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Topic: Porbeagle

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	Porbeagle Shark
		The porbeagle is a stout shark that is blue-gray on top and white underneath with a white patch on the trailing edge of the first dorsal fin.
		The porbeagle shark is common in pelagic and littoral zones, and inhabits water down to a depth of 370 meters (1,120 feet).
		Porbeagles occur on both sides of the Atlantic, and in the south Pacific and Indian Oceans.
	new-brunswick.net /new-brunswick/sharks/species/porbeagle.html (434 words)

	The reproductive biology of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean. - HighBeam ...
		The porbeagle (Lamna nasus), a pelagic shark in the family Lamnidae, inhabits the cold temperate waters of the North and South Atlantic, South Pacific, and southern Indian Oceans, as well as the subantarctic region of the Southern Ocean (Svetlov, 1978; Compagno, 1984).
		Porbeagles were collected with pelagic longline onboard both U.S. and Canadian commercial fishing vessels and U.S. research vessels fishing in U.S. and Canadian waters from the Gulf of Maine and Georges Bank (northeastern U.S.) to the Grand Banks off southern Newfoundland.
		An analytical assessment of the porbeagle shark (Lamna nasus) population in the Northwest Atlantic.
	www.encyclopedia.com /doc/1G1-95205116.html (5145 words)

	Florida Museum of Natural History Ichthyology Department: Porbeagle (Site not responding. Last check: )
		In Northern Hemisphere porbeagles, the ventral surface of the head and abdomen are white, with the color extending dorsally to the rear of the pectoral bases.
		Although the porbeagle is related to the much-feared shortfin mako and white shark, it rarely attacks humans.
		Porbeagle stocks in the North Atlantic were seriously depleted due to overfishing in the latter half of the twentieth century.
	www.flmnh.ufl.edu /fish/Gallery/Descript/Porbeagle/Porbeagle.html (1866 words)

	Porbeagle - Wikipedia, the free encyclopedia
		The Porbeagle (Lamna nasus) is a large pelagic predatory shark.
		The Porbeagle's distribution ranges from the northeastern coast of North America, from New Jersey to Greenland and from the northwesten coast of Africa, Morocco or Western Sahara and the Mediterranean, and up to the waters off Iceland to the north coast of Norway and the northwestern coast of Russia.
		The porbeagle is an opportunistic feeder, it eats mostly bony fish like mackerel, herring lancetfish and sauries.
	en.wikipedia.org /wiki/Porbeagle (351 words)

	Porbeagle Shark - Marine Biology: Life in the Ocean - Care2.com
		The porbeagle is a member of the group known as the mackerel sharks--Isuridae or Lamnidae--probably the most notorious of all shark families.
		Porbeagles are pan-oceanic, having been reported in the North Atlantic, the North Sea, off England, Scotland, Iceland, Newfoundland, New England, and from corresponding latitudes in the southern hemisphere.
		The porbeagle is not as deadly as the white or as graceful as the mako, but it is among the fastest swimmers in the sea, and therefore it ranks at the very peak of the food chain.
	www.care2.com /c2c/groups/disc.html?gpp=11767&pst=856141 (881 words)

	Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean. - HighBeam ...
		The porbeagle (Lamna nasus) is a large pelagic shark in the family Lamnidae that occurs in the cold, temperate waters of the North Atlantic, South Atlantic, and South Pacific oceans.
		Accurate age determinations are necessary for both the assessment and management of the porbeagle shark because they form the basis for calculations of growth and mortality rates, age at maturity, age at recruitment, and estimates of longevity.
		In the 1960s, 542 porbeagles were tagged and 53 recaptured as part of a Norwegian study of the unfished population.
	www.encyclopedia.com /doc/1G1-99114598.html (6109 words)

	Animal Portal - Porbeagle Shark
		The porbeagle is a stout shark that is blue-gray on top and white underneath with a white patch on the trailing edge of the first dorsal fin.
		The porbeagle shark is common in pelagic and littoral zones, and inhabits water down to a depth of 370 meters (1,120 feet).
		Porbeagles occur on both sides of the Atlantic, and in the south Pacific and Indian Oceans.
	www.animalport.com /animals/Porbeagle-Shark.html (390 words)

	Porbeagle,Lamna nasus
		The salmon shark differs from the porbeagle in some external characteristics; it lacks the white area on the back of the dorsal, has a shorter snout, and the salmon shark has dark spots all over the white underside including under the pectoral fins.
		The porbeagles were decimated by the Norwegians fishing in the Northwest Atlantic, and Canadian waters during the 1960s.
		Unlike the solitary makos, porbeagles may arrive at the boat in a group of 4 or 5.
	www.newenglandsharks.com /porbeagl.htm (1900 words)

	Capt (Site not responding. Last check: )
		Sexual maturity for the female porbeagle is thought to occur at age fourteen after obtaining a fork length of seven feet and a weight ranging from 270 to 320 pounds.
		Porbeagles prefer deep water but it's common to lure them to the surface as they attempt to snatch a hooked cod.
		Porbeagles are notorious for picking up the bait and then dropping it when the leader or line tension is felt.
	www.bbgfc.com /Porbeagle.htm (3185 words)

	Porbeagle Shark
		Female porbeagles reach sexual maturity at a size of about 217 cm (age of about 13 years), while the males are mature at about 174 cm (age 8).
		The porbeagle shark is the target of a directed fishery in Atlantic Canada, and has been the subject of considerable research in our laboratory.
		The porbeagle is often seen inshore and around mouths of estuaries in Nova Scotia and New Brunswick in late summer.
	www.marinebiodiversity.ca /shark/english/porbeagle.htm (566 words)

	Porbeagle Shark - A World of Sharks
		Porbeagle Sharks are pregnant for 8 month and they give birth to 1-5 young ones that are 23-29 in.
		The reproduction of the Porbeagle Shark is a bit unusual, because the first hatched egg in the uterus eats the other eggs, you can call it a sort of cannibalization.
		The Porbeagle Shark is thought to be dangerous to humans, but because the Porbeagle Shark spends most of its time in deep waters down to 400 yd.
	theshark.dk /en/porbeagle.php (267 words)

	Porbeagle Shark
		Porbeagle populations in the northwest Atlantic and around New Zealand differ substantially in their biological characteristics: New Zealand porbeagles reach a smaller maximum size, mature at a smaller size and greater age, and probably live considerably longer than porbeagles in the northwest Atlantic.
		Our results indicated that porbeagle are most often caught at depths of 35-100 metres at water temperatures of -2 to 15 deg C. The average temperature at the depth of the fishing gear was consistently 7-8 deg C at all times of the year.
		To update and improve the available information on porbeagle, a comprehensive stock assessment was carried out in 2005, concluding that the 2005 female spawner abundance is about 12% to 15% of its 1961 level, although population numbers have remained relatively stable since the reduction of catch quotas in 2002 (Stock Assessment Report 2005).
	www.marinebiodiversity.ca /shark/english/skull1.htm (1809 words)

	Richard Ellis Gallery: Porbeagle Shark
		Porbeagles are pan-oceanic, having been reported in the North Atlantic, the North Sea, off England, Scotland, Iceland, Newfoundland, New England, and from corresponding latitudes in the southern hemisphere.
		The reproduction and parurition of the porbeagle is thought to be similar to that of the mako.
		The porbeagle is not as deadly as the white or as graceful as the mako, but it is among the fastest swimmers in the sea, and therefore it ranks at the very peak of the food chain.
	www.postmodern.com /~fi/sharkpics/ellis/porbeagl.htm (840 words)

	Mako or Porbeagle
		Porbeagle- notice the white patch on back bottom of dorsal, and the teeth are not as pronounced in the lower jaw as the mako's.
		The porbeagle has a ridge a few inches long on both sides of the tail, at the top of the lower tail lobe just below where the flared out body section joins the tail, In many cases the ridge is only a quarter of an inch high.
		characteristic, the porbeagle Lamna nasus, and the salmon shark Lamna ditropis.
	www.newenglandsharks.com /mako-por.htm (1730 words)

	Mackerel shark
		The teeth of the porbeagle are alike in the two jaws, slender, pointed, smooth-edged, and with a sharp denticle near the base on each side (young fish may not have these) which the mako lacks (p.
		Seemingly, the chief centers of population for the porbeagle in the western Atlantic are along outer Nova Scotia, and in the western side of the Gulf of Maine.
		The liver oil of the porbeagle, mixed with other fish oils, was in demand for use in tanning leather during the first quarter of the 19th century.
	www.gma.org /fogm/Lamna_nasus.htm (1991 words)

	Biology of the Porbeagle
		Porbeagles have been reported rolling while swimming along the surface, repeatedly wrapping and unwrapping their snouts and forward portion of their bodies in kelp fronds, which often trail behind the shark like rubbery streamers.
		Soon the Norwegian Porbeagle catch figures off Nova Scotia began to diminish, demonstrating that a shark population could easily be "fished out" in an area where the target species is nonmigratory and has a low reproductive rate.
		Porbeagles may take five or more years to reach sexual maturity and produce small litters of one to five pups (typically four, two per uterus) per year.
	www.elasmo-research.org /education/shark_profiles/l_nasus.htm (1458 words)

	Sea Angling in Ireland - Porbeagle Shark (Site not responding. Last check: )
		Introduction: The Porbeagle Shark is less common in Irish waters than it once was, largely due to commercial pressures.
		Porbeagle Sharks are typically encountered by accident when fishing for Blue Shark.
		Porbeagle sharks have been caught from the shore from a number of marks around Ireland, perhaps the most famous being the Green Island mark in Co. Clare.
	www.sea-angling-ireland.org /shark%20-%20porbeagle.htm (357 words)

	Case studies of the management of elasmobranch fisheries
		The porbeagle shark is a cold-temperate, epipelagic shark found in coastal waters of the North Atlantic, South Atlantic and South Pacific areas (DFO 1996b).
		Porbeagle sharks are taken as a bycatch in the Canadian swordfish longline fishery (DFO 1996b) as well as other fisheries (Table 2).
		Small numbers of porbeagle and shortfin mako have been caught as well in both swordfish longline and harpoon fisheries and were often landed together as mackerel shark.
	www.fao.org /docrep/003/x2097e/X2097E04.htm (12337 words)

	Shark Fisheries
		Porbeagles are usually caught at a depth of 50 to 150 meters using squid as bait.
		Finning, the act of removing the fins and disposing of the carcass at sea, was outlawed in June of 1994.
		As a result of the 2001 porbeagle stock assessment (summarized in the 2001 Stock Status Report), a 2002-2006 management plan was set in place in which the catch quota was reduced to 250 tons per year, of which 200 tons per year is allocated to the directed fishery.
	www.marinebiodiversity.ca /shark/english/fisheries.htm (1236 words)

	Rock n' Reel Sportfishing Shark Charters
		Porbeagle sharks are dark blue gray above with white on their lower sides and underbelly.
		Porbeagle sharks can be distinguished from white and mako sharks by their teeth, which are smooth edged and have a little cusp present along each side of the base of each tooth, and by the presence of two caudal keels on their tail fin.
		Porbeagle sharks are strong, fast swimmers that are capable of rapid acceleration.
	www.rocknreel.org /sharkcharters.htm (829 words)

	Durham captain hauls in a shark (Site not responding. Last check: )
		Porbeagles have an aggressive reputation and would attack a human, Mick said, adding that they have been known to attack boats.
		The largest porbeagle shark on record, according to an old record book, is a 320-pound shark caught in Cornwall, England, Mick said.
		The porbeagle is a flavorful fish, according to Mick, who plans to give shark steak fillets to friends.
	www.seacoastonline.com /1998news/8_3d.htm (264 words)

	Porbeagle Shark Pictures - www.Shark-Pictures.com
		Welcome to the Porbeagle Shark picture gallery, there are currently 6 Porbeagle Shark pictures on this page.
		Once you are viewing a picture, use the thumbnails below it to navigate to other Porbeagle Shark pictures.
		If you have an Porbeagle Shark picture that you would like to contribute to this site please upload it here.
	www.shark-pictures.com /pictures/porbeagle-shark.html (96 words)

	[No title]
		Elsewhere within their range, porbeagle are caught by longlines and sold fresh and salted for food, the liver for oil, and the carcass for fish meal.
		Porbeagle caught incidentally in Canadian waters in weirs or gill nets or on longlines are sometimes shipped to United States markets, where they are used for human food and sold in specialty restaurants as shark, mackerel shark, or mako.
		Porbeagles are thought to reach sexual maturity at about 5 yr or older and to have a life expectancy of about 20-30 yr.
	fwie.fw.vt.edu /WWW/macsis/lists/M010730.htm (841 words)

	Porbeagle Shark Tagging Cruises (Site not responding. Last check: )
		The objectives of the porbeagle tagging cruises were to: 1) tag and inject porbeagle sharks with oxytetracycline (OTC) for migration and age and growth studies; 2) collect morphometric data; and 3) collect biological samples for age and growth, food habits, and reproductive studies.
		Additionally, samples of spiral valves were taken from five porbeagles of varying sizes for parasite research, and samples of liver and muscle were taken for DNA studies.
		Of these, 388 were tagged (384 blues, 93 porbeagles), four (porbeagles) were dissected, and 91 sharks were lost or released at the rail (this included 50 spiny dogfish released without tags).
	na.nefsc.noaa.gov /sharks/newsletter/97/porbeaglecruise.html (497 words)

	Porbeagle, Lamna nasus (Site not responding. Last check: )
		An active epipelagic species inhabiting boreal and temperate waters where sea-temperatures are under 18ûC, the porbeagle ranges both close inshore (especialy in high summer) and far offshore, where it principally occurs in close association to submerged banks and reefs.
		Fishermen report this species to have a propensity towards interacting with floating objects, such as cork floats or soft drinks cans; it is thus perhaps unsurprising that these sharks will opportunistically bite or ingest resting seabirds (as will blue sharks).
		Porbeagles are ovoviviparous with litters of 1 to 5 young; gestation period possibly 8 months but data limited; females mature at 152 to 219cm and males from 219 - 262cm.
	www.zoo.co.uk /~z9015043/porbeagle.html (595 words)

	NR-MAR-99-40E (Site not responding. Last check: )
		Sharks are fished worldwide for food and sport, but drastic declines in their numbers in other countries have made it clear that they can't sustain the type of fishing pressure that is commonly found in fisheries such as for groundfish.
		With this in mind, fisheries scientists at BIO were concerned that the burgeoning fishery for the very-tasty porbeagle shark might result in stock collapse.
		A new porbeagle management plan is now being developed which will allow the health of the population to improve while it is being fished.
	www.mar.dfo-mpo.gc.ca /communications/maritimes/news99e/m99040.htm (803 words)

	IUCN Red List of Threatened Species: Lamna nasus
		According to the Canadian Department of Fisheries and Oceans (DFO 2001a), mature porbeagle sharks are rarely seen in winter and spring, with monthly catches exhibiting a seasonal and sex-specific migration of mature sharks towards the southern Newfoundland mating grounds in spring.
		Biomass of the Northwest Atlantic porbeagle population was estimated at 4,409 t (11% of virgin biomass) and female spawners estimated at 6,075 (10% of the virgin abundance) (Campana et al.
		Bonfil (1994) estimated that 50 t of porbeagle were taken as a supplementary catch in the Spanish longline swordfish fishery in the Mediterranean and Atlantic during 1989.
	www.redlist.org /search/details.php?species=11200 (6048 words)

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