GB2286756A

GB2286756A - Lure for sea lice

Info

Publication number: GB2286756A
Application number: GB9403386A
Authority: GB
Inventors: John Baxter Wilson Binnie
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-22
Filing date: 1994-02-22
Publication date: 1995-08-30
Anticipated expiration: 2014-02-22
Also published as: GB9403386D0; GB2286756B

Abstract

A lure comprises a luring surface 1 made from a material that transmits or diffuses light and a light source 2 placed inside or behind the luring surface to illuminate a volume of water 3. The light entices sea lice (Lepeophtheirus Salmonis and Calious Elongatus) to congregate close to the luring surface 1 for the purpose of trapping or killing. <IMAGE>

Description

LURE FOR LEPEOPHTHEIRUS SALMONIS AND CALIGUS ELONGATUS (SEA LICE).

This invention relates to a luring device. To lure for the purposes of trapping, in particular, Lepeophtherius Salmonis and Caligus Elongatus (Sea 1 Lice). in all stages of their life cycle, and in general other parasites, copepods and planktonic creatures.

Sea Lice infestation on farmed fish is widespread, and when infested by Sea. Lice the health of the fish suffers. The general methods of treating fish infested with Sea Lice is by regular bathing in pesticide with subsequent release to the marine environment of spent pesticide, which can be harmful to marine life and the environment, and also costly. To a lesser extent the fish specie wrasse are used as scavengers to remove the Sea Lice from the fish by consumption. An object of the present invention is to provide a lure to entice the Sea Lice in the water and on the fis to congregate in the space adjacent to the lure for the purposes of trapping, thus reducing the number of Sea Lice in the water which infest the fish.

According to the present invention there is provided a lure, comprising a luring surface of any shape or size to suit any particular application, made of any maerial rigid or flexible which allows light to be emitted, transmitted, reflected, refracted or diffracted. A light source, incandescent, fluorescent or electroluminescent, single or multiple wavelength, natural or artificial in origin, of constant or varying intensity, placed in front, behind, inside or part of the luring surface which by the above optical principles illuminates a volume of water around the lure.

The illuminated volume of water or capture zone (the size of which depends largely upon the size and shape of the luring surface, te intensity of the light source and the turbidity of the water) is that volume of water which exhibits different light intensity from tat of the surrounding water The invention will be more fLlly understood in the light of the following description on one specific embodiment. The description is made with reference to the accompanying drawings of which Figure 1 is an elevation of a lure in the form of a sphere or container.

Figure 2 is an end elevation of a lure in the form of a square flat sheet.

The first embodiment in Figure 1 shows a lure with a luring surface 1 in the form of a sphere or container with the light surface 2 placed inside the luring surface 1. The resulting volume of water or capture zone 3 illuminated by the luring surface 1 and the non-illuminated surrounding water 4.

The second embodiment in Figure 2 shows a lure with a luring surface 1 in the form of a square flat sheet with the light source 2 in front of the luring surface 1 and to side . The resulting volume of water illuminated by the luring surface (capture zone) 3 and the non-illuminated surrounding water 4.

The capture zone z on Side A is produced by reflective light from the luring surface and the capture zone 3 on Side B is produced by transmitted light through the luring surf ace 1.

The luring surface 1 entices the Sea Lice to enter the Illuminated capture zone 3 and congregate ever closer to the luring surface 1 whereby the Sea Lice can be dealt with in a manner conducive with the luring surface deployment, thereby, reducing the number of sea lice in the water to infest the fish. e=g. trapped by netting, filtering and separation, removed by pumping or lifting, killed by crushing, parricide or irradiation.

Claims

CLAIMS 1. According to the present invention there is provided a lure, comprising a luring surface of any shape or size to suit any particular applications made of any material rigid or flexible which allows light to b emitted, transmitted, reflected, refracted or diffracted. P light source, Incandescent, fluorescent or electroluminescent, single or multiple wavelength, natural or artificial in origin, of constant or varying intensity, placed in front, behind, inside or part of the luring surface which Illuminates a volume of water around the lure.

The illuminated volume of water or capture zone (the size of which depends largely upon the size and shape of the luring surface, the intensity of the light source and the turbidity ef the water) is that volume of water which exhibits different light intensity from that of the surrounding water.
2. A lure as in laim 1. whereby the light source used produces light in the ultra violet range of he electromagnetic spectrum.
3. A lure as in Claim 1, whereby the light source used produces light In the infra red range of the electromagnetic spectrum
4. A lure as in Claim 1. whereby the light source is a
5. A lure as in Claims t to 4 whereby the light source is provided with a means of modulation in frequency and amplitude, producing pulses and flashes of light at various frequencies and mark space ratios.
6. A lure as in Claims 1-5 whereby a lens or prism or series of lens or prisms are placed between the light source and the luring surface producing beams of light with dark areas between the light beams.
7. A lure as in Claims 1-6 whereby the luring surface is covered by a perforated mask, grid or mesh in which the said perforated mask, grid or mesh is provided with a means of recIprocatIon or oscillation with respect to the luring surface.
8 lure as in Claims 1-7 whereby the light source is provided with a means of reciprocating movement in all directions with respect to the luring surface.
9. A lure as in Claims 1-8 whereby the luring surface is covered with a suitable soft surface that allows the sea lice's invasive frontal filament to attach to the luring surface.
10. A lure as in Claims 1-9 whereby the luring surface is impregnated with parricide.
11. lure as in Claims 1-8 whereby the luring surface is a semi permeable membrane in the form of a container to hold parricide which is released only when the sea lice's invasive frontal filament penetrates the membrane.
12. H lure as in Claims 1-11 whereby the luring surface is provided with a reciprocating mechanical scraper or crusher to remove the sea lice from the luring surface on a continuos basis.
13. A lure as in Claims 1-12 whereby the luring device is provided with means of rotation or reciprocation, and fitted with a static scraper/collector or cylinder/collector, whereby the sea lice can be removed from the luring surface on a continuous basis.
14. A lure as in Claims 1-13 whereby the luring surface is provided with a means of propulsion so that the lure can be moved into different areas and different depths.