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... Science Frontiers ONLINE No. 82: Jul-Aug 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects For some, sex = death It has long been known that the males of some species of marsupial mice mate in their first year and then die off completely, leaving the perpetuation of their species to their male progeny. Females of these species usually survive to breed a second and even third year. The poor males, however, succumb due to "elevated levels of free corticosteroids in the blood and associated disease such as hemorrhagic ulceration of the gastric mucosa, anemia, and parasite infestation." In short, they seem programmed to die after mating, like the male octopus. And one wonders why evolution has wrought this mass die- ... . In their studies of marsupial mice, C.R . Dickman and R.W . Braithwaite have extended the phenomenon to two new genera: Dasyurus and Parantechinus . They have also found that the phenomenon is a bit more complex. First, in P . apicalis, the male die-off occurs in some populations and not others. In D. hallucatus , the die-off may occur in the same population in some years and not others. Furthermore, the females of this species may on occasion all die off, too -- but after giving birth, of course. (Dickman, C.R ., and Braithwaite, R.W .; "Postmating Mortality of Males in the Dasyurid Marsupials, Dasyurus and Parantechinus ," Journal of Mammalogy , 73:143 ...
Terms matched: 2 - Score: 305 - 15 May 2017 - URL: /sf082/sf082b08.htm
... Science Frontiers ONLINE No. 101: Sep-Oct 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Male Dolphin Kills Man Male dolphins definitely prefer human females. In fact, a recent incident at a Sao Paulo, Brazil, beach reveals an antagonism toward human males. A wild, resident male dolphin, noted for his friendliness toward women swimmers, attacked two human males, who were evidently considered to be romantic competitors. One of the men died from internal hemorrhaging after being butted by the dolphin. The other man received a broken rib. (Anonymous; "Dolphin Prefers Women, Kills Male Playmate," Washington Times, December 11, 1994. Cr. S. Parker. COUDI item. COUDI = Collectors of Unusual DataInternational. ... Comment. Obviously, dolphins are not always as friendly as Flipper. In fact, a recent TV documentary related how a female snorkeler was seized (gently) by a male false killer whale (a type of dolphin) and dragged down 100 feet before being released unhurt though nearly drowned. For additional discussions of the humananimal interface, see Biological Anomalies: Humans III. To order, see: here . From Science Frontiers #101 Sep-Oct 1995 . 1995-2000 William R. Corliss ...
Terms matched: 2 - Score: 304 - 15 May 2017 - URL: /sf101/sf101b07.htm
... be due to seasonal fluctuations, misreporting on the death certificate, deferment of life-threatening surgery, or behavioral changes associated with the birthday. At present, the best available explanation of these findings is that females are able to prolong life briefly until they have reached a positive, symbolically meaningful occasion. Thus the birthday seems to function as a 'lifeline' for some females. In contrast, male mortality peaks shortly before the birthday, suggesting that the birthday functions as a 'deadline' for males." (Phillips. David P., et al; "The Birthday: Lifeline or Deadline?" Psychosomatic Medicine, 54:532, 1992.) From Science Frontiers #89, SEP-OCT 1993 . 1993-2000 William R. Corliss ...
Terms matched: 2 - Score: 203 - 15 May 2017 - URL: /sf089/sf089p14.htm
