02813nas a2200169 4500008004100000245016700041210006900208260001600277520221000293653001302503653001402516653001602530653001602546653001302562100002502575856004302600 2018 eng d00aThe life cycle of a southern hemisphere cricket Bobilla poene (Orthoptera: Gryllidae) and variation in its size, sex ratio and egg production0 alife cycle of a southern hemisphere cricket iBobilla poenei Orth cJun-11-20193 a

Life cycles of southern hemisphere crickets are poorly studied compared with their northern hemisphere counterparts. The life cycle and associated traits of Bobilla poene Otte & Alexander (1983) (Nemobiinae) were investigated based on pitfall trap samples collected monthly for 12 months at lowland (320 m) and montane (800 m) locations in Tasmania, the southernmost state of Australia (42–43°S). Unlike most other Gryllidae, B. poene has a semivoltine life cycle overwintering as an egg during its first winter followed by nymphs and then adults in subsequent winters. There was some evidence to suggest that a small proportion of the populations completed development from egg to adult within 1 year (i.e. univoltine). The proportion of adult females with eggs present was high (>70%) for all months except December when there was a greater proportion of adult females with no eggs present. Mean number of eggs per female was largest from mid‐summer to early autumn. Spermatheca diameter increased in size from December to May. Aspects of B. poene life cycle differed between locations. At the lowland location, most crickets (92%) overwintered as A3 instars and adults, whereas at the montane location, most crickets (87%) overwintered as A3 and A4 instars. Head width, femur length, body length and spermatheca diameter were larger at the lowland location than at the montane location, but forewing and ovipositor lengths did not differ in size between locations. A small proportion (1.2%) of montane adult crickets was long winged, and none were recorded at the lowland location. Sex ratios were generally similar at both locations and varied throughout the year. For most of the year, the sex ratios for the A2, A1 and adult stages were female biased. During spring and early summer, sex ratios were male biased or close to parity. This variation in sex ratios is consistent with the concepts of protandry and adaptive growth, with males maturing earlier than females and at a smaller size. The range of climates and altitudes available in Tasmania, where B. poene occurs widely, offers opportunities for further investigation of life cycle variation within this species.

10aaltitude10aprotandry10asemivoltine10aspermatheca10aTasmania1 aDriessen, Michael, M uhttp://doi.wiley.com/10.1111/aen.1237701626nas a2200181 4500008004100000245009300041210006900134300001000203490000800213520106600221653001701287653001301304653001601317653001601333100002701349700002201376856004601398 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/zh-hans/node/4779200413nas a2200121 4500008004100000245008500041210006900126260001400195300001000209490000700219100001900226856004600245 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/zh-hans/node/4323200396nas a2200097 4500008004100000245009500041210006900136300001200205490000700217856007400224 1957 eng d00aThe song relationships of four species of ground crickets (Othoptera: Gryllidae: Nemobius)0 asong relationships of four species of ground crickets Othoptera  a153-1630 v57 uhttps://kb.osu.edu/dspace/bitstream/handle/1811/4440/1/V57N03_153.pdf