Habitat, morphology and trophism of Tritonia callogorgiae sp. nov., a large nudibranch inhabiting Callogorgia verticillata forests in the Mediterranean Sea

Chimienti, Giovanni; Angeletti, Lorenzo; Furfaro, Giulia; Canese, Simonepietro; Taviani, Marco

doi:10.1016/j.dsr.2020.103364

Cited by 22 publications

(12 citation statements)

References 38 publications

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“…Our inventory of Mediterranean nudibranchs is rapidly growing as new species are continuously added, including cryptic species within historically accepted species (Furfaro and Trainito, 2017;Korshunova et al, 2019;Chimienti et al, 2020;Furfaro and Mariottini, 2020). Nowadays, the integrative approach combining morphological and molecular characters is commonly used in nudibranch taxonomy.…”

Section: Discussionmentioning

confidence: 99%

“…Mediterranean marine biodiversity is still underestimated and new cryptic species continue to be identified, described, and added to our inventory of marine fauna (Calvo et al, 2009;Uriz et al, 2017;González-Castellano et al, 2020;Furfaro et al, 2021). Our knowledge on diversity of groups such as nudibranchs is recently increasing as demonstrated by the number of studies published in the last years (Cella et al, 2016;Furfaro and Trainito, 2017;Korshunova et al, 2017Korshunova et al, , 2019Furfaro et al, 2018;Chimienti et al, 2020;Furfaro and Mariottini, 2020). In nudibranchs, few morphological characters are available, and the same chromatic pattern is often shared between closely related species, thereby making difficult the species identification based on morphology alone (Johnson and Gosliner, 2012;Furfaro et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Variation and Diagnostic Power of the Internal Transcribed Spacer 2 in Mediterranean and Atlantic Eolid Nudibranchs (Mollusca, Gastropoda)

et al. 2021

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Mediterranean marine biodiversity is still underestimated especially for groups such as nudibranchs. The identification of nudibranchs taxa is challenging because few morphological characters are available and among them chromatic patterns often do not align with species delimitation. Molecular assessments helped unveiling cryptic diversity within nudibranchs and have been mostly based on mitochondrial markers. Fast evolving nuclear markers are much needed to complement phylogenetic and systematic assessments at the species and genus levels. Here, we assess the utility of the nuclear Internal Transcribed Spacer 2 (ITS2) to delimit species in the eolid nudibranchs using both primary and secondary structures. Comparisons between the variation observed at the ITS2 and at the two commonly used mitochondrial markers (COI and 16S) on 14 eolid taxa from 10 genera demonstrate the ability of ITS2 to detect congeneric, closely related, species. While ITS2 has been fruitfully used in several other mollusc taxa, this study represents the first application of this nuclear marker in nudibranchs.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variation and Diagnostic Power of the Internal Transcribed Spacer 2 in Mediterranean and Atlantic Eolid Nudibranchs (Mollusca, Gastropoda)

et al. 2021

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“…Videos were analysed using Adobe Premiere Pro software. Sampling units of 2.5 ± 0.2 m 2 were defined along each transect, according to the minimal area used for mesophotic benthic communities in the Mediterranean Sea 8,[53][54][55] . Density (living colonies m −2 ) and mortality (dead colonies m −2 ) of P. clavata were calculated for each sampling unit and expressed as mean ± standard error.…”

Section: Study Areamentioning

confidence: 99%

Effects of global warming on Mediterranean coral forests

Chimienti

Padova

Adamo

et al. 2021

Sci Rep

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The effects of global warming have been addressed on coral reefs in tropical areas, while it is still unclear how coral forests are reacting, particularly at temperate latitudes. Here we show how mesophotic coral forests are affected by global warming in the Mediterranean Sea. We highlight how the current warming trend is causing the lowering of the thermocline and it is enhancing mucilaginous blooms. These stressors are facilitating a massive macroalgal epibiosis on living corals, here reported for the first time from different areas in the Western and Central Mediterranean Sea. We provide a focus of this phenomenon at Tremiti Islands Marine Protected Area (Adriatic Sea), were the density of the endemic red gorgonian Paramuricea clavata decreased of up to 47% in 5 years, while up to the 96% of the living corals showed signs of stress and macroalgal epibiosis. Only populations deeper than 60 m depth were not touched by this emerging phenomenon. Spot observations performed at Tuscan Archipelago and Tavolara Marine Protected Area (Tyrrhenian Sea) suggest that this this combination of stressors is likely widespread at basin scale.

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“…An area of lithified sediment of about 10 km 2 located at a water depth of 430-490 m on the slope of a slump scar is most likely due to the presence of a carbonate chimney forest [67]. This area constituted by hard substrates hosts coral forests, mainly typified by Callogorgia verticllata [56,68] and CWCs best embodied by Madrepora oculata and Desmophyllum pertusum, [56,67].…”

Section: Eastern Sidementioning

confidence: 99%

Benthic Habitat Map of the Southern Adriatic Sea (Mediterranean Sea) from Object-Based Image Analysis of Multi-Source Acoustic Backscatter Data

et al. 2021

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A huge amount of seabed acoustic reflectivity data has been acquired from the east to the west side of the southern Adriatic Sea (Mediterranean Sea) in the last 18 years by CNR-ISMAR. These data have been used for geological, biological and habitat mapping purposes, but a single and consistent interpretation of them has never been carried out. Here, we aimed at coherently interpreting acoustic data images of the seafloor to produce a benthic habitat map of the southern Adriatic Sea showing the spatial distribution of substrates and biological communities within the basin. The methodology here applied consists of a semi-automated classification of acoustic reflectivity, bathymetry and bathymetric derivatives images through object-based image analysis (OBIA) performed by using the ArcGIS tool RSOBIA (Remote Sensing OBIA). This unsupervised image segmentation was carried out on each cruise dataset separately, then classified and validated through comparison with bottom samples, images, and prior knowledge of the study areas.

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Habitat, morphology and trophism of Tritonia callogorgiae sp. nov., a large nudibranch inhabiting Callogorgia verticillata forests in the Mediterranean Sea

Cited by 22 publications

References 38 publications

Variation and Diagnostic Power of the Internal Transcribed Spacer 2 in Mediterranean and Atlantic Eolid Nudibranchs (Mollusca, Gastropoda)

Variation and Diagnostic Power of the Internal Transcribed Spacer 2 in Mediterranean and Atlantic Eolid Nudibranchs (Mollusca, Gastropoda)

Effects of global warming on Mediterranean coral forests

Benthic Habitat Map of the Southern Adriatic Sea (Mediterranean Sea) from Object-Based Image Analysis of Multi-Source Acoustic Backscatter Data

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