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Padogobius

About: Padogobius is a research topic. Over the lifetime, 25 publications have been published within this topic receiving 754 citations.

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Journal ArticleDOI
TL;DR: The male Arno goby Padogobius nigricans courts ripe females by emitting sounds at a high rate, mainly from the nest hollow, but the emission of sounds by the male rapidly diminished and eventually ceased shortly after the beginning of oviposition, so the male sound seems not to be a functional component of the spawning behaviour.
Abstract: The male Arno goby Padogobius nigricans courts ripe females by emitting sounds at a high rate, mainly from the nest hollow. Laboratory observations revealed that each sound is an almost pure tone wave showing marked amplitude modulation and decrease of frequency throughout its length. The mean tone frequency averaged 79.4 Hz and the sound duration averaged 327 ms. Both these sound parameters were significantly affected by the temperature of the water. Acoustic behaviour during sexual interactions was compared for tank-confined males and males from a community group. The fact that acoustic activity of the male peaked when the female stayed motionless at the nest entrance suggested that the sound emitted by the male P. nigricans has a role as an advertising signal. Observation of spawning behaviour showed the emission of sounds by the male rapidly diminished and eventually ceased shortly after the beginning of oviposition. Thus, the male sound seems not to be a functional component of the spawning behaviour. Finally, data on vocal behaviour of this species were examined within a comparative framework, also taking into consideration phylogenetic relationships between Italian freshwater gobies.

52 citations

Journal ArticleDOI
TL;DR: Factors affecting male reproductive success were investigated in a natural population of Padogobius martensi, a small freshwater goby showing paternal care and body size was a good predictor for the presence of eggs in the nest.
Abstract: Factors affecting male reproductive success were investigated in a natural population of Padogobius martensi, a small freshwater goby showing paternal care. Males were found to be polygynous and their mating success was related both to their body length and to the size of the nest occupied. Body size was a good predictor for the presence of eggs in the nest. The number of egg batches guarded by a male was highly correlated with the area of his nest. Mature males with a total length of 48 mm or less (1-year-old individuals) occupied nest sites in breeding areas but were never found with eggs in their nests. The components of sexual selection which may determine the variance in mating success are discussed.

51 citations

Journal ArticleDOI
TL;DR: The measurement of particle velocity of stream AN and P. martensii sounds indicates that this species is well adapted to communicate acoustically in a complex noisy shallow-water environment.
Abstract: The most sensitive hearing and peak frequencies of courtship calls of the stream goby, Padogobius martensii, fall within a quiet window at around 100Hz in the ambient noise spectrum. Acoustic pressure was previously measured although Padogobius likely responds to particle motion. In this study a combination pressure (p) and particle velocity (u) detector was utilized to describe ambient noise of the habitat, the characteristics of the goby’s sounds and their attenuation with distance. The ambient noise (AN) spectrum is generally similar for p and u (including the quiet window at noisy locations), although the energy distribution of u spectrum is shifted up by 50–100Hz. The energy distribution of the goby’s sounds is similar for p and u spectra of the Tonal sound, whereas the pulse-train sound exhibits larger p–u differences. Transmission loss was high for sound p and u: energy decays 6–10dB∕10cm, and sound p∕u ratio does not change with distance from the source in the nearfield. The measurement of particl...

49 citations

Journal ArticleDOI
TL;DR: The results show that the visual display is the main signal to orient and attract the female towards the male's nest; sound production becomes more frequent when the male approaches and enters his nest.
Abstract: Seventeen pairs of Padogobius martensi were observed to compare the relative occurrence of the acoustic and visual displays performed by the male during courtship. The results show that the visual display, which gradually decreases when the male approaches the nest, is the main signal to orient and attract the female towards the male's nest; sound production, on the other hand, becomes more frequent when the male approaches and enters his nest. So, the acoustic signal has an important role when the visual one becomes ineffectual, when the male is hidden in the shelter. Visual and acoustic signals seem to have a complementary role and the male P.martensi uses the most effective signal in each particular situation.

29 citations

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20151
20141
20081
20072
20012
19981