Читать книгу Clinical Guide to Fish Medicine - Группа авторов - Страница 43

Olfactory bulbs are located within the rostrum and are a part of the forebrain (telencephalon); they are well‐developed in elasmobranchs. The bulbs detect amino acids, bile salts, and pheromones (Evans et al. 2004). Meningitis occurs in elasmobranchs and a possible entry route is via the nares or the endolymphatic pores. Taste buds occur in the oropharyngeal cavity as with other vertebrates (Hueter et al. 2004).

Olfaction is used for feeding, particularly within 3–15 m of a prey item, while vision becomes more important at closer range (<3 m) (Hart and Collin 2015). One study showed that sharks become conditioned to the odors from normal, healthy fish within the same system. Fish can produce different odors when frightened, stressed, or excited that can stimulate predation (Tester 1963).