@article {58451, title = {Search behaviour and mate choice by female field crickets, Gryllus integer.}, journal = {Anim Behav}, volume = {58}, year = {1999}, month = {1999 Dec}, pages = {1293-1298}, abstract = {

The search tactics that females might employ to find a suitable mate impose different cognitive demands on searchers and some theoretical models of search behaviour presuppose that females are able to recall encountered males and return to mate with a previously sampled individual. In this study, I exposed female field crickets, Gryllus integer, to male calls either sequentially or simultaneously from two speakers in a three-arm radial maze. Subjects that were exposed to the two calls in sequence and allowed to move to the location of each call returned, in the absence of any audible signal, to the location of the call initially encountered. Subjects allowed to walk to the location of only one of two simultaneously active speakers before playback of both calls was terminated were as likely to move, in the absence of any audible signal, to the never-active speaker as to the location of the other male call. These subjects were also more likely to search all three arms of the maze and searched for a longer time than females exposed to calls sequentially. Thus, female G. integer probably do not construct a spatial representation of the locations of potential mates from the calls of males that advertise concurrently. The results of this study suggest, however, that female G. integer are able to recall previously encountered males under some conditions and may potentially employ a search tactic that is more complicated than a simple instantaneous comparison of the qualities of males that are actively calling. Copyright 1999 The Association for the Study of Animal Behaviour.

}, issn = {0003-3472}, doi = {10.1006/anbe.1999.1243}, author = {Wiegmann, DD} } @article {58221, title = {Acoustic signals in cicada courtship behaviour (order Hemiptera, genus Tibicina)}, journal = {Journal of Zoology}, volume = {262}, year = {1999}, month = {Jan-01-1999}, pages = {217 - 224}, abstract = {

During pair formation, cicadas produce acoustic signals that allow sexual partners to meet. The male is generally the emitter, producing calling songs at long range and courtship songs at short range, and the female generally the receiver. The male\–female courtship behaviour of seven taxa belonging to the Palaearctic genus Tibicina is described here for the first time. Male courtship songs consisted of a succession of groups of pulses arranged in two sub-groups. They were short in duration with strong amplitude variations. In all taxa, courtship songs were preceded by a series of 1\–5 audible wing-flicks. Differences in courtship song structure between two pairs of sympatric species, respectively T. corsica corsica/T. nigronervosa and T. corsica fairmairei/T. tomentosa, suggest that courtship signals could act as distinctive species mating recognition systems. In response to male acoustic signalling, females of T. c. corsica, T. c. fairmairei and T. nigronervosa produced audible wing-flicks such that both sexes established an acoustic duet ending in physical contact. In addition, males and females of T. tomentosa produced silent wing-flicks, a previously unknown behaviour, which could facilitate pheromone diffusion. Females did not exhibit a species-specific temporal pattern in acoustic reply to male courtship song and female wing-flick behaviour does not seem necessary for pair formation. Nevertheless, this strategy through male and female signalling ensured a reciprocal phonotactic approach that probably enhanced the likelihood for the two sexes to meet in complex habitats.

}, keywords = {audible and silent wing-flicks, cicadas Tibicina, courtship, male{\textendash}female duet, sound communication}, issn = {0952-8369}, doi = {10.1017/S0952836903004680}, url = {http://doi.wiley.com/10.1017/S0952836903004680}, author = {Sueur, Jerome and Aubin, Thierry} } @article {58055, title = {MATE CHOICE IN TREE CRICKETS AND THEIR KIN}, year = {1999}, abstract = {

Mate choice theory has become a major field of research in behavioral ecology. Tree crickets provide excellent opportunities for studying the diversity and variability of mate choice. The evidence for female mate choice in tree crickets is reviewed, and broad comparisons with other orthopteran groups are made. The evidence shows that female choice may occur during several different stages of mating and may target several different criteria. Song preferences are perhaps dominated by stabilizing preferences for the cues of species recognition, but there is a growing body of evidence for directional preferences based on sensory biases or mate quality. Mate rejection during courtship and forms of postcopulatory choice may favor males, based both on phenotypic quality and on the amount of nutritious courtship gifts they provide, and may differ with the value of mating incentives. Understanding the balance and trade-offs between different forms of mate choice may help in understanding their evolutionary causes.

}, keywords = {courtship feeding, Female choice, Gryllidae, Orthoptera, sexual selection}, doi = {10.1146/annurev.ento.44.1.371}, url = {http://www.annualreviews.org/doi/10.1146/annurev.ento.44.1.371}, author = {Brown, W. D.} } @article {58052, title = {Use of vocal signatures for the inventory of free-flying Neotropical bats}, journal = {BiotropicaBiotropica}, volume = {31}, number = {3}, year = {1999}, pages = {507-516}, abstract = {

An ongoing study is being conducted to test the efficacy of the Anabat II detector and analysis system in obtaining reliable vocal signatures for the identification of non-phyllostomid species of bats. We sampled a wide range of elevations and associated habitat types throughout Belize. Anabat provides an instantaneous output of echolocation call structure with a laptop computer. Select sequences can be saved directly to the hard drive, avoiding extraneous noise and sound distortion commonly associated with tape recorders. To date, 18 of the 37 species known or expected
to occur in the study region were identified by recognizable differences in the time-frequency characteristics of echolocation calls. In general, each family is recognizable by call structure patterns and species readily separated by frequency range parameters. Species that commute or forage at high altitudes are not susceptible to capture but are conspicuous by acoustic sampling. Further work is needed to determine limitations of the equipment, establish better sampling procedures, and develop a comprehensive library of vocal signatures incorporating the range of variation
inherent in each species. As this work progresses, we predict the addition of hitherto unknown species occurring within the study region.

}, keywords = {acoustic identification, Anabat, bats, Bauerus dubiaquercus, Chiroptera, diversity assessment, Emballonuridae, Eptesicus furinalis, inventory, Mormoopidae, Mormoops megalophylla, Myotis elegans, Neotropics, Noctilio leporinus, Pteronotus davyi, Pteronotus parnellii, Pteronotus personatus, Rhogeessa tumida, Saccopteryx bilineata, Saccopteryx leptura}, author = {O{\textquoteright}Farrell, Michael J. and Miller, Bruce W.} } @article {58051, title = {Qualitative Identification of Free-flying Bats Using the Anabat Detector}, journal = {Journal of MammalogyJournal of Mammalogy}, volume = {80}, number = {1}, year = {1999}, note = {JRS}, pages = {11-23}, abstract = {

A variety of ultrasonic bat detectors have been used over the past 3 decades to identify freeflying bats. Analyses of recorded echolocation calls were slow and typically restricted to few calls and at a resolution obscuring details of call structure. The Anabat II detector and associated zerocrossings analysis system allows an immediate examination, via a laptop computer, of the timefrequency structure of calls as they are detected. These calls can be stored on the hard drive for later examination, editing, and measurement. Many North American bats can be identified to species by qualitatively using certain structural characteristics of calls, primarily approximate maximum and minimum frequencies and morphological aspects of calls e.g., linearity and changes in slope). To identify calls precisely, it is important to use a continuous sequence of calls from an individual in normal flight rather than from single isolated calls. All calls are not equally useful, and many fragmentary calls must be discarded before making a determination. Each sequence of calls must be examined to ensure that multiple bats have not been simultaneously recorded, which confounds correct identification. We found the percentage of nonusable calls within usable vocal sequences to be highest in vespertilionids 20-40\%), whereas for other families this was frequently \<10\%. Active rather than passive collection of data maximizes quality and quantity of diagnostic calls and provides a contextual base for the investigator.

}, keywords = {Anabat, bats, Chiroptera, echolocation, Eptesicus furinalis, identification, Lasionycteris noctivagans, Lasiurus cinereus, Lasiurus ega, Molossus ater, Molossus molossus, Molossus sinaloae, Myotis californicus, Myotis ciliolabrum, Myotis yumanensis, Noctilio leporinus, Saccopteryx bilineata, Tadarida brasiliensis, technique, vocal signatures}, author = {O{\textquoteright}Farrell, Michael J. and Miller, Bruce W. and Gannon, William L.} } @article {52756, title = {Nutritional effects on male calling behaviour in the variable field cricket}, journal = {Animal Behaviour}, volume = {57}, year = {1999}, month = {Jan-01-1999}, pages = {89 - 95}, abstract = {

In the variable field cricket,Gryllus lineaticeps, females prefer higher chirp rates and longer chirp durations in male calling song. Higher chirp rates are energetically more expensive to produce, but the energetic cost of calling does not vary with chirp duration. We tested the hypothesis that nutrition affects male chirp rate and chirp duration. Full-sibling brothers of similar age were placed on high- and low-nutrition feeding regimes. There was no effect of feeding regime on male weight; neither group showed a significant change in weight, and the two groups did not differ from each other in weight change. However, males on the high-nutrition feeding regime both called more frequently and called at higher chirp rates when they did call. The two groups did not differ in chirp duration, the duration of pulses within chirps or chirp dominant frequency. These results suggest that females select mates based on one nutrition-dependent call character (chirp rate) and one nutrition-independent call character (chirp duration). In addition, because males in the two groups did not show significant differences in weight change, and because males on the high-nutrition feeding regime engaged in energetically more expensive calling, these results suggest that males invest any excess energy above their basic maintenance requirements in the production of call types that increase their attractiveness to females. The absence of a relationship between body condition and calling song structure for males in the field may be a consequence of this pattern of energy allocation.

}, issn = {00033472}, doi = {10.1006/anbe.1998.0964}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347298909642}, author = {William E. Wagner and W. Wyatt Hoback} } @article {52746, title = {Description of two new species of Amblycerus Thunberg (Coleoptera: Bruchidae) with a probable stridulatory mechanism}, journal = {Proceedings of the Entomological Society of Washington}, volume = {101}, year = {1999}, pages = {337-346}, chapter = {337}, author = {Cibele S. Ribeiro-Costa} } @article {52683, title = {Songs and Systematics of Some Tettigoniidae from Colombia and Ecuador I. Pseudophyllinae (Orthoptera)}, journal = {Journal of Orthoptera Research}, year = {1999}, month = {Jan-11-1999}, pages = {163}, abstract = {

This paper provides taxonomic description for 16 species of pseudophylline katydid. Analysis of the calling songs is given for all but one. Among 14 genera Mystron and Stetharasa are new. Eleven new species are described from four Provinces in Ecuador: Morona Santiago, Pichincha, Los Rios and Napo, and two southern Departamentos of Colombia: Valle del Cauca and Risaralda. The diverse species-specific calling songs of Pseudophyllinae are comprised of either transient or sinusoidal pulses. The carrier frequency song spectrum occurs in conjunction with these two pulse types, as either a band (transient pulse, low Q) or a single dominant narrow-peak carrier (sinusoidal, high Q). And stridulatory file morphology differs accordingly. Principal carriers in the songs of the species described here range from the audio to the low ultrasonic (20-30 kHz); overall among pseudophylline species whose songs are known (n = 65), a majority (75\%) incorporate high Q pulses.

}, issn = {10826467}, doi = {10.2307/3503439}, url = {http://www.jstor.org/stable/3503439?origin=crossref}, author = {Z., Fernando Montealegre and Glenn K. Morris} } @article {52602, title = {Observations sur la stridulation et la d{\'e}fense chez deux Esp{\`e}ces de Phasmes: Heteropteryx dilatata (Parkinson, 1798) et Phyllium bioculatum Gray, 1832}, journal = {Bulletin de l{\textquoteright}association Phyllie}, volume = {1}, year = {1999}, month = {02/1999}, pages = {8-9}, chapter = {8}, url = {https://www.researchgate.net/publication/318462665_Observations_sur_la_stridulation_et_la_defense_chez_deux_Especes_de_Phasmes_Heteropteryx_dilatata_Parkinson_1798_Insecta_Phasmatoptera_Bacillidae_Heteropteryginae_et_Phyllium_bioculatum_Gray_1832_Inse}, author = {Emmanuel Delfosse} } @article {52557, title = {WHICH QS TO CHOOSE: QUESTIONS OF QUALITY IN BIOACOUSTICS?}, journal = {Bioacoustics}, volume = {9}, year = {1999}, month = {Feb-04-20122001}, pages = {351 - 359}, abstract = {

Two Q factors are in common use in bioacoustics: Q, the Quality Factor and Q10 dB. The usage, definitions and separate application of these two terms can be traced back for more than 30 years. The two terms provide different measurements of the sharpness of tuning of e.g. acoustic systems. The two terms have been used in separate contexts and they measure different things. In view of the confusion that arises from the shared use of the letter Q, it is important that whichever Q is used is defined clearly in all publications.

}, keywords = {Q, Q10 dB, Quality factor, resonance, sharpness of tuning}, issn = {0952-4622}, doi = {10.1080/09524622.1999.9753408}, url = {https://www.tandfonline.com/doi/full/10.1080/09524622.1999.9753408}, author = {H. C. Bennet-Clark} } @article {47785, title = {A nested analysis of song groups and species boundaries in the Hawaiian cricket genus Laupala.}, journal = {Mol Phylogenet Evol}, volume = {11}, year = {1999}, month = {1999 Mar}, pages = {332-41}, keywords = {animal behaviour, Animals, biological models, ecosystem, Gryllidae, Haplotypes, Hawaii, male, mitochondrial DNA, population genetics, species specificity}, issn = {1055-7903}, doi = {10.1006/mpev.1998.0558}, author = {Shaw, K L} } @article {17209, title = {Transduction of mechanical energy into sound energy in the cicada Cyclochila australasiae}, journal = {J Exp Biol}, volume = {202 (Pt 13)}, year = {1999}, month = {1999 Jul}, pages = {1803-17}, abstract = {

The anatomy of the paired tymbal muscles of Cyclochila australasiae was described. Force-distance relationships of the sound-producing in-out cycle of tymbal movement were measured. The largest forces were measured when the push occurred at the apodeme pit on the tymbal plate at angles similar to the angles of internal pull of the tymbal muscle. Initially, inward movement was opposed by the elasticity of the tymbal, which stored energy. At a mean force of 0. 38 N after a mean inward strain of 368 microm, the tymbal ribs buckled, the mean energy release being 45.1 microJ. The energy release occurred over 2-10 ms in three or four sound-producing steps as successive tymbal ribs buckled inwards. After the ribs had buckled, the force decreased to a mean value of 0.17 N. The force returned to zero during the outward movement, during which the tymbal ribs buckled outwards. The mean energy dissipated in the outward movement was 32.8 microJ. During contraction, the tymbal muscle produced mean values for the peak active force of 0.31 N over 295 microm, which gave mean values for the area of the work loops of 47.0 microJ. The calling song of C. australasiae had a mean pulse rate of 234 Hz (117 Hz for each side of the insect). The peak power to mean power ratio for the songs was 8.51:1 (+9.30 dB). Measurements of the sound field around tethered insects and of the peak power to mean power ratio of the songs gave values for the mean power of the song of 3.15-7 mW; these correspond to an energy per song pulse of 13.5-30 microJ. Previously reported mean values are 3. 15 mW for protest song and 5.1 mW for calling song. The efficiency of transduction of mechanical energy into sound energy is between 18 and 46 \%.

}, issn = {1477-9145}, url = {http://jeb.biologists.org/content/202/13/1803.long}, author = {H. C. Bennet-Clark and Daws, AG} } @article {12364, title = {On Leptobrachium from Thailand with a Description of a New Species (Anura: Pelobatidae)}, journal = {Japanese Journal of Herpetology}, volume = {18}, year = {1999}, month = {06/1999}, pages = {19-29}, chapter = {19}, abstract = {

We compared morphological characters among Thai populations of Leptobrachium currently assigned to L. hasseltii or L. pullum. We also examined syntypes of the latter, which was first described from Vietnam as Megalophrys hasseltii var. pullus Smith, 1921, and designated the lectotype. The Thai populations are slightly variable in adult and larval morphology, but are collectively different from L. hasseltii (originally described form Java) or L. pullum. We therefore describe a new species, L. smithi, for those populations on the basis of the smaple from Khao Cong, southern Thailand.

}, keywords = {Biogeography, Leptobrachium, Peloblatidae, systematics, Thailand}, url = {http://xa.yimg.com/kq/groups/18830254/2047785231/name/paper.pdf}, author = {Matsui, Masafumi and Nabhitabhata, Jarujin and Panha, Somsak} }