JP2015104378A - Breed discrimination device and breed discrimination method - Google Patents

Breed discrimination device and breed discrimination method Download PDF

Info

Publication number
JP2015104378A
JP2015104378A JP2013249697A JP2013249697A JP2015104378A JP 2015104378 A JP2015104378 A JP 2015104378A JP 2013249697 A JP2013249697 A JP 2013249697A JP 2013249697 A JP2013249697 A JP 2013249697A JP 2015104378 A JP2015104378 A JP 2015104378A
Authority
JP
Japan
Prior art keywords
fry
eel
breed
eel fry
discriminating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2013249697A
Other languages
Japanese (ja)
Other versions
JP6334903B2 (en
Inventor
幹二 田代
Kanji Tashiro
幹二 田代
満 鮫島
Mitsuru Samejima
満 鮫島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HIKARI CORP KK
Original Assignee
HIKARI CORP KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HIKARI CORP KK filed Critical HIKARI CORP KK
Priority to JP2013249697A priority Critical patent/JP6334903B2/en
Publication of JP2015104378A publication Critical patent/JP2015104378A/en
Application granted granted Critical
Publication of JP6334903B2 publication Critical patent/JP6334903B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Landscapes

  • Farming Of Fish And Shellfish (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a breed discrimination device and a breed discrimination method capable of discriminating the breed of fry of eel highly accurately in a short time, while maintaining its survival state.SOLUTION: In a breed discrimination device including imaging means 2 for imaging fry A of eel stored in a transparent case 1, and a computer 3 for discriminating the breed of the fry of the eel on the basis of an image imaged by the imaging means 2, the fry A of the eel is put into a state of apparent death by cooling it to an activity suspension temperature, and then imaged by the imaging means 2.

Description

本発明は、ウナギの稚魚を撮像してその品種を判別するための品種判別装置及び品種判別方法に関するものである。   The present invention relates to a breed discriminating apparatus and a breed discriminating method for discriminating the breed of an eel by imaging it.

ウナギの品種は19種程確認されており、その生息分布も熱帯、亜熱帯、温帯などの地域に広がっているが、近年、温暖化やエルニーニョ現象など自然現象の変化により、ニホンウナギと呼ばれる品種のウナギの稚魚(シラスウナギ)について日本沿岸での不漁が続いている。しかるに、マリアナ海溝にて孵化した後、日本沿岸に達する前に捕獲されたウナギの稚魚には、ニホンウナギの他、他の外国種のウナギ(ビカーラパシフィカ種、マルモラータ種及びルゾネンシス種等)の稚魚が混ざっている場合が多々ある。   As many as 19 eel varieties have been confirmed, and their habitat distribution has spread to regions such as the tropics, subtropics, and temperate zones. Recently, due to changes in natural phenomena such as global warming and El Niño, Unfishing of Japanese eel flies (white eel) continues along the coast of Japan. However, larvae of eels that have been captured at the Mariana Trench and before reaching the coast of Japan include Japanese eels and other foreign eels (Bicara Pacifica, Marmorata, Ruzonensis, etc.). There are many cases where fry are mixed.

一方、ウナギを養殖する際、品種により養殖方法が異なるため、ニホンウナギの稚魚に他の外国種のウナギの稚魚が混ざっていると、共食い等の影響が懸念されるとともに、一般的にニホンウナギの方が他の外国種のウナギより高価で取引されることから、品質が安定しないという不具合がある。そこで、捕獲したウナギの稚魚の品種を判別することが必要とされており、従来より、例えば遺伝子に基づく品種の判別や、生息地の水温の差を利用した判別(例えば特許文献1参照)等が行われていた。   On the other hand, when eels are cultivated, the cultivation method differs depending on the breed. This is more expensive than other foreign eels, so the quality is not stable. Therefore, it is necessary to discriminate varieties of captured eel fry, and conventionally, for example, discrimination of varieties based on genes, discrimination using differences in water temperature of habitat (see, for example, Patent Document 1), etc. Was done.

特開2004−135649号公報JP 2004-135649 A

しかしながら、上記従来技術のうち遺伝子に基づく判定技術においては、判別に比較的長い時間及びコストがかかってしまうとともに、生存状態で品種を判別することができず、判別後に養殖することができないという問題があった。また、生息地の水温の差を利用した判別においても、同一の水槽での保管時間が長かったりするとその環境に慣れてしまい判別が十分でなく精度が悪いという問題があった。   However, in the determination technique based on the gene among the above conventional techniques, it takes a relatively long time and cost to determine, and the variety cannot be determined in a living state, and cannot be cultured after the determination. was there. Also, in the discrimination using the difference in water temperature in the habitat, there is a problem that if the storage time in the same aquarium is long, it becomes used to the environment and the discrimination is not sufficient and the accuracy is poor.

本発明は、このような事情に鑑みてなされたもので、ウナギの稚魚の品種を高精度及び短時間で且つ生存状態を維持しつつ判別することができる品種判別装置及び品種判別方法を提供することにある。   The present invention has been made in view of such circumstances, and provides a breed discriminating apparatus and a breed discriminating method which can discriminate varieties of eel fry with high accuracy and in a short time while maintaining a living state. There is.

請求項1記載の発明は、ウナギの稚魚を撮像する撮像手段と、該撮像手段で撮像した画像に基づいてウナギの稚魚の品種を判別する判別手段とを具備した品種判別装置であって、ウナギの稚魚を仮死状態とした後、前記撮像手段で撮像することを特徴とする。   The invention described in claim 1 is a breed discriminating apparatus comprising imaging means for picking up an eel fry and a discriminating means for discriminating a breed of eel based on an image picked up by the image pickup means. It is characterized by picking up an image with the above-mentioned image pickup means after putting the fry of the puppy into a dead state.

請求項2記載の発明は、請求項1記載の品種判別装置において、ウナギの稚魚を所定温度まで冷却することにより仮死状態とすることを特徴とする。   The invention described in claim 2 is characterized in that, in the breed discriminating apparatus described in claim 1, the eel fry is cooled to a predetermined temperature so as to be in a pseudo-dead state.

請求項3記載の発明は、請求項2記載の品種判別装置において、前記所定温度は、1℃〜7℃の活動停止温度に設定されたことを特徴とする。   According to a third aspect of the present invention, in the product type identification device according to the second aspect, the predetermined temperature is set to an activity stop temperature of 1 ° C to 7 ° C.

請求項4記載の発明は、請求項1〜3の何れか1つに記載の品種判別装置において、仮死状態のウナギの稚魚を前記撮像手段の撮像位置まで一匹毎搬送し得る搬送手段を具備したことを特徴とする。   A fourth aspect of the present invention is the breed discrimination device according to any one of the first to third aspects, further comprising a transport unit capable of transporting the eel fry in a dead state to the imaging position of the imaging unit one by one. It is characterized by that.

請求項5記載の発明は、ウナギの稚魚を撮像し、その撮像した画像に基づいてウナギの稚魚の品種を判別する品種判別方法であって、ウナギの稚魚を仮死状態とした後、撮像することを特徴とする。   The invention according to claim 5 is a breed discrimination method for picking up eel fry and discriminating the breed of eel fry based on the picked-up image. It is characterized by.

請求項6記載の発明は、請求項5記載の品種判別方法において、ウナギの稚魚を所定温度まで冷却することにより仮死状態とすることを特徴とする。   The invention described in claim 6 is characterized in that, in the breed discrimination method according to claim 5, the eel fry is cooled to a predetermined temperature so as to be in a pseudo-dead state.

請求項7記載の発明は、請求項6記載の品種判別方法において、前記所定温度は、1℃〜7℃の活動停止温度に設定されたことを特徴とする。   The invention described in claim 7 is the product identification method according to claim 6, wherein the predetermined temperature is set to an activity stop temperature of 1 ° C to 7 ° C.

請求項8記載の発明は、請求項5〜7の何れか1つに記載の品種判別方法において、仮死状態のウナギの稚魚を撮像位置まで一匹毎搬送して撮像することを特徴とする。   The invention described in claim 8 is characterized in that, in the breed discrimination method according to any one of claims 5 to 7, fry of eels that are in a dead state are conveyed to the imaging position one by one and imaged.

請求項1、5の発明によれば、ウナギの稚魚を仮死状態とした後、撮像してその画像に基づいて品種を判別するので、ウナギの稚魚の品種を高精度及び短時間で且つ生存状態を維持しつつ判別することができる。   According to the inventions of claims 1 and 5, since the larvae of the eels are put into a dead state, the varieties are determined based on the imaged images. Can be determined while maintaining

請求項2、6の発明によれば、ウナギの稚魚を所定温度まで冷却することにより仮死状態とするので、確実且つ安価に仮死状態とすることができるとともに、より良好に仮死状態から活動状態に復活させることができる。   According to the second and sixth aspects of the invention, since the eel fry is cooled to a predetermined temperature to be in a pseudo-dead state, it can be reliably and inexpensively put into a pseudo-dead state, and more preferably from the pseudo-dead state to the active state. Can be revived.

請求項3、7の発明によれば、所定温度は、1℃〜7℃の活動停止温度に設定されたので、より確実に仮死状態とすることができる。   According to the third and seventh aspects of the invention, since the predetermined temperature is set to the activity stop temperature of 1 ° C. to 7 ° C., it is possible to make the state of assassination more reliably.

請求項4、8の発明によれば、仮死状態のウナギの稚魚を撮像位置まで一匹毎搬送して撮像するので、撮像及びその画像に基づく判別をより容易且つ精度よく行わせることができる。   According to the fourth and eighth aspects of the present invention, the larvae of the eels in the assassinated state are conveyed and imaged one by one to the imaging position, so that imaging and discrimination based on the images can be performed more easily and accurately.

本発明の実施形態に係る品種判別装置の概略を示す模式図The schematic diagram which shows the outline of the kind identification apparatus which concerns on embodiment of this invention 同品種判別装置で品種が判別されるウナギの稚魚を示す模式図Schematic diagram showing eel fry whose varieties are identified by the same cultivar identification device 本発明の実施形態に係る品種判別方法を示すフローチャートThe flowchart which shows the kind identification method which concerns on embodiment of this invention 本発明の実施形態に係る品種判別装置の概略(搬送手段を含む)を示す模式図The schematic diagram which shows the outline (a conveyance means is included) of the kind identification apparatus which concerns on embodiment of this invention.

以下、本発明の実施形態について図面を参照しながら具体的に説明する。
本実施形態に係る品種判別装置は、ウナギの稚魚(シラスウナギ)の品種を判別し、特にニホンウナギの稚魚を仕分けするためのもので、図1、4に示すように、判別対象としてのウナギの稚魚Aを水と共に収容可能な透明なケース1と、撮像手段2と、判別手段としてのコンピュータ3と、照明手段4と、冷却手段5(図4参照)と、搬送手段αとを具備して構成されている。
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The breed discriminating apparatus according to the present embodiment discriminates varieties of eel fry (white eel), particularly for sorting Japanese eel fry. As shown in FIGS. A transparent case 1 that can accommodate the fry A together with water, an imaging means 2, a computer 3 as a discrimination means, an illumination means 4, a cooling means 5 (see FIG. 4), and a transport means α. It is configured.

冷却手段5は、容器C内に収容された水を冷却するための冷媒器から成るもので、当該容器Cには、例えば漁により捕獲された多数のウナギの稚魚が収容されている。そして、冷却手段5を作動させて、容器C内の水を所定温度まで冷却させることにより、ウナギの稚魚を仮死状態とし得るようになっている。本実施形態に係る仮死状態とするための所定温度は、1℃〜7℃の温度(ウナギの稚魚の活動停止温度)に設定されている。仮死状態とされたウナギの稚魚は、通常、体全体が真直ぐな状態(略直線状)のまま硬直して動かなくなる。   The cooling means 5 is composed of a refrigerant for cooling the water stored in the container C, and the container C stores a large number of eel fry captured by fishing, for example. Then, by operating the cooling means 5 to cool the water in the container C to a predetermined temperature, the eel fry can be put into a temporary death state. The predetermined temperature for setting the asphyxia state according to the present embodiment is set to a temperature of 1 ° C. to 7 ° C. (activity stop temperature of eel fry). The eel fry that has been put into a dead state usually stiffens and does not move while the whole body is straight (substantially straight).

しかるに、冷却手段5にて仮死状態とされたウナギの稚魚は、一匹毎にケース1に移送され、搬送手段αによって撮像手段2による撮像位置まで搬送される。本実施形態に係る搬送手段αは、複数のケース1をワイヤ等の連結手段Dにて無端状(ループ状)に連結させたものから成り、図示しない駆動源により、連結手段Dを移動させてケース1を順次搬送させ得るものとされている。   However, the eel fry that has been put to a dead state by the cooling means 5 is transferred to the case 1 one by one, and conveyed to the imaging position by the imaging means 2 by the conveying means α. The transport means α according to the present embodiment is composed of a plurality of cases 1 connected endlessly (looped) by connecting means D such as wires, and the connecting means D is moved by a driving source (not shown). The case 1 can be sequentially conveyed.

撮像手段2は、ケース1内に収容された判別対象のウナギの稚魚A(仮死状態のシラスウナギ)を撮像し得るカメラ(例えばデジタルカメラ)から成り、撮像した画像データが電気的に接続されたコンピュータ3に送信されるよう構成されている。なお、本実施形態に係る撮像手段2は、例えば200万画素(1600×1200画素)の画像を得ることが可能なデジタルカメラとされている。   The imaging means 2 is composed of a camera (for example, a digital camera) that can image a eel fry A (an asylum-seed white eel) contained in the case 1 and electrically connected to the captured image data. 3 to be transmitted. Note that the imaging unit 2 according to the present embodiment is a digital camera capable of obtaining an image of 2 million pixels (1600 × 1200 pixels), for example.

また、撮像手段2による撮像位置には、例えば背面及び上面から光を照射可能な照明手段4が配設されており、ウナギの稚魚Aをより鮮明に撮像し得るようになっている。本実施形態に係る照明手段4は、例えば白色LEDから成り、撮像手段2の撮像位置に対して背面及び上面から光を照射し得るよう構成されている。なお、照明手段4の光の照射位置は、任意設定することができる。   Moreover, the illumination means 4 which can irradiate light from the back surface and the upper surface is arrange | positioned in the imaging position by the imaging means 2, for example, and the eel fry A can be imaged more clearly. The illumination unit 4 according to the present embodiment is made of, for example, a white LED, and is configured to irradiate light from the back surface and the top surface with respect to the imaging position of the imaging unit 2. The light irradiation position of the illumination unit 4 can be arbitrarily set.

コンピュータ3(判別手段)は、撮像手段2からの画像データを受信し、その画像に基づいてウナギの稚魚の品種を判別するためのもので、本実施形態においては、判別対象がニホンウナギの稚魚であるか否かを判別し得るパーソナルコンピュータとされている。ここで、本実施形態に係る判別手段としてのコンピュータ3は、品種により互いに異なる複数の身体的特徴点に基づいてウナギの稚魚の品種を判別するものとされている。   The computer 3 (discriminating means) is for receiving the image data from the imaging means 2 and discriminating the breed of eel fry based on the image. In this embodiment, the discriminating target is the fry of Japanese eel. It is a personal computer that can determine whether or not. Here, the computer 3 as the discriminating means according to the present embodiment discriminates varieties of eel fry based on a plurality of physical feature points different from each other.

例えば、判別のための身体的特徴点の一つは、図2に示すように、ウナギの稚魚Aの全長Lと幅寸法Wとの比(L:W)から成る。すなわち、ウナギの稚魚Aの体格は、同一品種でも生育状態により異なるものの、全長Lと幅寸法Wとの比は品種により互いに異なる場合が多く、当該比を用いることにより、ニホンウナギの稚魚である可能性があるもの(可能性が高いものと低いものとの両者含む)と、可能性が殆どないものとを判別することができる。   For example, one of the physical feature points for discrimination consists of the ratio (L: W) of the total length L and the width dimension W of the eel fry A as shown in FIG. That is, although the physique of the eel fry A differs depending on the growth state even in the same variety, the ratio between the total length L and the width dimension W is often different depending on the variety, and by using this ratio, it is a Japanese eel fry. It is possible to discriminate between those that have a possibility (including both high and low possibility) and those that have little possibility.

また、判別のための身体的特徴点の一つは、ウナギの稚魚Aの一部に形成されるメラニン色素の分布状況から成る。すなわち、ニホンウナギの稚魚以外の尾部には、メラニン色素から成る斑点が分布しているものが多く、ニホンウナギの稚魚の尾部には当該斑点があまり分布していないことから、当該分布状況を用いることにより、ニホンウナギの稚魚である可能性があるもの(可能性が高いものと低いものとの両者含む)と、可能性が殆どないものとを判別することができる。   Also, one of the physical feature points for discrimination consists of the distribution of melanin pigments formed in a part of the eel fry A. In other words, the spots other than the Japanese eel fry are often distributed with spots made of melanin, and the spots are not distributed so much in the tails of the Japanese eel fry. Thus, it is possible to discriminate what is likely to be a Japanese eel fry (including both high and low possibility) and almost no possibility.

さらに、判別のための身体的特徴点の一つは、ウナギの稚魚Aのヒレの形状、大きさ又は条数から成る。すなわち、ウナギの稚魚の背びれや尾ひれは、品種により形状や大きさ、或いは背びれや尾ひれに形成された条数が異なるものが多く、当該形状、大きさ又は条数を用いることにより、ニホンウナギの稚魚である可能性があるもの(可能性が高いものと低いものとの両者含む)と、可能性が殆どないものとを判別することができる。   Further, one of the physical feature points for discrimination consists of the shape, size, or number of strips of fins of eel fry A. In other words, the dorsal fin and tail fin of eel fry are often different in shape and size, or the number of streaks formed on the dorsal fin and tail fin, and by using the shape, size or number of strips, It is possible to discriminate what is likely to be fry (including both high and low possibility) and almost no possibility.

またさらに、判別のための身体的特徴点の一つは、ウナギの稚魚Aの所定部位における骨の数から成る。すなわち、ウナギの稚魚は、品種により例えば腹椎骨数、脊椎骨数、鰓条骨数が異なるものが多く、当該骨の数を用いることにより、ニホンウナギの稚魚である可能性があるもの(可能性が高いものと低いものとの両者含む)と、可能性が殆どないものとを判別することができる。なお、ウナギの稚魚は、体が透明であることから照明手段4からの光により内部の骨の撮像を十分に行うことができるが、例えばX線の照射やCTスキャナ等により、ウナギの稚魚の内部をより精度よく撮像するようにしてもよい。   Furthermore, one of the physical feature points for discrimination consists of the number of bones at a predetermined site of the eel fry A. That is, there are many eel fry, for example, the number of abdominal vertebrae, the number of vertebrae, and the number of ribs differ depending on the breed, and by using the number of the bones, there is a possibility that it is a Japanese eel fry (possibility Can be discriminated between those having high and low values) and those having little possibility. The eel fry can be sufficiently imaged of the internal bones by the light from the illumination means 4 because the body is transparent. For example, the eel fry can be captured by X-ray irradiation or a CT scanner. You may make it image an inside more accurately.

次に、本実施形態に係る品種判別方法について図3のフローチャート及び図4の模式図を用いて説明する。
先ず、冷却手段5により容器Cを所定温度(本実施形態においては、ウナギの稚魚が1℃〜7℃となる温度)まで冷却し、仮死状態とする(仮死工程S1)。その後、仮死状態のウナギの稚魚を一匹毎に搬送手段αのケース1に収容させ、撮像位置まで搬送し(搬送工程S2)、撮像位置に達したケース1内のウナギの稚魚Aを撮像手段2にて撮像する(撮像工程S3)。
Next, the type identification method according to the present embodiment will be described with reference to the flowchart of FIG. 3 and the schematic diagram of FIG.
First, the cooling means 5 cools the container C to a predetermined temperature (in this embodiment, the temperature at which the eel fry is 1 ° C. to 7 ° C.), and puts it into a pseudo-dead state (pseudo-death process S1). Thereafter, the larvae larvae in the assassinated state are accommodated one by one in the case 1 of the transport means α and transported to the imaging position (transport process S2), and the eel fry A in the case 1 reaching the imaging position is imaged. 2 to capture an image (imaging step S3).

そして、撮像手段2で撮像された画像データがコンピュータ3に送信されるとともに、当該コンピュータ3による画像処理が行われることとなる(画像処理工程S4)。かかる画像処理工程S4は、撮像された画像を判別し得るように加工するための工程であり、例えば撮像画像中の判別対象(ウナギの稚魚A)の識別やノイズの除去等が含まれる。その後、ウナギの稚魚Aの品種が判別される(判別工程S5)。   Then, the image data picked up by the image pickup means 2 is transmitted to the computer 3 and image processing by the computer 3 is performed (image processing step S4). This image processing step S4 is a step for processing so that a captured image can be determined, and includes, for example, identification of a determination target (eel fry A) in a captured image, removal of noise, and the like. Thereafter, the breed of eel fry A is discriminated (discrimination step S5).

かかる判別工程S5は、品種により互いに異なる複数の身体的特徴点に基づいてウナギの稚魚Aの品種を判別する工程であり、本実施形態に係る身体的特徴点には、既述のように、ウナギの稚魚の全長と幅寸法との比(判別条件1)、ウナギの稚魚の一部に形成されるメラニン色素の分布状況(判別条件2)、ウナギの稚魚のヒレの形状、大きさ又は条数(判別条件3)、ウナギの稚魚の所定部位における骨の数(判別条件4)等、種々のものが挙げられる。なお、判別に用いられる条件は、判別条件(1〜4)全てであってもよく、或いは判別条件(1〜4)のうち任意選択したものであってもよい。   Such discrimination step S5 is a step of discriminating the breed of eel fry A based on a plurality of physical feature points different from each other, and the physical feature points according to the present embodiment include, as described above, Ratio of full length and width dimensions of eel fry (distinguishing condition 1), distribution of melanin pigment formed in part of eel fry (discriminating condition 2), fin shape, size or strip of eel fry Various things such as the number (discrimination condition 3), the number of bones in a predetermined part of the eel fry (discrimination condition 4), and the like can be mentioned. Note that the conditions used for determination may be all of the determination conditions (1 to 4), or may be arbitrarily selected from the determination conditions (1 to 4).

しかして、用いられる判別条件を全て満たすウナギの稚魚をニホンウナギの稚魚として判別し、何れも満たさないウナギの稚魚をニホンウナギとは異なる品種の稚魚として判別することとなる。これにより、各判別条件を単体で用いた場合では、ニホンウナギの稚魚である可能性が低いものまでニホンウナギの稚魚であると判別してしまう虞があるが、複数の判別条件を掛け合わせることで、ニホンウナギの稚魚をより精度よく判別することができる。   Therefore, the eel fry that satisfies all of the discrimination conditions used is discriminated as a Japanese eel fry, and the eel fry that does not satisfy any of them is discriminated as a fry of a different breed from the Japanese eel. As a result, when each discrimination condition is used alone, there is a risk that even if it is less likely to be a Japanese eel fry, it may be determined that it is a Japanese eel fry. Thus, Japanese eel fry can be discriminated more accurately.

その後、撮像位置から遠ざかったケース1のうち、ニホンウナギの稚魚であると判定されたものを水槽B1の上方で上下反転させ、当該水槽B1にそのウナギの稚魚を落下させて収容するとともに、ニホンウナギの稚魚でないと判定されたものを水槽B2の上方で上下反転させ、当該水槽B2にそのウナギの稚魚を落下させて収容することで、ニホンウナギの稚魚とそれ以外の品種の稚魚とを仕分けする(仕分け工程S6)。   Then, among the cases 1 that are far from the imaging position, the one determined to be a Japanese eel fry is turned upside down above the aquarium B1, and the fry of the eel is dropped and accommodated in the aquarium B1. The larvae of the Japanese eels and other varieties are sorted by inverting the larvae that have been determined not to be eels upside down above the aquarium B2, and dropping the eels into the aquarium B2 (Sorting step S6).

かかる仕分け工程S6の仕分けが終わったケース1は、上下反転して元の収容可能状態に戻り、再び仮死状態のウナギの稚魚Aを受け取って撮像位置まで搬送することとなる。なお、水槽B1には、ウナギの活動温度とされる10℃〜30℃の水が収容されており、ニホンウナギと判別されて当該水槽B1に収容された稚魚は、仮死状態から活動状態に復活することとなる。   After the sorting in the sorting step S6 is completed, the case 1 is turned upside down to return to the original accommodable state, and the eel fry A in the assassinated state is received and transported to the imaging position again. The aquarium B1 contains 10-30 ° C. water, which is the activity temperature of eels. The fry that are identified as Japanese eels and stored in the aquarium B1 are restored from the asphyxia state to the active state. Will be.

本実施形態によれば、ウナギの稚魚を仮死状態とした後、撮像してその画像に基づいて品種を判別するので、ウナギの稚魚の品種を高精度及び短時間で且つ生存状態を維持しつつ判別することができる。すなわち、仮死状態とされたウナギの稚魚Aは、通常、体全体が真直ぐな状態(略直線状)のまま硬直して動かなくなることから、撮像手段2による撮像、並びに判別手段としてのコンピュータ3による画像処理及び品種の判別を精度よく行わせることができるので、ウナギの稚魚の品種を高精度及び短時間で且つ生存状態を維持しつつ判別(本実施形態においてはニホンウナギの稚魚であるか否かの判別)できるのである。   According to the present embodiment, since the eel fry is put into a dead state and then picked up to determine the breed based on the image, the eel fry breed is maintained in a highly accurate and short time and alive state. Can be determined. In other words, the eel fry A, which has been put into a dead state, normally stiffens and remains immobile while being in a straight state (substantially linear), and therefore is imaged by the imaging means 2 and by the computer 3 as the discrimination means. Since image processing and breed discrimination can be performed with high accuracy, the breed of eel fry can be discriminated with high accuracy and in a short time while maintaining the survival state (in this embodiment, whether it is a fry of Japanese eel Can be determined).

また、ウナギの稚魚を所定温度まで冷却することにより仮死状態とするので、確実且つ安価に仮死状態とすることができるとともに、より良好に仮死状態から活動状態に復活させることができる。特に、所定温度は、1℃〜7℃の活動停止温度に設定されたので、より確実に仮死状態とすることができる。なお、ウナギの稚魚を仮死状態とし得る温度であれば、他の温度に設定してもよい。   In addition, since the eel fry is cooled to a predetermined temperature so as to be in a pseudo-dead state, it can be reliably and inexpensively brought into a pseudo-dead state and can be better restored from the pseudo-dead state to an active state. In particular, since the predetermined temperature is set to the activity stop temperature of 1 ° C. to 7 ° C., it is possible to more reliably enter into a pseudo-dead state. It should be noted that other temperatures may be set as long as the eel fry can be put into a dead state.

またさらに、本実施形態に係る搬送手段αによって仮死状態のウナギの稚魚を撮像位置まで一匹毎搬送して撮像するので、撮像及びその画像に基づく判別をより容易且つ精度よく行わせることができる。なお、多数の仮死状態のウナギの稚魚をケース1内に収容し、コンピュータ3(判別手段)による判別時、判別対象毎(撮像されたウナギの稚魚毎)に識別して識別された画像毎に判別を行ってもよい。   Still further, since the larvae of the eels in the assassinated state are transported to the imaging position one by one by the transport means α according to the present embodiment, imaging and discrimination based on the images can be performed more easily and accurately. . In addition, a large number of asymptomatic eel fry are accommodated in the case 1, and for each image identified and identified for each discrimination target (for each captured eel fry) during discrimination by the computer 3 (discrimination means). A determination may be made.

加えて、本実施形態によれば、品種により互いに異なる複数の身体的特徴点に基づいてウナギの稚魚の品種を判別するので、ウナギの稚魚の品種を高精度及び短時間で判別することができる。すなわち、遺伝により品種毎の身体的特徴点に相違があることから、その身体的特徴点を複数の判別条件として掛け合わせて判別することで、ウナギの稚魚の品種を高精度及び短時間で判別(本実施形態においてはニホンウナギの稚魚であるか否かの判別)できるのである。   In addition, according to the present embodiment, the breed of eel fry is discriminated based on a plurality of physical feature points that differ from each other depending on the breed, so that the breed of eel fry can be discriminated in a high accuracy and in a short time. . In other words, because there are differences in the physical feature points of each breed due to heredity, it is possible to discriminate varieties of eel fry in high accuracy and in a short time by multiplying the physical feature points as multiple discrimination conditions. (In this embodiment, it is possible to determine whether the fish is a Japanese eel fry).

また、判別のための身体的特徴点として、ウナギの稚魚の全長Lと幅寸法Wとの比、ウナギの稚魚の一部に形成されるメラニン色素の分布状況、ウナギの稚魚のヒレの形状、大きさ又は条数、ウナギの稚魚の所定部位における骨の数の全部又は任意組み合わせとすることにより、ウナギの稚魚の品種をより高精度で判別することができる。なお、判別に用いる身体的特徴点は、なるべく多い方が精度を向上させる上で好ましく、外観的な身体的特徴点(例えば、全長Lと幅寸法Wとの比など)と内部的な身体的特徴点(骨の数など)とを組み合わせる方が好ましい。   In addition, as physical features for discrimination, the ratio between the total length L and the width dimension W of the eel fry, the distribution of melanin pigment formed in a part of the eel fry, the shape of the fin of the eel fry, By using all or any combination of the size or number of stripes and the number of bones in a predetermined part of the eel fry, it is possible to discriminate varieties of eel fry with higher accuracy. The number of physical feature points used for discrimination is preferably as much as possible in order to improve accuracy. The appearance of physical feature points (for example, the ratio between the total length L and the width dimension W) and the internal physical points are preferred. It is preferable to combine with feature points (such as the number of bones).

以上、本実施形態について説明したが、本発明はこれに限定されず、例えば判別手段としてのコンピュータ3は、何れの形態のもの(パーソナルコンピュータの他、マイコン等)であってもよい。また、仮死状態とする方法は、本実施形態の如く活動停止温度まで冷却するものの他、電気ショックや薬品の投与等であってもよい。さらに、ウナギの稚魚の品種の判別方法は、何れの判別情報(品種により互いに異なる身体的特徴点に限定されない)であってもよく、身体的特徴点を一つ用いて判別するものであってもよい。なお、搬送手段αは、本実施形態のものに限定されず、他の形態の搬送手段(ベルトコンベア等)としてもよい。   Although the present embodiment has been described above, the present invention is not limited to this. For example, the computer 3 as the discrimination means may be of any form (a personal computer, a microcomputer or the like). Moreover, the method of making it a dead state may be administration of an electric shock, a medicine, etc. other than what cools to activity stop temperature like this embodiment. Furthermore, the method for discriminating the breed of eel fry may be any discriminating information (not limited to different physical feature points depending on the breed), and it is discriminated using one physical feature point. Also good. In addition, the conveyance means (alpha) is not limited to the thing of this embodiment, It is good also as a conveyance means (belt conveyor etc.) of another form.

ウナギの稚魚を仮死状態とした後、撮像手段で撮像した画像に基づいてウナギの稚魚の品種を判別する品種判別装置及び品種判別方法であれば、種々形態のものに適用することができる。   Any varieties discriminating apparatus and cultivar discriminating method for discriminating the varieties of eel fry based on the image captured by the imaging means after the eel fry is put into a dead state can be applied to various forms.

1 ケース
2 撮像手段
3 コンピュータ(判別手段)
4 照明手段
5 冷却手段
A ウナギの稚魚(判別対象)
1 Case 2 Imaging means 3 Computer (discrimination means)
4 lighting means 5 cooling means A eel fry

Claims (8)

ウナギの稚魚を撮像する撮像手段と、
該撮像手段で撮像した画像に基づいてウナギの稚魚の品種を判別する判別手段と、
を具備した品種判別装置であって、
ウナギの稚魚を仮死状態とした後、前記撮像手段で撮像することを特徴とする品種判別装置。
Imaging means for imaging eel fry,
Discriminating means for discriminating the breed of eel fry based on the image captured by the imaging means;
A product type identification device comprising:
A cultivar discrimination device characterized in that after the eel fry is put into a dead state, it is imaged by the imaging means.
ウナギの稚魚を所定温度まで冷却することにより仮死状態とすることを特徴とする請求項1記載の品種判別装置。   The cultivar discriminating apparatus according to claim 1, wherein the eel fry is cooled to a predetermined temperature so as to be put into a pseudo-dead state. 前記所定温度は、1℃〜7℃の活動停止温度に設定されたことを特徴とする請求項2記載の品種判別装置。   The product identification device according to claim 2, wherein the predetermined temperature is set to an activity stop temperature of 1 ° C to 7 ° C. 仮死状態のウナギの稚魚を前記撮像手段の撮像位置まで一匹毎搬送し得る搬送手段を具備したことを特徴とする請求項1〜3の何れか1つに記載の品種判別装置。   The breed discrimination device according to any one of claims 1 to 3, further comprising a transport unit capable of transporting eel fry in the asphyxia state one by one to the imaging position of the imaging unit. ウナギの稚魚を撮像し、その撮像した画像に基づいてウナギの稚魚の品種を判別する品種判別方法であって、
ウナギの稚魚を仮死状態とした後、撮像することを特徴とする品種判別方法。
A cultivar discriminating method for imaging eel fry and discriminating the varieties of eel fry based on the captured image,
A method for distinguishing varieties, characterized in that images of eel fry are imaged after being put into a dead state.
ウナギの稚魚を所定温度まで冷却することにより仮死状態とすることを特徴とする請求項5記載の品種判別方法。   6. The method for discriminating varieties according to claim 5, wherein the eel fry is cooled to a predetermined temperature so as to be in a pseudo-dead state. 前記所定温度は、1℃〜7℃の活動停止温度に設定されたことを特徴とする請求項6記載の品種判別方法。   The method according to claim 6, wherein the predetermined temperature is set to an activity stop temperature of 1 ° C to 7 ° C. 仮死状態のウナギの稚魚を撮像位置まで一匹毎搬送して撮像することを特徴とする請求項5〜7の何れか1つに記載の品種判別方法。   The varieties discrimination method according to any one of claims 5 to 7, wherein fry of eels in the assassinated state are transported and imaged one by one to the imaging position.
JP2013249697A 2013-12-03 2013-12-03 Kind identification device and kind identification method Active JP6334903B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013249697A JP6334903B2 (en) 2013-12-03 2013-12-03 Kind identification device and kind identification method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013249697A JP6334903B2 (en) 2013-12-03 2013-12-03 Kind identification device and kind identification method

Publications (2)

Publication Number Publication Date
JP2015104378A true JP2015104378A (en) 2015-06-08
JP6334903B2 JP6334903B2 (en) 2018-05-30

Family

ID=53434911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013249697A Active JP6334903B2 (en) 2013-12-03 2013-12-03 Kind identification device and kind identification method

Country Status (1)

Country Link
JP (1) JP6334903B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106234276A (en) * 2016-08-30 2016-12-21 苏州市阳澄湖三家村蟹业有限公司 A kind of flowing water culture method of Anguillar japonica

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03266922A (en) * 1990-03-15 1991-11-27 Japan Radio Co Ltd Device of discriminating scallop from fresh-water mussel
JP2004135649A (en) * 2002-10-16 2004-05-13 Mitsuo Takano Method for classifying young eel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03266922A (en) * 1990-03-15 1991-11-27 Japan Radio Co Ltd Device of discriminating scallop from fresh-water mussel
JP2004135649A (en) * 2002-10-16 2004-05-13 Mitsuo Takano Method for classifying young eel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LEANDER,N.J., ET AL.: "Species Composition and Seasonal Occurrence of Recruiting Glass Eels(Anguilla spp.) in the Hsiukulua", ZOOLOGICAL STUDIES, vol. vo.51,no.1, JPN6017035581, 2012, pages 59 - 71, ISSN: 0003643224 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106234276A (en) * 2016-08-30 2016-12-21 苏州市阳澄湖三家村蟹业有限公司 A kind of flowing water culture method of Anguillar japonica

Also Published As

Publication number Publication date
JP6334903B2 (en) 2018-05-30

Similar Documents

Publication Publication Date Title
Unsworth et al. Optimising stereo baited underwater video for sampling fish and invertebrates in temperate coastal habitats
Breckels et al. The effects of elevated temperature on the sexual traits, immunology and survivorship of a tropical ectotherm
Toledo et al. Digenetic trematodes
Guttridge et al. Novel acoustic technology for studying free-ranging shark social behaviour by recording individuals' interactions
Mehdizadeh et al. Image analysis method to evaluate beak and head motion of broiler chickens during feeding
Galván-Magaña et al. Records of white shark, Carcharodon carcharias, in the Gulf of California, Mexico
Grémillet et al. Irreplaceable area extends marine conservation hotspot off Tunisia: insights from GPS-tracking Scopoli’s shearwaters from the largest seabird colony in the Mediterranean
JP6334904B2 (en) Kind identification device and kind identification method
NO20220222A1 (en)
Falk et al. Male-like ornamentation in female hummingbirds results from social harassment rather than sexual selection
Sfakianakis et al. Lateral line deformities in wild and farmed sea bass (Dicentrarchus labrax, L.) and sea bream (Sparus aurata, L.)
Langeneck et al. First record of Acanthurus chirurgus (Perciformes: Acanthuridae) in the Mediterranean Sea, with some distributional notes on Mediterranean Acanthuridae
Knox et al. Habitat use and diving behaviour of male Australian fur seals
Gómez-Laich et al. Selfies of imperial cormorants (Phalacrocorax atriceps): what is happening underwater?
JP6334903B2 (en) Kind identification device and kind identification method
Wada Size-assortative mating and arm loss in the wild shallow-water octopus Abdopus sp.(Cephalopoda: Octopodidae)
Weitzmann et al. First sighting of Zebrasoma flavescens (Teleostei: Acanthuridae) and Balistoides conspicillum (Teleostei: Balistidae) in the Mediterranean Sea: Two likely aquarium releases
Uglem et al. Discrimination of wild and farmed Atlantic cod (Gadus morhua) based on morphology and scale-circuli pattern
US9679189B2 (en) Elapsed-time determination apparatus, deciding apparatus, deciding method, and non-transitory computer-readable recording medium storing control program
Guerrera et al. Morphology of the tongue dorsal surface in white sea bream (Diplodus sargus sargus)
Allan et al. Increasing temperature and prey availability affect the growth and swimming kinematics of Atlantic herring (Clupea harengus) larvae
Gutierrez-Gonzalez et al. A genetic evaluation of stock enhancement of blue abalone Haliotis fulgens in Baja California, Mexico
Mainwaring et al. Feathering the nest: the effects of feather supplementation to blue tit nests
Adlard et al. Multivalvulid myxozoans from eastern Australia: three new species of Kudoa from scombrid and labrid fishes of the Great Barrier Reef, Queensland, Australia
Braga et al. Analysis of the morphological variation of Doryteuthis sanpaulensis (Cephalopoda: Loliginidae) in Argentinian and Brazilian coastal waters using geometric morphometrics techniques

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20161124

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20170817

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170922

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20171116

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20180409

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20180427

R150 Certificate of patent or registration of utility model

Ref document number: 6334903

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250