scholarly journals Underwater sound production varies within not between species in sympatric newts

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6649 ◽  
Author(s):  
Jiří Hubáček ◽  
Monika Šugerková ◽  
Lumír Gvoždík
Keyword(s):  
Sound Production ◽  
Species Recognition ◽  
Interspecific Variation ◽  
Peak Frequency ◽  
Species Variation ◽  
Underwater Sound ◽  
Lissotriton Vulgaris ◽  
Widespread Phenomenon ◽  
Evolutionary Consequences ◽  
Ichthyosaura Alpestris

Sound production is a widespread phenomenon among animals. Effective sound use for mate or species recognition requires some acoustic differentiation at an individual or species level. Several species of caudate amphibians produce underwater sounds, but information about intra- and interspecific variation in their acoustic production is missing. We examined individual, sex, and species variation in underwater sound production in adults of two sympatric newt taxa, Ichthyosaura alpestris and Lissotriton vulgaris. Individual newts produced simple low- (peak frequency = 7–8 kHz) and mid-high frequency (14–17 kHz) clicks, which greatly overlap between sexes and species. Individual differences explained about 40–50% of total variation in sound parameters. These results provide foundations for further studies on the mechanisms and eco-evolutionary consequences of underwater acoustics in newts.

An Indication of Underwater Sound Production by Squid

Nature ◽  
1963 ◽  
Vol 199 (4890) ◽  
pp. 250-251 ◽  
Author(s):  
ROBERT T. S. IVERSEN ◽  
PAUL J. PERKINS ◽  
Richard D. Dionne
Keyword(s):  
Sound Production ◽  
Underwater Sound

Distribution of a Secale cereale DNA repeat sequence among 25 Hordeum species

Genome ◽  
1989 ◽  
Vol 32 (3) ◽  
pp. 383-388 ◽  
Author(s):  
P. K. Gupta ◽  
G. Fedak ◽  
S. J. Molnar ◽  
Roger Wheatcroft
Keyword(s):  
Dna Sequences ◽  
Secale Cereale ◽  
Dna Hybridization ◽  
Interspecific Variation ◽  
Repeat Sequence ◽  
Species Variation ◽  
Repeated Dna ◽  
Repeat Units ◽  
Dna Repeat ◽  
Hordeum Species

DNA of 61 accessions representing 25 Hordeum species was tested for homology to a highly repeated 120-bp sequence from Secale cereale (rye). Homology to the probe (pSC119) was detected in dot blots of all species except H. vulgare (cultivated barley) and its related species, H. agriocrithon and H. spontaneum. Hybridization patterns of Southern blots of restriction fragments demonstrated both intraspecific and interspecific variation in the organization of complex units of DNA having homology to the probe. For eight species, digestion of the DNA with BamHI gave ladder patterns characteristic of tandem arrays of 120-bp repeat units. For EcoRI, HindIII, and SacI digests, the hybridization patterns appeared to be highly conserved in the section Hordeum, except those for H. bulbosum, which were unique. A further set of patterns for these three enzymes was common among the remaining species of the genus. Thus, DNA hybridization with pSC119 generally gave patterns consistent with the current taxonomy of Hordeum species, except that H. bulbosum and H. vulgare were not shown to be closely related.Key words: Hordeum, repeated DNA sequences, pSC119, species variation.

Acoustic behavior of Metaleptea adspersa (Orthoptera: Acrididae)

2002 ◽  
Vol 134 (1) ◽  
pp. 113-123 ◽  
Author(s):  
Estrellita Lorier ◽  
M. Dolores García ◽  
M. Eulalia Clemente ◽  
Juan José Presa
Keyword(s):  
Sound Production ◽  
Hind Wing ◽  
Peak Frequency ◽  
Tape Recorder ◽  
Main Peak ◽  
Acoustic Behavior ◽  
In Captivity

AbstractThe sounds produced by Metaleptea adspersa (Blanchard 1843) were recorded in captivity with an analogical tape recorder. The signal was digitized in the laboratory and studied with a software. Three types of sound were described: copulation, rivalry, and crepitation. All three sounds were produced only by males. The frequency of the sounds occupied a broadband, from 3–4 to 16 kHz, although the main peak frequency for each type of song differed. We also studied the structures involved in sound production. Copulation and rivalry songs were produced by the rubbing of the subcostal, radial, medial, and cubital 1 veins of the hind wing against the subcostal and radial veins of the tegmen; the enlarged cubital area of the hind wing acted as a resonator. Crepitation sound was produced by the cubital area of hind wing when its expanded membrane became taut.

scholarly journals Trait decoupling promotes evolutionary diversification of the trophic and acoustic system of damselfishes

2014 ◽  
Vol 281 (1789) ◽  
pp. 20141047 ◽  
Author(s):  
Bruno Frédérich ◽  
Damien Olivier ◽  
Glenn Litsios ◽  
Michael E. Alfaro ◽  
Eric Parmentier
Keyword(s):  
Sound Production ◽  
Evolutionary Rate ◽  
Morphological Evolution ◽  
Ecological Diversification ◽  
Evolutionary Diversification ◽  
The Family ◽  
Acoustic Diversity ◽  
Empirical Tests ◽  
Evolutionary Consequences ◽  
Integrated Structures

Trait decoupling, wherein evolutionary release of constraints permits specialization of formerly integrated structures, represents a major conceptual framework for interpreting patterns of organismal diversity. However, few empirical tests of this hypothesis exist. A central prediction, that the tempo of morphological evolution and ecological diversification should increase following decoupling events, remains inadequately tested. In damselfishes (Pomacentridae), a ceratomandibular ligament links the hyoid bar and lower jaws, coupling two main morphofunctional units directly involved in both feeding and sound production. Here, we test the decoupling hypothesis by examining the evolutionary consequences of the loss of the ceratomandibular ligament in multiple damselfish lineages. As predicted, we find that rates of morphological evolution of trophic structures increased following the loss of the ligament. However, this increase in evolutionary rate is not associated with an increase in trophic breadth, but rather with morphofunctional specialization for the capture of zooplanktonic prey. Lineages lacking the ceratomandibular ligament also shows different acoustic signals (i.e. higher variation of pulse periods) from others, resulting in an increase of the acoustic diversity across the family. Our results support the idea that trait decoupling can increase morphological and behavioural diversity through increased specialization rather than the generation of novel ecotypes.

scholarly journals Sociability and pair-bonding in gerbils: a comparative experimental study

2018 ◽  
Vol 65 (4) ◽  
pp. 363-373 ◽  
Author(s):  
Andrey V Tchabovsky ◽  
Ludmila E Savinetskaya ◽  
Natalia L Ovchinnikova ◽  
Alexandra Safonova ◽  
Olga N Ilchenko ◽  
...  
Keyword(s):  
Experimental Study ◽  
Mating Systems ◽  
Male Partner ◽  
Group Living ◽  
Interspecific Variation ◽  
Meriones Unguiculatus ◽  
Species Variation ◽  
Pair Bonding ◽  
Partner Preference ◽  
Partner Preferences

AbstractIn a study of gerbils with contrasting social and mating systems (group-living monogamous Mongolian gerbil Meriones unguiculatus, solitary nonterritorial promiscuous midday jird M. meridianus, and solitary territorial promiscuous pale gerbil Gerbillus perpallidus), we employed partner preference tests (PPTs) to assess among-species variation in sociability and pair-bonding patterns and tested whether the nature of contact between individuals: direct contact (DC) versus nondirect contact (NDC) affected our results. We measured male preferences as the time: 1) spent alone, 2) with familiar (partner), and 3) unfamiliar (stranger) female in the 3-chambered apparatus. Gerbil species differed strongly in sociability and male partner preferences. The time spent alone was a reliable indicator of species sociability independent of the nature of contact, whereas the pattern and level of between-species differences in male partner preferences depended on contact type: DC PPTs, unlike NDC-tests, discriminated well between monogamous and promiscuous species. In the DC-tests, stranger-directed aggression and stranger avoidance were observed both in the highly social monogamous M. unguiculatus and the solitary territorial promiscuous G. perpallidus, but not in the nonterritorial promiscuous M. meridianus. In M. unguiculatus, stranger avoidance in the DC-tests increased the time spent with the partner, thus providing evidence of a partner preference that was not found in the NDC-tests, whereas in G. perpallidus, stranger avoidance increased the time spent alone. This first comparative experimental study of partner preferences in gerbils provides new insights into the interspecific variation in gerbil sociality and mating systems and sheds light on behavioral mechanisms underlying social fidelity and pair-bonding.

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