WO2001058254A1 - Dispositif permettant de ramasser des mollusques et des crustaces et application speciale d'une seine a larges mailles - Google Patents

Dispositif permettant de ramasser des mollusques et des crustaces et application speciale d'une seine a larges mailles Download PDF

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Publication number
WO2001058254A1
WO2001058254A1 PCT/NO2001/000035 NO0100035W WO0158254A1 WO 2001058254 A1 WO2001058254 A1 WO 2001058254A1 NO 0100035 W NO0100035 W NO 0100035W WO 0158254 A1 WO0158254 A1 WO 0158254A1
Authority
WO
WIPO (PCT)
Prior art keywords
shellfish
collecting device
seine
millimetres
net
Prior art date
Application number
PCT/NO2001/000035
Other languages
English (en)
Inventor
Bjørn ASPØY
Original Assignee
Aspoey Bjoern
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 Aspoey Bjoern filed Critical Aspoey Bjoern
Priority to AU2001230638A priority Critical patent/AU2001230638A1/en
Publication of WO2001058254A1 publication Critical patent/WO2001058254A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K73/00—Drawn nets
    • A01K73/12—Nets held vertically in the water, e.g. seines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/50—Culture of aquatic animals of shellfish
    • A01K61/54—Culture of aquatic animals of shellfish of bivalves, e.g. oysters or mussels
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • the invention relates to a shellfish-collecting device of the kind put into the sea to catch spat of shellfish in its pelagic phase of life, during which the spat follows the motion of the water in order to settle, after some time, in a permanent growing-place in order to grow further, this permanent growing-place being formed in this case by the shellfish-collecting device or several shellfish-collecting devices, together forming an installation for the catching and farming of shellfish spat.
  • Shellfish-collecting devices of the kind in question thus serve to be used in the farming of various species of shellfish, for example blue mussels, wherein the stock for the farming, the eggs, spat, is caught and "collected” in nature itself.
  • shellfish-collecting devices of the kind in question a generation of shellfish, for example blue mussels, starts when one or more shellfish-collecting devices is/are put into the sea in the spawning period of the respective type of shellfish, in order to catch shellfish spat in its pelagic period of life, during which the spat is drifting freely about and is following the motion of the water, to become lodged finally in a suitable, stationary growing-place .
  • shellfish-collecting devices form a kind of barriers that pelagic spat of shellfish will come against and fix itself to, in order then to remain lodged on the shellfish- collecting device in question, and take nourishment from the water flowing past at any time.
  • the shellfish will grow in a number of months to a size considered favourable for harvesting.
  • a very simple but less efficient shellfish-collecting device of the kind in question consists of a rope hanging down into the sea, either vertically from an above-lying float or in a curve between two points of attachment near the water surface. It is known to use strips of seine (mesh resembling a fishnet) instead of ropes. In a third embodiment a rope is passed through meshes along each strip of seine to benefit the attachment area for the shellfish spat. This provides somewhat improved efficiency, but it has turned out to be impossible to exploit the growth potential at a farming- location by means of shellfish-collecting devices of this known type.
  • the object of the present invention has been to provide a shellfish-collecting device of the specified kind, formed to provide sufficient "stocking" of spat, and at the o same time ensure good utilization of the supply of nutrients and oxygen at a farming location.
  • the present invention is based on the provision of a shellfish-collecting device with an optimal balance between attachment area, where the shellfish spat may attach, and flow area for flowing water bringing nutrients and oxygen.
  • Said object is realized through a shellfish-collecting device and an application thereof, as specified in the following Claims 1 and 4.
  • a shellfish-collecting device is based on the use of a seine/net resembling a fishnet, and distinguishes itself through a coarse-meshed net with a mesh width of between 150 and 400 millimetres, the thread, from which the mesh is made, having a diameter in the range of 5-12 millimetres.
  • a preferred shellfish-collecting seine according to the invention may thereby advantageously have a mesh width of about 200 millimetres and a thread diameter of about 8 millimetres .
  • Fig. 1 shows a schematic overview of a shellfish-collecting seine in the position of use
  • Fig. 2 is a section of an upper portion of the shellfish- collecting seine of Fig. 1, and shows a partial view on a considerably larger scale than that in Fig. 1.
  • a shellfish-collecting seine according to the invention is assumed to be placed in its position of use in the sea, almost like a standard fishnet, with its headline with floats/float means, its foot line with sinkers, and the intermediate net bus, and where the headline may be in the water surface and the foot line on the sea floor, the "shellfish net” is identified by reference numeral 10, headline by 12, headline extension lines by 12a and 12b and foot line with sinkers/sinking means by 14.
  • a polyethylene tube 16, 100 m long is used as the float means, from which the headline 12 of the shellfish net 10, which is the carrying line of the net, is suspended by means of straps 18, so that the headline 12 and its extensions 12a and 12b absorb tensile loads in order to reduce the strain on the farming body 16.
  • the shellfish-collecting net of the embodiment shown is assumed to have a depth equalling about 2 metres.
  • the mesh width should be in the range of 150-400 millimetres, and the thread diameter should be in the range of 5-12 millimetres.
  • the tube material has a modulus of elasticity in the range of 590-1080 N/mm 2 , a tensile strength of 10-38 N/mm 2 and a flexural strength of 9-21 N/mm 2 .
  • the headline 12 and its extension lines 12a and 12b, which are to be secured to moorings not shown, are sized to absorb the loads.
  • a sinker line 14 may have the same length as the buoyancy tube 16.
  • the headline 12 with extensions 12a, 12b may constitute about 130 metres totally.
  • the sinker line 14 and float line (tube) 16 may be formed as desired and required.
  • a hem or elongate stocking filled with sand along the foot line may serve as a sinker means.
  • Weights of stainless steel or iron, wire or reinforcement bars of carbon steel may possibly replace the sand stocking version. Weighting per meter of foot line may for example amount to 0,5 kg/m.
  • the specified range of mesh widths of the net and the range of thread diameters are critical to the present invention, because it is the extremely coarse-meshed seine of extremely thick thread, resulting from these mesh widths and thread thicknesses, that ensures the best conditions of growing for the lodged shellfish, through permanently good flow conditions for water bringing nutrients as well as oxygen to the shellfish growing on the seine, even when the shellfish are big and when the shellfish are sitting close together on the seine.

Abstract

L'invention concerne un dispositif permettant de ramasser des mollusques et des crustacés. Ce dispositif est jeté dans la mer afin de récolter un naissain de mollusques et de crustacés en phase pélagique mais également afin de former un point de fixation et un emplacement pour le développement de ces mollusques et crustacés. Le naissain de mollusques et de crustacés, logé sur ce dispositif de collecte permettant de ramasser des mollusques et des crustacés, se nourrit d'éléments nutritifs sous forme de proie ou d'autres éléments nutritifs distribués conjointement avec de l'oxygène d'eau passant à côté /à travers ledit dispositif et se développe pendant un certain nombre de mois en mollusques/crustacés en vue d'être collectés, en fonction de la quantité d'alimentation et des conditions générales du développement. En vue d'obtenir un équilibre optimal entre une zone de fixation des mollusques et des crustacés et une zone de passage de l'eau par mètre carré, réparti de manière égale à travers le filet (10) d'une seine de ramassage de mollusques et de crustacé ressemblant à un filet de pêche, la taille des mailles du filet sont comprises dans la plage de mailles allant de 150 à 400 millimètres, alors que le diamètre du fil des mailles représente entre 5 et 12 millimètres. La seine de ramassage de crustacés est placée dans la mer comme un filet de pêche classique, et comprend les têtes de filet (12) pourvues d'un organe flotteur (16) et la ligne de fond (14) équipée de moyens plongeants.
PCT/NO2001/000035 2000-02-11 2001-02-01 Dispositif permettant de ramasser des mollusques et des crustaces et application speciale d'une seine a larges mailles WO2001058254A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001230638A AU2001230638A1 (en) 2000-02-11 2001-02-01 Shellfish-collecting device and particular application of a coarse-meshed seine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20000713 2000-02-11
NO20000713A NO314282B1 (no) 2000-02-11 2000-02-11 Skjellsamleranlegg

Publications (1)

Publication Number Publication Date
WO2001058254A1 true WO2001058254A1 (fr) 2001-08-16

Family

ID=19910724

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2001/000035 WO2001058254A1 (fr) 2000-02-11 2001-02-01 Dispositif permettant de ramasser des mollusques et des crustaces et application speciale d'une seine a larges mailles

Country Status (3)

Country Link
AU (1) AU2001230638A1 (fr)
NO (1) NO314282B1 (fr)
WO (1) WO2001058254A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067706A2 (fr) * 2004-01-15 2005-07-28 Van Ysseldijk, Pieter Procede et dispositif de culture de mollusques bivalves et navire destine en particulier a etre utilise avec lesdits procede et dispositifs
NL1033564C2 (nl) * 2007-03-20 2007-12-11 Marinus Padmos Een inklapbare mosselzaad invanginstallatie (MZI).
WO2008148946A1 (fr) * 2007-06-08 2008-12-11 Coppin Francois Dispositif de lestage pour filet de pèche
ITPI20080113A1 (it) * 2008-11-03 2010-05-03 Corderia Camuna Di Benedetti Battis Ta E Andrea S Struttura di corda
CN102835363A (zh) * 2012-08-24 2012-12-26 李三川 一种捕捉河蚌的工具
CN108157309A (zh) * 2018-05-14 2018-06-15 烟台工程职业技术学院 一种河蚌捕捉收集装置
JP2021512611A (ja) * 2018-02-02 2021-05-20 マールボロ オイスターズ リミテッド 貝類養殖装置、システムおよびその使用方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017857A (en) * 1959-12-21 1962-01-23 Munz Otto John Sea farming

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017857A (en) * 1959-12-21 1962-01-23 Munz Otto John Sea farming

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067706A2 (fr) * 2004-01-15 2005-07-28 Van Ysseldijk, Pieter Procede et dispositif de culture de mollusques bivalves et navire destine en particulier a etre utilise avec lesdits procede et dispositifs
WO2005067706A3 (fr) * 2004-01-15 2006-03-16 Ysseldijk Pieter Van Procede et dispositif de culture de mollusques bivalves et navire destine en particulier a etre utilise avec lesdits procede et dispositifs
NL1033564C2 (nl) * 2007-03-20 2007-12-11 Marinus Padmos Een inklapbare mosselzaad invanginstallatie (MZI).
WO2008148946A1 (fr) * 2007-06-08 2008-12-11 Coppin Francois Dispositif de lestage pour filet de pèche
ITPI20080113A1 (it) * 2008-11-03 2010-05-03 Corderia Camuna Di Benedetti Battis Ta E Andrea S Struttura di corda
WO2010061258A2 (fr) 2008-11-03 2010-06-03 Guido Benedetti Battista Structure de câble de fonçage et procédé de production de celle-ci
WO2010061258A3 (fr) * 2008-11-03 2010-09-02 Guido Benedetti Battista Structure de câble de fonçage et procédé de production de celle-ci
CN102835363A (zh) * 2012-08-24 2012-12-26 李三川 一种捕捉河蚌的工具
JP2021512611A (ja) * 2018-02-02 2021-05-20 マールボロ オイスターズ リミテッド 貝類養殖装置、システムおよびその使用方法
US11083175B2 (en) 2018-02-02 2021-08-10 Marlborough Oysters Limited Shellfish growing apparatus, system and method of using same
JP7105506B2 (ja) 2018-02-02 2022-07-25 マールボロ オイスターズ リミテッド 貝類養殖装置、システムおよびその使用方法
CN108157309A (zh) * 2018-05-14 2018-06-15 烟台工程职业技术学院 一种河蚌捕捉收集装置

Also Published As

Publication number Publication date
NO20000713L (no) 2001-08-13
NO314282B1 (no) 2003-03-03
NO20000713D0 (no) 2000-02-11
AU2001230638A1 (en) 2001-08-20

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