Polyclads of the Tuscan Coasts. II.<i>Stylochus Alexandrinus</i>Steinböck and<i>Stylochus Mediterraneus</i>n. sp. from the Rocky Shores near Pisa and Livorno

Galleni, Lodovico

doi:10.1080/11250007609434882

Cited by 11 publications

(11 citation statements)

References 5 publications

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“…The specimen shows very few frontal eyes. The marginal eyes are present only in the anterior half of the body and not in the whole body margin as originally described for Imogine mediterranea (Galleni, 1976). However, the internal anatomy of the reproductive organs of I. mediterranea coincides with the original description and figure of Galleni (1976).…”

Section: Family Leptoplanidae Stimpson 1857supporting

confidence: 65%

“…The marginal eyes are present only in the anterior half of the body and not in the whole body margin as originally described for Imogine mediterranea (Galleni, 1976). However, the internal anatomy of the reproductive organs of I. mediterranea coincides with the original description and figure of Galleni (1976). This difference in the distribution of marginal eyes may be related to the size of the specimen: mature worms are approximately 3 cm long, and this specimen, though mature, is only 12 mm long.…”

Section: Family Leptoplanidae Stimpson 1857mentioning

confidence: 90%

“…Scale bars: A, B, C, D 7mm, E 500µm, F 500µm. Imogine mediterranea Galleni, 1976 Synonymous: Stylochus mediterraneus Galleni, 1976. Material examined. One mature specimen, collected in Los Urrutias (Mar Menor, Murcia).…”

Section: Family Leptoplanidae Stimpson 1857mentioning

confidence: 99%

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State of knowledge of the Acotylea (Polycladida, Platyhelminthes) from the Mediterranean coasts of Spain: new records and new species

Marquina

Osca

Rodríguez

et al. 2014

Zootaxa

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Along the Mediterranean coast of the Iberian Peninsula, great species diversity is thought to exist, but our knowledge of Iberian polyclads is, in fact, very limited. This study contributes to the Polycladida (Platyhelminthes) of the Iberian Peninsula, in particular those of the Mediterranean coast. Nine species, mainly new species or new records, are described. Imogine stellae sp. nov. from Mar Menor (Murcia, Spain) is described, while I. mediterranea Galleni, 1976 is recorded for the first time in Spain. The genus Planocera Blainville, 1828 within the Mediterranean basin is reviewed: Planocera graffi Lang, 1879 is redescribed, and its synonymisation with Planocera pellucida (Mertens, 1833) considered. Also, the genus Notoplanella Bock, 1931 is represented by two species in Spain, N. inarmata Bock, 1931 type species, from Formentera Island and N. estelae sp. nov., from Mar Menor. Trigonoporus cephalophtalmus Lang, 1884 is rediscovered after the description of Lang (1884). Stylochus neapolitanus (Delle Chiaje, 1841-1844) Lang, 1884 is recorded and S. pilidium (Goette, 1881) is also redescribed, and Leptoplana mediterranea (Bock, 1913) is newly recorded for the Iberian Peninsula.

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Section: Family Leptoplanidae Stimpson 1857supporting

confidence: 65%

Section: Family Leptoplanidae Stimpson 1857mentioning

confidence: 90%

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State of knowledge of the Acotylea (Polycladida, Platyhelminthes) from the Mediterranean coasts of Spain: new records and new species

Marquina

Osca

Rodríguez

et al. 2014

Zootaxa

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“…[11]. Marine polyclad flatworms are common in coastal and rocky reefs worldwide [30], and they play influential roles in marine ecosystems [31,32,33,34]. The flatworm Planocera multitentaculata , which is a potential prey species of pufferfish around the Japanese coastal area [16,35], has been reported to accumulate relatively high levels of TTX.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Changes in the Tetrodotoxin Content of the Flatworm Planocera multitentaculata

et al. 2017

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Tetrodotoxin (TTX) is a potent neurotoxin that acts specifically on voltage-gated sodium channels on excitable membranes of muscle and nerve tissues. The biosynthetic process for TTX is unclear, although marine bacteria are generally thought to be the primary producers. The marine flatworm Planocera multitentaculata is a known TTX-bearing organism, and is suspected to be a TTX supplier to pufferfish. In this study, flatworm specimens were collected from an intertidal zone in Hayama, Kanagawa, Japan, the TTX content of the flatworm was measured using liquid chromatography with tandem mass spectrometry (LC-MS/MS), and seasonal changes in TTX content were investigated. No significant difference in TTX concentration of the flatworm body was found between the spawning period and other periods. However, the TTX content in individual flatworms was significantly higher in the spawning period than at other times. The TTX content rose in association with an increase in the body weight of the flatworm.

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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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Polyclads of the Tuscan Coasts. II.Stylochus AlexandrinusSteinböck andStylochus Mediterraneusn. sp. from the Rocky Shores near Pisa and Livorno

Cited by 11 publications

References 5 publications

State of knowledge of the Acotylea (Polycladida, Platyhelminthes) from the Mediterranean coasts of Spain: new records and new species

State of knowledge of the Acotylea (Polycladida, Platyhelminthes) from the Mediterranean coasts of Spain: new records and new species

Seasonal Changes in the Tetrodotoxin Content of the Flatworm Planocera multitentaculata

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

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