Therefore, heterospecific and multiple amplexus
, even between males, seems to be common among explosive breeders, due to the high number of individuals and an often malebiased sex ratio at the same site (Wogel et al., 2005), the short time for breeding (Hobel, 2005b), confusion of chemical signals (Mollov et al., 2010), and low selectivity toward females (Machado & Bernarde, 2011).
We also evaluated whether species conducted specific activities (calling, amplexus
and resting) in different microhabitats at the pools, and whether there is habitat partitioning among species.
Males with longer hindlimbs may have some advantage during amplexus
or locomotor advantage in finding mates during migration (Wells 1979, Halliday 1980, Lee & Corrales 2002, Herrel et al.
El latin reza asi: "Igitur Polus lugubri habitu Electrae indutus ossa atque urnam e sepulcro tulit filii et quasi Oresti amplexus
opplevit omnia non simulacris neque imitamentis, sed luctu atque lamentis veris et spirantibus.
Pairs often remained stationary for a minute or two if undisturbed, but the female nevertheless moved intermittently, with the male still draped astride her abdomen, in copulatory embrace (amplexus
) but no longer in copula.
95, 3-6, "Amplexus
tribus assibus locantes/ Quarum multiplici fricatione/ Cunnus laxior est olentiorque/ Quam merde volucrum rapaciorum".
Males were observed calling, although no amplexus
En algunas especies, ambos sexos pueden producir llamadas de liberacion, que son aquellas que se producen por individuos no receptivos al amplexus
ante el abrazo de un macho.
maculatus en cautiverio, ya sea en acuarios o estanques, son extremadamente sensibles a las infecciones por ectoparasitos, encontrandose, por ejemplo, en piel y branquias el ich, Ichtyophthirius multifilis, protozoo ciliado dulceacuicola (Mitchell, 1989; Correa, 2004), el copepodo de agua dulce Abergasilis amplexus
(McDowall, 1990) y en aguas marinas el copepodo Caligus rogercresseyi.
During 1.37 h of continuous observation, we do not found a male around and much less was observed the amplexus
; one week later no eggs were encountered in this site.
They had the following characteristics: weight > 200 g, yellow chin, nuptial callus, and amplexus
And field observations in southern Japan's Amami islands, the frog's only home, showed that the males indeed jab their spikes into the sides of the females to hold on during amplexus
- a form of pseudocopulation in which the males mount the female and fertilize her eggs as, or soon after, she lays them.