Host‐related life history traits in interspecific hybrids of cactophilicDrosophila

• DOI: 10.1111/j.1570-7458.2007.00631.x
• Publication Date: 2007-11-17T07:44:24Z
• Authors: E. M. Soto; I. M. Soto; V. P. Carreira; J. J. Fanara; E. Hasson
• Keywords: Introgression

Abstract In the genus Drosophila (Diptera: Drosophilidae), interspecific hybridization is a rare phenomenon. However, recent evidence suggests certain degree of introgression between cactophilic siblings buzzatii Patterson & Wheeler and koepferae Fontdevila Wasserman. this article, we analyzed larval viability developmental time hybrids males D. females , raised in media prepared with fermenting tissues natural host plants that these species utilize nature as breeding sites. all cases, was not significantly different from parental lines and, depending on cross, developed faster than both or slowest species. When data wing length were included discriminant function analysis, observed can be clearly differentiated, while fell two categories, one intermediate other consisting extreme phenotypes. Thus, our results point out hybrid fitness, measured by viability, lower