Construction method for sthenoteuthis oualaniensis cutin jaw growth model based on marine environmental factors

A construction method and technology of marine environment, applied in the field of fishery, can solve problems such as affecting the speed of the horny jaw of the kite squid

Active Publication Date: 2021-05-25
SHANGHAI OCEAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004]At present, scholars have studied the influence of marine environment on the individual biology and resource replenishment ...

Method used

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  • Construction method for sthenoteuthis oualaniensis cutin jaw growth model based on marine environmental factors
  • Construction method for sthenoteuthis oualaniensis cutin jaw growth model based on marine environmental factors
  • Construction method for sthenoteuthis oualaniensis cutin jaw growth model based on marine environmental factors

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Embodiment 1

[0049] (1) The surveyed fishing boats are "Qiongsanya 72057" and "Qiongsanya 72068", which belong to Sanya Yufeng Fishery Company in Hainan Province. The power is 237kW, the auxiliary engine power is 163kW, the generator power is 200kW, and the average speed is 9kn. The sampling time was August 2015, 2016, and 2017, and the sea area was 15°50′N~18°00′N, 111°50′E~114°00′E.

[0050](2.1) Measure the mantle length (ML) of the sample, the mantle length is accurate to 1 mm, and identify the sex and maturity stage of the sample, and the maturity stage of the gonad is divided into I-V stages , Stages I and II are sexually immature, and stages III, IV, and V are sexually mature. The relevant data are shown in Table 1.

[0051] Table 1 Sex, gonad maturity, carcass length of kite squid

[0052]

[0053] (2.2) Take out the horny jaw from the head of the kite squid, put it in a 75% alcohol solution and place it in a centrifuge to remove the surface tissue debris, and use a vernier ca...

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Abstract

The invention relates to the field of fishery, and discloses a construction method for a sthenoteuthis oualaniensis cutin jaw growth model based on marine environment factors. The method comprises the following steps of 1) performing principal components to select parameters that can represent the cutin jaw morphology best; 2) calculating the growth rate of the sthenoteuthis oualaniensis during the first sexual maturity, wherein GR = L/d; 3) calculating the operation sea area SST of each month within a certain time span; 4) carrying out canonical correlation analysis on the operation sea area SST of each month, the maximum correlation month of the sthenoteuthis oualaniensis in the corresponding year and the corresponding sea area position; 5) selecting the SST and GR in the month with the maximum correlation to carry out generalized additive model analysis, wherein after log conversion is carried out on the sthenoteuthis oualaniensis cutin jaw growth rate, the sthenoteuthis oualaniensis cutin jaw growth rate accords with normal distribution, and a GAM result is optimized by means of AIC; and 6) obtaining a relational expression between the SST and the GR to establish the model. The model constructed through the method can be used for analyzing and mastering the cutin jaw growth rule of the sthenoteuthis oualaniensis under the influence of different marine environments, and reference is provided for follow-up sustainable development of the sthenoteuthis oualaniensis.

Description

technical field [0001] The invention relates to the field of fishery, in particular to a method for constructing a growth horny jaw model of kite squid based on marine environmental factors. Background technique [0002] The kite squid (Sthenoteuthis oualaniensis) belongs to Cephalopoda, Idiospiida, Ommastrephidae, and Sthenoteuthis. It is mainly distributed in the eastern and central parts of the Pacific Ocean and the northwestern Indian Ocean. Oceanic warm-water cephalopods grow faster than most fish; their lifespan is short, usually one year; they mature quickly and have strong reproductive capacity, and they play an important role in the ecosystem. The kite squid has a large amount of supplementary resources and a good development prospect. In recent years, with the decline of offshore resources, its status has gradually increased in the commercial fishing in the South my country Sea. It has high economic value and great development potential. As the hard tissue in ceph...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 陆化杰宁欣王芮欧玉哲陈静陈新军刘凯陈子越李沁
Owner SHANGHAI OCEAN UNIV
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