Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic)

Violić, Ivana; Kogovšek, Tjaša; Pestorić, Branka; Mačić, Vesna; Beran, Ivana Milić

doi:10.32582/aa.60.1.2

Cited by 7 publications

(7 citation statements)

References 42 publications

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“…To compare the differences in medusan abundance between the two regions (central and eastern), a non-parametric Mann -Whitney test (ɀ) was used (Pestorić et al, 2012). This test was also used to compare the variability of environmental parameters.…”

Section: Discussionmentioning

confidence: 99%

“…[1]: Dallot et al, 1988 ;[2]: Goy et al, 1991;[3]: Boero & Bouillon, 1993;[4]: Buecher & Gibbons, 1999;[5]:Daly Yahia et al, 2003;[6]: Benović et al, 2004;[7]: Sabatés et al, 2010;[8]: Touzri et al, 2010Touzri et al, , 2012[9]: Pestorić et al, 2012;[10]: Ounissi et al, 2016;[11] of the Algerian coast. Holoplanktonic species are known to be most abundant in open waters (Trachymedusae and Narcomedusae).…”

Section: Dominant Populations and Their Variabilitymentioning

confidence: 99%

“…In the Mediterranean Sea, jellyfish have been most closely studied in the northwestern basin (Goy, 1997;Buecher & Gibbons, 1999;Sabatés et al, 2010;Goy et al, 2016) and the eastern basin (Batistic et al, 2007;Lučić et al, 2009;Pestorić et al, 2012). In the southwestern Mediterranean Sea, there have been few studies and investigations.…”

Section: Introductionmentioning

confidence: 99%

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Species composition and distribution of Medusae (Cnidaria: medusozoa) in the Algerian coast between 2°e and 7°e (SW Mediterranean Sea)

Aldjia

Hafferssas

2019

Medit. Mar. Sci.

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The composition and abundance distribution of the Medusae community of the Algerian coast (between 2°E to 7°E) were investigated during autumn 2014. Zooplankton sampling was performed in the upper layer (0-100 m) at 14 stations. Fourteen species related to Hydromedusae and Scyphomedusae were identified. The Hydromedusae populations were represented by Leptomedusae (5 species), Narcomedusae (3 species), Trachymedusae (3 species) and Anthomedusae (2 species). Some species such as Cirrholovenia tetranema and Cunina globosa were newly recorded at the sampling areas. The total abundance of Medusae was under 10 individuals.m-3. Maxima of concentrations (> 4 ind.m-3) were localized at the central coast between Bou Ismail (2.6° E) and Algiers (3.2° E) Bays. Here, the populations of Aglaura hemistoma and Liriope tetraphylla were dominant (≈ 40%). A quantitative variability was showed between two populations groups (Liriope tetraphylla) and (Pelagia noctiluca and Rhopalonema velatum) characterized respectively the central region and the eastern region. Their distributions were analyzed in relation to environmental parameters (temperature, salinity, and chlorophyll-a) and the interaction with Copepods prey.

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Section: Discussionmentioning

confidence: 99%

Section: Dominant Populations and Their Variabilitymentioning

confidence: 99%

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Species composition and distribution of Medusae (Cnidaria: medusozoa) in the Algerian coast between 2°e and 7°e (SW Mediterranean Sea)

Aldjia

Hafferssas

2019

Medit. Mar. Sci.

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“…Since the 1980s, the Atlantic species M. atlantica has gradually colonized the western Mediterranean region. It spread to the Ligurian Sea (Licandro et al, 2012), the Catalan Sea (Guerrero et al, 2016) and the Adriatic Sea (Batistić et al, 2007;Pestorić et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Distribution and species composition of planktonic cnidarians in the Algerian coastal waters (SW Mediterranean Sea)

Kherchouche-Ait Ouadour,

Khames,

Hafferssas

2024

Acta Adriat. (Online)

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This study presents an inventory of planktonic cnidarian species collected in Algerian coastal waters (1°10’00” W - 6°52’37” E and 35°37’42” N - 37°01’16” N) from May 2012 to February 2017. The aim was to analyse the qualitative distribution and identify the main components of this gelatinous fauna in different coastal ecosystems in western, central and eastern regions. A total of 60 taxa of planktonic cnidarians were identified, including 57 hydrozoans and three scyphozoans. The class Hydrozoa were represented by 34 hydromedusae, primarily belonging to orders Anthoathecata (15 taxa) and Siphonophorae (23 taxa). Several reported hydrozoan species were recorded for the first time in the southwestern Mediterranean Sea. These new regional records include the hydromedusae Kantiella enigmatica, Leuckartiara octona, Proboscidactylaornata, Cunina globosa, Lovenella cirrata, Cirrholovenia tetranema, Phialella quadrata, Homoeonema platygonon and the siphonophore Forskalia contorta. Seasonal fluctuations were observed in biodiversity, with the highest species richness in spring and summer. The most common species are the calycophorous siphonophores Abylopsis tetragona, Muggiaea atlantica, Lensia subtilis Muggiaea kochii and the holoplanktonic medusae Aglaura hemistoma, Rhopalonema velatum, Solmundella bitentaculata, Liriope tetraphylla and Pelagia noctiluca. The species’ occurrence frequency exhibited seasonal and spatial variability. These distribution patterns were primarily determined by meroplanktonic hydrozoans (Anthoathecata and Leptothecata).

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“…Monthly values represent the highest category of jellyfish occurrence in a given month, regardless of the number of observations. Several authors have already used similar or the same methods to present the results of macrozooplankton research (GILI et al, 2008;FUENTES et al, 2009;VIOLIĆ et al, 2019;LEONI et al, 2021;PESTORIĆ et al, 2021).…”

Section: Aequorea Cf Forskalea Datamentioning

confidence: 99%

The occurrence of the jellyfish Aequorea cf. forskalea in the Adriatic Sea

Malej

Supić

Violić

et al. 2022

Acta Adriat. (Online)

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Jellyfish are becoming an increasingly important component of studies of the global marine environment, as their frequent mass phenomena affect ecosystem performance and have economic and health consequences. Recent research has focused primarily on mass occurrences of scyphozoans and ctenophores, while less attention has been paid to hydromedusae blooms, which can also have significant impacts on the marine ecosystem with economic consequences. Like many members of the Scyphozoa and Ctenophora, Aequorea species can be numerous and form blooms. Based on surveys from 2000 to 2020 and information provided by marine professionals, we examine the (multiannual) variability, seasonality, and spatial distribution patterns of the poorly studied temperate species Aequorea cf. forskalea (Hydrozoa: Leptothecata). We hypothesized that this macrogelatinous jellyfish with a bipartite life cycle (benthic polyps and planktonic medusae) is sensitive to seasonal and long-term temperature fluctuations, particularly because temperature has been shown to play a critical role in mediating transitions in the life cycle of cnidarians. The cold-water affinity of A. cf. forskalea was confirmed by a significant negative correlation with temperature and the most frequent occurrence during the winter-spring period. For the northern Adriatic (Gulf of Trieste), sea temperature data and semi-quantitative plankton data are available for the first decade of the 20th century, allowing comparison of the historical data (1900-1911) with our current data set. Compared to historical records, the current occurrence of A. cf. forskalea differs significantly. With the warming of the northern Adriatic Sea since the beginning of the 20th century, the current phenology of A. cf. forskalea has changed, probably related to the delayed production of medusae by hydroids in autumn, the absence of medusae in this season and their less frequent occurrence in winter.

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Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic)

Cited by 7 publications

References 42 publications

Species composition and distribution of Medusae (Cnidaria: medusozoa) in the Algerian coast between 2°e and 7°e (SW Mediterranean Sea)

Species composition and distribution of Medusae (Cnidaria: medusozoa) in the Algerian coast between 2°e and 7°e (SW Mediterranean Sea)

Distribution and species composition of planktonic cnidarians in the Algerian coastal waters (SW Mediterranean Sea)

The occurrence of the jellyfish Aequorea cf. forskalea in the Adriatic Sea

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