Method for estimating growth period of bahaba flavolabiata through daily growth increment in otolith

A technology of yellow lip fish and otoliths, which is applied in the field of fish ecology, can solve the problems of lack, little knowledge of yellow lip fish biology, reproductive biology, spawning period or life history content in spawning season, etc. To achieve the effect of overcoming data loss, high accuracy, and shortening time

Inactive Publication Date: 2018-04-24
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Problems solved by technology

Due to the extreme lack of resources, it is very difficult to carry out relevant investigations and researches. There have been few research reports on the biology of the yellow-lipped fish in my country, and little is known about its reproductive biology, spawning period or season, and life history. many

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  • Method for estimating growth period of bahaba flavolabiata through daily growth increment in otolith

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Embodiment Construction

[0026] The technical solutions of the present invention will be further described in detail below in conjunction with specific examples.

[0027] In this embodiment, the method for estimating the growth period of the yellow-lipped fish through the otolithic sun wheel comprises the following steps:

[0028] S1. The sample fish used are collected in batches in the sea area, with a body length of 16.40-26.30cm, and there is no limit to its specifications; after the sample fish is collected, the body length and weight growth indicators are measured, and the length is accurate to 0.1mm, and the weight is accurate to 0.01 g;

[0029] S2, dissect and take out the otoliths, wash and dry them with absolute alcohol for later use;

[0030] S3. Grind the otoliths with a whetstone first, then use 1500# sandpaper when the otoliths are close to the center, and grind them finely until the center of the otoliths appears to obtain thin slices of otoliths.

[0031] S4. The otolith flakes were ...

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Abstract

The invention discloses a method for estimating growth period of bahaba flavolabiata through a daily growth increment in otolith. The method comprises the following steps that sample fishes are collected, and the growth indexes of body length and weight are measured; the sample fishes are dissected, and the otolith is taken out, cleaned and dried for use; the otolith is ground till the otolith center is shown, and otolith sheets are obtained; the otolith sheets are etched till the daily increment can be clearly distinguished; the etched otolith sheets are cleaned and air-dried; the otolith sheets are observed, and the number of otolith growth turn patterns is measured and recorded; the day-age, incubation period and spawning period are calculated. According to the method, the growth periodof bahaba flavolabiata is estimated through the daily growth increment in the otolith, and the time required by the work which is completed through long-term field investigation in the prior art canbe greatly shortened; the sampling time does not need to be limited in the breeding season of bahaba flavolabiata, and the defect is overcome that field sampling cannot be completed in the breeding season of bahaba flavolabiata so that data loss can be caused; the accuracy of estimating the growth period of bahaba flavolabiata is high.

Description

technical field [0001] The invention belongs to the field of fish ecology, and in particular relates to a method for estimating the growth period of the yellow-lipped fish through the sun wheel of the otolith. Background technique [0002] The research object, Bahaba flavolabiata, belongs to the family Stoabaidae and the genus Flavolabiata. It is commonly known as big gull, white flower, Paikou white flower, and pointed white flower. Rich area. The yellow lip fish is a second-class protected aquatic wild animal in the country. Due to the rapid deterioration of the water environment in sea areas and overfishing, its resources have rapidly decreased and it is on the verge of extinction. Due to the extreme lack of resources, it is very difficult to carry out relevant investigations and researches. There have been few research reports on the biology of the yellow-lipped fish in my country, and little is known about its reproductive biology, spawning period or season, and life h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 区又君李加儿廖锐
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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