نتایج جستجو برای: overwinter

تعداد نتایج: 535  

2011
Jake L. Gregg Johanna J. Vollenweider Courtney A. Grady Ron A. Heintz Paul K. Hershberger

The effects of temperature and infection by Ichthyophonus were examined in juvenile Pacific herring (Clupea pallasii) maintained under simulated overwinter fasting conditions. In addition to defining parameters for a herring bioenergetics model (discussed in Vollenweider et al. this issue), these experiments provided new insights into factors influencing the infectivity and virulence of the par...

2010
Kevin A. Glover Naohisa Kanda Tore Haug Luis A. Pastene Nils Øien Mutsuo Goto Bjørghild B. Seliussen Hans J. Skaug

The Antarctic minke whale (Balaenoptera bonaerensis), and the common minke whale found in the North Atlantic (Balaenoptera acutorostrata acutorostrata), undertake synchronized seasonal migrations to feeding areas at their respective poles during spring, and to the tropics in the autumn where they overwinter. Differences in the timing of seasons between hemispheres prevent these species from mix...

Journal: :Journal of economic entomology 2008
Rodney N Nagoshi Robert L Meagher Kathy Flanders Jeffrey Gore Ryan Jackson Juan Lopez John S Armstrong G David Buntin Chris Sansone B Rogers Leonard

Fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), infestations in most of North America north of Mexico arise from annual migrations of populations that overwinter in southern Texas and Florida. A comparison of the cytochrome oxidase I haplotype profiles within the fall armyworm corn-strain, the subgroup that preferentially infests corn (Zea mays L.) and sorghum (Sorg...

2018
Xiaojing Wu Xiaofeng Zhu Yuanyuan Wang Xiaoyu Liu Lijie Chen Yuxi Duan

The northern root-knot nematode, Meloidogyne hapla, is one of the most important nematode pathogens occurring in cold regions. It is a sedentary, biotrophic parasites of plants and overwinter in the soil or in diseased roots. This study showed that the cold tolerance for the second-stage juveniles (J2) of M. hapla was moderate with the 50% survival temperature (S50) of -2.22°C and the fatal tem...

Journal: :Journal of nematology 2012
Zhen Fu Paula Agudelo Christina E Wells

Desiccation tolerance plays an important role in the overwinter survival of the foliar nematode Aphelenchoides fragariae. Survival rates of A. fragariae were compared with those of the anhydrobiotic soil-dwelling nematode Aphelenchus avenae after desiccation (90% RH), cold (4°C) and osmotic (500 mM sucrose) stress treatments. A. fragariae formed aggregates during desiccation and showed higher s...

Journal: :Journal of the American Mosquito Control Association 2012
Ary Farajollahi Scott C Crans

A checklist of 63 species of mosquitoes endemic in New Jersey is presented. Although Aedes albopictus was included in the previous checklist, the species has dramatically increased its geographic range and population numbers in recent years, and it is now prevalent in 19 of New Jersey's 21 counties. The invasive Aedes japonicus japonicus is also now widespread throughout the state and is an add...

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