Hydromedusae (Cnidaria) of the Chilean southern channels (from the Corcovado Gulf to the Pulluche-Chacabuco Channels)

Palma, Sergio; Apablaza, Pedro; Silva, Nelson

doi:10.3989/scimar.2007.71n165

Cited by 29 publications

(42 citation statements)

References 11 publications

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“…Thirty jellyfish species were recorded at the Aysén region, which involves the area between the Boca del Guafo and the Elefantes Fjord, a quantity very similar (30 species) to that recorded in the same area in spring 2002 and 2003 (Table 4; Palma et al, 2007aPalma et al, , 2007b. Seven out of the total species identified correspond to new records for the study area (Bougainvillia macloviana, Hybocodon chilensis, Hydractinia tenuis, Laodicea pulcra, L. undulata, Modeeria rotunda and Chrysaora plocamia) ( Table 1).…”

Section: Jellyfish Species Compositionmentioning

confidence: 99%

“…and Solmundella bitentaculata (Villenas et al, 2009a;Palma et al, 2011). In Aysén region, the available data exclusively involve spring and indicate the presence of 31 species, with a dominance of Amphogona apicata, Clytia simplex, Lizzia blondina (= Hydractinia minuta), Proboscidactyla ornata and Solmundella bitentaculata (Palma et al, 2007a(Palma et al, , 2007b. These regions are separated by the Boca de Guafo (43º39'S), which corresponds to the main water exchange route between the Pacific Ocean and the inner water ecosystem.…”

Section: Introductionmentioning

confidence: 99%

“…On one hand, the northern microbasin is about 250 m deep, and communicates with the adjacent Pacific through the Boca de Guafo, where more saline waters penetrate and mix with less saline waters coming from precipitations, rivers, and glacial contributions (Palma & Silva, 2004;Palma et al, 2007aPalma et al, , 2007bSilva & Palma, 2008). This constant exchange has allowed the entry of oceanic planktonic species that have successfully colonized the inner waters (Palma, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…The phylum Cnidaria has been widely studied in the Chiloé region (Galea, 2007;Galea et al, 2007;Palma et al, 2007aPalma et al, , 2007bPalma et al, , 2011Villenas et al, 2009a), which is characterized by high biological production reflected on high values of chlorophyll-a (González et al, 2011) and zooplanktonic biomass, mainly supported by copepods, euphausiids and carnivorous jellyfish (Palma & Silva, 2004). In this area, strong seasonal fluctuations have been established in jellyfish abundance in winter and spring, observing 33 species with a summer dominance of Amphogona apicata, Bougainvillia muscoides, Clytia simplex, Cunina peregrina, Hydractinia tenuis, Obelia spp.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal and vertical distribution of medusae in Aysen region, southern Chile

Bravo

Palma

Silva

2011

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ABSTRACT. Medusae collected in winter and spring 2007 were analyzed in a longitudinal transect made between the Boca de Guafo and Elefantes Fjord, southern Chile. A total of 30 species were identified, Hydromedusae (29) and Scyphozoa (1), where Bougainvillia macloviana, Hybocodon chilensis, Hydractinia tenuis, Laodicea pulcra, L. undulada, Modeeria rotunda and Chrysaora plocamia represent new records for the area. A significant increase in the jellyfish abundance was higher in spring than in winter (fourteen times higher), with 68% of common species in both seasons. The specific diversity was slightly higher in winter (3.4 bits) than spring (3.2 bits), the species richness instead was higher in spring than in winter, with a mean of 5 and 12 species, respectively. The vertical distribution showed the presence of surface (H. borealis), deep (A. apicata, C. peregrina and R. velatum) and wide bathymetric distribution (B. muscoides and B. muscus) species. Results from the area were compared with previous results (2002)(2003) thus proving that most species identified are common in southern Chilean fjords and channels.

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Section: Jellyfish Species Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal and vertical distribution of medusae in Aysen region, southern Chile

Bravo

Palma

Silva

2011

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“…Deleterious effect of gelatinous zooplankton on aquaculture has becoming increased attention in the last decades; which on one hand has being linked to climate-driven variability (Condon et al, 2012) and to the proliferation of settlements and increased human activities in coastal areas (Purcell, 2012). The inner sea of Chiloé is not an exception, where proliferations of the scyphomedusa Chrysaora plocamia and Phacellophora catschatica have affected salmon farming installations (Palma et al, 2007;Bravo et al, 2011). Unfortunately, and as same as most cases, reports as same as impacts are mainly based on anecdotic information given by local farmers (see Mianzan et al, 2014), and more reliable information based on scientific orientated approaches are extremely scarce.…”

Section: Effect On Aquaculturementioning

confidence: 99%

Massive salp outbreaks in the inner sea of Chiloe Island (Southern Chile): possible causes and ecological consequences

Giesecke¹,

Clément²,

Garces-Vargas³

et al. 2014

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ABSTRACT. During 2010 several massive salp outbreaks of the Subantarctic species Ihlea magalhanica were recorded in the inner sea of Chiloé Island (ISCh, Southern Chile), affecting both phytoplankton abundance and salmon farmers by causing high fish mortality. First outbreaks were recorded during February 2010 when Ihlea magalhanica reached up to 654,000 ind m -3 close to the net pens in Maillen Island and consecutive outbreaks could be followed during March and from October to November 2010. One month prior to the first recorded salp outbreak, the adjacent oceanic region and ISCh showed a sharp decline of ca. 1.0ºC in sea surface temperature and an atypical pattern of oceanic sea surface currents, changing from a predominantly meridional (northward) to a zonal (eastward) direction, probably causing a massive Subantarctic Water parcel to enter the ISCh. During the outbreaks, surface chlorophyll concentration decreased from an historical mean of 13.8 to less than 4 mg Chl-a m -3, and did not return to normal conditions throughout the entire year, and similar results were also observed in phytoplankton abundance. The abundance of salp aggregations were highest close to the salmon net pens, which acted as physical barriers, and may have favored the successful reproduction and persistence of the outbreaks during 2010. The possible impact of these outbreaks on phytoplankton quality and quantity, as well as potential scenarios for the development of further outbreaks is discussed.

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Chrysaora plocamia: A Poorly Understood Jellyfish from South American Waters

et al. 2013

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Blooms and strandings of Chrysaora plocamia are reported to occur along both Atlantic and Pacifi c South American coasts. First described in Peruvian waters by Lesson (1830) almost two centuries ago as Cyanea plocamia , there is surprisingly little ecological information about this conspicuous animal. This chapter reviews current knowledge about C. plocamia biology and ecology, its relationship with pelagic fi sheries and climate and the problems blooms cause in the Humboldt Current and Patagonian shelf ecosystems. Chrysaora plocamia has important ecological roles, including trophic and symbiotic interactions with fi sh and sea turtles. Population variability has a clear relationship with climate where phases of high C. plocamia biomass were associated with El Niño events occurring during warm "El Viejo" regimes. Interestingly, their estimated biomass occasionally approached those of sardines or anchovies. This large jellyfi sh negatively affects human industries in the region when abundant, including fi sheries, aquaculture, desalination plants and tourism. Understanding relationships between jellyfi sh blooms and environmental drivers (e.g. ENSO, regime shifts) should allow forecasting of the jellyfi sh abundance and potential vulnerabilities such that resource managers and industrial fi sheries owners may prepare for costly outbreaks.

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Hydromedusae (Cnidaria) of the Chilean southern channels (from the Corcovado Gulf to the Pulluche-Chacabuco Channels)

Cited by 29 publications

References 11 publications

Seasonal and vertical distribution of medusae in Aysen region, southern Chile

Seasonal and vertical distribution of medusae in Aysen region, southern Chile

Massive salp outbreaks in the inner sea of Chiloe Island (Southern Chile): possible causes and ecological consequences

Chrysaora plocamia: A Poorly Understood Jellyfish from South American Waters

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