Ultrastructure of the adenohypophysis in the teleost Poecilia latipinna

Research output: Contribution to journalArticlepeer-review

Original languageEnglish
Pages (from-to)239-61
Number of pages23
JournalCell and Tissue Research
Issue number2
Publication statusPublished - 18 Aug 1975

In the sailfin molly, Poecilia latipinna, seven morphological endocrine cell-types could be distinguished with the electron microscope. Each of these was identified with one of the seven cell-types distinguished with the light microscope, to most of which endocrine functions have previously been allocated. Corticotrophs and prolactin cells form the rostral pars distalis, and the proximal pars distalis consists of an outer layer of gonadotrophs and an inner zone containing growth hormone cells and thyrotrophs. The pars intermedia contains two cell-types, of uncertain function. Stellate cells (interstitial cells) occur throughout the adenohypophysis, but are most numerous and prominent in the rostral pars distalis. The inner proximal pars distalis contains a cell-type not previously distinguished in this species with the light microscope, the Z-cell, which could be aminergic. The ultrastructural features of each cell-type are described in detail, and discussed in comparisons with the homologous cells described in other teleosts. There is good agreement for different teleosts in the ultrastructural details of each cell type.

    Research areas

  • Adrenocorticotropic Hormone, Animals, Axons, Biometry, Cyprinidae, Cytoplasmic Granules, Endoplasmic Reticulum, Female, Golgi Apparatus, Gonadotropins, Pituitary, Growth Hormone, Male, Mitochondria, Pituitary Gland, Pituitary Gland, Anterior, Prolactin, Thyrotropin

Related faculties, schools or groups

External organisations

  • University of Sheffield
  • Imperial College London

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