00351nas a2200109 4500008004100000245006200041210006200103300001200165490000700177100001600184856004100200 1982 eng d00aAcoustic communication and baffling behaviors of crickets0 aAcoustic communication and baffling behaviors of crickets a33–440 v651 aForrest, TG uhttps://bio.acousti.ca/sv/node/5314202476nas a2200133 4500008004100000022001400041245009800055210006900153260001600222300001400238490000700252520200700259856007602266 1961 eng d a0005-795900aAggressiveness, Territoriality, and Sexual Behavior in Field Crickets (Orthoptera: Gryllidae)0 aAggressiveness Territoriality and Sexual Behavior in Field Crick cJan-01-1961 a130 - 2230 v173 a

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.

 uhttp://booksandjournals.brillonline.com/content/10.1163/156853961x0004202215nas a2200241 4500008004100000245008200041210006900123260001600192520143800208653003801646653002701684653002501711653003201736653001501768100002601783700002301809700002401832700001501856700001801871700002301889700001801912856004301930 2018 eng d00aAge-dependent variation in the terminal investment threshold in male crickets0 aAgedependent variation in the terminal investment threshold in m cJan-02-20183 a

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 naïve 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.

10aAge-dependent reproductive effort10afecundity compensation10aGryllodes sigillatus10aresidual reproductive value10atrade-offs1 aDuffield, Kristin, R.1 aHampton, Kylie, J.1 aHouslay, Thomas, M.1 aHunt, John1 aRapkin, James1 aSakaluk, Scott, K.1 aSadd, Ben, M. uhttp://doi.wiley.com/10.1111/evo.1344300890nas a2200205 4500008004100000022001400041245022700055210006900282260001600351300000800367490000900375100003000384700003600414700002300450700002800473700002800501700002300529700001700552856011500569 2017 eng d a1175-532600aA 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 complement0 anew species of iMiogryllusi Saussure 1877 and new record of iMio cDec-07-2017 a3610 v42911 aOrsini, Marcelo, Pinheiro1 aDa Costa, Maria Kátia Matiotti1 aSzinwelski, Neucir1 aMartins, Luciano, de P.1 aCorrêa, Robson, Crepes1 aTimm, Vitor Falchi1 aZefa, Edison uhttps://biotaxa.org/Zootaxa/issue/view/zootaxa.4291.2https://biotaxa.org/Zootaxa/article/view/zootaxa.4291.2.801540nas a2200229 4500008004100000245015200041210006900193300001000262490000700272520079700279653001401076653001901090653001701109653003401126653001501160653001701175100002201192700002001214700001601234700001901250856004101269 2007 eng d00aSouthern Cricket Eumodicogryllus bordigalensis (Orthoptera: Gryllidae) in the Czech Republic: new records and notes on the biology and stridulation0 aSouthern Cricket Eumodicogryllus bordigalensis Orthoptera Grylli a47-550 v763 aRecently, 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.10abionomics10aCzech Republic10adistribution10aEumodicogryllus bordigalensis10afaunistics10astridulation1 aHoluša, Jaroslav1 aKočárek, Petr1 aVlk, Robert1 aMarhoul, Pavel uhttps://bio.acousti.ca/sv/node/4781701621nas a2200181 4500008004100000245009300041210006900134300001000203490000800213520106600221653001701287653001301304653001601317653001601333100002701349700002201376856004101398 2008 eng d00aBioacoustic studies on some cricket species (Insecta:Orthoptera: Gryllidae) from Romania0 aBioacoustic studies on some cricket species InsectaOrthoptera Gr a57-640 vLIV3 a

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.

10abioacoustics10acrickets10aoscillogram10aspectrogram1 aIorgu, Ionuț, Ștefan1 aMustata, Gheorghe uhttps://bio.acousti.ca/sv/node/4779200408nas a2200121 4500008004100000245008500041210006900126260001400195300001000209490000700219100001900226856004100245 1951 eng d00aThe Seasonal Succession of Orthopteran Stridulation near Raleigh, North Carolina0 aSeasonal Succession of Orthopteran Stridulation near Raleigh Nor cJune 1951 a87-950 v671 aFulton, B., B. uhttps://bio.acousti.ca/sv/node/43232