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Posts Tagged: Walter Leal

Ground-Breaking Research: Sex Pheromone of Asian Citrus Psyllid Discovered

This is the Asian citrus psyllid, a mottled brown insect about 3 to 4 millimeters long, or about the size of an aphid. Widespread throughout Southern California, it is now found in 26 of the state's 58 counties. (CDFA Photo)

The Asian citrus psyllid, the most devastating threat to the worldwide citrus industry, may have met its match. In a ground-breaking discovery encompassing six years of research, an international team of scientists led by UC Davis chemical ecologist...

This is the Asian citrus psyllid, a mottled brown insect about 3 to 4 millimeters long, or about the size of an aphid. Widespread throughout Southern California, it is now found in 26 of the state's 58 counties. (CDFA Photo)
This is the Asian citrus psyllid, a mottled brown insect about 3 to 4 millimeters long, or about the size of an aphid. Widespread throughout Southern California, it is now found in 26 of the state's 58 counties. (CDFA Photo)

This is the Asian citrus psyllid, a mottled brown insect about 3 to 4 millimeters long, or about the size of an aphid. Widespread throughout Southern California, it is now found in 26 of the state's 58 counties. (CDFA Photo)

UC Davis chemical ecologist Walter Leal has just discovered the sex pheromone of the Asian citrus psyillid. He has also discovered the sex pheromones of a number of other insects, including moths (background). (Photo by Kathy Keatley Garvey)
UC Davis chemical ecologist Walter Leal has just discovered the sex pheromone of the Asian citrus psyillid. He has also discovered the sex pheromones of a number of other insects, including moths (background). (Photo by Kathy Keatley Garvey)

UC Davis chemical ecologist Walter Leal has just discovered the sex pheromone of the Asian citrus psyillid. He has also discovered the sex pheromones of a number of other insects, including moths (background). (Photo by Kathy Keatley Garvey)

UC Davis chemical ecologist Walter Leal (left) talks with FUNDECITRUS director Juliano Ayres on Dec. 5 at the 10th Annual Meeting of Chemical Ecology in Sao Paulo.
UC Davis chemical ecologist Walter Leal (left) talks with FUNDECITRUS director Juliano Ayres on Dec. 5 at the 10th Annual Meeting of Chemical Ecology in Sao Paulo.

UC Davis chemical ecologist Walter Leal (left) talks with FUNDECITRUS director Juliano Ayres on Dec. 5 at the 10th Annual Meeting of Chemical Ecology in Sao Paulo.

Bodil Cass and 'The Curious Case of Katydids in California Citrus'

Postdoctoral researcher Bodil Cass will speak on

What an interesting and innovative title: "The Ecoinformatics and the Curious Case of Katydids in California Citrus." That's what postdoctoral scholar Bodil Cass of the Jay Rosenheim lab, University of California, Davis, will discuss at her seminar from...

Postdoctoral researcher Bodil Cass will speak on
Postdoctoral researcher Bodil Cass will speak on "The Ecoinformatics and the Curious Case of Katydids in California Citrus" at a seminar on Oct. 25 at UC Davis. Here's a photo of the fork-tailed katydid, Scudderia furcata, that she studies. (Photo by Bodil Cass)

Postdoctoral researcher Bodil Cass will speak on "The Ecoinformatics and the Curious Case of Katydids in California Citrus" at a seminar on Oct. 25 at UC Davis. Here's a photo of the fork-tailed katydid, Scudderia furcata, that she studies. (Photo by Bodil Cass)

In this image, fork-tailed katydids are all over citrus as part of a research project by postdoctoral scholar Bodil Cass of the Jay Rosenheim, UC Davis. (Photo by Bodil Cass)
In this image, fork-tailed katydids are all over citrus as part of a research project by postdoctoral scholar Bodil Cass of the Jay Rosenheim, UC Davis. (Photo by Bodil Cass)

In this image, fork-tailed katydids are all over citrus as part of a research project by postdoctoral scholar Bodil Cass of the Jay Rosenheim, UC Davis. (Photo by Bodil Cass)

Close-up of a fork-tailed katydid. (Photo by Kathy Keatley Garvey)
Close-up of a fork-tailed katydid. (Photo by Kathy Keatley Garvey)

Close-up of a fork-tailed katydid. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, October 24, 2017 at 3:22 PM

UC Davis Researcher: What Repellents and Doses Are Best to Prevent Zika Virus

Working on zika-virus research are UC Davis chemical ecologist Walter Leal (foreground) and colleagues and co-authors Rosangela Barbosa (center) and graduate student Gabriel Faierstein of FIOCRUZ-PE, Recife, Brazil.

If you're traveling to—or living in--a Zika virus-infested area, it's far better to use DEET rather than Picaridin and to use higher, rather than lower, doses of DEET because lower doses do not work well with older mosquitoes, newly published...

Working on zika-virus research are UC Davis chemical ecologist Walter Leal (foreground) and colleagues and co-authors Rosangela Barbosa (center) and graduate student Gabriel Faierstein of FIOCRUZ-PE, Recife, Brazil.
Working on zika-virus research are UC Davis chemical ecologist Walter Leal (foreground) and colleagues and co-authors Rosangela Barbosa (center) and graduate student Gabriel Faierstein of FIOCRUZ-PE, Recife, Brazil.

Working on zika-virus research are UC Davis chemical ecologist Walter Leal (foreground) and colleagues and co-authors Rosangela Barbosa (center) and graduate student Gabriel Faierstein of FIOCRUZ-PE, Recife, Brazil.

The southern house mosquito, Culex quinquefasciatus, can also transmit the Zika virus, but the primary mosquito is the yellow fever mosquito, Aedes aegypti. (Photo by Kathy Keatley Garvey)
The southern house mosquito, Culex quinquefasciatus, can also transmit the Zika virus, but the primary mosquito is the yellow fever mosquito, Aedes aegypti. (Photo by Kathy Keatley Garvey)

The southern house mosquito, Culex quinquefasciatus, can also transmit the Zika virus, but the primary mosquito is the yellow fever mosquito, Aedes aegypti. (Photo by Kathy Keatley Garvey)

Posted on Thursday, February 16, 2017 at 2:00 AM

Zeroing in on the Zika Virus at ICE 2016

Nobel Laureate Peter Agre (center), a keynote speaker at ICE 2016, is flanked by the ICE 2016 co-chairs,  Walter Leal (left) of UC Davis, and Alvin Simmons of the USDA/ARS, based in Charleston, S.C.

The yellow fever mosquito, Aedes aegypti, probably isn't the only mosquito that transmits the Zika virus. That's what UC Davis chemical ecologist Walter Leal, co-chair of the International Congress of Entomology (ICE 2016) recently held in Orlando,...

Nobel Laureate Peter Agre (center), a keynote speaker at ICE 2016, is flanked by the ICE 2016 co-chairs,  Walter Leal (left) of UC Davis, and Alvin Simmons of the USDA/ARS, based in Charleston, S.C.
Nobel Laureate Peter Agre (center), a keynote speaker at ICE 2016, is flanked by the ICE 2016 co-chairs, Walter Leal (left) of UC Davis, and Alvin Simmons of the USDA/ARS, based in Charleston, S.C.

Nobel Laureate Peter Agre (center), a keynote speaker at ICE 2016, is flanked by the ICE 2016 co-chairs, Walter Leal (left) of UC Davis, and Alvin Simmons of the USDA/ARS, based in Charleston, S.C.

ICE 2016 in action: From left are May Berenbaum, president of the Entomological Society of America; and ICE 2016 co-chairs Walter Leal (center) and Alvin Simmons.
ICE 2016 in action: From left are May Berenbaum, president of the Entomological Society of America; and ICE 2016 co-chairs Walter Leal (center) and Alvin Simmons.

ICE 2016 in action: From left are May Berenbaum, president of the Entomological Society of America; and ICE 2016 co-chairs Walter Leal (center) and Alvin Simmons.

Posted on Thursday, October 20, 2016 at 3:55 PM

Breaking News: Zika Virus Found in Wild-Caught Culex

Culex quinquefasciatus, the southern house mosquito,is known for transmitting the West Nile virus, but now the Zika virus has been detected in wild-caught C. quinquefasciatus in Recife, Brazil, the epicenter of the Zika epidemic. (Photo by Kathy Keatley Garvey)

The news is out.  It's what they've been searching for. In a groundbreaking discovery, a scientific team of Brazilians and Brazilian-born chemical ecologist Walter Leal of the University of California, Davis, has announced that the Zika virus has...

Culex quinquefasciatus, the southern house mosquito,is known for transmitting the West Nile virus, but now the Zika virus has been detected in wild-caught C. quinquefasciatus in Recife, Brazil, the epicenter of the Zika epidemic. (Photo by Kathy Keatley Garvey)
Culex quinquefasciatus, the southern house mosquito,is known for transmitting the West Nile virus, but now the Zika virus has been detected in wild-caught C. quinquefasciatus in Recife, Brazil, the epicenter of the Zika epidemic. (Photo by Kathy Keatley Garvey)

Culex quinquefasciatus, the southern house mosquito,is known for transmitting the West Nile virus, but now the Zika virus has been detected in wild-caught C. quinquefasciatus in Recife, Brazil, the epicenter of the Zika epidemic. (Photo by Kathy Keatley Garvey)

UC Davis chemical ecologist and mosquito researcher Walter Leal (front), confers with Constancia Ayres (far right, in black) and Rosângela Barbosa (center), faculty members in the Department of Entomology, Fiocruz-Recife.  Both are Leal colloborators.
UC Davis chemical ecologist and mosquito researcher Walter Leal (front), confers with Constancia Ayres (far right, in black) and Rosângela Barbosa (center), faculty members in the Department of Entomology, Fiocruz-Recife. Both are Leal colloborators.

UC Davis chemical ecologist and mosquito researcher Walter Leal (front), confers with Constancia Ayres (far right, in black) and Rosângela Barbosa (center), faculty members in the Department of Entomology, Fiocruz-Recife. Both are Leal colloborators.

Posted on Friday, July 22, 2016 at 2:26 PM

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