An Ultrastructure Study of Diet-Related Changes in Epithelial Tissue of Hybrid Striped Bass Larvae

Autor:	Margie Lee Gallagher
Rok vydání:	2012
Předmět:	animal structures food.ingredient biology White bass media_common.quotation_subject fungi Midgut Foregut Anatomy Aquatic Science Hybrid striped bass biology.organism_classification Cell junction Cell biology Bass (fish) food Ultrastructure Metamorphosis media_common
Zdroj:	North American Journal of Aquaculture. 74:489-493
ISSN:	1548-8454 1522-2055
DOI:	10.1080/15222055.2012.676021
Popis:	This study characterized the ultrastructure of normal epidermal and gastrointestinal epithelial cells of larval hybrid striped bass (white bass Morone chrysops × striped bass M. saxatilis) that were fed live prey (brine shrimp Artemia spp. nauplii) or an artificial dry diet. Scanning electron microscopy of larvae that were given live feed revealed normal epidermal cells with microridge structures and proliferation of neuromasts along the lateral line. Cell junctions had double microridge structures. Transmission electron microscopy of the gut showed keratinized epithelial cells with underlying mucous cells in the foregut, while the midgut was characterized by columnar epithelial cells with extensive pinocytotic activity. The hindgut had columnar epithelial cells with centrally located nuclei, regularly spaced microvilli, and numerous tubular mitochondria surrounded by rough endoplasmic reticulum. Larvae that received live feed reached metamorphosis by 27 d posthatch (dph), and clearly identifiabl...
Databáze:	OpenAIRE
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