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Morphological changes of silver and bighead carp in the Yangtze River over the past 50 years.
Dongwuxue Yanjiu. 2010 Dec; 31(6):651-6.DY

Abstract

Multivariate analysis was adopted to analyze 30 morphometrical characteristics of 121 one-year-old juvenile silver carp (Hypophthalmichthys molitrix) and bighead carp (Aristichthys nobilis) bred during the 1950s ("the former population") and 2008 ("the current population") and collected from the middle reach of the Yangtze River. The average discriminant accuracies of the former and current silver and bighead carp population were 94.2% and 98.0%, respectively. Discriminant analysis also revealed that significant differences in morphology occurred between the former and current populations of both carp in overall characteristics. One-way analysis of variance indicated that between former and current populations, silver carp showed highly significant differences (P<0.01) in twelve of their characteristics and significant differences (P<0.05) in eight of their characteristics, while bighead carp showed highly significant differences (P<0.01) in eight of their characteristics and significant differences (P<0.05) in eight of their characteristics. Six head morphology variables of the current silver and bighead carp were significantly or highly significantly larger than the former populations; fourteen characteristics of silver carp and ten characteristics of bighead carp of the current populations, mainly reflecting truck and tail morphology, were significantly or very significantly smaller than the former populations. Our results indicate that silver and bighead carp have developed a larger head and smaller truck and tail during the last 50 years. Due to such morphological changes, it seems apparent that the heads of these fish species need to be considered in regards to human diets, particularly in relation to economic and nutritious value.

Authors+Show Affiliations

Shanghai Ocean University, Shanghai 200090, China.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21174356

Citation

Yu, Hong-Xia, et al. "Morphological Changes of Silver and Bighead Carp in the Yangtze River Over the Past 50 Years." Dong Wu Xue Yan Jiu = Zoological Research, vol. 31, no. 6, 2010, pp. 651-6.
Yu HX, Tang WQ, Li SF. Morphological changes of silver and bighead carp in the Yangtze River over the past 50 years. Zool Res. 2010;31(6):651-6.
Yu, H. X., Tang, W. Q., & Li, S. F. (2010). Morphological changes of silver and bighead carp in the Yangtze River over the past 50 years. Dong Wu Xue Yan Jiu = Zoological Research, 31(6), 651-6. https://doi.org/10.3724/SP.J.1141.2010. 06651
Yu HX, Tang WQ, Li SF. Morphological Changes of Silver and Bighead Carp in the Yangtze River Over the Past 50 Years. Zool Res. 2010;31(6):651-6. PubMed PMID: 21174356.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Morphological changes of silver and bighead carp in the Yangtze River over the past 50 years. AU - Yu,Hong-Xia, AU - Tang,Wen-Qiao, AU - Li,Si-Fa, PY - 2010/12/22/entrez PY - 2010/12/22/pubmed PY - 2011/5/20/medline SP - 651 EP - 6 JF - Dong wu xue yan jiu = Zoological research JO - Zool. Res. VL - 31 IS - 6 N2 - Multivariate analysis was adopted to analyze 30 morphometrical characteristics of 121 one-year-old juvenile silver carp (Hypophthalmichthys molitrix) and bighead carp (Aristichthys nobilis) bred during the 1950s ("the former population") and 2008 ("the current population") and collected from the middle reach of the Yangtze River. The average discriminant accuracies of the former and current silver and bighead carp population were 94.2% and 98.0%, respectively. Discriminant analysis also revealed that significant differences in morphology occurred between the former and current populations of both carp in overall characteristics. One-way analysis of variance indicated that between former and current populations, silver carp showed highly significant differences (P<0.01) in twelve of their characteristics and significant differences (P<0.05) in eight of their characteristics, while bighead carp showed highly significant differences (P<0.01) in eight of their characteristics and significant differences (P<0.05) in eight of their characteristics. Six head morphology variables of the current silver and bighead carp were significantly or highly significantly larger than the former populations; fourteen characteristics of silver carp and ten characteristics of bighead carp of the current populations, mainly reflecting truck and tail morphology, were significantly or very significantly smaller than the former populations. Our results indicate that silver and bighead carp have developed a larger head and smaller truck and tail during the last 50 years. Due to such morphological changes, it seems apparent that the heads of these fish species need to be considered in regards to human diets, particularly in relation to economic and nutritious value. SN - 0254-5853 UR - https://www.unboundmedicine.com/medline/citation/21174356/Morphological_changes_of_silver_and_bighead_carp_in_the_Yangtze_River_over_the_past_50_years_ L2 - http://www.zoores.ac.cn/EN/abstract/abstract2860.shtml DB - PRIME DP - Unbound Medicine ER -
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