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Call differences and calling site segregation in anuran species from central Amazonian floating meadows
  • W. Hödl
  • Biology, Medicine
  • Oecologia
  • 1 December 1977
The acoustic behaviour of 15 sympatric and synchronically breeding species of frogs in an area of floating meadows near Manaus (Brazil) was studied for a period of 8 months to study the mating calls of these species. Expand
Growth, morphometrics, size at maturity, sexual dimorphism and condition index of Austropotamobius torrentium Schrank
Analyses of the weight–length relationship of A. torrentium revealed that males gained weight faster than females, due to an increased growth of chelae of males larger than 50 mm, which is assumed to be the size of sexual maturity of males. Expand
Parental investment, potential reproductive rates, and mating system in the strawberry dart-poison frog, Dendrobates pumilio
The discrepancy in PRRs between the sexes due to differences in parental investment and the prolonged breeding season is sufficient to explain the observed mating pattern i.e., selective females, high variance in male mating success, and the considerable opportunity for sexual selection. Expand
Bimodal signal requisite for agonistic behavior in a dart-poison frog, Epipedobates femoralis
It is reported that physical attacks by a territorial male are provoked only in response to dynamic bimodal stimuli in which the acoustic playback of vocalizations is coupled with vocal sac pulsations, but not by either unimodal cues presented in isolation or static bimmodal stimuli. Expand
Acoustic interference and recognition space within a complex assemblage of dendrobatid frogs
Data provide compelling evidence of a role of heterospecific calls in evolutionarily shaping the frogs' recognition space within a complex acoustic assemblage without obvious concomitant effects on the signal. Expand
Who is Calling? Intraspecific Call Variation in the Aromobatid Frog Allobates femoralis
Many territorial species respond less aggressively to familiar neighbours than to unfamiliar floating strangers based on individual differences in acoustic signals. This form of social recognition,Expand
Glassy Fathers Do Matter: Egg Attendance Enhances Embryonic Survivorship in the Glass Frog Hyalinobatrachium valerioi
It is hypothesized that egg attendance in H. valerioi increases embryonic survivorship by deterring egg predators and preventing desiccation. Expand
Strong male/male competition allows for nonchoosy females: high levels of polygynandry in a territorial frog with paternal care
It is hypothesized that female polyandry in this species has evolved because of enhanced offspring survival when paternal care is allocated to multiple partners. Expand
Site fidelity and patterns of short- and long-term movement in the brilliant-thighed poison frog Allobates femoralis (Aromobatidae)
Male long-term movement reflects spatial structure and prevailing social interactions and is a reliable indicator for tadpole deposition sites and the combined effects of intra- and inter-seasonal movement promote the diversity of mates for both sexes. Expand
Communication in Noisy Environments i: Acoustic Signals of Staurois Latopalmatus Boulenger 1887
It is concluded that acoustic signal efficiency in environments with low-frequency dominated noise can only be attained through high frequency calls, and it is suggested that microhabitat characteristics represent strong selective pressures on the form of acoustic signals. Expand