File:The biology of the amphibia (1931) (20373695112).jpg

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Title: The biology of the amphibia
Identifier: biologyofamphibi00nobl (find matches)
Year: 1931 (1930s)
Authors: Noble, Gladwyn Kingsley, 1894-1940
Subjects: Amphibians
Publisher: New York : McGraw-Hill
Contributing Library: ASC - York University Libraries
Digitizing Sponsor: York University - University of Toronto Libraries

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SEX AND SECONDARY SEX CHARACTERS 119 members of a different although ancestral family. Turning to the Salientia, many cases of glandular hypertrophies are found in the male sex but none is known to play any part in attracting the female. All species of Cycloramphus (Fig. 42B) have gland- ular pads in the inguinal region, and similar but more extensive glands appear on the sides of the body of Hyla rosenbergi. Pelo- bates has a pad of glandular tissue on the outer side of the upper arm where it could not function in the embrace, and a similar pad crops up in many species of Rana (the Hylorana group). In the African tree frogs, Leptopelis rufus and L, aubryi, sl pair of
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Fig. 42.—Hypertrophied glands as secondary sex characters. The glandular mass at the tail base of the male Eurycea multiplicata (C) is employed to attract the female. The functional significance of the hypertrophied glands on the thighs of the male Mantidactylus luteolus (A), viewed ventrally, and in the inguinal region of the male Cycloramphus asper (B) is at present unknown. glandular patches appears on the chest of the male and would be assumed to function in holding the female. But in various pelobatids (Scaphiopus, Cophophryne, and some Megalophrys), a similar pair of pads appears in both sexes. Perhaps this is another instance of the inheritance of male characters by the female, but the Pelobatidae are far more primitive than the polypedatid tree frogs and hence presumably represent the primitive condi-

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  • bookid:biologyofamphibi00nobl
  • bookyear:1931
  • bookdecade:1930
  • bookcentury:1900
  • bookauthor:Noble_Gladwyn_Kingsley_1894_1940
  • booksubject:Amphibians
  • bookpublisher:New_York_McGraw_Hill
  • bookcontributor:ASC_York_University_Libraries
  • booksponsor:York_University_University_of_Toronto_Libraries
  • bookleafnumber:137
  • bookcollection:YorkUniversity
  • bookcollection:ontario_council_university_libraries
  • bookcollection:toronto
  • BHL Collection
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7 August 2015
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This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

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