Search results
Results from the WOW.Com Content Network
Planarians are bilaterian flatworms that lack a fluid-filled body cavity, and the space between their organ systems is filled with parenchyma. [5] [13] Planarians lack a circulatory system, and absorb oxygen through their body wall. They uptake food to their gut using a muscular pharynx, and nutrients diffuse to internal tissues.
Land planarians are carnivorous and most species are active predators, but some are mainly scavengers. [22] All planarians feed through a muscular and eversible pharynx located slightly posteriorly to the middle of the body length and opening through a ventral mouth. The pharynx is an extensible tube-like organ bearing a complex muscular coat.
Planaria is a genus of planarians in the family Planariidae. Due to its excellent ability to regenerate, species of Planaria has also been used as model organisms in regeneration studies. [ 1 ] When an individual is cut into pieces, each piece has the ability to regenerate into a fully formed individual. [ 2 ]
This page was last edited on 14 October 2023, at 00:09 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The subfamily Geoplaninae was initially defined by Ogren and Kawakatsu (1990) [4] for land planarians which have a broad creeping sole, mouth in the second half of the body, dorsal testes, subepithelial longitudinal musculature well developed and parenchymal longitudinal musculature absent or not well developed. The eyes contour the anterior ...
Bipalium pennsylvanicum, the three-lined land planarian, is a species of land planarian in the subfamily Bipaliinae. [1] [2] They are native to Asia, but found mostly in Pennsylvania and the surrounding areas. [3] [2] They can reach a length of 5.1 inches (130 mm) or more, with a diet consisting mostly of earthworms. They reproduce sexually by ...
The tribe Sarcoplanini includes genera of Geoplaninae that occur west of the Andes. They are characterized by the lack of the typical sensory pits that most land planarians have at the border of the anterior region. Instead of this, they have a series of sensory depressions, which are narrower but wider than sensory pits.
Eudoxiatopoplana is a genus of land planarians from New Zealand, currently comprising a single species, Eudoxiatopoplana bilaticlavia, that occurs in Stewart Island. It is the sole genus of the tribe Eudoxiaotopoplanini .