@article {53142, title = {Acoustic communication and baffling behaviors of crickets}, journal = {The Florida Entomologist}, volume = {65}, year = {1982}, pages = {33{\textendash}44}, author = {Forrest, TG} } @article {53136, title = {Aggressiveness, Territoriality, and Sexual Behavior in Field Crickets (Orthoptera: Gryllidae)}, journal = {Behaviour}, volume = {17}, year = {1961}, month = {Jan-01-1961}, pages = {130 - 223}, abstract = {

Most contacts between adult male field crickets involve aggressive behavior by one or both individuals and terminate with the obvious retreat of one individual. Aggressive behavior consists of one or more of several actions: in mild encounters there is either rearing of the forebody, lashing of the antennae, and shaking of the body, or else rearing of the hind body, kicking with the hind legs, and shaking of the body; in intense encounters, antennal lashing and rearing of the forebody are followed by spreading the mandibles, stridulating distinctively, rushing forward, sparring with the forelegs, butting with the head, and grappling, wrestling, or biting with the mandibles. A male is often flipped back or thrown sideways, but mutilation as a result of fighting is rare, and only in the most intense encounters is the winner determined by what seems to be superior strength or fighting ability. The outcomes of most encounters are determined by the relative tenacity of the two males, and the intensity of aggression exhibited is correlated with the length of the fight, continued aggressive activity developing into increasingly severe combat until one male finally retreats. Groups of adult male field crickets caged in small arenas form essentially linear dominance hierarchies which are stable for short periods of time and which can be described in terms of several characteristics: (1) each male dominates all or nearly all of his encounters with males below him in the hierarchy, (2) the total number of encounters by individual males decreases gradually toward the bottom of the hierarchy, (3) the intensity of aggression exhibited during encounters decreases more or less gradually toward the bottom of the hierarchy and the numbers of no-decision and no-aggression encounters and actively homosexual contacts increase, and (4) encounters between males which rank next to each other are usually more intense than encounters between males which are far apart in the hierarchy.

}, issn = {0005-7959}, doi = {10.1163/156853961X00042}, url = {http://booksandjournals.brillonline.com/content/10.1163/156853961x00042} } @article {52604, title = {Age-dependent variation in the terminal investment threshold in male crickets}, journal = {Evolution}, year = {2018}, month = {Jan-02-2018}, abstract = {

The terminal investment hypothesis proposes that decreased expectation of future reproduction (e.g., arising from a threat to survival) should precipitate increased investment in current reproduction. The level at which a cue of decreased survival is sufficient to trigger terminal investment (i.e., the terminal investment threshold) may vary according to other factors that influence expectation for future reproduction. We test whether the terminal investment threshold varies with age in male crickets, using heat-killed bacteria to simulate an immune-inducing infection. We measured calling effort (a behavior essential for mating) and hemolymph antimicrobial activity in young and old males across a gradient of increasing infection cue intensity. There was a significant interaction between the infection cue and age in their effect on calling effort, confirming the existence of a dynamic terminal investment threshold: young males reduced effort at all infection levels, whereas old males increased effort at the highest levels relative to na\ïve individuals. A lack of a corresponding decrease in antibacterial activity suggests that altered reproductive effort is not traded against investment in this component of immunity. Collectively, these results support the existence of a dynamic terminal investment threshold, perhaps accounting for some of the conflicting evidence in support of terminal investment.

}, keywords = {Age-dependent reproductive effort, fecundity compensation, Gryllodes sigillatus, residual reproductive value, trade-offs}, doi = {10.1111/evo.13443}, url = {http://doi.wiley.com/10.1111/evo.13443}, author = {Duffield, Kristin R. and Hampton, Kylie J. and Houslay, Thomas M. and Hunt, John and Rapkin, James and Sakaluk, Scott K. and Sadd, Ben M.} } @article {48012, title = {A new species of Miogryllus Saussure, 1877 and new record of ~Miogryllus piracicabensis Piza, 1960 (Orthoptera: Gryllidae) from State of Rio Grande do Sul, Brazil, with calling song and chromosome complement}, journal = {Zootaxa}, volume = {4291}, year = {2017}, month = {Dec-07-2017}, pages = {361}, issn = {1175-5326}, doi = {10.11646/zootaxa.4291.210.11646/zootaxa.4291.2.8}, url = {https://biotaxa.org/Zootaxa/issue/view/zootaxa.4291.2https://biotaxa.org/Zootaxa/article/view/zootaxa.4291.2.8}, author = {Marcelo Pinheiro Orsini and Maria K{\'a}tia Matiotti Da Costa and Neucir Szinwelski and Luciano de P. Martins and Robson Crepes Corr{\^e}a and Vitor Falchi Timm and Zefa, Edison} } @article {47817, title = {Southern Cricket Eumodicogryllus bordigalensis (Orthoptera: Gryllidae) in the Czech Republic: new records and notes on the biology and stridulation}, journal = {Polish Journal of Entomology}, volume = {76}, year = {2007}, pages = {47-55}, chapter = {47}, abstract = {Recently, the population of Eumodicogryllus bordigalensis consisting of more than ten males has been observed in Novosedly railway station in the most south-eastern part of the Czech Republic during 2004-2006. The individuals occupied railway embankment composed of coarse grit. Single male was found on other place at Mušlov sand pit. In southern Moravia, this species probably occurs on the northern edge of its range. The adults occur from the beginning of June to the beginning of September. The calling song of males of E. bordigalensis from Novosedly consists of long, uninterrupted sequence of syllables which lasts several minutes. The normal duration of syllables were 0.122-0.149 s, they are consisted of 11-13 impulses and the carrier frequency shows a band between 4.6-15.5 KHz.}, keywords = {bionomics, Czech Republic, distribution, Eumodicogryllus bordigalensis, faunistics, stridulation}, author = {Jaroslav Holu{\v s}a and Petr Ko{\v c}{\'a}rek and Robert Vlk and Pavel Marhoul} } @article {47792, title = {Bioacoustic studies on some cricket species (Insecta:Orthoptera: Gryllidae) from Romania}, journal = {Analele Ştiinţifice ale Universităţii {\quotedblbase}Al. I. Cuza{\textquotedblright} Iaşi, s. Biologie animală}, volume = {LIV}, year = {2008}, pages = {57-64}, chapter = {57}, abstract = {

There are 9 cricket species known from Romania belonging to the family Gryllidae. The ordinary stridulation of 7 species of those has been analyzed in this paper. The species belonging to the subfamily Gryllinae: Gryllus campestris, Acheta domestica, Melanogryllus desertus, Modicogryllus frontalis and Modicogryllus truncatus stridulate especially in the afternoon and in the evening, rarely during daytime, meanwhile the species Pteronemobius heydenii from the subfamily Nemobiinae stridulate only during daytime and especially by sunny weather, while the only species belonging to the subfamily Oecanthinae from our country fauna, Oecanthus pellucens, stridulate at night, very rarely during daytime (mostly in autumn). Details of the stridulatory vein and identification criteria for the studied cricket species are presented in this paper; also we have annalysed the spectrograms and the oscillograms for the ordinary stridulation of the 7 species. The species Modicogryllus truncatus, collected at Mărăşeşti, is a new report for Moldavia.

}, keywords = {bioacoustics, crickets, oscillogram, spectrogram}, author = {Ionut Stefan Iorgu and Gheorghe Mustata} } @article {43232, title = {The Seasonal Succession of Orthopteran Stridulation near Raleigh, North Carolina}, journal = {Journal of the Elisha Mitchell Scientific Society}, volume = {67}, year = {1951}, month = {June 1951}, pages = {87-95}, chapter = {87}, author = {B. B. Fulton} }