Abalone Software Free Download
Stina Eastlund
Abalones live all over the world. They can be seen along the waters of every continent, except the Atlantic coast of South America, the Caribbean, and the East Coast of the United States. Most abalones are found in cold waters, along the coasts of New Zealand, South Africa and Australia, and Western North America and Japan in the Northern Hemisphere. On the Chilean Pacific coast, the species called loco ("Concholepas concholepas") has a hard, black shell and is eaten by many people.
The shell of the abalone is known for being very strong. It is made of very tiny calcium carbonate tiles stacked like bricks. Between the layers of tiles is a sticky protein substance. Allergic skin reactions and asthma attacks can happen when breathing the dust made when these tiles are broken down.
Sport harvesting of red abalone is allowed with a California fishing license and an abalone stamp card. Abalone may only be taken using breath-hold techniques: freediving or shore picking. SCUBA diving for abalone is strictly not allowed. Abalone harvesting is not allowed south of the mouth of the San Francisco Bay. There is a size minimum of seven inches measured across the shell and a limit of three per day and 24 per year that can be taken. Abalone may only be taken in April, May, June, August, September, October, and November, but they may not be taken in July, December, January, February, or March. Transportation of abalone is only legal while the abalone is still attached to the shell. The sale of sport-caught abalone is illegal, including the shell. Only red abalone may be taken; black, white, pink, and flat abalone are protected by law.
Abalone divers normally wear a thick wetsuit, including a hood, booties, and gloves. They also wear a mask, snorkel, weight belt, abalone iron, and abalone gauge. It is common to take abalone in the water a few inches up to 10 m/28' deep. Fewer freedivers can work deeper than that. Abalone is usually found on rocks near food sources (kelp). An abalone iron is used to pry the abalone from the stone before it can fully clamp down. Visibility usually is five to ten feet. Divers commonly dive out of boats, kayaks, tube floats, or directly off the shore. An eight-inch abalone is considered a good catch, a nine-inch would be very good, and a ten-inch plus (250mm) abalone would be an excellent catch. Rock- or shore-picking is different from diving, where the rock picker feels below rocks during low tides for abalone.
There has been a trade-in diving to catch abalones off parts of the United States coast before 1939. In World War II, many of these abalone divers were recruited into the United States armed forces and trained as divers who can perform military combat and operations underwater. There are also known as frogman.
There is a worldwide black market in abalone meat collection and export. In New Zealand, where abalone is called pāua in the Māori language, this can be a particular problem. The right to harvest pāua can be granted legally under Māori customary rights. When such permits are overused, it is difficult to police. The legal daily limit is ten pāua per diver with a minimum shell length of 125 mm. Many Ministry of Fisheries officers strictly enforce the limit with the help of the police. Pāua' poaching' is a major industry in New Zealand, with many thousands of abalones being stolen, mostly undersized. Convictions have caused the removal of diving gear, boats, and motor vehicles, fines, and, in rare cases, imprisonment. The Ministry of Fisheries expects in the year 2004/05, nearly 1000 tons of pāua will be poached, with 75% of that being undersized.[4]
The largest abalone in South Africa, "Haliotis midae," can be found along about two-thirds of the country's coastline. Abalone-diving has been a recreational activity for many years, but stocks are currently being threatened by illegal commercial harvesting.
Marine organisms are increasingly being investigated as sources of bioactive molecules with therapeutic applications as nutraceuticals and pharmaceuticals. In particular, nutraceuticals are gaining popularity worldwide owing to their therapeutic potential and incorporation in functional foods and dietary supplements. Abalone, a marine gastropod, contains a variety of bioactive compounds with anti-oxidant, anti-thrombotic, anti-inflammatory, anti-microbial, and anti-cancer activities. For thousands of years different cultures have used abalone as a traditional functional food believing consumption provides health benefits. Abalone meat is one of the most precious commodities in Asian markets where it is considered a culinary delicacy. Recent research has revealed that abalone is composed of many vital moieties like polysaccharides, proteins, and fatty acids that provide health benefits beyond basic nutrition. A review of past and present research is presented with relevance to the therapeutic potential of bioactive molecules from abalone.
My husband bought these baby abalone from the nearby Japanese supermarket and wanted to make it himself so I told him how to cook it. It was interesting for me to watch him prepare food in the kitchen because he normally just barbecues.
Abalone are broadcast spawners, meaning that they release sperm and eggs into the water column where fertilization occurs. Planktonic larvae drift in the water column for a period of 10 to 14 days when they go through metamorphosis and settle onto rocky bottoms. As adults, abalone graze on algae and diatoms.
Abalone typically have a small home range and in order for successful fertilization males and females must be in close proximity. When the density of adult spawners is too low, their ability to fertilize and successfully reproduce is hindered by a relatively short period of gamete (egg and sperm) viability. Evidence suggests that populations may decline due to lack of reproduction when densities drop below 0.30 to 0.15 abalone per square meter.
Pinto abalone (Haliotis kamtschatkana) ranges from Baja California, Mexico to Alaska. It is the only abalone species found in Washington state, British Columbia and Alaska and is therefore also referred to as the "Northern" abalone. Abalone exist in aggregations and are associated with complex rocky reef habitat. Pinto abalone in Washington State are generally found between water depths of 9 to 60 feet. The abalone's specific habitat associations and distribution in relatively shallow water makes them particularly vulnerable to harvest.
The main sensitivity of Northern abalone to climate change is likely to be from direct physiological responses to predicted decreases in pH. In laboratory experiments, elevated carbon dioxide levels led to decreased larval survival and increased shell abnormalities in Northern abalone. In other abalone species, simulated ocean acidification conditions have also resulted in decreased hatching rates and reduced larvae survival. Potential climate-related changes in preferred habitat of kelp beds with coralline algae could increase the sensitivity of this species, as these habitats may be sensitive to increasing sea surface temperature and could experience declines, thus limiting potential abalone habitat. Increases in sea surface temperature could also lead to decreased abalone reproduction and increased mortality. Given the current low population densities and recruitment levels of Northern abalone, any future threats from lower pH or increasing temperature could have an even greater impact on this species.
A commercial fishery for pinto abalone was never authorized in Washington State. Historically, intertidal subsistence harvest occurred but the magnitude and extent are not well reported. Pinto abalone were first classified in Washington as shellfish in 1959 when a daily personal harvest possession limit of 3 was imposed. In 1980 a 3.5 inch minimum harvest size was implemented. In the early 1990's fisheries biologists responded to signs of pinto abalone population decline by imposing harvest gear restrictions, reducing the daily possession limit and increasing the minimum harvest size to 4 inches. Despite these management measures populations continued to decline and in 1994 the fishery was closed and has remained closed ever since.
Despite the harvest closure in 1994, Washington State abalone populations continue to decline. Abundance may be too low in Washington State to allow reproductive success. Ongoing and historical studies conducted by WDFW in the San Juan Archipelago, a region of historically healthy abalone populations have shown more than a 97 percent decline in surveyed abalone population abundance between 1992 and 2017 (Rothaus et al. 2008, WDFW unpublished data). Average pinto abalone density from the most recent survey was 0.005 abalone per meter squared. Average densities of pinto abalone have been below the presumed minimum threshold for successful spawning since 1994.
Pinto abalone have been listed as a "Species of Concern" by the Federal National Oceanographic and Atmospheric Administration (NOAA) since 2004. In 2009, pinto abalone (referred to commonly as northern abalone in Canada) were listed as "Endangered" under Canada's Species at Risk Act. In 2013 NOAA received two petitions to list pinto abalone under the Federal Endangered Species Act. Ultimately, NOAA did not recommend Federal protection for the species, citing that it did not meet criteria of being in danger of extinction throughout the entirety of its range. In Washington State, pinto abalone were designated a State Endangered Species in 2019.
Despite the closure of the recreational fishery for pinto abalone in 1994, continued declines in Washington pinto abalone populations prompted WDFW and the University of Washington to initiate pinto abalone restoration efforts in 2002. Restoration focused on development of a captive breeding program, refining hatchery propagation techniques and conducting field experiments with juvenile outplanting. A hatchery breeding program was established at the NOAA Mukilteo research station, utilizing the on-going support of NOAA for both the facility and facility maintenance personnel. In 2003, the Puget Sound Restoration Fund (PSRF) joined the abalone recovery team and has subsequently launched an outreach program and leveraged funds to develop a new hatchery facility at the Kenneth K. Chew Center for Shellfish Research and Restoration. The abalone recovery team has included a suite of additional private, non-profit, tribal and academic partners including (alphabetically): Baywater, Inc., Jamestown S'Klallam Tribe, NOAA, Northwest Straits Commission / Skagit County Marine Resources Committee, Shannon Point Marine Center/ Western Washington University, SeaDoc Society, Suquamish Tribe, Taylor Shellfish, and the Washington Department of Natural Resources.
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