Table of Contents
Are annelids ectoparasites?
Introduction to Annelida and the Class Polychaeta They comprise the dominant invertebrates of the deep sea. Some annelid groups, however, prey on other invertebrates, like the leeches, or are ectoparasitic or commensals, like the branchiobdellids and acanthobdellids. The latter are fish parasites.
What differentiates polychaetes from other annelids?
Polychaetes differ from other annelids in having a well differentiated head with specialized sense organs and no clitellum. They have many setae, usually arranged in bundles on the parapodia. The head bears eyes, antennae, and sensory palps.
Do all annelids have setae?
All annelids except leeches also have chitonous hair-like structures, called setae, projecting from their cuticle. Sometimes the setae are located on paddle-like appendages called parapodia. The internal organs of annelids are well developed. They include a closed, segmentally-arranged circulatory system.
Which annelid is Ectoparasite?
Subclass Copepoda. Copepods are one of the most represented groups in the aquatic environment, almost comparable to insects in the terrestrial environment, they live in marine and freshwater environments, in the water column or in sediments and in some cases they are parasites.
Do polychaetes have setae?
Polychaetes, which include rag worms, lugworms, bloodworms, sea mice, and others, are marine worms notable for well-defined segmentation of the body. Unique among annelids, most polychaete body segments bear a pair of parapodia (flat, lobelike outgrowths) with setae, or tiny bristles.
Do oligochaeta have setae?
With around 10,000 known species, the Oligochaeta make up about half of the phylum Annelida. These worms usually have few setae (chaetae) or “bristles” on their outer body surfaces, and lack parapodia, unlike polychaeta.
What kingdom do worms belong to?
Both worms and insects are classified under the Kingdom Animalia. The animal kingdom is split into two groups: vertebrate, animals with a backbone, and invertebrate, animals without a backbone. Both worms and insects are invertebrates.
Where do ectoparasites get their sustenance from?
Ectoparasites are organisms that live on the skin of a host, from which they derive their sustenance. The phylum Arthropoda includes the two-winged, or dipterous, flies. The larvae or maggots of these flies may invade living or necrotic tissue of animals and humans, producing myiasis.
What kind of ectoparasites live in human hair?
The mites of Demodex genus are small ectoparasites that live in the hair follicles of mammals and other nearby areas. They are very small and there are two species that affect humans: Demodex folliculorum Y Demodex brevis .
What are the symptoms of contact with a ectoparasite?
Its distribution is worldwide and its transmission is by contact. When this louse is fed it causes certain symptoms in the host. The most common symptom is itching, caused by hypersensitivity to saliva from the louse at the feeding site of the parasite (pubis). Other symptoms are redness and swelling.
Are there any ticks that are ectoparasites to rabbits?
Ectoparasites include biting lice (but not sucking lice), ear mites, and multiple tick species, one of which, Amblyoma tholloni, is a vector for Ehrlichia ruminatum (heartwater disease). Major ectoparasites of rabbit include Cheyletiella parasitovorax, fleas, Notoedres cati, Psoroptes cuniculi, and Sarcoptes scabei.