HW, Ramírez FC. Olindias sambaquiensis stings in the South West Atlantic. In: Williamson JAH, Fenner PJ, Burnett JW, Rifkin JF, editors. Venomous and poisonous marine animals: a medical and biological handbook. Brisbane: University of New South Wales Press; 1996. p. 206–8.Google Scholar
- Mianzan HW, Sabatini M. Estudio preliminar sobre distribución y abundancia de Mnemiopsis maccradyi en el estuario de Bahía Blanca (Ctenophora). Spheniscus. 1985;1:53–68.Google Scholar
- Mianzan HW, Zamponi MO. Estudio bioecológico de Olindias sambaquiensis Müller, 1861 (Limnomedusae, Olindiidae) en el área de Monte Hermoso. II. Factores meteorológicos que influyen en su aparición. Iheringia Série Miscelanea. 1988;2:63–8.Google Scholar
- Mianzan HW, Mari N, Prenski B, Sanchez F. Fish predation on neritic ctenophores from the Argentine continental shelf: A neglected food resource? Fish Res. 1996;27:69–79.View ArticleGoogle Scholar
- Mianzan HW, Sorarrain D, Burnett JW, Lutz LL. Mucocutaneous junctional and flexural paresthesias caused by the holoplanktonic trachymedusae Liriope tetraphylla. Dermatology. 2000;201:46–8.View ArticleGoogle Scholar
- Mianzan HW, Fenner PJ, Cornelius PFS, Ramírez C. Vinegar as disarming agent to prevent further discharge of the nematocysts of the stinging hydromedusa Olindias sambaquiensis. Cutis. 2001;6:45–8.Google Scholar
- Migotto AE, Marques AC, Morandini AC, da Silveira FL. Checklist of the Cnidaria Medusozoa of Brazil. Biota Neotropica. 2002;2:1–31.View ArticleGoogle Scholar
- Miyake H, Terazaki M, Kakinuma Y. On the polyps of the common jellyfish Aurelia aurita in Kagoshima Bay. J Oceanogr. 2002;58:451–9.View ArticleGoogle Scholar
- Morandini AC, da Silveira FL, Jarms G. The life cycle of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) with notes on the scyphistoma stage of three other species. Hydrobiologia. 2004;530:347–54.View ArticleGoogle Scholar
- Nagata RM, Nogueira M, Haddad MA. Faunistic survey of Hydromedusae (Cnidaria, Medusozoa) from the coast of Paraná State, Southern Brazil. Zootaxa. 2014;3768:291–326.View ArticleGoogle Scholar
- Negrin VL, Botté SE, Pratolongo PD, González TG, Marcovecchio JE. Ecological processes and biogeochemical cycling in salt marshes: synthesis of studies in the Bahía Blanca estuary (Argentina). Hydrobiologia. 2016;774:217–35.View ArticleGoogle Scholar
- Péron F, Lesueur CA. Tableau des caractères génériques et spécifiques de toutes les espèces de méduses connues jusqu’à ce jour. Annales du Muséum National d’histoire Naturelle de Paris. 1810;14:325–66.Google Scholar
- Pizarro N, Piccolo MC. Socio-economic issues in the Bahía Blanca Estuary. In: Neves R, Baretta J, Mateus M, editors. Perspectives on integrated coastal zone management in South America. Lisbon: IST Press; 2008. p. 287–300.Google Scholar
- Popovich CE, Marcovecchio JE. Spatial and temporal variability of phytoplankton and environmental factors in a temperate estuary of South America (Atlantic coast, Argentina). Cont Shelf Res. 2008;28:236–44.View ArticleGoogle Scholar
- Pratolongo P, Mazzon C, Zapperi G, Piovan MJ, Brinson MM. Land cover changes in tidal salt marshes of the Bahía Blanca estuary (Argentina) during the past 40 years. Estuar Coast Shelf Sci. 2013;133:23–31.View ArticleGoogle Scholar
- Ramírez FC, Zamponi MO. Medusas de la plataforma bonaerense y sectores adyacentes. Physis. 1980;39:33–48.Google Scholar
- Ramírez FC, Zamponi MO. Hydromedusae. In: Boltovskoy D, editor. Atlas del Zooplancton del Atlántico Sudoccidental y Métodos de Trabajo con el Zooplancton Marino. Mar del Plata: Publicaciones Especiales de INIDEP; 1981. p. 443–69.Google Scholar
- Rodriguez CS. Distribución, abundancia y estacionalidad de Mitrocomella frigida y Eucheilota ventricularis (Hydrozoa, Leptomedusae) en el Atlántico Sudoccidental (33-55° S). MSc thesis. Mar del Plata: Universidad Nacional de Mar del Plata; 2006.Google Scholar
- Rodriguez C. Hidromedusas del Atlántico Sudoccidental: biodiversidad y patrones de distribución. PhD thesis. Mar del Plata: Universidad Nacional de Mar del Plata; 2012.Google Scholar
- Rodriguez C, Genzano G, Mianzan H. First record of Eutonina scintillans Bigelow, 1909 (Hydrozoa: Leptomedusae: Eirenidae) in temperate waters of the southwestern Atlantic Ocean. Investig Mar. 2007;35:135–8.View ArticleGoogle Scholar
- Rodriguez C, Miranda TP, Marques AC, Mianzan H, Genzano G. The genus Hybocodon (Cnidaria, Hydrozoa) in the southwestern Atlantic Ocean, with a revision of Hybocodon species recorded in the area. Zootaxa. 2012;3523:39–48.Google Scholar
- Schiariti A, Dutto MS, Morandini AC. Diversity and spatial distribution of Scyphomedusae and Cubomedusae from Argentina and Uruguay. Barcelona: 5th International Jellyfish Bloom Symposium, May 30-June 3 2016; 2016. p. 152.Google Scholar
- Torrey HB. The Leptomedusae of the San Diego region. Univ Calif Publ Zool. 1909;6:11–31.Google Scholar
- Tronolone VB, Morandini AC, Migotto AE. On the occurrence of scyphozoan ephyrae (Cnidaria, Scyphozoa, Semaeostomeae and Rhizostomeae) in the southeastern brazilian coast. Biota Neotropica. 2002;2:1–18.View ArticleGoogle Scholar
- Vaquero M del C, Rodríguez C, Trellini M, de Bulnes Cernadas M, Marcilese J. El turismo residenciado en Monte Hermoso. In: Proceedings of IV Jornadas interdisciplinarias del sudoeste bonaerense, Universidad Nacional del Sur, 7-9 September 2006. Bahía Blanca: Cuestiones políticas, socioculturales y económicas en el sudoeste bonaerense; 2007. p. 201–6.Google Scholar
- Williams Jr EH, Bunkley-Williams L, Lilyestrom CG, Larson RJ, Engstrom NA, Ortiz-Corps EAR, Timber JH. A population explosion of the rare tropical/subtropical purple sea mane, Drymonema dalmatinum, around Puerto Rico in the summer and fall of 1999. Caribb J Sci. 2001;37:127–30.Google Scholar
- Zamponi MO, Mianzan HW. La mecánica de captura y alimentación de Olindias sambaquiensis Müller, 1861 (Limnomedusae) en el medio natural y en condiciones experimentales. Hist Nat. 1985;5:269–78.Google Scholar