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Rhodine
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodine Antarctica
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodine Attenuata
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodine Bitorquata
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodine Gracilior
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodine Intermedia
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodine Loveni
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodine Sima
''Rhodine'' is a genus of capitellid segmented worms in the family Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae .... Morphology ''Rhodine'' worms have a head with a transverse ridge on the posterior part of their peristomium; their neurochaetae begin on the fifth chaetiger (i.e. any segment with chaetae); they present double rows of uncini in median and posterior chaetigers; they have an indeterminate number of chaetigers; and their posterior segments have posteriorly directed collars. References External links {{Annelid-stub Annelid genera Polychaete genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maldanidae
Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae, and together form the clade Maldanomorpha. Morphology Maldanid worms have a long and cylindrical body that usually bends at one or both ends. It can be divided into four parts: 1) a head, formed by a Dorsal (anatomy), dorsally positioned prostomium that is fused to the peristomium, sometimes with a flattened cephalic plate; 2) a thorax, formed by the first four wikt:chaetigers, chaetigers (i.e. Chaeta, chaetae-bearing metamery, segments), usually with strong spines; 3) an abdomen, with several longer chaetigers that are often followed by a number of achaetous (i.e. without Chaeta, chaetae) segments; 4) a posterior end, with a pygidium that contains the anus. The maldanid pygidium takes a wide variety of forms such as conical, plate-shaped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capitellida
Capitellida is an order of annelids belonging to the class Polychaeta. Families: * Arenicolidae Johnston, 1835 * Capitellidae Grube, 1862 * Maldanidae Maldanidae is a family of more than 200 species of Marine life, marine polychaetes commonly known as bamboo worms or maldanid worms. They belong to the order Capitellida, in the phylum Annelida. They are most closely related to family Arenicolidae ... Malmgren, 1867 References Annelids {{Annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Segmented Worm
The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecologies – some in marine environments as distinct as tidal zones and hydrothermal vents, others in fresh water, and yet others in moist terrestrial environments. The Annelids are bilaterally symmetrical, triploblastic, coelomate, invertebrate organisms. They also have parapodia for locomotion. Most textbooks still use the traditional division into polychaetes (almost all marine), oligochaetes (which include earthworms) and leech-like species. Cladistic research since 1997 has radically changed this scheme, viewing leeches as a sub-group of oligochaetes and oligochaetes as a sub-group of polychaetes. In addition, the Pogonophora, Echiura and Sipuncula, previously regarded as separate phyla, are now regarded as sub-groups of polycha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peristomium
The peristomium is the first true body segment in an annelid worm's body in the anterior end. It is directly behind the prostomium and contains the mouth, tentacular cirri, and sometimes feeding palps, which may instead occur on the prostomium. If an eversible pharynx is present, it is contained in this segment as well, and can fill up to 20 segments when inverted, depending on the species. The prostomium and peristomium can be variously fused, either completely distinct, or comprising a joint structure of a peristomial ring and a tentacular crown. See also *Prostomium *Pygidium The pygidium (plural pygidia) is the posterior body part or shield of crustaceans and some other arthropods, such as insects and the extinct trilobites. In groups other than insects, it contains the anus and, in females, the ovipositor. It is compo ... References {{Reflist Annelid anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neurochaetae
A chaeta or cheta (from Greek χαίτη “crest, mane, flowing hair"; plural: chaetae) is a chitinous bristle or seta found in annelid worms, (although the term is also frequently used to describe similar structures in other invertebrates such as arthropods). Polychaete annelids, ('polychaeta' literally meaning "many bristles") are named for their chaetae. In Polychaeta, chaetae are found as bundles on the parapodia, paired appendages on the side of the body. The chaetae are epidermal extracellular structures, and clearly visible in most polychaetes. They are probably the best studied structures in these animals. Use in taxonomy and identification The ultrastructure of chaetae is fundamentally similar for all taxa but there is vast diversity in chaetal morphology. Moreover, chaetae bear precise characters for determination of species and taxonomic assessment. The shape, absolute and relative size, number, position, ornamentation and type are important taxonomic characters a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
