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

Contribution of fish farming ponds to the production of immature Anopheles spp. in a malaria-endemic Amazonian town


, : Contribution of fish farming ponds to the production of immature Anopheles spp. in a malaria-endemic Amazonian town. Malaria Journal 14(): 452-452

In the past decade fish farming has become an important economic activity in the Occidental Brazilian Amazon, where the number of new fish farms is rapidly increasing. One of the primary concerns with this phenomenon is the contribution of fishponds to the maintenance and increase of the anopheline mosquito population, and the subsequent increase in human malaria burden. This study reports the results of a 2-year anopheline abundance survey in fishponds and natural water bodies in a malaria-endemic area in northwest Brazil. The objective of this study was to investigate the contribution of natural water bodies (rivers, streams, creeks, ponds, and puddles) and artificial fishponds as breeding sites for Anopheles spp. in Mâncio Lima, Acre and to investigate the effect of limnological and environmental variables on Anopheles spp. larval abundance. Natural water bodies and fishponds were sampled at eight different times over 2 years (early, mid and late rainy season, dry season) in the Amazonian town of Mâncio Lima, Acre. Anopheline larvae were collected with an entomological dipper, and physical, chemical and ecological characteristics of each water body were measured. Management practices of fishpond owners were ascertained with a systematic questionnaire. Fishponds were four times more infested with anopheline larvae than natural water bodies. Electrical conductivity and the distance to the nearest house were both significant inverse predictors of larval abundance in natural water bodies. The density of larvae in fishponds raised with increasing border vegetation. Fishponds owned by different farmers varied in the extent of anopheline larval infestation but ponds owned by the same individual had similar infestation patterns over time. Commercial fishponds were 1.7-times more infested with anopheline larvae compared to fishponds for family use. These results suggest that fishponds are important breeding sites for anopheline larvae, and that adequate management activities, such as removal of border vegetation could reduce the abundance of mosquito larvae, most importantly Anopheles darlingi.

PMID: 26573145

DOI: 10.1186/s12936-015-0947-1


Other references

Weisshaar, B.; Jenkins, G.I., 1998: Phenylpropanoid biosynthesis and its regulation. In the past year progress has been made in the manipulation of phenylpropanoid metabolism in plants, but several studies highlight gaps in the understanding of the biochemistry of these pathways. New components involved in transcriptional regulati...

Viets, K., 1907: Neue Hydrachniden. Bremen Abh Naturw Ver, 19 142-146

Kumar, R.; Qi, Y.; Matsumura, H.; Lovell, S.; Yao, H.; Battaile, K.P.; Im, W.; Moënne-Loccoz, P.; Rivera, M., 2016: Replacing Arginine 33 for Alanine in the Hemophore HasA from Pseudomonas aeruginosa Causes Closure of the H32 Loop in the Apo-Protein. Previous characterization of hemophores from Serratia marcescens (HasAs), Pseudomonas aeruginosa (HasAp), and Yersinia pestis (HasAyp) showed that hemin binds between two loops, where it is axially coordinated by H32 and Y75. The Y75 loop is struc...

Bowman J.R.; Kennett B.L.N., 1990: The effects of crustal velocity gradients on the propagation of Lg waves in the North Australia Craton. Record - Bureau of Mineral Resources, Geology and Geophysics 1990

Aguilar, C.M.; Rangel, E.F.; Garcia, L.; Fernandez, E.; Momen, H.; Grimaldi Filho, G.; D.V.rgas, Z., 1990: Zoonotic cutaneous leishmaniasis due to Leishmania (Viannia) braziliensis associated with domestic animals in Venezuela and Brazil. After outbreaks of cutaneous leishmaniasis in Solano State, Venezuela, 5% of the population had parasitized ulcers while after similar outbreaks in Mesquita, Rio de Janeiro State, Brazil, 9% had the disease. In these foci children, including some...

Buyukmihci, N.; Goehring-Harmon, F.; Marsh, R.F., 1982: Retinal degeneration during clinical scrapie encephalopathy in hamsters. Weanling hamsters were inoculated intracerebrally with brain suspensions from normal or scrapie-infected hamsters. A third group of uninoculated animal was fed cuprizone. Histologic and electron microscopic examination of the neural retinas and re...

Argenti, D.; Jensen, B.K.; Hensel, R.; Bordeaux, K.; Schleimer, R.; Bickel, C.; Heald, D., 2000: A mass balance study to evaluate the biotransformation and excretion of [14C]-triamcinolone acetonide following oral administration. The principle objective of this study was to characterize the absorption, metabolism, and disposition of orally administered [14C]-triamcinolone acetonide. Six healthy male subjects each received a single 100 microCi (approximately 800 micrograms)...

Lynn, L.A., 2015: Combined endothelial and epithelial barrier disruption of the colon may be a contributing factor to the Ebola sepsis-like syndrome. After an initial febrile viral syndrome, infection with Ebola virus often induces an explosive late "Ebola sepsis-like syndrome" which appears very similar to some phenotypes of bacterial sepsis and is commonly fatal. It is possible that...

Hayden Linda L.; Bush John H., 1987: Stratigraphy and depositional environment of Upper Cambrian Red Lion Formation, southwestern Montana. AAPG Bulletin 71(8): 1007

Fujiwara, T.; Yamada, M.; Miyamura, K.; Tomiya, Y.; Ishizawa, K.; Harigae, H.; Kameoka, J.; Minegishi, M.; Tsuchiya, S.; Sasaki, T., 2004: Fludarabine- and cyclophosphamide-based nonmyeloablative conditioning regimen for transplantation of chronic granulomatous disease: possible correlation with prolonged pure red cell aplasia. An 18-year-old patient with chronic granulomatous disease who had had at least 2 episodes of life-threatening Aspergillus pneumonia was treated with nonmyeloablative allogeneic stem cell transplantation (NSCT) from an HLA-identical and major ABO-i...