Data concerning crossing dates and number of offspring used to assess sex ratio. Data are in 7 columns: 1. cross number: in the form "BB.BB1" Letters represent species ( B=P. campbelli, S=P. sungorus
Individuals in species with long-term social monogamy often incur fitness costs after mate change. We evaluated the relative contributions of mate familiarity and male breeding experience to the cost
Abstract The reproductive aspects of populations are important determinants of their ability to maintain themselves throughout time. In the case of amphipods from the genus Hyalella Smith, 1874, the r