WO2004010777A1 - Filiere a moules - Google Patents

Filiere a moules Download PDF

Info

Publication number
WO2004010777A1
WO2004010777A1 PCT/GB2003/003198 GB0303198W WO2004010777A1 WO 2004010777 A1 WO2004010777 A1 WO 2004010777A1 GB 0303198 W GB0303198 W GB 0303198W WO 2004010777 A1 WO2004010777 A1 WO 2004010777A1
Authority
WO
WIPO (PCT)
Prior art keywords
mussel
line
rope
sheath
outer sheath
Prior art date
Application number
PCT/GB2003/003198
Other languages
English (en)
Inventor
Ivor George Poleson
Original Assignee
Ivor George Poleson
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 Ivor George Poleson filed Critical Ivor George Poleson
Priority to AU2003255728A priority Critical patent/AU2003255728A1/en
Publication of WO2004010777A1 publication Critical patent/WO2004010777A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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 present invention relates to a mussel line having a central mussel rope and a duck resistant outer sheath, at least a portion of which is biodegradable.
  • the present invention also relates to a mussel line float comprising such a mussel line.
  • Mussels are typically farmed on mussel lines. These lines are attached to support lines held above the water by floats. A weight is attached to each of the mussel lines to ensure they hang vertically in the water.
  • the mussels attach to the line in the early stages of their life cycle. They are then allowed to grow for typically eighteen months before reaching a marketable size. They are then harvested.
  • the mussels When the mussels are young they have relatively thin shells. If a number of these birds descend on a set of mussel ropes they can consume the stock in a very short time.
  • the present invention seeks to overcome the above problem of the prior art.
  • the present invention provides a mussel line comprising a mussel rope for receiving mussels; and a duck resistant sheath surrounding the mussel rope; a portion of the sheath comprising at least one biodegradable connector portion arranged to allow separation of the central rope and the sheath on degradation of this portion.
  • the duck resistant sheath surrounds the mussel rope protecting the mussels from ducks. After a predetermined amount of time the connector portion degrades and the sheath falls away. The matured mussels can then be harvested from the rope by conventional techniques.
  • the mussel line comprises a plurality of connector portions.
  • the connector portions can comprise a strip.
  • the strip can extend parallel to the mussel rope.
  • the strip can extend non- parallel to the mussel rope.
  • the mussel rope can comprise a plurality of connector strips, preferably each strip being non-parallel to at least one other strip. Preferably, the strips intersect, dividing the sheath into a plurality of islands.
  • the sheath can comprise an outer sheath and at least one spacer separating the outer sheath from the mussel rope.
  • the spacer can be biodegradable.
  • the biodegradable connector portion can comprises a portion of the outer sheath.
  • the outer sheath can comprise at least one aperture for entry of a young mussel.
  • the outer sheath can be netting, preferably plastic netting.
  • the outer sheath can be circular or oval in cross section. Alternatively, the outer sheath can be square, rectangular or rhombohedral in cross section. All of the outer sheath can be biodegradable.
  • a mussel line float comprising a plurality of floats; at least one support rope extending between the floats; and, a mussel line, the mussel line comprising a mussel rope for receiving mussels; and a duck resistant sheath surrounding the mussel rope; a portion of the sheath comprising at least one biodegradable connector portion arranged to allow separation of the central rope and the sheath on degradation of this portion;
  • the mussel line being connected to the support rope at at least one connection point; and, the mussel line being connected to at least one weight remote from the connection point.
  • Figure 1 shows a known mussel line float
  • Figure 2 shows a mussel line according to the invention
  • Figure 3 shows a plurality of mussel lines according to the invention in cross section
  • Figure 4 shows further embodiments of mussel lines according to the invention in perspective view; and Figure 5 shows a mussel line float according to the invention.
  • Shown in Figure 1 is a known mussel line float comprising a plurality of floats 1 having a support line 2 extending therebetween.
  • the support line 2 is held above the water by the floats 1.
  • a plurality of mussel ropes 3 Attached to each rope 3 remote from the support line 2 is a weight 4 ensuring the mussel ropes 3 hang vertically.
  • the mussels attach to the mussel ropes 3 during an early stage of development and then grow to maturity. Once the mussels are mature the ropes 3 are withdrawn from the water and the mussels harvested.
  • the netting can be difficult to instal and can be easily damaged during storms at sea.
  • the mussel line comprises a central mussel rope 5.
  • the surface of the mussel rope 5 has a texture to which mussels prefer to adhere.
  • the sheath 6 Surrounding the mussel rope 5 is a duck resistant outer sheath 6.
  • the sheath 6 is plastic netting having apertures through which the young mussels can enter.
  • the sheath 6 is circular.
  • a portion of the sheath 6 comprises a biodegradable connector portion 7.
  • the mussel line according to the invention is hung vertically from a support rope (not shown) .
  • the young mussels pass through the sheath 6 and attach themselves to the rope 5. Whilst the mussels grow they are protected from the ducks by the sheath 6.
  • the connector portion 7 will eventually degrade allowing the sheath 6 to unwrap from the rope 5. By this time the mussel walls will have thickened and so the mussels will no longer be vulnerable to attack by ducks. Without the sheath ⁇ the mussel rope 5 can be withdrawn from the water and the mussels harvested by conventional means.
  • FIG. 3 Shown in Figure 3 are a number of other embodiments of a mussel line according to the invention in cross section.
  • the surrounding sheath 6 can be circular, elliptical, square, rectangular, rhombohedral or any other convenient shape which surrounds the mussel rope 5.
  • the sheath 6 has a plurality of connector portions 7 extending in a strip parallel to the mussel ropes 5 as shown.
  • the connector portions 7 extend over a substantial portion of the outer sheath 6 as shown. In an alternative embodiment all of the outer sheath ⁇ is biodegradable.
  • the connector portion is non-parallel to the mussel rope.
  • the connector portion spirals around the mussel rope.
  • the mussel line comprises two connector portion strips which spiral in opposite directions on the outer sheath around the mussel rope, splitting the outer sheath into a plurality of islands.
  • the spaces are biodegradable allowing the outer sheath to slip from the mussel rope once the spaces have degraded.
  • FIG. 5 Shown in Figure 5 is a mussel line float 8 according to the invention.
  • the mussel line float 8 comprises a plurality of floats 9 connected together by a support rope 10 held above the water as shown. Wrapped around the support rope 10 is a mussel line according to the invention as shown in Figure 2.
  • weights Connected to the mussel line at a plurality of spaced apart connection points are weights as shown.
  • the weights are separated from the connection points and ensure the mussel line hangs substantially vertically in the water so it can be colonized by mussels.
  • the mussel rope has a texture to which the mussels are willing to adhere.
  • the mussel rope can be hemp.
  • the rope can be a plastics material.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)

Abstract

L'invention concerne une filière à moules comprenant une corde à moules destinée à recevoir des moules, ainsi qu'une gaine résistant aux eiders disposée autour de cette corde. Une partie de cette gaine comprend au moins une partie de jonction biodégradable placée de façon à permettre la séparation de la corde centrale et de la gaine lors de la dégradation de ladite partie.
PCT/GB2003/003198 2002-07-25 2003-07-25 Filiere a moules WO2004010777A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003255728A AU2003255728A1 (en) 2002-07-25 2003-07-25 A mussel line

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0217212.0 2002-07-25
GBGB0217212.0A GB0217212D0 (en) 2002-07-25 2002-07-25 A mussel line

Publications (1)

Publication Number Publication Date
WO2004010777A1 true WO2004010777A1 (fr) 2004-02-05

Family

ID=9941053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/003198 WO2004010777A1 (fr) 2002-07-25 2003-07-25 Filiere a moules

Country Status (3)

Country Link
AU (1) AU2003255728A1 (fr)
GB (1) GB0217212D0 (fr)
WO (1) WO2004010777A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107593556A (zh) * 2016-07-07 2018-01-19 大连旅顺星汇绳网有限公司 贻贝的附苗器
EP2996466B1 (fr) * 2013-05-15 2019-10-23 R-D Mytis Ltd. Corde à boucles de mytiliculture et mytiliculture associée

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591855A1 (fr) * 1985-12-24 1987-06-26 Marolleau Francis Dispositif de protection contre les crabes et les perceurs.
FR2636206A2 (fr) * 1983-11-08 1990-03-16 Lhonneur Pierre Filet tubulaire destine a etre utilise en mytiliculture
FR2721478A1 (fr) * 1994-06-22 1995-12-29 Linpac Plastics Espana Sa Dispositif et procédé destinés à protéger des couchots utilisés en mytiliculture.
US5511514A (en) * 1992-02-18 1996-04-30 Pernaful Holdings Ltd Method of cultivating shellfish

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636206A2 (fr) * 1983-11-08 1990-03-16 Lhonneur Pierre Filet tubulaire destine a etre utilise en mytiliculture
FR2591855A1 (fr) * 1985-12-24 1987-06-26 Marolleau Francis Dispositif de protection contre les crabes et les perceurs.
US5511514A (en) * 1992-02-18 1996-04-30 Pernaful Holdings Ltd Method of cultivating shellfish
FR2721478A1 (fr) * 1994-06-22 1995-12-29 Linpac Plastics Espana Sa Dispositif et procédé destinés à protéger des couchots utilisés en mytiliculture.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2996466B1 (fr) * 2013-05-15 2019-10-23 R-D Mytis Ltd. Corde à boucles de mytiliculture et mytiliculture associée
CN107593556A (zh) * 2016-07-07 2018-01-19 大连旅顺星汇绳网有限公司 贻贝的附苗器

Also Published As

Publication number Publication date
AU2003255728A1 (en) 2004-02-16
GB0217212D0 (en) 2002-09-04

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