Changing responses to temperature and moisture of diapausing and developing eggs of Allonemobius fasciatus (Orthoptera: Gryllidae)

1987 ◽  
Vol 33 (9) ◽  
pp. 635-641 ◽  
Author(s):  
Seiji Tanaka
Keyword(s):  
Allonemobius Fasciatus

Effect of nuptial feeding on the mating behaviour of female ground crickets

1985 ◽  
Vol 63 (1) ◽  
pp. 207-208 ◽  
Author(s):  
Michael J. Bidochka ◽  
William A. Snedden
Keyword(s):  
Mating Behaviour ◽  
Nuptial Feeding ◽  
Copula Duration ◽  
The Mean ◽  
Allonemobius Fasciatus

Female striped ground crickets, Allonemobius fasciatus, feed on male tibial glands while in copula. This behaviour has been interpreted as nuptial feeding and a method by which copula duration is increased. Females terminated copulation significantly earlier with males whose tibial spurs were covered with paint, as opposed to males with exposed tibial spurs. However, the number of successful matings was not reduced in those males whose tibial spurs were covered. The mean duration of spermatophore attachment did not differ between females mated to different experimental groups.

THE NEMOBIINAE (ORTHOPTERA: GRYLLIDAE) OF CANADA

1973 ◽  
Vol 105 (4) ◽  
pp. 623-645 ◽  
Author(s):  
V. R. Vickery ◽  
D. E. Johnstone
Keyword(s):  
Male Genitalia ◽  
Key To Species ◽  
Distribution Maps ◽  
Allonemobius Fasciatus

AbstractSix species of small crickets of the subfamily Nemobiinae are found in Canada. These are Allonemobius fasciatus (DeGeer), A. allardi (Alexander & Thomas), A. g. griseus (E. M. Walker), A. maculatus (Blatchley), Neonemobius palustris (Blatchley), and Eunemobius c. carolinus (Scudder). Synonymy is given and all distinctive taxonomic characters such as hind tibiae, concealed male genitalia, female ovipositors, male stridulatory veins, and audiospectrograms of stridulation are described and illustrated. A key to species is given and distribution maps are included.

Genetic linkage maps of the ground crickets Allonemobius fasciatus and Allonemobius socius using RAPD and allozyme markers

Genome ◽  
1998 ◽  
Vol 41 (6) ◽  
pp. 841-847 ◽  
Author(s):  
Jiming Chu ◽  
Daniel J Howard
Keyword(s):  
Hybrid Zone ◽  
Genetic Linkage ◽  
Sex Chromosome ◽  
Average Distance ◽  
Linkage Maps ◽  
Eastern United States ◽  
Linkage Groups ◽  
Genetic Linkage Maps ◽  
Allonemobius Fasciatus ◽  
Allonemobius Socius

The ground crickets, Allonemobius fasciatus and A. socius are sister species and form a mosaic hybrid zone in the eastern United States. In this study, we developed RAPD markers and constructed genetic linkage maps for the two species, as a first step toward mapping quantitative trait loci that control conspecific sperm precedence. The A. fasciatus map consists of 25 markers mapped to 8 linkage groups, spanning 400.1 contiguous centiMorgans (cM). The average distance between two framework markers is 23.5 cM. The A. socius map consists of 20 markers mapped to 6 linkage groups, spanning 400.5 contiguous cM. The average distance between two framework markers is 30.4 cM. A sex chromosome was identified in the A. socius map. These are the first reported genetic linkage maps for Orthoptera.Key words: Allonemobius, allozyme, cricket, hybrid zone, linkage maps, RAPD.

Bet Hedging and the Diapause Strategies of the Cricket Allonemobius Fasciatus

Ecology ◽  
1993 ◽  
Vol 74 (4) ◽  
pp. 1129-1135 ◽  
Author(s):  
Michael J. Bradford ◽  
Derek A. Roff
Keyword(s):  
Bet Hedging ◽  
Allonemobius Fasciatus

Altitudinal adaptation of the life cycle in Allonemobius fasciatus DeGeer (Orthoptera: Gryllidae)

1983 ◽  
Vol 61 (9) ◽  
pp. 1986-1990 ◽  
Author(s):  
Seiji Tanaka ◽  
Victor J. Brookes
Keyword(s):  
Life Cycle ◽  
Genetic Difference ◽  
Adult Emergence ◽  
Growing Season ◽  
Embryonic Diapause ◽  
Nymphal Stage ◽  
Nymphal Development ◽  
Hatching Time ◽  
Photoperiodic Regulation ◽  
Allonemobius Fasciatus

Allonemobius fasciatus DeGeer maintains a univoltine life cycle with an embryonic diapause over an altitudinal gradient of as large as 1100 m. Hatching time differs by more than 1.5 months between the highest and lowest altitudes studied. Little or no genetic difference was detected between populations from different altitudes when physiological traits such as diapause intensity, postdiapause development, and nymphal development were compared in the laboratory. Photoperiod influenced the duration of the nymphal stage and the number of instars, compensating for the shorter growing season at higher elevations. This photoperiodic regulation of nymphal development would also serve as a mechanism synchronizing adult emergence within a population of this species.

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