Data for the marine iguana on to islands in the Galapagos Archipelago is presented
here. The black asterisks denote maximum body size maintained during 2 specific
reproductive years (91/92 and92/93). Larger iguanas can harvest more algae but
expend more energy on metabolism. Which of the following statements would be
considered appropriate for the information provided?
Sexual selection by females results in the largest males reaching sizes above
optimal survival.
The largest males tend to be much larger than their optimal size.
The maximum size at which iguanas could maintain their weight correlates with
the optimal size for survival.
Optimal size for survival is roughly the same in males and females.
Males tend to be larger, on average, than females.
