Method of Establishing Clam Bed Colonies and Mobile Floating Hatchery for Implementing Same

a technology of clam beds and hatcheries, which is applied in pisciculture, climate change adaptation, application, etc., can solve the problems of increasing the population of clams, not being satisfied, and scientific efforts failing to provide an adequate method of repopulating clam beds

Inactive Publication Date: 2013-12-26
MATTHEWS PAUL C +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a method of establishing clam beds by raising clam larvae in a protected environment with adequate food and habitats, and keeping them isolated from predation. The clab larvae are then released at the suitable location for seeding the bed. The method is facilitated by a mobile hatchery / nursery that can breed and rear clam larvae and conveniently release them at the desired location. The mobile hatchery / nursery is designed to function in offshore environments, and the tanks are lined with non-toxic coatings to ensure the clam larvae are not adversely affected during the move. Overall, the invention provides a safe and efficient method for establishing clam beds.

Problems solved by technology

Attempts over the last 20 years to increase the population of clams have not heretofore proved to yield impressive results.
In accordance with the current state of the art, the clam sperm, egg & subsequent larvae are handled in a clinical laboratory setting, yielding less that satisfying results.
But the fact remains, that such scientific endeavors have failed to provide an adequate method of repopulating clam beds.
As such, they are not provided with propellers or other form of mobility.
Such system may expose the clams to predator organisms, parasitic attack and / or other contamination.
At this advanced size, as mentioned above, they do not exhibit an effective degree of burrowing when released.

Method used

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  • Method of Establishing Clam Bed Colonies and Mobile Floating Hatchery for Implementing Same
  • Method of Establishing Clam Bed Colonies and Mobile Floating Hatchery for Implementing Same

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Embodiment Construction

[0015]A method is described for establishing a clam bed at a desired location in bays and other suitable aquatic locations. In accordance with the method, clam larvae are raised in a protected environment in which they are provided with adequate food and habitat requirements, and kept isolated from predation by natural predators. The clam larvae are maintained in this environment throughout the first larval stage, referred to as the trochophore stage of development, when the larvae are particularly vulnerable to mortality. During the next stage of development, which, depending on water temperature, is believed to occur between about 7 to 14 days after fertilization (formation of zygotes) the larva is called a veliger, because it has a velum (Latin: “curtain”), a sail-shaped organ that extends from the miniature larval shell which is forming. This structure helps, among other things, to enable the clam to be mobile in the water. At this point (i.e., the veliger stage, referred to alt...

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Abstract

A method for establishing a clam bed which includes raising clam larvae in a captive environment in which they are provided with adequate food and habitat requirements and kept isolated from predation by natural predators. In addition, a mobile, floating hatchery / nursery facilitates implementation of the method by providing a captive environment.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of co-pending application Ser. No. 10 / 358,092, filed Feb. 4, 2003 entitled METHOD OF ESTABLISHING CLAM BED COLONIES AND MOBILE FLOATING HATCHERY FOR IMPLEMENTING SAME, which in turn claims the benefit of U.S. Provisional Application No. 60 / 354,334 filed Feb. 5, 2002 entitled MOBILE FLOATING HATCHERY AND METHOD OF SPAWNING FISH USING SAME.BACKGROUND OF THE INVENTION[0002]The present invention relates to a method of establishing clam bed colonies by a captive-reared clam releasing program, and mobile floating hatchery for facilitating the implementation of the method and which is usable, as well, for spawning other aquatic species of shellfish and finfish.[0003]Attempts over the last 20 years to increase the population of clams have not heretofore proved to yield impressive results. For example, there are significantly reduced numbers of clams (specie Mercenaria mercenaria) remaining harvestable in the bay...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01K61/00
CPCA01K61/002A01K61/60Y02A40/81A01K61/54
Inventor MATTHEWS, PAUL C.BRADLEY, JOHN G.
Owner MATTHEWS PAUL C
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