卜心宇, 刘必林, 欧利国, 李建华, 方舟, 刘岩. 富山武装乌贼个体发育期角质颚表型变化分析[J]. 南方水产科学, 2022, 18(1): 144-152. DOI: 10.12131/20210135
引用本文: 卜心宇, 刘必林, 欧利国, 李建华, 方舟, 刘岩. 富山武装乌贼个体发育期角质颚表型变化分析[J]. 南方水产科学, 2022, 18(1): 144-152. DOI: 10.12131/20210135
BU Xinyu, LIU Bilin, OU Liguo, LI Jianhua, FANG Zhou, LIU Yan. Analysis of ontogenetic phenotype changes of Enoploteuthis chunii beak[J]. South China Fisheries Science, 2022, 18(1): 144-152. DOI: 10.12131/20210135
Citation: BU Xinyu, LIU Bilin, OU Liguo, LI Jianhua, FANG Zhou, LIU Yan. Analysis of ontogenetic phenotype changes of Enoploteuthis chunii beak[J]. South China Fisheries Science, 2022, 18(1): 144-152. DOI: 10.12131/20210135

富山武装乌贼个体发育期角质颚表型变化分析

Analysis of ontogenetic phenotype changes of Enoploteuthis chunii beak

  • 摘要: 角质颚作为头足类重要的硬组织,记录了其丰富的个体生长信息。在西北太平洋海域,富山武装乌贼 (Enoploteuthis chunii) 是众多海洋哺乳动物和鱼类的食饵,掌握角质颚的生长变化规律不仅有助于了解其个体发育期摄食生态的变化,还有助于进一步研究其在海洋生态系统中的地位和作用。根据2019年3月和9月于西太平洋海域采集的91尾样本,结合胴长数据从角质颚长度及色素沉积分析了富山武装乌贼个体发育期角质颚的表型变化规律。结果表明,随着胴长增加,角质颚各部长度与色素沉积比例均呈正相关,角质颚各部长度在胴长31 和41 mm处跃变,上颚脊突、侧壁及下颚侧壁生长较快;上颚头盖、下颚头盖和下颚侧壁在胴长31 mm处色素沉积发生跃变,上颚侧壁在胴长41 mm处色素沉积跃变明显。ANOVA分析发现,富山武装乌贼在不同个体发育期,角质颚表型变化差异显著 (P<0.05)。研究认为,通过对角质颚生长过程中形态大小、色素沉积等表型变化进行分析,可为富山武装乌贼个体发育期摄食转变的研究提供基础。

     

    Abstract: Cephalopod beak is an important hard tissue that records lots of growth information. In the Northwest Pacific Ocean, Enoploteuthis chunii is the prey of many marine mammals and fishes. Understanding phenotype changes in the growth of beak helps to know E. chunii ontogenetic trophic ecology variation and to investigate its ecological role in the system. In this study, the ontogenetic changes in beak phenotype were investigated by analyzing the variation of beak length and pigmentation of 91 squids, which were collected in the Northwest Pacific Ocean in March and September in 2019. AIC analysis shows that beak length and pigmentation of the squids had positive relationship with increasing mantle length. The beak length saltated in 31 and 41 mm. The upper crest length (UCL), lateral wall length (ULWL) and lower lateral wall length (LLWL) had high linear regression slope, which indicates that they grew faster than other beak parts. The proportion of pigmentation in the upper hood length (UHL), lower hood length (LHL) and LLWL saltated in 31 mm, but that in ULWL saltated in 41 mm. ANOVA analysis shows significant phenotypic changes of E. chunii beak (P<0.05). The study of ontogenetic phenotype changes such as size and pigmentation provides references for research on ontogenetic feeding shift.

     

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