Zróżnicowanie kości penalnej os penis u ssaków - filogeneza i ekologia
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Date
2009
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Polskie Towarzystwo Przyrodników im. Kopernika
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Variability of the mammalian os penis – phylogenesis and ecology
Abstract
The penis bone (also called as baculum or os penis)
is a heterotopic bone occurring in such orders
like: carnivores, bats, insectivores, rodents and some
primates. Baculum is extremely morphologically diverse
both in shape and size, even between closely
related species. Hence it has been widely used as a
systematic tool. Consequently, os penis serves different
functions across the species: e.g. stimulation of
reproductive track, mechanical support, protection
of the urethra from compression. Some analysis suggest
also, that hooked tip of the penis bone can be
used to damage and remove sperm which comes
from the previous male. It can be also used as an
indicator of genetic quality in males because it continues
growth throughout life. Numerous researches
into baculum provide some information about
animal evolution, sexual selection and reproductive
strategies in the different groups of animal. However,
our knowledge about evolution, significance and
environmental influence on the os penis seems to
be incomplete and needs to be further studied.
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Kosmos: Problemy Nauk Biologicznych, Polskie Towarzystwo Przyrodników im. Kopernika. Tom 58, Numer 1-2 (282-283), 2009, s. 179-185.
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ISBN
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00023-4249