Ever since its discovery, the double-stranded DNA contained in the mitochondria of
eukaryotes has fascinated researchers because of its bacterial endosymbiotic origin, crucial …

Animal mitochondrial DNA (mtDNA) is commonly described as a small, circular molecule
that is conserved in size, gene content, and organization. Data collected in the last decade …

Hundreds of planarian species exist worldwide, representing a rich phenotypic diversity.
This chapter presents an overview of the morphology and anatomy of various taxonomic …

Notwithstanding the initial claims of general conservation, mitochondrial genomes are a
largely heterogeneous set of organellar chromosomes which displays a bewildering …

Simple Summary Species richness in open water areas is generally lower than in coastal
zones. Fish parasites have been targeted as biological tags potentially magnifying biological …

Specimens of a flat and dark brown land planarian were found in a plant nursery in North
Carolina, USA in 2020. On the basis of examination of photographs of the live specimens …

Polyclad flatworms have a troubled classification history, with two contradicting systems in
use. They both rely on a ventral adhesive structure to define the suborders Acotylea and …

Background Mitochondrial genomes provide useful genetic markers for systematic and
population genetic studies of parasitic helminths. Although many such genome sequences …

Background To date, mitochondrial genomes of more than one hundred flatworms
(Platyhelminthes) have been sequenced. They show a high degree of similarity and a strong …

Using 28S ribosomal DNA sequences, we inferred the internal relationships of the order
Polycladida. We identified morphological characters for clade support when possible …