The number of copulations of territorial males of the butterfly, Callophrys xami (Lycaenidae)

  • Cordero C
  • Macías R
  • Jiménez G
  • 23

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Abstract

The number of copulations by different males and in different territories was evaluated in the field in the butterfly Callophrys xami (Lycaenidae). The total number of copulations per male and per hour was very low (.0027 and .0029 copulations / male / h in 1989 and 1990, respectively). There was high variance among males in the number of copulations. Data from the few males observed copulating more than once suggests a mating advantage for big, long lived males. Variation among territories in the number of resident males, frequency of occupation and number of copulations suggests variation in territory quality. Frequency of occupation was not correlated with the territory variables measured, and there were no differences in any territory variable between territories in which copulations were observed and those in which no copulation was observed. Furthermore, there were no between-years correlations in frequency of occupation and number of copulations in the territories studied in two different years. The location of territories may be important in determining territory quality.

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Authors

  • C Cordero

  • R Macías

  • G Jiménez

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