Triciadi dulciacquicoli (Platyhelminthes, Turbellaria) delle isole circum-sarde
نویسندگان
چکیده
منابع مشابه
Morphometry of the eyes in regenerant of genus Dugesia (Platyhelminthes, Turbellaria, Dugesiidae).
The photodocumentation technique was used weekly to observe until the end of the regenerative process of eyes in three species of Dugesia. Morphometric data based on the measurement of 96 samples of the species: Dugesia tigrina, D. schubarti, and D. anderlani were analyzed. A comparative analysis was made through graphic representation of statistical parameters of the following morphometric cha...
متن کاملEvidence that two types of 18S rDNA coexist in the genome of Dugesia (Schmidtea) mediterranea (Platyhelminthes, Turbellaria, Tricladida).
Sequences of 18S ribosomal DNA (rDNA) are increasingly being used to infer phylogenetic relationships among living taxa. Although the 18S rDNA belongs to a multigene family, all its copies are kept homogeneous by concerted evolution (Dover 1982; Hillis and Dixon 1991). To date, there is only one well-characterized exception to this rule, the protozoan Plasmodium (Gunderson et al. 1987; Waters, ...
متن کاملPlatyhelminthes
Platyhelminthes (flatworms) have captivated the imagination of biologists for centuries. Indeed, planarian flatworms were used as experimental models decades before Caenorhabditis elegans became known as 'the worm'. Although planarians experienced a brief fall from grace, with the advent of molecular tools, planarians, such as Schmidtea mediterranea, have emerged in recent years as powerful mod...
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Among the turbellarian flatworms reproduction is typically associated with a sexual process. However, in certain orders such as the Tricladida and Rhabdocoela asexual reproduction is also recognized.8 The purpose of this short paper is to report the discovery of asexual reproduction by what is probably a fission-like process in another order of Turbellaria, the Acoela. Asexual reproduction was ...
متن کاملElenco Delle Citazioni
Structurally fixed modes of systems described by Rosenbrock's polynomial matrices" Int.Controllability of linear single-input positive discrete-time systems", Int.Spectral characterization and pole assignement for positive linear discrete-time systems" INT. 5-M.E. Valcher "Controllability and reachability criteria for discrete time positive systems" INT.Primitivity of positive matrix pairs. Alg...
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ژورنال
عنوان ژورنال: Biogeographia – The Journal of Integrative Biogeography
سال: 1996
ISSN: 1594-7629
DOI: 10.21426/b618110452