2011a), female remating has been measured within 1 to 3 d of the initial
mating, even though females of some species may live for several wk or even mo (e.g., Dhillon et al.
Combination of phylogenetic analysis and
mating tests indicated that the
mating compatibility of P.
Mating and behavior observations were made both manually (writing down observations as they occurred) and from observing the video footage.
KEY WORDS: crab,
mating behavior, sperm storage, Hemigrapsus sanguineus
Numerous studies have revealed a variety of environmental effects on
mating behaviors.
Since each individual is reproductively both male and female, a conflict should arise during each
mating encounter (Angeloni et al., 2002).
With respect to
mating success, body size is arguably the most prevalent measure of fitness documented in the literature.
MATE THIS Some of the
mating habits of simultaneous hermaphrodites can be difficult for humans to understand.
Regarding cannibalistic first
matings (with two outliers excluded to obtain a normal distribution), the duration of copulation was positively predicted by fixed male body size (linear regression: [r.sup.2] = 0.09, P = 0.03, n = 58) but not by male body mass ([r.sup.2] = 0.04, P = 0.15, n = 59) nor time to copulation (linear regression: [r.sup.2] = 0.01, P = 0.61, n = 59).
dolus in (1) survivorship, (2) ability to locate and secure mates, (3) ability to acquire multiple
matings, and (4) ability to sire offspring from multiple females.
We have not been able to test whether there is sperm mixing or precedence for the sperm of the last male in these species; the monandry foiled our frequent attempts to obtain double
matings with erato and himera males.
In Experiment 3, where
matings were scored in non-competitive environments in the laboratory, males that were YH-deprived for 7 d before testing (and not provided with cue-lure) mated as frequently as control males that were continuously yeast hydrolysate-fed.
