Tilapia chromosomal growth hormone gene expression accelerates growth in transgenic zebrafish (Danio rerio)

Estrada, Mario Pablo; Morales, Reynold; Herrera, María Teresa; Arenal, Amílcar; Cruz, Asterio; Hernández, Óscar; Pimentel, Rafael; Guillén, Isabel; Martı́nez, Rebeca

doi:10.2225/vol4-issue2-fulltext-3

Electron. J. Biotechnol.

2001

DOI: 10.2225/vol4-issue2-fulltext-3

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Tilapia chromosomal growth hormone gene expression accelerates growth in transgenic zebrafish (Danio rerio)

Mario Pablo Estrada¹,

Reynold Morales²,

María Teresa Herrera³

et al.

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2006

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Zebrafish and giant danio as models for muscle growth: determinate vs. indeterminate growth as determined by morphometric analysis

Biga

Goetz²

2006

American Journal of Physiology-Regulatory, Integrative and Comp

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The zebrafish has become an important genetic model, but their small size makes them impractical for traditional physiological studies. In contrast, the closely related giant danio is larger and can be utilized for physiological studies that can also make use of the extensive zebrafish genomic resources. In addition, the giant danio and zebrafish appear to exhibit different growth types, indicating the potential for developing a comparative muscle growth model system. Therefore, the present study was conducted to compare and characterize the muscle growth pattern of zebrafish and giant danio. Morphometric analyses demonstrated that giant danio exhibit an increased growth rate compared with zebrafish, starting as early as 2 wk posthatch. Total myotome area, mean fiber area, and total fiber number all exhibited positive correlations with larvae length in giant danio but not in zebrafish. Morphometric analysis of giant danio and zebrafish larvae demonstrated faster, more efficient growth in giant danio larvae. Similar to larger teleosts, adult giant danio exhibited increased growth rates in response to growth hormone, suggesting that giant danio exhibit indeterminate growth. In contrast, adult zebrafish do not exhibit mosaic hyperplasia, nor do they respond to growth hormone, suggesting they exhibit determinate growth like mammals. These results demonstrate that giant danio and zebrafish can be utilized as a direct comparative model system for muscle growth studies, with zebrafish serving as a model organism for determinate growth and giant danio for indeterminate growth.

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Zebrafish and giant danio as models for muscle growth: determinate vs. indeterminate growth as determined by morphometric analysis

Biga

Goetz²

2006

American Journal of Physiology-Regulatory, Integrative and Comp

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show abstract

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Tilapia chromosomal growth hormone gene expression accelerates growth in transgenic zebrafish (Danio rerio)

Cited by 1 publication

References 15 publications

Zebrafish and giant danio as models for muscle growth: determinate vs. indeterminate growth as determined by morphometric analysis

Zebrafish and giant danio as models for muscle growth: determinate vs. indeterminate growth as determined by morphometric analysis

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