e-journal

Microscopic Identification of Novel Cell Types in the Integument of Larval Lake Sturgeon, Acipenser fulvescens

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Osmoregulation, respiration, nutrient/mineral transport, and defense mechanisms are all evident in the integument of fish. The role of the integument in these physiological processes is particularly important during early life history in larval fishes, as functional systems such as the gills and gastrointestinal tract are not fully developed. Using a variety of microscopy techniques, we describe the morphology of keratinocytes, mitochondria rich cells, ciliated cells and mucous cells of the skin, yolk sac, and gills. The cytology we observed was similar to previous studies describing the integument of larval fish, however, we have also identified two novel cell types on the integument of larval Lake Sturgeon, Acipenser fulvescens,between 9 and 34 days post fertilization. Our detailed analysis included a multifaceted microscopy approach using scanning electron, transmission electron, and light microscopy to elucidate the histology of the tissue and cellular morphology in addition to quantification and distribution of these novel cell types. The first cell type had a characteristic ampullary shape with a central cavity and a pore opening at the surface. The second,
located on the free surface of the epidermis, had an uneven plasma membrane surface. Based on the
abundance of secretory vesicles, organelles necessary for protein synthesis, and the lack of neural connection
in both cell types, we propose these cells to be involved in the release of semiochemicals that may act as a
pheromone, alarm substance, or chemical defense mechanism.

KEY WORDS: Acipenseriformes; Acipenser; integument;cell; morphology; microscopy

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Ketersediaan

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Informasi Detail

Judul Seri

Journal Of Morphology

No. Panggil

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Penerbit

: Wiley Periodicals., 2016

Deskripsi Fisik

Journal Of Morphology 277:86–95 (2016)

Bahasa

English

ISBN/ISSN

DOI 10.1002/jmor.204

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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