Volume 14 Issue 4
Jul.  2018
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FANG Zhou, JIN Yue, HU Feifei, CHEN Xinjun. Beak morphology and growth pattern of Indian squid (Uroteuthis duvaucelii) in northern South China Sea[J]. South China Fisheries Science, 2018, 14(4): 17-26. DOI: 10.3969/j.issn.2095-0780.2018.04.003
Citation: FANG Zhou, JIN Yue, HU Feifei, CHEN Xinjun. Beak morphology and growth pattern of Indian squid (Uroteuthis duvaucelii) in northern South China Sea[J]. South China Fisheries Science, 2018, 14(4): 17-26. DOI: 10.3969/j.issn.2095-0780.2018.04.003
shu

Beak morphology and growth pattern of Indian squid (Uroteuthis duvaucelii) in northern South China Sea

  • 1.

    College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China

  • 2.

    Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education; Shanghai Ocean University, Shanghai 201306, China

  • 3.

    National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University, Shanghai 201306, China

  • 4.

    Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture, Shanghai 201306, China)

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  • Received Date: January 23, 2018
  • Revised Date: March 05, 2018
  • Available Online: December 04, 2018
    Graphical Abstract
    • Abstract
  • In order to investigate the influence of size and maturity on the beak morphology of Indian squid (Uroteuthisduvaucelii), we collected the samples from the northern South China Sea during September to October in 2015, and measured the mantle length (LM), body mass (M), beak morphometircs, and then established their relationship. The beak morphometrics variation among different sizes and maturity stages was evaluated by ANOVA test. The results show that immature individuals had significant difference in LM between sexes, while mature and immature females had significant difference in M. The relationship between LM and M was fitted with power function. The growth indices (b) ranged from 2.22 to 2.25 and to 1.75 for immature and mature individuals, respectively. The beak morphometrics of mature individuals differed with those of immature individuals, and there was no significant difference in beak morphometrics between sexes for immature individuals. The selected six beak morphometrics fitted with LM as linear model. The ANOVA test shows that female beak morphometrics had significant difference among different LM groups (P<0.01). Considering with the maturity stage, these beak morphometrics were also influenced by the interaction between LM groups and maturity stages (P<0.01).
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    • References (33)
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