geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The effect of temperature and photoperiod on blood-feeding and ovarian development in mosquitoes of the Culex pipiens complex


, : The effect of temperature and photoperiod on blood-feeding and ovarian development in mosquitoes of the Culex pipiens complex. American Journal of Tropical Medicine and Hygiene 17(1): 133-140

A study was made of the influence of temperature and photoperiod on blood-feeding and related processes in an anauto-genous strain of C. pipiens from West Lafayette, Indiana, and a strain of C. quinquefasciatus from Vero Beach, Florida. Pupae and adults were subjected to combinations of 4 photoperiods (10, 12, 14, and 16 hr.) and 4 temperatures (10[degree], 15[degree], 20[degree], and 25V). C. pipiens females showed reduced blood-feeding activity in response to a combination of short photoperiod and low temperature when incandescent illumination was used, but under conditions of fluorescent illumination, showed no such response to photoperiod[long dash]only a graded blood-feeding response to temperature. The blood-feeding response of C^ quinquefasciatus did not vary from one source of illumination to the other. In both cases, there was no response to photoperiod, and a threshold response to temperature. Gonotrophlc dissociation was found to occur sporadically in C. quinquefasciatus under low temperature conditions, irrespective of photoperiod. In C. pipiens, gonotrophic dissociation occurred in response to a combination of low temperature and short photoperiod, but only when post-feeding incubation temperatures were low. There was no significant difference in the amount of fat developed by blood-fed C. pipiens females showing gonotrophic dissociation and those maintained on a straight sugar diet. The amount of fat developed by blood-fed females showing normal ovarian development, however, was significantly less. The significance of these findings in regard to the ability of C. pipiens and C. quinquefasciatus to hibernate in nature was discussed, as well as the role of Culex mosquitoes as overwinter carriers of humanm viruses in the light of the demonstration of gonotrophic dissociation.

US$19.90

PMID: 5688903

DOI: 10.2307/1539978


Other references

Gordon, M.E., 1960: Unsolved problems in disorders of the gastrointestinal system. The biliary tract and pancreas. Connecticut Medicine 24: 432-436

Sharma, R.K.; Sachan, S.N., 1994: New hosts of rust fungi from Himachal Pradesh. Puccinia arthraxonis on Arthraxon prionodes and P. neyraudiae on Neyraudia arundinacea are new host records for India. New host records for Himachal Pradesh include P. cynodontis on Cynodon dactylon, P. invensuta on Phragmites karka, P. pogonather...

Chen, T.B., 1993: Application of NaHCO3/DTPA extractant-ICP spectrometry technique in soil test for availability of nutrient and heavy metals. Data for nutrients and heavy metal availability in calcareous soils measured by the NaCO3/DTPA ICP spectrometry technique and uptake by the above-ground part of wheat in pot experiments are tabulated. It was concluded that the technique was a reli...

Schalk, I.J.; Cunrath, O., 2016: An overview of the biological metal uptake pathways in Pseudomonas aeruginosa. NlmCategory="UNASSIGNED">Biological metal ions, including Co, Cu, Fe, Mg, Mn, Mo, Ni and Zn ions, are necessary for the survival and the growth of all microorganisms. Their biological functions are linked to their particular chemical...

Belpomme, D.; Irigaray, P.; Ossondo, M.; Vacque, D.; Martin, M., 2009: Prostate cancer as an environmental disease: an ecological study in the French Caribbean islands, Martinique and Guadeloupe. Using a transdisciplinary methodological approach we have conducted a multifactorial analysis in Martinique and Guadeloupe in order to elucidate the aetiology of prostate cancer. In 2002, world age standardized rates of prostate cancer were 152 ne...

Davis, R.L.; Syapin, P.J., 2005: Interactions of alcohol and nitric-oxide synthase in the brain. Nitric oxide (NO) is an important molecule associated with both physiological and pathological brain events. Three separate genes encode for nitric-oxide synthase (NOS), the rate-limiting enzyme in NO production, all of which are expressed within...

Freeland, A.P., 1975: Microfil angiography: a demonstration of the microvasculature of the larynx with reference to tumor spread. The microvasculature of both the human and monkey larynx is described. The recognized patterns of growth and spread of laryngeal carcinoma are discussed in relation to the microvasculature. The direction of enlargement of these tumors may be influ...

Elias, A., 2000: Effects of the sources of energy on some of the final rumen fermentation products. Four Friesian calves of approximately six months old and weighing an average of 170 kg, were used to study three sources of energy: concentrate, poor quality hay and molasses. There was a significant difference (P<0.001) in the rumen fermentati...

Barron, J.; Fallis, L.S., 1964: Non-Operative Treatment Of Internal Hemorrhoids. It has been estimated that about one-half of the adult population has internal hemorrhoids. While the majority of these experience relatively few symptoms, a considerable number continue to suffer discomfort because of unwillingness or inability t...

Villarta, R.L.; Suleiman, A.A.; Guilbault, G.G., 1993: Amperometric enzyme electrode for the determination of aspartame in diet food. An amperometric enzyme electrode for the determination of aspartame in protein-free samples has been constructed. It is based on the coimmobilization of an aspartame-hydrolyzing enzyme, aspartate aminotransferase, and glutamate oxidase on an Immob...