Effects of Attack Time on the Development and Reproduction of the Oak Borer, Platypus quercivorus (Murayama).

Summary Two new Neomisticius species, typologically and phylogenetically close to each other, are described and illustrated from dead Quercus trees and an ambrosia beetle, Platypus quercivorus. The two species share some stylet morphological characteristics, namely, they both possess a long conus occupying more than half of the total stylet length, a long crustaformeria composed of more than 160 cells (eight rows of more than 20 cells each), and a short and broad female tail with a digitate tip. They are distinguished from each other by N. variabilis n. sp. having a wide, spindle-shaped male bursa with a blunt terminus and N. platypi n. sp. having an oval bursa with a rounded terminus. In addition, the males and females of both species have three large rectal glands and the posterior end of the male testis (distal end of the vas deferens) bears three cells that seemingly function as a valve between the vas deferens and the cloacal tube. These characteristics have not been reported in other tylenchids. Currently, the genus contains only three species: the two new species and N. rhizomorphoides, which has a normal stylet with a short conus, a short crustaformeria, and lacks rectal glands and valve cells in the vas deferens. Therefore, the two new species are readily distinguished from N. rhizomorphoides and, based on the previous definition, may even represent a new genus. However, considering their phylogenetic closeness and biological similarities (e.g., association with ambrosia beetles), the generic definition of Neomisticius was emended to include these new species.

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Measuring the Flight Ability of the Ambrosia Beetle, Platypus Quercivorus (Murayama), Using a Low-Cost, Small, and Easily Constructed Flight Mill

Journal of Visualized Experiments ◽

10.3791/57468 ◽

2018 ◽

Cited By ~ 1

Author(s):

Ryuichi Okada ◽

Duy Long Pham ◽

Yasuto Ito ◽

Michimasa Yamasaki ◽

Hidetoshi Ikeno

Keyword(s):

Low Cost ◽

Ambrosia Beetle ◽

Flight Ability ◽

Platypus Quercivorus ◽

Flight Mill

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Evaluating attack time expenses for network security alert causal correlation

2008 11th IEEE Singapore International Conference on Communication Systems ◽

10.1109/iccs.2008.4737374 ◽

2008 ◽

Author(s):

Shaojun Zhang ◽

Jianhua Li ◽

Xiuzhen Chen ◽

Lei Fan

Keyword(s):

Network Security ◽

Attack Time

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Study regarding the main ways of gaining ball possession in Romanian basketball

Timisoara Physical Education and Rehabilitation Journal ◽

10.2478/tperj-2020-0005 ◽

2020 ◽

Vol 13 (24) ◽

pp. 30-34

Author(s):

Dan Ionescu ◽

Mihai Alexandru ◽

Gabriela Gui-Bachner ◽

Alin Molcuţ

Keyword(s):

Statistical Analysis ◽

Graphical Representation ◽

Mean Amplitude ◽

Arithmetic Mean ◽

Working Hypothesis ◽

Attack Time

AbstractIntroduction: In basketball, ball possession can begin and end in many different ways, for example, ball possession may begin with an out-of-bounds, a stolen ball, a rebound etc, and may also end with a throw, a turnover or when the attack time has expired.Aim: Starting from the working hypothesis that the backboard rebounds represent an important factor in gaining ball possession, we have proposed to identify and analyze the game parameters recorded in the national basketball leagues.Material and methods: The theoretical documentation included explaining, based on specialized literature, terms related to ball possession. Also, in order to accomplish the purposes of this research, we have used statistical analysis (possession, arithmetic mean, amplitude) and graphical representation. This study focused on all teams participating in the 2019-2020 season of the National Basketball Leagues (16 men’s and 13 women’s teams).Results: Following the analysis and centralization of the game parameters from the 146 games played in the men’s league and 144 games in the women’s league, we have identified the main ways of gaining ball possession.Conclusions: Backboard rebounds represent the main way of gaining ball possession (which confirms the hypothesis).

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Potential impact of global warming on deciduous oak dieback caused by ambrosia fungus Raffaelea sp. carried by ambrosia beetle Platypus quercivorus (Coleoptera: Platypodidae) in Japan

Bulletin of Entomological Research ◽

10.1079/ber2002158 ◽

2002 ◽

Vol 92 (2) ◽

pp. 119-126 ◽

Cited By ~ 49

Author(s):

N. Kamata ◽

K. Esaki ◽

K. Kato ◽

Y. Igeta ◽

K. Wada

Keyword(s):

Global Warming ◽

Reproductive Success ◽

Evolutionary Process ◽

Ambrosia Beetle ◽

Quercus Crispula ◽

Platypus Quercivorus ◽

Stable Relationship ◽

Future Global Warming ◽

Potential Impact ◽

Associated Species

AbstractDeciduous oak dieback in Japan has been known since the 1930s, but in the last ten years epidemics have intensified and spread to the island’s western coastal areas. The symbiotic ambrosia fungus Raffaelea sp. is the causal agent of oak dieback, and is vectored by Platypus quercivorus (Murayama). This is the first example of an ambrosia beetle fungus that kills vigorous trees. Mortality of Quercus crispula was approximately 40% but much lower for associated species of Fagaceae, even though each species had a similar number of beetle attacks. It is likely that other oaks resistant to the fungus evolved under a stable relationship between the tree, fungus and beetle during a long evolutionary process. Quercus crispula was probably not part of this coevolution. This hypothesis was supported by the fact that P. quercivorus showed the least preference for Q. crispulayet exhibited highest reproductive success in this species. Therefore, P. quercivorus could spread more rapidly in stands with a high composition of Q. crispula. The present oak dieback epidemic in Japan probably resulted from the warmer climate that occurred from the late 1980s which made possible the fateful encounter of P. quercivorus with Q. cripsula by allowing the beetle to extend its distribution to more northerly latitudes and higher altitudes. Future global warming will possibly accelerate the overlapping of the distributions of P. quercivorus and Q. crispula with the result that oak dieback in Q. crispula will become more prevalent in Japan.

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