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Florida Museum of Natural History Ichthyology Department   (Site not responding. Last check: 2007-10-20) The bonnethead is limited to warm waters of the Northern Hemisphere, ranging in the Atlantic Ocean from New England (U.S.) (rare) south to the Gulf of Mexico and Brazil. Female bonnetheads produce eggs that are maintained and nourished by a yolk-sac during the initial phase of gestation. Bonnetheads are a common inshore shark and are often taken by small fisheries with shrimp trawls, nets, longlines, and hook-and-line. www.flmnh.ufl.edu /fish/Gallery/Descript/Bonnethead/Bonnethead.html   (1641 words)

Atlantic sharpnose sharks   (Site not responding. Last check: 2007-10-20) Bonnethead sharks: Bonnethead sharks are small, common hammerhead-like sharks with smooth, rounded heads. Bonnethead sharks are found in the western Atlantic and eastern Pacific Oceans, in the surf zone, reefs, on sandy bottoms and in estuaries. Large schools of bonnethead sharks migrate to warmer water in the winter and cooler water in the summer. www.sctraveler.com /atlantic_sharpnose_sharks.htm   (293 words)

National Aquarium in Baltimore - Bonnethead shark These grooves are absent in the bonnethead, whose nostrils are located close to the eyes, near the ends of the flattened spade-shaped head. This is the second smallest shark in the hammerhead family, averaging 30 to 48 inches (80 to 120 cm), with a maximum reported total length of 59 inches (150 cm). The bonnethead shark is found in tropical and subtropical waters on both sides of North America: from North Carolina to southern Brazil, including the Caribbean and the Gulf of Mexico, and from southern California www.aqua.org /animals_bonnethead.html   (308 words)

Bonnethead shark - Discover The Outdoors   (Site not responding. Last check: 2007-10-20) Bonnethead sharks are the smallest constituent of the hammerhead family of sharks and, as such, have eyes located at the far ends of extended lobes of the head, which is characteristic of this group. Limited to the warm, subtropical waters of the Western Hemisphere, bonnethead sharks are typically found between 41 degrees north and 34 degrees south latitude, in the western Atlantic and eastern Pacific Oceans. Bonnetheads seldom travel alone and are usually found in small schools of 5 to 15 members. www.dto.com /swfishing/species/speciesnostate.jsp?speciesid=424   (952 words)

SCS text only The bonnethead was also consistently the second-most caught species, with the importance of the flnose and finetooth sharks alternating throughout the time series of catches. For bonnethead, three of the five series exhibited negative slopes, one of which (the Oregon II series) was very highly significant and had the steepest slope (13%) of any of the 41 series examined. The posterior of K for the bonnethead and flnose shark is more normal (Figures 19 and 21), whereas the posterior of K for the finetooth shark is skewed to the right, suggesting that the lower bound of K has more influence on the posterior than the upper bound (Figure 23). www.nmfs.noaa.gov /sfa/hms/SCS_assesstxt.htm   (17484 words)

South Carolina Saltwater Fishing Bonnethead sharks are abundant and widespread in the state's inshore waters, but rarely anyone fishes for them, and when an angler does accidentally land one, they often incorrectly call it a hammerhead shark. The shape of the bonnethead's head is rounded, almost half-moon or shovel-like, and the projections out of the sides of the head are not nearly as prominent. Bonnetheads patrol the edge of the marsh grass for crabs during the summer months, using their keen sense of smell as radar. home.att.net /~rlhiott/scgame_fish2003.htm   (2450 words)

bonnethead shark   (Site not responding. Last check: 2007-10-20) Bonnethead shark, Bonnethead sharks, Shovelhead shark, Shovelhead sharks hammerhead sharks, K-12... Bonnethead Shark Sphyrna tiburo The Bonnethead shark is an active tropical shark that lives primarily... Bonnethead Shark Bonnethead shark (Sphyrna tiburo) is the smallest of the hammerhead family, commonly 3 to 4... www.floridakeysphotos.com /picpage-bonnethead-shark.htm   (265 words)

Mote Marine Laboratory - Magazine Articles A funny thing happened on the way to concluding that most female bonnethead sharks produce litters of young that were fertilized by multiple males: 81 percent of the females sampled as part of a recent study had pups fathered by only one male. The bonnethead was chosen as a test species to help scientists understand the mating systems of similar sharks because they live in estuarine habitats and are more easily observed than other sharks. Another interesting twist in the study, which will be the basis for future research, was that smaller bonnethead females were genetically monogamous, meaning that their eggs were fertilized by a single male, and that larger females had their eggs fertilized by more than one male, usually two. www.mote.org /index.php?src=directory&srctype=display&view=magazine&id=95&FREEDOMSITE=11ff3a7cbb511e407647c8459970da49   (697 words)

Common Sharks of Florida Along with the bonnethead, it is the most common shark caught by Florida anglers. It is often confused with the much less abundant but larger great hammerhead and can be distinguished from the great hammerhead by the curved backside of its head, which differs from the straight edge found on the great hammerhead. Bonnethead shark (Sphyrna tiburo) is the smallest of the hammerhead family, commonly 3 to 4 feet in length. edis.ifas.ufl.edu /SG062   (1174 words)

Sphyrna tiburo ADW: Sphyrna tiburo: Classification: Sphyrna tiburo (bonnethead and bonnethead shark). Physiological and behavioral responses to hypoxia in the bonnethead shark, sphyrna tiburo. Sphyrna tiburo, Bonnethead shark, 3.90, 5, BFA, RBC, SP. www.specieslist.com /endangered/scientific_name/S/Sphyrna_tiburo.shtml   (3006 words)

Bonnethead Shark During the summer it is common in the inshore waters of the Carolinas and Georgia; in spring, summer, and fall, it is found off Florida and in the Gulf of Mexico. Behavior: The bonnethead is an active tropical shark that swims in small groups of 5-15 individuals, but sometimes migrating schools of hundreds and even thousands of these sharks have been reported. Reproduction: The bonnethead is viviparous–which means females produce eggs that are retained and nourished in the reproductive system until the young are mature enough to be released to the outside. www.colszoo.org /animalareas/shores/bonnetsh.html   (491 words)

BONNETHEAD SHARK - Enchanted Learning Software The average Bonnethead shark (also known as the Shovelhead shark) is a small, common hammerhead shark with a smooth, rounded head. The average Bonnethead shark has small, sharp teeth in the front of the mouth (for grabbing soft prey) and flat, broad molars in the back (for crushing hard-shelled prey). Bonnetheads are found in the western Atlantic and eastern Pacific Oceans, in the surf zone, reefs, on sandy bottoms and in estuaries. www.enchantedlearning.com /subjects/sharks/species/Bonnethead.shtml   (270 words)

US zoo investigates ‘virgin‘ shark birth The trio of female bonnethead sharks living in a tank at Henry Doorly Zoo in Omaha,,have never been even close to a male bonnethead shark since they arrived as 2 to 3-pound (1 to 1.4 kg) pups", zoo director Lee Simmons said. There is a male epaulet shark in the same tank, but it is a different species than the bonnethead, which is a smaller version of the hammerhead shark, and would correspond to,,a Chihuahua impregnating a Saint Bernard", Simmons said. DNA tests were begun this week on tissue and blood samples taken from the 3-year-old female bonnetheads and the pup, which died five hours after it was born on Dec. 14 after being bitten by a stingray that lives in the same tank. scholieren.nrc.nl /extra/engels/2002/033.shtml   (225 words)

Animal Bio - Bonnethead Shark   (Site not responding. Last check: 2007-10-20) Bonnetheads have to swim continuously to push oxygen-containing water past their gills. With numerous rows of teeth attached to the skin of their jaws, they have a seemingly limitless supply of canines to replace those that are lost. Bonnetheads have developed acute sensory and nervous systems to ensure a healthy diet of crustaceans, fishes and mollusks. www.sheddaquarium.org /ani_bios_43.html   (334 words)

SurfWax: News, Reviews and Articles On Bonnethead Shark Bonnethead shark, fltip shark, whiting, pompano, flounder and gag grouper are being caught at the Saprito Pier, according to Dennis Hart of Hart's Landing. I had the honor of this fight and before long, a small bonnethead shark was at boatside. 10Blacktip shark, bonnethead shark, fl drum, tarpon, snook, redfish, silver trout and mangrove snapper are being caught at the 41 bridges. news.surfwax.com /pets/files/Bonnethead_Shark.html   (298 words)

Bonnethead Shark, Sphyrna tiburo @ MarineBio.org The Bonnethead shark, Sphyrna tiburo, aka Shovelhead, is well-known for its characteristic semicircular head. The Bonnethead shark, Sphyrna tiburo, is found in subtropical waters 41°N-34°S in the western Atlantic from North Carolina, USA to southern Brazil, in the Caribbean including Cuba and the Bahamas, and in the Gulf of Mexico. The Bonnethead shark, Sphyrna tiburo, is viviparous, meaning the embryos receives nourishment from the female while developing within her body. www.marinebio.org /species.asp?id=373   (763 words)

DiveNews.Com   (Site not responding. Last check: 2007-10-20) When the bonnethead shark was born at the Henry Doorly Zoo in Omaha, Nebraska, there seemed to have been a link missing - a male shark. The bonnethead offspring died within five hours of birth. Veterinarians conducted DNA tests on all the bonnethead sharks in the tank Thursday. www.divenews.com /print.php?sid=86   (246 words)

Bonnethead shark - 10 Deadliest Sharks in the World Bonnethead sharks are becoming a very popular species for inshore anglers Current regulations stipulate you can keep one bonnethead shark per boat per Bonnethead SharkBONNETHEAD SHARK Similar Fish: Dusky shark, Carcharhinus obscurus; bull shark, Carcharhinus leucas. The bonnethead shark and bamboo shark are from different families; the bonnethead suspected of a virgin birth gave birth to a live pup, rather than laying blind-eyes.quicksearchall.com /pqsa/blind-eyes-bonnethead-shark.html   (244 words)

Bonnethead shark While you may encounter quite of few different species of shark while fishing the Big Bend waters, the Bonnethead is the one you will most likely catch inshore. The Bonnethead shark is like a miniature Hammerhead. The ones I have caught seldom exceed 2 to 3' in length. www.bigbendsportsman.com /tactics/bonnethead_shark.htm   (223 words)

Bonnethead shark - Description Bonnethead- Sphyrno tiburo One of 3 lady bonnethead sharks, bunkmates (sans male bonnethead) since infancy, gave birth to a healthy pup over the holidays. Age and growth of the bonnethead shark, Sphyrna tiburo, from northwest Florida, with comments on clinal variation. Bonnethead shark dentition, A.Fourth upper tooth, B. Tenth upper tooth, As with all sharks, the bonnethead has additional rows of teeth that are used as atp-tennis.findnice.net /fdn/atp-tennis-bonnethead-shark.htm   (200 words)

Editors Note   (Site not responding. Last check: 2007-10-20) Before the new state regulations, one bonnethead was allowed per boat, but it had to be 54 inches fork length (from the tip of its head to the fork in its tail) to be retained. DNR's tagging studies also found that bonnethead sharks often go south to Florida in the winter, but in most cases return the following summer to the estuary in South Carolina where they were originally tagged. In South Carolina waters, bonnetheads are often seen cruising along oyster banks where they feed almost exclusively on blue crabs. www.sctraveler.com /sharks.htm   (677 words)

Bonnethead - Comparative demography of two populations of the bonnethead shark   (Site not responding. Last check: 2007-10-20) Bonnethead - Comparative demography of two populations of the bonnethead shark The Bonnethead shark is an active tropical shark that lives primarily off the The Bonnethead is related to the Hammerhead shark, but only grows to an Family Sphyrnidae (bonnethead sharks, hammerhead sharks, and scoophead sharks). wvdial.seekingforyou.com /psfy/wvdial-bonnethead.html   (201 words)

FarShores News Story: Mysterious 'Virgin' Birth In Omaha The trio of female bonnethead sharks living in a tank at Henry Doorly Zoo in Omaha “have never been even close to a male bonnethead shark since they arrived as two to three-pound (1 to 1.4 kg.) pups,” zoo director Lee Simmons said. There is a male epaulet shark in the same tank, but it is a different species than the bonnethead, which is a smaller version of the hammerhead shark. DNA tests were begun this week on tissue and blood samples taken from the three-year-old female bonnetheads and the pup, which died five hours after it was born on Dec. 14 after being bitten by a stingray that lives in the same tank. www.100megsfree4.com /farshores/nbirth.htm   (249 words)

Florida Museum of Natural History Ichthyology Department   (Site not responding. Last check: 2007-10-20) Overall, results suggested that bonnethead sharks are specialists that undergo dietary shifts depending on season and habitat. Z was estimated through four methods for bonnethead sharks from Tampa Bay and through two methods for sharks from Florida Bay. The life-history tables constructed for bonnethead sharks in Tampa Bay yielded net reproductive rates (Ro) ranging from 1.18 to 5.22, generation lengths (G) varying from 3.8 to 5.0 years, and corrected instantaneous rates of population increase (r) ranging from 0.043 to 0.390. www.flmnh.ufl.edu /fish/Organizations/aes/abst94a.htm   (3341 words)

Bonnethead shark - Jungle Mouse - Bonnethead Shark   (Site not responding. Last check: 2007-10-20) ALL WATERLIFE TAXIDERMY Taxidermy Shark Mount BONNETHEAD SHARK. Bonnethead sharks were the second most abundant species found in Georgia waters. Bonnetheads were also collected during all sampling months and in all three www.searchforfind.com /sff/bonnethead-shark.html   (228 words)

ScienceNow: Who's Your Daddy   (Site not responding. Last check: 2007-10-20) Despite being one of the best studied sharks, researchers knew little about the mating system of the bonnethead shark (Sphyrna tiburo), a small hammerhead shark common in subtropical and tropical waters of the western Atlantic. They expected to find that each litter had multiple fathers, because bonnetheads are highly social and females can store sperm; traits that favor promiscuity in other vertebrates. After identifying paternal DNA in 22 bonnethead litters caught off the Florida Gulf coast, they were surprised to find that 80% of litters had just one father. www.nova.edu /ocean/whosyourdaddy.html   (359 words)

CharlestonFishing.Com - bonnethead sharks Caught 7 bonnethead sharks and broke off several more. Apparently they changed it because the DNR biologists found a very healthy stock of bonnetheads but had never encountered one at 54". It is official but somehow people keep getting confused...could be because some of the DNR guys haven't learned the new regs. www.charlestonfishing.com /forum/topic.asp?TOPIC_ID=11653   (305 words)

DiveNews.Com Mote Marine Laboratory is conducting a study of fltip and bonnethead sharks in Pine Island Sound. The sharks have a yellow tag on the left side of their dorsal fins and fl stitches on their undersides, where acoustic transmitters have been implanted. The transmitters have a battery life of 18 months to two years, so Heupel, who will put transmitters in 20 more bonnetheads in July, can monitor how the sharks move around during their first summer and whether females return to the same estuary where they were born. www.divenews.com /print.php?sid=717   (475 words)

Key West current fishing report - Flats & deep sea fishing - Key West, FL Bonnethead sharks look like the son of the hammerhead shark. Bonnethead flies are popular in rust and gray with small dumbbell eyes. There are a few different types of shark such as lemon, bonnethead, spinner, fltip and bull sharks that are seen on the flats searching for their next meal. www.tarponfishingkeywest.com /key_west_shark.htm   (325 words)

Origin and Evolution of the "Hammer" It was further surmised that the hammer had evolved gradually, expanding sideways bit-by-bit over millions of years. Therefore, it was deduced that the Bonnethead Shark is the most ancestral species, the Winghead the most derived, and the other hammerheads somewhere in between. The molecular data strongly suggest that the Winghead Shark - not the Bonnethead - was the first hammerhead to diverge from the group's common ancestor and that the bonnethead was, in fact, the most recent hammerhead to appear. www.elasmo-research.org /education/topics/d_hh_origin.htm   (666 words)

[No title]   (Site not responding. Last check: 2007-10-20) Also, the minimum size limit of 54 inches for bonnethead sharks has been eliminated. Ulrich's studies haven't found a bonnethead that reaches 54 inches in length, so essentially no one was allowed to keep any of these sharks. The commonly seen Atlantic sharpnose sharks and bonnethead sharks are in the group called "small coastal" sharks. www.dnr.state.sc.us /cec/news/apr1403.txt   (4289 words)

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