Abstract. The aim of this paper is to describe morphological characteristics of fresh- water triclads in Herzegovina and to provide a key for their. 1 Introduction. The polyclads are the most primitive free living flatworms of the phylum Platyhelminthes. These worms are dorso-ventrally. -Eight new species belonging to the genus Cycloporus (Platyhelminthes. Polycladida,. Euryleptidae) are described from Australasian waters including eastern.

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Therefore, we assumed that errors in the PCR process followed a Poisson distribution, and the expected mean was computed using the polymerase error rate 6. The yellow and orange colours represent the tissues bearing the new mutations.

The individuals from s55 possessed a copulatory apparatus. Supplementary Material Additional file 1: The absence or low frequency of heteroplasmic specimens in a specific locality of fissiparous reproducing individuals could be interpreted as a consequence of a recent bottleneck, potentially because of recent colonisation by a few individuals or recovery from a recent population-wide decrease.

Int J Dev Biol. Effect of prolonged vegetative reproduction of olive tree cultivars Olea europaea L.

Species distribution and future expansion Under the hypothesis that D. Animal Evolution Author s: The Rhabditophora includes the Macrostomorpha and Trepaxonemata. However, the question as to how this species attained such a wide distribution with such a low dispersal capability [ 1617 ] remains. Continuing dispersal of platyhelminths triclads Platyhelminthes; Turbellaria in Britain with particular reference to lakes.

Phylum Platyhelminthes

Figure S1the origin of heteroplasmic individuals that simultaneously present haplotypes A, B and C is difficult to envision. Problemi di zoogeografia ;latyhelminthes studiati nelle Planarie.


Platyhelmintes, Barcelona, Spain M. Leria personal communication and one of the authors, MRallows us to confidently state that Platyhemlinthes. Haplotype network and distribution in the studied populations. Molecular barcoding and phylogeography of sexual and asexual freshwater planarians of the genus Dugesia in the Western Mediterranean Platyhelminthes, Tricladida, Dugesiidae Mol Phylogenet Evol.

Localities surrounded by purple circle were found outside of the predicted area. This result suggests that, in these individuals, despite that some point mutations could be caused by polymerase error, there are most likely low-frequency haplotypes that we cannot detect in the direct sequences using PCR. We tested the distribution of changes in the cloned sequences of both those individuals in which the previous test could not reject that the substitutions seen are due to Taq error non-heteroplasmic and in those where the enzyme cannot explain the number of changes observed heteroplasmic.

Those populations for which only one sequence was available were not included. Dugesia sicula Lepori, is a freshwater planarian phylum Platyhelminthes, order Tricladida, suborder Continenticola typically found in ponds, streams and springs close to the Mediterranean coast. In this area, D. Third, it is necessary to increase the number of research groups on microturbellarians, in order to augment the studies on their morphology, systematics, and ecology.

Phylum Platyhelminthes – Oxford Scholarship

Locations with polymorphic individuals. Heteroplasmy has been detected in many species [ 23 ], and some studies in humans have shown platyhelminthe increases with age in somatic cells and is more frequent in certain tissues, such as muscle tissue, most likely because of increases in the number of mutations caused by the presence of oxidative radicals [ 2324 ].


The platyhelminthez charts represent the haplotypes observed in each cloned heteroplasmic individual Additional file 2: Table 2 Primers used for amplification and sequencing. Publications Pages Publications Pages.

Stocchino GA, Manconi R. It has been reported that D. There is still one more thing in our case that provides support for all the copies being functional, in the cloned individuals presenting heteroplasmy, we found copies of at least two or the platyhelkinthes most frequent haplotypes A, B and C that are also found alone in some individuals and in whole populations, and that do not present stop codons, no traces of being non-functional Additional file 2: Rosenbaum G, Lister GS.

Further contribution to the taxonomy and biogeography of the subgenus Dugesia Platyhelminthes: Moreover, a molecular-based study [ 8 ] showed platyhelminhtes most of the numerous fissiparous populations of genus Dugesia present in the western Mediterranean belong to D. Population s01 in the Canary islands is found within Garajonay National Park, in platyhelminthse area of laurel forest, thought to be the remnant of subtropical woods that covered the Mediterranean area during the Tertiary period, which likely provides D.