Stylochus mediterraneus (Turbellaria: Polycladida), predator on the mussel Mytilus galloprovincialis

Galleni, Lodovico; Tongiorgi, Paolo; Ferrero, Enrico; Salghetti, U.

doi:10.1007/bf00393784

Cited by 49 publications

(33 citation statements)

References 21 publications

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“…Graff 1913) or free living (Westblad 1955) in the Adriatic Sea; the relationship between Mytilus gallopl-ovincialis and Stylochus m e d i t e r r a n e u s (Turbellana: Eulecitophora) is better known. This turbellarian, which measures more than 3 cm in length and 15 mm in width, was sampled from mussel beds along the coasts of Leghorn (Livorno, Italy) by Galleni et al (1980) and in the Adriatic Sea by Ceschia et al (1992) and Ceschia & Mion (1995).…”

Section: Resultsmentioning

confidence: 99%

Prevalence of Mytilicola intestinalis (Copepoda:Mytilicolidae) and Urastoma cyprinae (Turbellaria:Hypotrichinidae) in marketable mussels Mytilus galloprovincialis in Italy

Trotti¹,

Baccarani²,

Giannetto³

et al. 1998

Dis. Aquat. Org.

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Marketable mussels Mytilus qalloprovlncla0's traded with commercial certification from production sltes in Italy and abroad (France, Spain) were exarnlned for the presence of A4ytrllcola intestinalls (Copepoda. Mytllicolidae) and Urastoma cyprlnae (Turbellana Hypotrichlnidae) from October 1994 to February 1996. The prevalence of M. intestlnahs was 4 1 % and 4.7% respectively In mussels from Lerici (La S p e z~a ) and S Pietro in Volta (Venice), whereas ~t rose to 57.9% in the samples from Spain. A4. intestinalis was absent In mussels from C h i o g g~a (Venlce). Ganzlrn (Messina), Taranto, Tneste and France. The prevalence of U cyprinae vaned considerably, ranging from 0 . 3 Y in mussels from Trani (Bari) to 33 2 % and 86.3% respectively in those from Chioggia and Tr~este. It was 85 7 "h in samples from France and 63.7 ";P in those from Spain KEY WORDS-Mytilus galloprovinclaljs . Mytlllcola ~ntestinalis . UI-astoma cyprinae . Paras~tology Epidemiology

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Section: Resultsmentioning

confidence: 99%

Prevalence of Mytilicola intestinalis (Copepoda:Mytilicolidae) and Urastoma cyprinae (Turbellaria:Hypotrichinidae) in marketable mussels Mytilus galloprovincialis in Italy

Trotti¹,

Baccarani²,

Giannetto³

et al. 1998

Dis. Aquat. Org.

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“…Stylochidae and Livorno: the species is, in fact, predator on mussels (see Galleni et al 1980). The haploid number n = 10 was obtained in the germinal lines both from spermatocytes I and freshly laid unfertilized oocytes I (Plate I, Figs.…”

Section: Resultsmentioning

confidence: 99%

Karyological observations on Polyclads

Galleni

Puccinelli

1981

Hydrobiologia

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A karyological analysis of eight species of Polyclads has been carried out. A chromosome number of n = 10 for Stylochus alexandrinus and for Stylochus mediterraneus was ascertained on germinal lines.A chromosome number of 2n = 20 was ascertained from metaphasic plates from regenerative blastemas of Notoplana alcinoi and Leptoplana tremellaris. A karyometric analysis of this last species permitted the reconstruction of an idiogram.An idiogram was also prepared from metaphasic plates of Stylostomum ellipse obtained from early embryonic mitoses. The chromosome number of this species also was 2n = 20.Chromosome numbers of n = 8 and 2n = 16 were ascertained on germinal lines and metaphasic plates of blastemas in Echinoplana celerrima and on germinal lines and early embryonic mitoses of Stylochoplana maculata.Finally the diploid number 2n = 18 was ascertained on metaphasic plates from regenerative blastema of Yungia aurantiaca.

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“…For example, Stylochus spp. are known predators of commercially important oysters (Arakawa 1970, Galleni 1976, Newman et al 1993) and the mussel Mytilus galloprovincialis (Galleni et al 1980). In addition, several planocerid species accumulate high concentrations of tetrodotoxin in their eggs -as a possible defense against predators -and in the pharynx, where it has been shown to aid in capturing mobile prey (Miyazawa et al 1986, 1987, Tanu et al 2004, Ritson-Williams et al 2006, Yamada et al 2017).…”

Section: Introductionmentioning

confidence: 99%

A molecular framework for the taxonomy and systematics of Japanese marine turbellarian flatworms (Platyhelminthes, Polycladida)

Tsunashima¹,

Morio²,

Yamada³

et al. 2017

Aquat. Biol.

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The order Polycladida comprises a highly diverse and cosmopolitan group of marine turbellarian flatworms. Owing to the great morphological diversity and the absence of a molecular phylogeny, the classification of this group has always been controversial. Here we seek to add resolution by reporting the results of molecular phylogenetic analysis based on sequences of the 28S ribosomal RNA gene, thus providing a framework for understanding relationships and the evolution of characters within the group. The phylogeny provides strong support for 10 and 7 distinct families within the suborders Acotylea and Cotylea, respectively. In addition, an analysis based on the mitochondrial gene sequences (cytochrome c-oxidase subunit I) reveals further details of the relationships within Acotylea, which were classified by morphological analysis, but not by 28S rRNA sequence-based analyses. These analyses also showed that several species corresponded to previously described genera based on morphological features and character combinations. We conclude that a classification of genera in Acotylea and Cotylea based on molecular phylogeny reflects the morphological diversity of these polyclad flatworms.

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Stylochus mediterraneus (Turbellaria: Polycladida), predator on the mussel Mytilus galloprovincialis

Cited by 49 publications

References 21 publications

Prevalence of Mytilicola intestinalis (Copepoda:Mytilicolidae) and Urastoma cyprinae (Turbellaria:Hypotrichinidae) in marketable mussels Mytilus galloprovincialis in Italy

Prevalence of Mytilicola intestinalis (Copepoda:Mytilicolidae) and Urastoma cyprinae (Turbellaria:Hypotrichinidae) in marketable mussels Mytilus galloprovincialis in Italy

Karyological observations on Polyclads

A molecular framework for the taxonomy and systematics of Japanese marine turbellarian flatworms (Platyhelminthes, Polycladida)

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