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International News from the Center

  • Professor Gaugler and Dr. Wang recently visited China where they delivered invited lectures on their research. Local mosquito control personnel in Daqing displayed their equipment  and a discussion followed focused on the unique management issues assoc
    282px-China_Heilongjiang_Daqing.svg[1]

    Daqing City, China, from Wikipedia

    iated with a city surrounded by many thousands of acres of wetlands. In Beijing, they met with researchers at the People’s Liberation Army’s Center for Vector Biology, the most important medical entomology unit in China and an extremely impressive facility. Several days were also devoted to collections in Outer Mongolia at the invitation of the Chinese Academy of Sciences.
  • Plans are progressing for a U.S.-Iran meeting on vector biology and control, likely to be held in early 2017 near Tehran. CVB member Dr. Ary Faraji is leading this initiative, which follows recent visits to Iran by Drs. Faraji, Goudarz Molaei (Connecticut AES) and Professor Gaugler. Dr. Faraji will deliver a presentation at AMCA on Iranian mosquito research and control efforts.
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Global Reach

Rutger’s motto of “Jersey Roots, Global Reach” will be exemplified by a series of lectures to be given in Iran by Professor Randy Gaugler and Dr. Ari Faraji. On the 24th of May, the two travel to the capital of Iran and the University of Tehran’s medical school and the Department of Medical Entomology to present several lectures on new technology and frontiers in mosquito and nematode research.  They will also travel to lecture at Ferdowsi University of Mashhad and later to Shiraz University in the town of the same name.

In reciprocity, the Center for Vector Biology welcomes the new addition of a visiting graduate student from Iran, Hana Allahverdi. Hana will be studying “zombie mosquitoes,” a topic to be further discussed in a future blog.global

Pennsylvania Vector Control Association (PVCA) 40th Anniversary

PVCA Logo

Scott Crans, Tadhgh Rainey and Robert Jordan were invited speakers at the 40th anniversary meeting of the Pennsylvania Vector Control Association meeting held in State College PA. Scott presented a paper reviewing the bionomics of Northeastern Psorophora, the importance of maintaining local collection records along with some encouragement to go out and find the less common species present in our region. Tadhgh reviewed the Hunterdon County Mosquito and Vector Control Program services highlighting his work with John Wallace of Millersville University and the most recent black fly nuisance problems experienced across much of Northwestern NJ this past summer. Robert Jordan presented an excellent paper addressing the expanding role of vector control agencies in reducing tick-borne disease. The 40th anniversary meeting was well attended and packed with informative presentations on a variety of topics. From the New Jersey perspective, hearing what is happening in the vector control arena at Pennsylvania State University, East Stroudsburg University of Pennsylvania, Indiana University of Pennsylvania, Millersville University, Muhlenberg College, Pennsylvania Game Commission and Pennsylvania Department of Environmental Protection was impressive. If you have a chance to participate in the future, this meeting is well worth the time and expense.

More on the Vector Surveillance front in New Jersey

The regular weekly reports for the Vector Surveillance program has stopped, but the labs at the State and Cape May Division of Mosquito Control are finishing up their analyses of samples. This report will summarize the results to date. You can find the weekly reports on our webpages: http://vectorbio.rutgers.edu/reports/vector/

For Eastern Equine Encephalitis (EEE), there were 36 positive pools, 35 in Culiseta melanura, and 1 positive in Culex salinarius. The last positive pool came in Cs. melanura collected at the Centerton resting box site at the end of October. This has been an active year for this significant virus, with four horses reported infected for this year. All four horses has either uncertain or no vaccination history. This is very unfortunate because horse cases can be virtually eliminated if horses are given the appropriate vaccines in the correct timetable. For vaccination schedules recommended by the American Association of Equine Practices, see: http://www.aaep.org/vaccination_guidelines.htm

nov5

So, the virus remained within the enzootic vector, Cs. melanura, for the most part this year. Yet we still had 4 horse cases. When horse cases occur, the mosquito control agencies are very quick to increase monitoring around the site, and did not find other infected potential bridge vectors. This points to the possibility of Cs. melanura acting as the bridge vector, something that data from the northeastern US has suggested previously. (from infection potential:  Armstrong, P. M., & Andreadis, T. G. (2010). Eastern equine encephalitis virus in mosquitoes and their role as bridge vectors. Emerging Infectious Diseases, 16(12), 1869–74. doi:10.3201/eid1612.100640 and from bloodmeal potential: Molaei, G., Oliver, J., Andreadis, T. G., Armstrong, P. M., & Howard, J. J. (2006). Molecular identification of blood-meal sources in Culiseta melanura and Culiseta morsitans from an endemic focus of eastern equine encephalitis virus in New York. The American Journal of Tropical Medicine and Hygiene, 75(6), 1140–7. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/17172382.) The first paper also suggests that even though Cs. melanura may take mammalian meals in small percentages, their higher titer values, particularly in the absence of other positive vectors, make them a candidate for transmission to horse and/or humans.

With WNV, there were four more positive pools, all in Culex species (one in Culex restuans and 3 in Mixed Culex pools):

Nov5-2

This has not been a really unusual year with regard to WNV infections. More Ae. albopictus pools showed up positive but this is likely due to the inclusion of testing albopictus for Dengue and Chikungunya and the subsequent increased effort by the mosquito control agencies.  To date, there have been seven human cases and no reported horse cases. 18 out of 112 birds tested were positive, and mostly corvids. A final report will be posted when available.

Tigers finding hidden tigers

SpringStar (Seattle, WA) visited CVB 28-29 October for meetings to discuss their Option to License for the center’s pyriproxyfen autodisemmination station. Topics included research progress review, station design, formulation, ease of manufacturing and EPA registration. If all goes well, the station will become a commercial product in 2016. The SpringStar representatives also stopped at Mercer County Mosquito Control to visit the field test plots with CVB member and collaborator Dr. Isik Unlu.

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Top Row: Drs Randy Gaugler, Lisa Reed, Kshitil Chandel, Yi Wang, Michael Banfield (SpringStar) Bottom Row: (SpringStar), Isik Unlu, Elizabeth Schaafsma (SpringStar), Devi Suman.

For more information on autodisemmination and using mosquitoes to deliver control agents, see the publication Wang Y, Suman DS, Bertrand J, Dong L and R Gaugler. 2013 Dual-treatment autodissemination station with enhanced transfer of an insect growth regulator to mosquito oviposition sites (238k PDF) Pest Manag Sci: DOI 10.1002/ps.3702.

 

 

The first post to Rutgers Center for Vector Biology’s new blog.

Welcome and we hope to provide you with information and ideas about vectors and the diseases they may carry. Our emphasis may start out locally in New Jersey, but we like to think about global impacts as well.

Today the last NJ adult mosquito surveillance report will go online: http://vectorbio.rutgers.edu/surveillance.php

Recently, our weather has become much cooler and with shortening days, mosquito activity has dropped considerably. This season is a couple of weeks shorter than the previous several years. Follow the above link to see the most recent report, or you can access reports from years past.