Sexual attraction and pheromonal dosage response of Nippostrongylus brasiliensis. 1977

L W Bone, and H H Shorey, and L K Gaston

Seven-day-old male and female Nippostrongylus brasiliensis exhibit mutual heterosexual attraction in vitro. A strong dosage-dependency to female pheromone was present in responding male N. brasiliensis. Male helminths were significantly attracted to as few as three female worms. Female helminths were less responsive to male pheromone dosage in vitro. No indication of male homosexual attraction, arrestment, or repulsion was evident. Female homosexual trials suggested that an inhibition of movement occurred in the responding female helminths.

UI MeSH Term Description Entries
D008124 Locomotion Movement or the ability to move from one place or another. It can refer to humans, vertebrate or invertebrate animals, and microorganisms. Locomotor Activity,Activities, Locomotor,Activity, Locomotor,Locomotor Activities
D008297 Male Males
D009559 Nippostrongylus A genus of intestinal nematode parasites belonging to the superfamily HELIGMOSOMATOIDEA, which commonly occurs in rats but has been experimentally transmitted to other rodents and rabbits. Infection is usually through the skin. Rat Nematode,Nematode, Rat,Nematodes, Rat,Rat Nematodes
D010675 Pheromones Chemical substances, excreted by an organism into the environment, that elicit behavioral or physiological responses from other organisms of the same species. Perception of these chemical signals may be olfactory or by contact. Allelochemical,Allelochemicals,Allomone,Allomones,Ectohormones,Kairomone,Kairomones,Pheromone,Semiochemical,Semiochemicals,Synomones
D005260 Female Females
D000723 Ancylostomatoidea A superfamily of nematode parasitic hookworms consisting of four genera: ANCYLOSTOMA; NECATOR; Bunostomum; and Uncinaria. ANCYLOSTOMA and NECATOR occur in humans and other mammals. Bunostomum is common in ruminants and Uncinaria in wolves, foxes, and dogs. Bunostomum,Hookworms,Uncinaria stenocephala,Ancylostomatoideas,Bunostomums,Hookworm,Uncinaria stenocephalas,stenocephalas, Uncinaria
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012737 Sex Factors Maleness or femaleness as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or effect of a circumstance. It is used with human or animal concepts but should be differentiated from SEX CHARACTERISTICS, anatomical or physiological manifestations of sex, and from SEX DISTRIBUTION, the number of males and females in given circumstances. Factor, Sex,Factors, Sex,Sex Factor
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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