Acta Ichthyologica et Piscatoria 43(1): 75-77, doi: 10.3750/AIP2013.43.1.11
Differences in body proportions between hatchery-reared- and wild Pacific herring, Clupea pallasii (Actinopterygii: Clupeiformes: Clupeidae)
M. Nakaya, K. Fukunaga, S. SuzukiCorresponding author: M. Nakaya © M. Nakaya, K. Fukunaga, S. Suzuki. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Citation:
Nakaya M, Fukunaga K, Suzuki S (2013) Differences in body proportions between hatchery-reared- and wild Pacific herring, Clupea pallasii (Actinopterygii: Clupeiformes: Clupeidae). Acta Ichthyologica et Piscatoria 43(1): 75-77. https://doi.org/10.3750/AIP2013.43.1.11 |  |
Abstract
The body proportions of 0-group Pacific herring, Clupea pallasii, were compared between hatchery-reared- and wild fish and significant differences were observed. There were fewer vertebrae (Mean ± SD) in hatchery-reared- (52.5 ± 2.15) than in wild fish (53.7 ± 0.92). For both the hatchery-reared- and the wild individuals, the correlations between number of vertebrae and vertebral column length (VCL) per standard length (SL) were positive. Head length (HL) was approximated as SL minus VCL. Therefore, the proportion of HL in relation to SL became lower with the higher number of vertebrae. Their vertebral number may relate to the difference of body proportions between hatchery-reared- and wild fish.
Keywords
body proportions, hatchery-reared, Pacific herring, number of vertebrae