Evaluation of Rice Cultivars Grown in North America for Resistance to the Rice Water Weevil 1

1982 ◽  
Vol 11 (2) ◽  
pp. 334-336 ◽  
Author(s):  
C. M. Smith ◽  
J. F. Robinson
Keyword(s):  
North America ◽  
Rice Cultivars ◽  
Rice Water Weevil ◽  
Rice Water

A Way to Distinguish Sex of Adult Hylobius Weevils in the Field

1966 ◽  
Vol 98 (10) ◽  
pp. 1118-1119 ◽  
Author(s):  
L. F. Wilson ◽  
C. D. Waddell ◽  
I. Millers
Keyword(s):  
North America ◽  
North American ◽  
Abdominal Sternite ◽  
Hylobius Abietis ◽  
Lissorhoptrus Oryzophilus ◽  
Female Adult ◽  
Rice Water Weevil ◽  
Rice Water

The median depression on the last abdominal sternite is a useful character for distinguishing, in the field, the male from the female adult of all North American Hylobius species.Everett and Newsom (1964) used a midline depression or sulcus on the abdominal sternites to separate the sexes of the rice water weevil, Lissorhoptrus oryzophilus (Kushel), and other weevils that are not closely related to species of Hylobius in North America. The male of Hylobius abietis L., a European relative, is distinguished from the female by a saucerlilte depression on the last sternite (Anonymous 1952). Millers et al. (1963) state that the first and second visible abdominal sterna of the male H. rhizophagus Millers are concave, and the fifth has a slight median depression; the female sterna are convex.

Lissorhoptrus oryzophilus. [Distribution map].

1984 ◽  
Author(s):  
Keyword(s):  
North America ◽  
Central America ◽  
Geographical Distribution ◽  
Distribution Map ◽  
Lissorhoptrus Oryzophilus ◽  
Rice Water Weevil ◽  
Rice Water ◽  
New Distribution

Abstract A new distribution map is provided for Lissorhoptrus oryzophilus Kuschel [Coleoptera: Curculionidae] Rice water weevil. Attacks rice, various grasses and sedges. Information is given on the geographical distribution in ASIA, Japan, NORTH AMERICA, Canada, Mexico, USA, CENTRAL AMERICA, and CARIBBEAN, Cuba, Colombia.

scholarly journals Chromosome Unipolar Division and Low Expression of Tws May Cause Parthenogenesis of Rice Water Weevil (Lissorhoptrus oryzophilus Kuschel)

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 278
Author(s):  
Pengcheng Wang ◽  
Fangyuan Yang ◽  
Zhuo Ma ◽  
Runzhi Zhang
Keyword(s):  
Drosophila Melanogaster ◽  
Quantitative Pcr ◽  
Ovarian Tissue ◽  
Expression Patterns ◽  
Meiotic Spindle ◽  
Lissorhoptrus Oryzophilus ◽  
Rice Water Weevil ◽  
Rice Water ◽  
Beijing China ◽  
Low Expression

Rice water weevil (RWW) is divided into two types of population, triploid parthenogenesis and diploid bisexual reproduction. In this study, we explored the meiosis of triploid parthenogenesis RWW (Shangzhuang Town, Haidian District, Beijing, China) by marking the chromosomes and microtubules of parthenogenetic RWW oocytes via immunostaining. The immunostaining results show that there is a canonical meiotic spindle formed in the triploid parthenogenetic RWW oocytes, but chromosomes segregate at only one pole, which means that there is a chromosomal unipolar division during the oogenesis of the parthenogenetic RWW. Furthermore, we cloned the conserved sequences of parthenogenetic RWW REC8 and Tws, and designed primers based on the parthenogenetic RWW sequence to detect expression patterns by quantitative PCR (Q-PCR). Q-PCR results indicate that the expression of REC8 and Tws in ovarian tissue of bisexual Drosophila melanogaster is 0.98 and 10,000.00 times parthenogenetic RWW, respectively (p < 0.01). The results show that Tws had low expression in parthenogenetic RWW ovarian tissue, and REC8 was expressed normally. Our study suggests that the chromosomal unipolar division and deletion of Tws may cause parthenogenesis in RWW.

The Symbiotic BacteriaNardonellain Rice Water Weevil (Coleoptera: Curculionidae): Diversity, Density, and Associations With Host Reproduction

2016 ◽  
Vol 109 (3) ◽  
pp. 415-423 ◽  
Author(s):  
Xu Huang ◽  
Yunshan Huang ◽  
Jingyu Zhang ◽  
Fang Lu ◽  
Jing Wei ◽  
...  
Keyword(s):  
Rice Water Weevil ◽  
Rice Water

scholarly journals Efficacy of Pyrethroid Foliar Application Against Rice Water Weevil, 2018

2018 ◽  
Vol 43 (1) ◽  
Author(s):  
James M Villegas ◽  
Blake E Wilson ◽  
Michael J Stout
Keyword(s):  
Foliar Application ◽  
Rice Water Weevil ◽  
Rice Water
Sign in / Sign up

Export Citation Format

Share Document