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An earthworm is a soil-dwelling terrestrial invertebrate that belongs to the phylum Annelida. The term is the common name for the largest members of the class (or subclass , depending on the author) Oligochaeta .
Gippsland earthworm colonies are small and isolated, [9] and the species' low reproductive rates and slow maturation make those small populations vulnerable. [9] Their natural habitats are grasslands, and while they can survive beneath pastures, [9] cultivation, heavy cattle grazing and effluent run-off are adversarial to the species. [9]
The giant Palouse earthworm or Washington giant earthworm (Driloleirus americanus, meaning lily-like worm [2]) is a species of earthworm belonging to the genus Driloleirus inhabiting the Palouse region of Eastern Washington and North Idaho, in the United States. The worm was discovered in 1897 by Frank Smith near Pullman, Washington. It can ...
The Oregon giant earthworm was first described by Frank Smith in 1937 from a specimen found near Salem, Oregon in 1903. The species was named in honor of its collector, F. M. McElfresh. [ 2 ] Like its cousin, the giant Palouse earthworm ( Driloleirus americanus ) of Washington, this species can grow to lengths in excess of 3 feet (0.91 m) and ...
Prior to dissection for educational purposes, chloroform was administered to this common sand frog to induce anesthesia and death. The extent to which animal testing causes pain and suffering, and the capacity of animals to experience and comprehend them, is the subject of much debate. [166] [167]
A key principle in the dissection of human cadavers (sometimes called androtomy) is the prevention of human disease to the dissector.Prevention of transmission includes the wearing of protective gear, ensuring the environment is clean, dissection technique [2] and pre-dissection tests to specimens for the presence of HIV and hepatitis viruses. [3]
An autopsy (also referred to as post-mortem examination, obduction, necropsy, [Note 1] or autopsia cadaverum) is a surgical procedure that consists of a thorough examination of a corpse by dissection to determine the cause, mode, and manner of death; or the exam may be performed to evaluate any disease or injury that may be present for research or educational purposes.
Lake Pedder earthworm Holotype specimen collected in February 1971, the only known specimen of this species in existence. Photographed at Museum of Tasmania Collections and Research Facility Conservation status Extinct (1972) (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Annelida Clade: Pleistoannelida Clade: Sedentaria Class: Clitellata Order: Opisthopora ...