by H.M.S.O .
Written in English
|Series||Falkland Islands Dependencies Survey. Scientific reports series; no.2|
|The Physical Object|
|Number of Pages||31|
A new method of age determination in mammals with special reference to the Elephant Seal (Mirounga leonina, Linn.)Author: R.M. Laws. While working on the elephant seal (Mirounga leonina) in , a new and accurate method of determining age, depending upon cyclical variation in the rate and manner of calcification of the teeth, was developed. This makes possible determination of age, to within a month, up to at least twenty years in the male, and thirteen years in the female. Conventional methods of mammalian age determination based upon the study of continuous processes such as increases in body dimensions or weight, fusion of epiphyses, increases in dry weight of the eye lens, or teeth wearing processes; or determination based upon periosteal growth lines (Morris, Morris,, Reeve. A new method of age determination for mammals with special reference to the elephant seal, Mirounga leonina by:
AGE DETERMINATION IN THE HAWAIIAN MONK SEAL The Hawaiian monk seal (Monachus schauinslandi) is scarce. Its range is limited to a few islands in the Leeward Hawaiian group. Few specimens have been collected. Life history observations have recently been published (Kenyon and Rice, ; Rice, ) but much is still to be learned of its biology. R.M. LawsA new method of age determination in mammals with special reference to the elephant seal (Mirounga leonina Linn.) F.I.D.S. Sci. Rep., 2 (), pp. Google ScholarCited by: A new method of age determination in mammals with special reference to the elephant seal (Mirounga leonina). Falkland Isl. Depend. Surv. Rep., 2: (Phoca vitulina) and the grey seal (Halichoerus grypus) to phocine distemper virus as a measure by a canine distemper virus neutralisation test. Sci. Total Environ., (), pp. Cited by: According to Lever's book on naturalized mammals the highest number of mammal species has been introduced to _____. New Zealand Zebra Mussels may concentrate toxins in their tissues that ultimately poison certain species of ________.
In the book a reader will find principal methods of age determination of mammals allowing to estimate the age of an animal with necessary precision using the most simple appropriate method. Elephant seals, weighing up to kilograms, are not only the largest seals but among the most impressive of all marine mammals. Brought to the brink of extinction by nineteenth-century hunters, the northern species has achieved a recovery that is unmatched by any other marine vertebrate. Elephant seals are capable of tolerating remarkable physiological extremes of . Full text of "Mammalian anatomy: with special reference to the cat" See other formats. The Natural History of the Bottlenose Whale, Hyperoodon ampullatus (Forster) Abstract. Two species of bottlenose whales, Hyperoodon, have been recognized, namely H. ampullatus in the North Atlantic and H. planifrons in the southern hemisphere (Rice and Scheffer, ).Cited by: