Eastern Lubber Grasshopper, Romalea microptera (Beauvois) (Orthoptera: Acrididae)

2012 ◽  
Keyword(s):  
Lubber Grasshopper

Information processing in the optic lobes of the lubber grasshopper

1970 ◽  
Vol 16 (4) ◽  
pp. 691-713 ◽  
Author(s):  
Robert B. Northrop ◽  
Ernest F. Guignon
Keyword(s):  
Information Processing ◽  
Optic Lobes ◽  
Lubber Grasshopper

Sequence analyses of two neuropeptides of the AKH/RPCH-family from the lubber grasshopper, Romalea microptera

Peptides ◽  
1988 ◽  
Vol 9 (4) ◽  
pp. 681-688 ◽  
Author(s):  
Gerd Gäde ◽  
Caroline Hilbich ◽  
Konrad Beyreuther ◽  
Kenneth L. Rinehart
Keyword(s):  
Sequence Analyses ◽  
Lubber Grasshopper

Acid-base status and spiracular control during discontinuous ventilation in grasshoppers

1995 ◽  
Vol 198 (8) ◽  
pp. 1755-1763 ◽  
Author(s):  
J Harrison ◽  
N Hadley ◽  
M Quinlan
Keyword(s):  
Gas Exchange ◽  
Respiratory Physiology ◽  
Acid Base ◽  
Threshold Levels ◽  
Lubber Grasshopper ◽  
Open Phase ◽  
Internal Co2 ◽  
Acid Base Status

Many insects ventilate discontinuously when quiescent, exhibiting prolonged periods during which little or no gas exchange occurs. We investigated the consequences of discontinuous ventilation (DV) on haemolymph acid­base status and tested whether spiracular opening during DV is due to changes in internal gas tensions in the western lubber grasshopper Taeniopoda eques. At 15 °C, resting T. eques exhibited interburst periods of about 40 min. During the interburst period, haemolymph PCO2 rose from 1.8 to 2.26 kPa, with minimal acidification of haemolymph. Animals in atmospheres in which PCO2 was 2 kPa or below continued to exhibit DV, while atmospheres in which PCO2 was 2.9 kPa or above caused cessation of DV. These data indicate that accumulation of internal CO2 to threshold levels between 2 and 2.9 kPa induces spiracular opening in grasshoppers. In contrast to the situation in lepidopteran pupae, variation in atmospheric PO2 had no effect on interburst duration. Relative to lepidopteran pupae, the internal PCO2 of grasshoppers during DV is threefold lower, the PCO2 required for triggering spiracular opening is also threefold lower, and the open phase spiracular conductance is at least tenfold higher, demonstrating that considerable diversity exists in these aspects of insect respiratory physiology.

scholarly journals Plasticity in the length of the ovulation-oviposition interval in the lubber grasshopper Romalea microptera

2005 ◽  
Vol 14 (1) ◽  
pp. 31-32 ◽  
Author(s):  
C. L. Mefferd ◽  
W. Hatch ◽  
R. L. Burries ◽  
D. W. Whitman
Keyword(s):  
Lubber Grasshopper

NOTE ON THE OCCURRENCE OF THE LUBBER GRASSHOPPER, BRACHYSTOLA MAGNA (ORTHOPTERA: ROMALEIDAE), IN NEWFOUNDLAND

1981 ◽  
Vol 113 (7) ◽  
pp. 659-660
Author(s):  
Ray F. Morris
Keyword(s):  
Food Production ◽  
First Record ◽  
Lubber Grasshopper ◽  
Paul Thompson

On 20 April 1978, Mr. Paul Thompson, Program Co-ordinator, Food Production & Inspection Branch, Agriculture Canada, found a dead grasshopper in a meadow near the Canadian National Steamship Terminal at Port aux Basques, Newfoundland. The insect was identified by Dr. D. K. McE. Kevan, Department of Entomology, Macdonald College, Ste. Anne de Bellevue, Quebec, as an adventive male lubber grasshopper, Brachystola magna (Girard). This is the first record of the lubber grasshopper in ~ewfoundland

Effects of growth rates on development to metamorphosis in the lubber grasshopper, Romalea microptera

Oecologia ◽  
2000 ◽  
Vol 125 (2) ◽  
pp. 162-169 ◽  
Author(s):  
Virginia L. Flanagin ◽  
Steven P. Haase ◽  
Steven A. Juliano
Keyword(s):  
Growth Rates ◽  
Lubber Grasshopper

Hemolymph ecdysteroids do not affect vitellogenesis in the lubber grasshopper

2002 ◽  
Vol 52 (1) ◽  
pp. 45-57 ◽  
Author(s):  
John D. Hatle ◽  
Steven A. Juliano ◽  
David W. Borst
Keyword(s):  
Lubber Grasshopper
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