Assessing Megastigmus specularis(Hymenoptera: Megastigmidae) infestations in a Fraser fir (Abies fraseri (Pursh) Poir.) clonal seed orchard of the southern Appalachians

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10420238" target="_blank" >RIV/00216208:11310/20:10420238 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Fg2HvVPPSf" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Fg2HvVPPSf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/02827581.2020.1789733" target="_blank" >10.1080/02827581.2020.1789733</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Assessing Megastigmus specularis(Hymenoptera: Megastigmidae) infestations in a Fraser fir (Abies fraseri (Pursh) Poir.) clonal seed orchard of the southern Appalachians

Popis výsledku v původním jazyce

The Christmas tree industry is mainly supplied with seeds from natural stands and genetically improved germplasm from clonal seed orchards (CSOs). Chalcid wasps (Megastigmusspp.) have a negative effect on the value of seedlots by reducing the quantity of viable seeds and represent a risk for national and international seed trade. Seed radiographies, field observations and seed-dissections from 25 Fraser fir (Abies fraseri(Pursh) Poir.) clones were used to determine chalcid infestation in a CSO of the southern Appalachians. We provided direct evidence thatMesopolobuscf.pinusis an ectoparasitoid ofM. specularis, proposed a model that linked different aspects of the biology of these species and discussed host-insect phenological relationships. Infestation of seeds in some clones across surveys, suggested a potential genetic component to chalcid wasp&apos;s prevalence. Cold and dark rearing regimens were used to identify changes in adult insect emergence after variation of overwinter conditions. Both the frequency and the time of emergingM. specularisadults from seeds were affected by the duration of the treatments but not statistical differences were found forMesopolobuscf.pinus. We present evidence for the efficiency of a gravity-seed cleaning method eliminating upwards of 95% of chalcid-infested seeds.

Název v anglickém jazyce

Assessing Megastigmus specularis(Hymenoptera: Megastigmidae) infestations in a Fraser fir (Abies fraseri (Pursh) Poir.) clonal seed orchard of the southern Appalachians

Popis výsledku anglicky

The Christmas tree industry is mainly supplied with seeds from natural stands and genetically improved germplasm from clonal seed orchards (CSOs). Chalcid wasps (Megastigmusspp.) have a negative effect on the value of seedlots by reducing the quantity of viable seeds and represent a risk for national and international seed trade. Seed radiographies, field observations and seed-dissections from 25 Fraser fir (Abies fraseri(Pursh) Poir.) clones were used to determine chalcid infestation in a CSO of the southern Appalachians. We provided direct evidence thatMesopolobuscf.pinusis an ectoparasitoid ofM. specularis, proposed a model that linked different aspects of the biology of these species and discussed host-insect phenological relationships. Infestation of seeds in some clones across surveys, suggested a potential genetic component to chalcid wasp&apos;s prevalence. Cold and dark rearing regimens were used to identify changes in adult insect emergence after variation of overwinter conditions. Both the frequency and the time of emergingM. specularisadults from seeds were affected by the duration of the treatments but not statistical differences were found forMesopolobuscf.pinus. We present evidence for the efficiency of a gravity-seed cleaning method eliminating upwards of 95% of chalcid-infested seeds.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Scandinavian Journal of Forest Research

ISSN

0282-7581

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

NO - Norské království

Počet stran výsledku

11

Strana od-do

445-455

Kód UT WoS článku

000552551100001

EID výsledku v databázi Scopus

2-s2.0-85088554450