A new species of Cerapopsis (Amphipoda: Corophiidea: Kamakidae) from the Strait of Messina, central Mediterranean Sea

Wolf

Infantini

et al. 2020

Zootaxa

797

The present study describes a new species of spionid polychaete, Streblospio eridani n. sp., from the Italian coasts of the Northern Adriatic Sea (Mediterranean Sea). This new spionid species was recorded from shallow lagoon and marine habitats: the soft bottoms of the Sacca di Goro (Po River Delta), on October 2017, and the Lido di Dante (Emilia Romagna), between 2016 and 2017. The re-assessment of spionid specimens from other lagoon systems (the Valli di Comacchio and the Valle di Gorino) led us to recognize the presence of this species in the northern Adriatic Sea since 2009. Streblospio eridani n. sp. had low occurrence and density at the marine site Lido di Dante and at the lagoon sites Valli di Comacchio and Valle di Gorino; whereas it reached the highest density of 21,213.3 ind. m-2 at the Sacca di Goro. Morphologically this new species is characterized by dorsal (occipital) papilla on the first chaetiger, sabre chaetae and hooded hooks first appearing on chaetigers 7, hooks with 4-5 pairs of small secondary teeth, pygidium with ventral lappets, and brooding branchiate structures between chaetigers 13 and 28. In the phylogenetic reconstruction, based on the mitochondrial cytochrome c oxidase subunit I (COI) gene, the Adriatic taxon results clearly indicate that this is distinct from the other species of the genus and formed a well-supported clade with other Streblospio sp. specimens from India. Nucleotide divergences calculated between the Adriatic specimens and the other Streblospio species are higher than the intraspecific range reported for the genus and support the description of a new species. Morphological characters important for differentiation of the new species herein described from congeneric species are discussed and an updated key for Streblospio species is provided.

Section: Methodsmentioning

confidence: 99%

A new species of Streblospio (Polychaeta: Spionidae) from the northern Adriatic Sea (Mediterranean Sea)

Wolf

Infantini

et al. 2020

Zootaxa

797

“…It is unique thanks to the shape of its landscape, and its invaluable natural and historical features (thalassographic, seismic, biological). The Strait of Messina has been recognised a separate Mediterranean biogeographic microsector inhabited by rich benthic communities and some peculiar assemblages that are unknown in other Mediterranean regions (Bianchi 2007): although small, this area harbours a wealth of biogeographic peculiarities, including Pliocene Atlantic remnants and local endemisms (Fredj & Giaccone 1995;Munari 2014).…”

Section: Study Areamentioning

confidence: 99%

A new species ofProtodorvillea(Polychaeta: Dorvilleidae) from the Western Mediterranean Sea

The European Zoological Journal

Ebbe

2019

Self Cite

, from 6 to 38 m depth. Protodorvillea artemidis sp. nov. is characterised by four eyes, two short clavate antennae, dorsal and ventral cirri from the first parapodium, a long subacicular falciger reminiscent of that of Dorvillea, and the simultaneous occurrence of supraacicular and subacicular cultriform chaetae with serrated edges. Protodorvillea artemidis sp. nov. is similar to P. kefersteini (McIntosh, 1869) but differs from this species mainly by morphological characteristics of prostomium, mouth parts, and supraacicular and subacicualar chaetae. Morphological characters important for differentiation of the new species herein described from congeneric species are discussed. The description of P. artemidis sp. nov. helps to improve the knowledge on the diversity of Mediterranean invertebrates, and specifically on the family Dorvilleidae, which is still poorly known and includes many opportunistic species, early indicators of pollution.

“…Several specimens were dehydrated and goldcoated for scanning electron microscope (SEM) study following the standard procedure described in Munari (2014).…”

Section: Specimens Ofmentioning

confidence: 99%

“…Elefsis Bay, Saronikos Gulf, the Kyklades and Crete) on sandy, muddy or mixed sediments, as well as biogenic detritus down to 90 m depth (Simboura 1996;Simboura et al 2010). More recently C. corona was reported from the Turkish coasts to 100 m in depth (Çinar et al 2011, 2012, 2014Çinar & Dagli 2013;Zenetos et al 2017). 2016extended its distribution to the Atlantic coasts of France in infra-littoral muddy to sandy sediments, and occasionally in maerl beds.…”

Section: Taxonomic Accountsmentioning

confidence: 99%

“…Recently, further specimens have also been reported from the Sea of Marmara (eastern Mediterranean Sea), by Çinar et al (2014). Chaetozone corona was originally reported from the Pacific Ocean (Berkeley & Berkeley 1941;Hartman 1961;Blake 1996) and is currently recorded in the eastern Mediterranean, specifically only in the Levantine Sea, the Greek Ionian Sea, the Aegean Sea and the Sea of Marmara (Çinar & Ergen 2007;Simboura et al 2010;Çinar et al 2011, 2012, 2014Çinar & Dagli 2013;Çinar & Bakir 2014). Both the species C. corona and C. carpenteri have been recently redescribed, by Çinar and Ergen (2007) and Chambers et al (2011), respectively; their presence in the Mediterranean Sea has been recognised only in the last decade.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The occurrence of two morphologically similar Chaetozone (Annelida: Polychaeta: Cirratulidae) species from the Italian seas: Chaetozone corona Berkeley & Berkeley, 1941 and C. carpenteri McIntosh, 1911

The European Zoological Journal

Bocchi

Parrella

et al. 2017

Self Cite

The present study reports the spread of the cirratulids Chaetozone corona Berkeley & Berkeley, 1941 and Chaetozone carpenteri McIntosh, 1911 in the Western Central Adriatic Sea, off the coasts of Pescara (Italy). The two species were collected between 2014 and 2016 from soft bottom stations (at depths from 16.5 to 130 m) where the environment was more or less disturbed due to fishing activities. One specimen of C. corona was found also off the coast of Calafuria (Livorno, Italy), representing the first record of this species in the Tyrrhenian Sea. Chaetozone carpenteri could be a native species present in the Mediterranean for a long time but rarely recorded because of taxonomic confusion. Chaetozone corona was already known from the eastern Mediterranean Sea (except from the Adriatic Sea), where it is considered an established alien species. Our results extend the geographic range of these two cirratulid species, providing some information on their ecology and habitat preference. We also suggest a likely vector of spread of C. corona from the easternmost part of the Mediterranean towards the study area. The finding of reproducing specimens of C. corona and C. carpenteri supports the hypothesis that these two species have found a suitable habitat in the Western Central Adriatic Sea, and there will become well established. Although nothing suggests that C. corona would be invasive, it may, however, compete with native species. These findings also seem particularly relevant in order to improve the knowledge of Mediterranean biodiversity.