In Tierra del Fuego alone, at least 5 to 30 dolphins die each year as by-catch in nets set perpendicular to the shore.Near Kerguelen Island, low levels of chlorinated hydrocarbons (DDT, PCB and HCB) were found in the blubber of Commerson's dolphins, confirming the presence of pollutants in oceans far from their main source. Commerson's dolphins are considered playful swimmers. This is the world's largest ocean, covering about 28% of the world's surface.Referring to an animal that lives on or near the bottom of a body of water. Commerson's dolphin. They’re believed to live to about 10 years of age in the wild.Because Commerson’s Dolphins are so elusive it’s been extremely difficult to get a population count. Predators. One group in captivity was controlled by a dominant male, and other less aggressive males often resided in an adjacent pool.

A database of vertebrate longevity records and their relation to other life-history traits.The Animal Diversity Web team is excited to announce ADW Pocket Guides!To cite this page:

The throat is generally white, as is the rest of the body. Weaning takes about 9 months.Data is thin on Commerson’s Dolphins lifespans, but the oldest known example (in an aquarium) died at 18 years of age. Most sightings occur in the coastal regions near the mouths of bays and estuaries or over the wide shallow continental shelf where the tidal range is great. Pp. 2010. 241-267 in S Ridgway, R Harrison, eds.Goodall, R., A. Galeazzi, S. Leatherwood, K. Miller, I. Cameron, R. Kastelein, A. Sobral. Commerson's dolphins can also be found in aquariums in Germany, Japan and the United States.Commerson's dolphins may affect fishermen, as they sometimes become entangled in fishing nets and may also deplete populations of small fish.Commerson's dolphins were hunted for their meat and oil and more recently for crab bait.

In females the narrow end is anterior, and may or may not include "ears" outside the mammary slits. So are we! These colors are more muted in coastal waters. at,2010. Also an aquatic biome consisting of the ocean bottom below the pelagic and coastal zones. at.Bastida, R., V. Lechtschein, R. Goodall. Individuals from the the south Atlantic Ocean, however, tend to reach sexual maturity at a younger age than populations from Kerguelen.Mother Commerson's dolphins nurse their calves through abdominal mammary slits for about 9 months. Commerson's dolphins prey on small fish, mysid shrimp, as well as squid, octopus, marine worms, and tunicates. Their head is blunt and has a sloped forehead and little or no beak. Females also appear defensive of their young.Commerson's dolphins generally do not live more than 10 years in the wild. The levels of contaminants were 10 to 100 times that of cetaceans in the North Atlantic.Lindsay Peterson (author), San Diego Mesa College, Antonina Salemi (author), San Diego Mesa College, Paul Detwiler (editor), San Diego Mesa College, Tanya Dewey (editor), University of Michigan-Ann Arbor, Gail McCormick (editor), Animal Diversity Web Staff.the body of water between Africa, Europe, the southern ocean (above 60 degrees south latitude), and the western hemisphere. March 15, 2010 They will use echolocation to locate their prey, sometimes swimming upside down for better visual tracking. This black and white pattern varies with geographic location as well as age and sex. 2. Commersons’ Dolphins are prey for Leopard Seals, Sharks, and Orcas. In Kerguelen, they are most commonly observed over the Kerguelen shelf, but they are also found in open waters, kelp-ringed coastlines, and protected areas between islets.Commerson's dolphins are mostly white and have black marked faces and bodies.

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