Secernentea


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Secernentea

[‚se·sər′nen·chə]
(invertebrate zoology)
A class of the phylum Nematoda in which the primary excretory system consists of intracellular tubular canals joined anteriorly and ventrally in an excretory sinus, into which two ventral excretory gland cells may also open.
References in periodicals archive ?
We cleared Nematoda (Secernentea) and Annelida (Oligochaeta) with lactophenol or glycerol and mounted them on temporary slides (Lamothe-Argumedo, 1997; Govedich et al., 2010).
Taxonomicamente se encontraron 29 generos de nematodos pertenecientes a dos clases: Secernentea, ubicados en los ordenes Aphelenchida, Monhysterida, Rhabditida y Tylenchida, y Adenophorea, ubicados en los ordenes Araeolaimida, Dorylaimida y Triplonchida; encontrandose la mayor cantidad de generos, 11 en total, de habito bacteriofago pertenecientes al orden Rhabditida (Tabla 1).
Fueron encontrados 26 generos de nematodos, la mayoria pertenecientes a la clase Secernentea, ubicados en los ordenes Aphelenchida, Rhabditida y Tylenchida, y en menor proporcion en la clase Adenophorea ubicados en los ordenes Chromadorida, Dorylaimida y Triplonchida (Tabla 2).
Class SECERNENTEA Von Linstow, 1905 Order ASCARIDIDA Yamaguti, 1961 Superfamily HETERAKOIDEA Chabaud, 1957 Family ASPIDODERIDAE Skrjabin and Schikhobalova, 1947 Paraspidodera uncinata (Rudolphi, 1819) Travassos, 1914
When choosing the four species, we diversity them in an "unbalanced" way by choosing two species from the same class (i.e., mammals) and the other two species each from totally different classes (i.e., one secernentea and one insect).
Teratocephalus lirellus was included as a representative of the most basal member of the Secernentea. Outgroups were chosen on the basis of the fact that two major clades of rhabditids can be distinguished, Pleiorhabditis and Eurhabditis.
La toxocariasis humana es una zoonosis parasitaria causada principalmente por Toxocara canis, un nematodo que parasita caninos, de la subclase Secernentea, orden Ascaridida y de la familia Ascarididae, que infesta accidentalmente al hombre [7-11].
They are further classified as Secernentea (Phasmidia) or Adenophorea (Aphasmidia).
Reproductive isolation in Rhabditidae (Nematoda: Secernentea); mechanisms that isolate six species of three genera.
Se identificaron huevos de Cestoda, Mathevotaenia Akhumyan, 1946 (Cyclophyllidea: Anoplocephalidae) y Nematoda: Trichuris Roederer, 1761 (Adenophorea: Trichuroidea; Trichuridae); Trichostrongyloidea (Secernentea: Strongylida); Aspidodera Raillet y Henry, 1912 (Ascaridida: Heterakoidea: Aspidoderidae); y Cyclobulura Quentin, 1977 (Ascaridida: Subuluroidea: Subuluridae).
Kingdom: Animalia; Phylum: Nemathelmintes; Class: Secernentea; Order: Strongylida; Suborder: Trichostrongylina; Superfamily: Trichostrongyloidea; Family: Haemonchidae; Subfamily: Haemonchinae; Genus: Haemonchus; Species: H.contortus [32, 47, 60, 123].