Results 11 to 20 of about 139 (102)

Rhyzobius lophanthae Behavior is Influenced by Cycad Plant Age, Providing Odor Samples in a Y-tube Olfactometer [PDF]

Insects, 2018
The scale predator Rhyzobius lophanthae Blaisdell was introduced to Guam and Rota to control invasive Aulacaspis yasumatsui Takagi armored scale infestations on the native Cycas micronesica K.D. Hill populations.
Thomas E. Marler, Paris N. Marler
doaj   +2 more sources

Cycas micronesica Megastrobilus Traits Respond to Chronic Herbivory by Aulacaspis yasumatsui

Ecologies, 2023
Aulacaspis yasumatsui Takagi invaded Guam in 2003 and caused the widespread mortality of the indigenous Cycas micronesica K.D. Hill population. The regeneration of the surviving tree population continues to be constrained 20 years later, and a look at ...
Thomas E. Marler, L. Irene Terry
doaj   +2 more sources

Unraveling an extreme AT-rich and complex mitochondrial genome: the first complete mitogenome of the species-rich family Diaspididae (Hemiptera, Coccomorpha) and its evolutionary implications [PDF]

ZooKeys
The assembly of insect mitochondrial genomes remains challenging in certain taxa due to extreme AT biases and long repetitive regions. The family Diaspididae (Hemiptera: Coccomorpha) exemplifies this difficulty; despite more than 2,700 described species ...
Jun Deng, Lin Zhang, Wentao Ma, Hui Xiao, Congcong Lu, Xiaolei Huang   +5 more
doaj   +4 more sources

Chemical ecology of symbioses in cycads, an ancient plant lineage. [PDF]

New Phytol
Summary Cycads are an ancient lineage of gymnosperms that maintain a plethora of symbiotic associations from across the tree of life. They have myriad morphological, structural, physiological, chemical, and behavioral adaptations that position them as a unique system to study the evolution, ecology, and mechanism of symbiosis.
Salzman S, Bustos-Díaz ED, Whitaker MRL, Sierra AM, Cibrián-Jaramillo A, Barona-Gómez F, Villarreal Aguilar JC.   +6 more
europepmc   +2 more sources

Three invasive insects alter Cycas micronesica leaf chemistry and predict changes in biogeochemical cycling [PDF]

Communicative & Integrative Biology, 2016
Leaf litter chemical traits were measured for Cycas micronesica plants in Guam following leaf herbivory by the scale Aulacaspis yasumatsui, the butterfly Chilades pandava caterpillar, or the leaf miner Erechthias sp. to determine the influence of the non-
Thomas E. Marler, Nirmala Dongol
doaj   +2 more sources

Temperature-Dependent Development of the Cycad Aulacaspis Scale, Aulacaspis yasumatsui (Hemiptera: Diaspididae)

Florida Entomologist, 2009
ABSTRACT Egg duration period, immature development time, and pre-oviposition period of the cycad aulacaspis scale, Aulacaspis yasumatsui Takagi, were measured at 9 constant temperatures in the laboratory. Egg duration period ranged from 15 d at 20°C to 7 d at 30°C. First instar development time was 30 d at 18°C but only 4 d at 35°C.
Rodrigo Diaz, Ronald Cave
exaly   +2 more sources

Host specificity of parasitoids (Encyrtidae) toward armored scale insects (Diaspididae): Untangling the effect of cryptic species on quantitative food webs. [PDF]

Ecol Evol, 2018
A high degree of cryptic species in host–parasitoid systems refines the true network structure and may cause us overestimating the stability of these interaction webs. Abstract Host specificity of parasitoids may be measured by various specialization indices to assess the variation of interaction strength among species and the structure of the wider ...
Qin YG, Zhou QS, Yu F, Wang XB, Wei JF, Zhu CD, Zhang YZ, Vogler AP.   +7 more
europepmc   +2 more sources

First Report of Aulacaspis yasumatsui (Hemiptera: Diaspididae) in Africa (Ivory Coast), and Update on Distribution

Florida Entomologist, 2007
Cycas species and their relatives have been a staple in the Florida landscapes for 50 years. In the last 25 to 30 years the popularity of these plants in the landscape has increased worldwide. In 1996, a devastating pest to cycads was intro duced into Florida, the cycad Aulacaspis scale (Aulacaspis yasumatsui Takagi). This insect has since plagued both
Jean-François Germain
exaly   +2 more sources

Aulacaspis yasumatsui (Hemiptera: Sternorrhyncha: Diaspididae), a Scale Insect Pest of Cycads Recently Introduced into Florida

Florida Entomologist, 1999
Observations were conducted in southern Florida on Aulacaspis yasumatsui Takagi (Hemiptera: Sternorrhyncha: Diaspididae), a recently introduced armored scale insect native to Southeast Asia. The insect's host plants, exclusively cycads, were identified in the following genera: Cycas (Cycadaceae); Dioon, Encephalartos, Microcycas, (Zamiaceae), and ...
Howard, Forrest W., Hamon, Avas, Mclaughlin, Michael, Weissling, Thomas J., Yang, Si-Lin   +4 more
exaly   +2 more sources

Biological invasion by the cycad‐specific scale pest Aulacaspis yasumatsui (Diaspididae) into Cycas revoluta (Cycadaceae) populations on Amami‐Oshima and Okinawa‐jima, Japan

Plant Species Biology, Volume 40, Issue 4, Page 280-291, July 2025.
This article details the invasion of cycad aulacaspis scale into the islands of Okinawa‐Jima and Amami‐Oshima. Several recommendations are proposed in this article by members of the IUCN cycad specialist group and experts in the biological control of this scale insect.
Benjamin E. Deloso, José Said Gutiérrez‐Ortega, Jui‐Tse Chang, Yasuko Ito‐Inaba, Anders J. Lindström, L. Irene Terry, John Donaldson, William Tang, Ronald D. Cave, Jorge Antonio Gómez‐Díaz, Vanessa M. Handley, M. Patrick Griffith, Thomas E. Marler   +12 more
wiley   +2 more sources