Dugesia benazzii Lepori, 1951, 2018
publication ID |
https://doi.org/ 10.11646/zootaxa.4532.4.5 |
publication LSID |
lsid:zoobank.org:pub:807B317B-D883-439F-97B9-B0C0F09D9666 |
DOI |
https://doi.org/10.5281/zenodo.5988948 |
persistent identifier |
https://treatment.plazi.org/id/C45EE309-B119-FFF4-66FB-FEBC150DFC3E |
treatment provided by |
Plazi |
scientific name |
Dugesia benazzii Lepori, 1951 |
status |
sp. nov. |
Dugesia benazzii Lepori, 1951 View in CoL
The new species D. benazzii was described by Lepori (1951) as a taxon endemic to the two islands Sardinia and Corsica. However, further studies carried out in the Tuscany Archipelago enlarged the geographic range of this species to include also Capraia Island ( Benazzi & Benazzi Lentati, 1976).
Dugesia benazzii View in CoL is represented by sexual and mixed natural populations, the latter characterized by the coexistence of sexual and fissiparous individuals (see Stocchino & Manconi 2013). This species has a haploid chromosome complement of n=8, which is the most common set of chromosomes among Dugesia species, with several biotypes that can be distinguished by the ploidy level and by the type of development (amphimixis or gynogenesis): (1) diploid, amphimictic (2n = 16; n = 8); (2) triploid, amphimictic (3n = 24; n = 8); (3) triploid, gynogenetic synaptic (3n = 24; n = 8); (4) tetraploid, gynogenetic asynaptic (4n = 32; n = 8) ( Lepori, 1948a; Benazzi & Benazzi Lentati, 1976; Vacca et al., 1988, 1993; Pala et al., 1999). Moreover, a tetraploid, gynogenetic synaptic karyoptype (4n = 32; n = 8) and a hexaploid karyotype (6n = 48; n = 8) in a sexual population were also found in Sardinia (M. Pala, pers. comm.); the type of development of this last population is unknown.
Dugesia benazzii View in CoL is widely distributed in Sardinia both in small rivers and in large hydrographic basins ( Lepori, 1951; Benazzi & Deri, 1988; Vacca et al., 1988; 1993; Pala et al., 1999; M. Pala, pers. comm.). A single population has been found also in a spring (Su Cantaru Spring) ( Stocchino et al., 2013c) ( Fig. 1 View FIGURE 1 ).
Until the 1960s D. benazzii View in CoL was considered to be the only species of the genus Dugesia present in Sardinia ( Benazzi, 1969). However, researches carried out by Lepori, Pala and co-workers since the 1970s led to the discovery of four other species, while in-depth investigations on their biology were also performed (see below).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Dugesia benazzii Lepori, 1951
Stocchino, Giacinta Angela 2018 |
Dugesia benazzii
Stocchino 2018 |
Dugesia benazzii
Stocchino 2018 |
D. benazzii
Stocchino 2018 |