2 resultados para Mark Shorter

em Brock University, Canada


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Matings systems using signals for sexual communication have been studied extensively and results commonly suggest that females use these signals for locating males, species-identification, and mate choice. Although numerous mating systems employ multiple signals, research has generally focused on long-range signals perhaps due to their prominence and ease of study. This study focused on the short-range acoustic courtship song of crickets. The results presented here suggest this signal is under selection by female choice. Females mated preferentially with males having shorter silences between the two types of ticks within the song. The length of these silences (Gap 1) was correlated with male condition such that males having long silences were significantly lower in mass with respect to body size when compared to males having short silences. Both Gap 1 length and male condition were significantly repeatable within males over time suggesting the possibility these traits have a genetic basis. This study is the first empirical study to test female preferences within the natural variation of the courtship song. It now appears, at least in crickets, that both the longand short-range signals of a multi-signal mating system may contribute to male mating success.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

A musical program for a concert at Music Hall Niagara for the St. Marks' Church organ fund. The program consists of 27 numbers from Schiller's "Song of the Bell. The event is dated Thursday, April 17th, 1884 and admission is 25 cents, 15 cents for children.