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Titolo:
Modification of morphology and function of integument mitochondria-rich cells in Tilapia larvae (Oreochromis mossambicus) acclimated to ambient chloride levels
Autore:
Lin, LY; Hwang, PP;
Indirizzi:
Natl Def Med Ctr, Grad Inst Life Sci, Taipei, Taiwan Natl Def Med Ctr Taipei Taiwan Ctr, Grad Inst Life Sci, Taipei, Taiwan Acad Sinica, Inst Zool, Taipei, Taiwan Acad Sinica Taipei TaiwanAcad Sinica, Inst Zool, Taipei, Taiwan
Titolo Testata:
PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
fascicolo: 4, volume: 74, anno: 2001,
pagine: 469 - 476
SICI:
1522-2152(200107/08)74:4<469:MOMAFO>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
YOLK-SAC MEMBRANE; FRESH-WATER; RAINBOW-TROUT; ONCORHYNCHUS-MYKISS; CALCIUM-UPTAKE; TELEOST; EMBRYOS; GILLS; SEAWATER; ADAPTATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Hwang, PP Natl Def Med Ctr, Grad Inst Life Sci, Taipei, Taiwan Natl Def Med Ctr Taipei Taiwan Inst Life Sci, Taipei, Taiwan
Citazione:
L.Y. Lin e P.P. Hwang, "Modification of morphology and function of integument mitochondria-rich cells in Tilapia larvae (Oreochromis mossambicus) acclimated to ambient chloride levels", PHYSIOL B Z, 74(4), 2001, pp. 469-476

Abstract

Similar to those of the gills of adults, three types of mitochondria-rich (MR) cells with different morphologies of apical surfaces (wavy convex, shallow basin, and deep hole) were identified on the integument of freshwater-acclimated tilapia larvae (Oreochromis mossambicus). The object of this study is to test the hypothesis that these subtype cells may represent MR cells equipped with variable efficiencies in Cl- uptake. Larvae acclimated to low-Cl- ([Cl-] = 0.001-0.007 mM) water developed higher densities of MR cells than those acclimated to high-Cl- ([Cl-] = 7.3-7.9 mM) water. The percentage of wavy-convex-type cells in total MR cells was higher in low-Cl--acclimated larvae than in high-Cl--acclimated larvae, which displayed only deep-hole type. In addition, Cl- influx rates of whole larva measured with Cl-36(-) showed a coincident correlation with MR cell densities, that is, low-Cl- larvae displayed higher Cl- influx rates than did high-Cl- larva, suggesting that tilapia larvae develop a higher density of MR cells with larger apical surfaces (wavy-convex type) to boost Cl- uptake in Cl--deficient water. The distinct types of apical surfaces may represent different phases of MR cells that possess different efficiencies of Cl- uptake. Increased apicalmembrane surface areas of MR cells may provide larvae with rapid regulation of Cl- before new MR cells differentiate.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 09:39:18