# US 2019/0313631 A1 · Method for controlling aurelia spp. blooms in harbors

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- Number: US 2019/0313631 A1
- Document ID: US20190313631A1
- Status: Published application
- Kind: A1
- Application number: 16/260,060
- Filed: 2019-01-28
- Published: 2019-10-17
- Earliest claimed: 2018-04-13
- Assignees: Institute of Oceanology, Chinese Academy of Sciences
- Applicants: Institute of Oceanology, Chinese Academy of Sciences
- Inventors: Song FENG; Fang ZHANG; Jianing LIN; Minxiao WANG; Shiwei WANG; Song SUN
- Web page: https://patentgrep.com/patent/US20190313631A1

## CPC

- A01M 29/30: preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
- C02F 1/68: by addition of specified substances, e.g. trace elements, for ameliorating potable water (medicinal water A61K)
- C09D 5/16: Antifouling paints; Underwater paints
- C09D 115/02: Rubber derivatives containing halogen
- C09D 193/04: Rosin
- C02F 2103/007: {Contaminated open waterways, rivers, lakes or ponds}
- C02F 2303/20: Prevention of biofouling
- A01M: CATCHING, TRAPPING OR SCARING OF ANIMALS (appliances for catching swarms or drone-catching A01K57/00; fishing A01K69/00 - {A01K99/00}; biocides, pest repellants or attractants A01N); APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A method for controlling Aurelia spp. blooms in harbors includes: designing different sites at equal intervals in an area in spring, collecting ephyrae of Aurelia spp. with an I-type trawl net for zooplankton from bottom to surface, determining whether polyps of Aurelia spp. inhabit in the vicinity of the sites; seeking large floating substrates that the polyps attach to using scuba diving in the determined habitats of the polyps; dragging the substrates to a shore base and scraping off all organisms attached to bottom surfaces of the substrates in a physical manner, then air drying the substrates for 7 days or more; and applying an antifouling paint on the bottom surfaces of the dried substrates followed by drying, then returning the substrates back to their original sites in the sea to control the bloom of Aurelia spp. in the area.

## Claims

### Claim 1

A method for controlling an Aurelia spp. bloom in a harbor, comprising:
1) designing different sites (≤10) at equal intervals in an area to be in spring, collecting Aurelia spp. ephyrae with an I-type trawl net for zooplankton from bottom to surface, determining whether Aurelia spp. polyps inhabit in the vicinity of the sites;
2) seeking large floating substrates that the polyps attach to using scuba diving in the determined habitats of the polyps;
3) dragging the substrate to a shore base and scraping off all organisms attached to bottom surfaces of the substrates in a physical manner, then air drying the substrates for more than 7 days; and
4) applying an antifouling paint to the bottom surfaces of the dried substrates followed by drying, then returning the substrates back to original sites in the sea to control the bloom of Aurelia spp. in the area.

### Claim 2 (depends on 1)

The method of claim 1, wherein in step 1), different sites (≤10) are designed at equal intervals in the area in spring (from April to May). The Aurelia app. ephyrae are collected with the I-type trawl net for zooplankton from bottom to surface to determine whether the Aurelia spp. polyps inhabit in the vicinity of the sites; if Aurelia spp. ephyrae are found in a certain site, then the polyps habitat near the site; if no ephyrae are found in this area, the area is further expanded till the Aurelia spp. ephyrae are found.

### Claim 3 (depends on 1)

The method of claim 1, wherein in step 2), the Aurelia spp. polyps are sought using a scuba diving in an area with reduced water flow near the site where Aurelia spp. ephyrae are found.

### Claim 4 (depends on 1)

The method of claim 1, wherein in step 3), all organisms attaching to the bottom surfaces of the floating substrates with polyps attached thereto are completely scraped off in a physical manner, and then the scraped substrates are dried in the sun for more than 7 days.

### Claim 5 (depends on 1)

The method of claim 1, wherein in step 4), 2-3 layers of the antifouling paint are applied on the bottom surfaces of the substrates, with a paint film of 50-75 μm in thickness.