Method for discriminating male and female sepiella maindroni

A technology of male and female squid mansoni, which is applied in the field of sex identification of marine organisms, can solve problems that restrict the development of artificial large-scale breeding of squid mansoni, and achieve intuitive discrimination, easy operation, and no harm to organisms Effect

Active Publication Date: 2016-08-03
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Abstract
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Problems solved by technology

Therefore restricting the development of art

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  • Method for discriminating male and female sepiella maindroni
  • Method for discriminating male and female sepiella maindroni
  • Method for discriminating male and female sepiella maindroni

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Embodiment

[0015] Example: refer to Figure 1 to Figure 3 , the method for discriminating the male and female of the squid mansoni, including measuring the length of the left 3 wrists, the length of the left 4 wrists, the length of the left tentacles, and the length of the carcass of the squid to be identified, which is calculated by the following expression: male : F1=223.42 X 3 +165.85 X 4 +7.951 X 5 -108.06;

[0016] Female: F2=151.48 X 3 +92.71 X 4 +19.19 X 5 -60.38;

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Abstract

The invention discloses a method for discriminating male and female sepiella maindroni. The method comprises the following steps of measuring lengths of left peduncle 3, left peduncle 4, left tentacula and mantle of the sepiella maindroni requiring gender discriminating; calculating by the following discriminants, wherein for male, F1=223.42X3+165.85X4+7.951X5-108.06; for female, F2=151.48X3+92.71X4+19.19X5-60.03; in the discriminants, replacing X3 with the length of left peduncle 3/mantle, replacing X4 with the length of left peduncle 4/mantle, and replacing X5 with the length of left tentacula/mantle. The method has the advantages that by utilizing the discriminants, the discriminating accuracy is high, the discriminating is visual and accurate, the operation is easy and simple, and the injury to to-be-distinguished organisms is avoided; the result is accurate, the operation is simple, and the injury to organisms is avoided.

Description

technical field [0001] The invention relates to a method for identifying the sex of marine organisms, in particular to a method for distinguishing male and female squid. Background technique [0002] Man's Needleless Squid ( Sepiella japonica ) belongs to the phylum Mollusca, Cephalopoda, Sepiaceae, and Sepia genus. It is one of the important economic species of marine fishery in my country. It was once one of the "four seafoods" in the East my country Sea. The highest annual output in history is only in Zhejiang. More than 60,000 tons (Dong Zhengzhi, 1988). However, since the end of the 1970s, due to overfishing and the destruction of water conditions, its resources have declined seriously; in the mid-to-late 1980s, the squid in the coastal fishing grounds of Zhejiang could not form a fishing season (Wu Changwen et al., 2010). Scholars at home and abroad mainly focus on resource status (Tang Yimin et al., 1986), biology (Jiang Xiamin et al., 2007; Chang Kangmei et al., 200...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 平洪领史会来张涛余方平孟浩
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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