Geographic races in the predaceous mite,<i>Amblyseius potentillae</i>(Acari: Phytoseiidae)

McMurtry, J. A.; Mahr, Dan; Johnson, H. G.

doi:10.1080/01647957608683752

Cited by 53 publications

(26 citation statements)

References 8 publications

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“…in agreement with what is known to date for the majority of phytoseiids (Croft 1970;McMurtry et al 1976;McMurtry 1980;Moraes and McMurtry 1981;Moraes 2002, 2004). Thus, the high proportion of ovipositing females observed in inter-population crosses imply that mating had occurred, therefore indicating the absence of pre-mating reproductive barriers between the populations under test.…”

Section: Discussionsupporting

confidence: 77%

Morphological variation and reproductive incompatibility of three coconut-mite-associated populations of predatory mites identified as Neoseiulus paspalivorus (Acari: Phytoseiidae)

et al. 2010

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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. elsewhere. Preliminary identification of geographically distinct populations as belonging to the same species (N.paspalivorus) was based on their morphological similarity. However, laboratory studies recently conducted have shown large differences in feeding behaviors and biological characteristics among individuals collected from three geographic origins: Brazil (South America), Benin and Ghana (West Africa). As morphologically similar specimens do not necessary belong to the same species, we evaluated under laboratory conditions, reproductive compatibility between the specimens from three geographic locations to ascertain their conspecificity.Morphological measurements were also made to determine if there is a means of discriminating between them.Inter-population crosses showed complete reproductive isolation between the three geographic populations, but interpopulation discontinuities in morphometric characters were absent. These results indicate that the tested specimens are distinct biological entities despite morphological similarity. Further molecular genetic studies are therefore proposed, including screening for endosymbionts and assessment of genetic differentiation, to determine the cause of reproductive incompatibility and to clarify the taxonomic relationship between those populations.

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Section: Discussionsupporting

confidence: 77%

Morphological variation and reproductive incompatibility of three coconut-mite-associated populations of predatory mites identified as Neoseiulus paspalivorus (Acari: Phytoseiidae)

et al. 2010

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“…Eggs and larvae are most susceptible to low humidities, probably because larger, more mobile life stages ingest free water or move to higher humidities. Humidity tolerances of phytoseiids appear to be related to ambient humidity found in their respective geographic areas of origin or on the host plants they inhabit (McMurtry et aL, 1976, van Dinh et al, 1988.…”

Section: Introductionmentioning

confidence: 99%

Effects of humidity on eggs and immatures of Neoseiulus fallacis, Amblysieus andersoni, Metaseiulus occidentalis and Typhlodromus pyri (Phytoseiidae): implications for biological control on apple, caneberry, strawberry and hop

et al. 1993

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Croft. B.A., Messing, R.H., Dunley. J.E. and Strong, W.B. 1993. Effects of humidity on eggs and immatures of Neoseiutus fatlacis, Amblyseius andersoni, Metaseiutus occidentalis and Typhh~-dromus pyri (Phytoseiidae): implications for biological control on apple, caneberry, strawberry' and hop. Exp. Appl. Acarol., 17: 451--459.The lethal humidity (LHso) responses at 20°C of eggs of two strains ofNeoseiulusfallacis (Garman) were 71.6 and 69.7%; of three strains ofAmblyseius andersoni (Chant) were 62.9, 62.0 and 62.4% and of one strain each of T~phlodromus pyri Scheuten and Metaseialus occidentalis Nesbitt were 55.0 and 28.4%, respectively. Eggs of three genetically distinct strains ofA. amtersoni from Oregon, the Netherlands and Italy did not respond differently from one another nor did eggs of freely hybridizing N. fallacis from Michigan and Oregon. Mortality of larvae through development to early protonymphs at 50% RH, 20°C. was 91.9.82.3.46.2 and 31.0% for fed mites and 98.1, 83.2.67.0 and 89.7% for unfed mites of Oregon strains of N. fidlacis, A. andersoni, T. pyri and M. occidentalis, repectively. Fed larvae-protonymphs ofM. occidentalis and T. pyri were more tolerant of low humidity than fed larvae-protonymphs ofN. fallacis and A. andersoni. Mortality was less for fed than unfcd larvae-protonymphs of M. occidentalis and/i pyri, but there were no differences tbr A. andersoni and zh: fallacis. Levels of feeding by predator larvae on T. urticae and cannibalism by phytoseiid protonymphs contributed to species differences. Responses to humidity are discussed in relation to geographic and host plant distributions and biological control by single or mixed species populations of phytoseiids.

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“…Resultados semelhantes para essa mesma espécie haviam sido obtidos por Moraes & McMurtry (1981), assim como para outras espécies de fitoseídeos (Croft 1970, McMurtry et al 1976, McMurtry 1980. Isto significa que os resultados de cruzamentos em laboratório podem ser utilizados para inferir a ocorrência de acasalamento nos casos em que oviposição tenha sido verificada.…”

Section: Discussionunclassified

“…Entretanto, isto nem sempre tem sido observado. McMurtry et al (1976) verificaram compatibilidade reprodutiva entre populações de Amblyseius potentillae (Garman) originárias de macieira na Holanda e de citros na Itália. O mesmo foi verificado por Braun et al (1993) …”

Section: Discussionunclassified

Compatibilidade Reprodutiva Entre Populações de Euseius citrifolius Denmark & Muma (Acari: Phytoseiidae)

Noronha¹,

Moraes²

2002

Neotrop. Entomol.

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-The objective of this study was to verify the reproductive compatibility between populations of Euseius citrifolius Denmark & Muma, to ascertain that they belonged to the same species. The individuals collected in the field were identified as E. citrifolius based on morphological characters. Populations were collected from Bauhinia sp. in Arroio do Meio -RS, Coffea arabica L. in Campinas -SP and Terminalia catappa L. in Petrolina -PE, Brazil. Homogamic and heterogamic crosses and backcrosses were conducted to evaluate reproduction for a period of 10 days. Oviposition rates in homogamic crosses were generally higher than in heterogamic crosses. Partial incompatibility was observed in heterogamic crosses involving females from Petrolina; they did not produce offspring when backcrossed with males of parental populations. This apparent incompatibility can be due to intrinsic characteristics represented by difference in genomic population. So, the populations studied belong to the same species, and the gene flow can occur between populations from Petrolina and Arroio do Meio, as well as between populations from Campinas and Petrolina. Study for detection of Wolbachia and molecular characterization of this populations may be a good tool for the understanding of incompatibility results.KEY WORDS: Biological control, mite, phytoseiid, predator RESUMO -O objetivo deste estudo foi verificar a compatibilidade reprodutiva entre algumas populações de Euseius citrifolius Denmark & Muma, para comprovação de que pertencem a uma mesma espécie. Os exemplares coletados em campo foram identificados como E. citrifolius com base em caracteres morfológicos. As populações foram coletadas de Bauhinia sp. em Arroio do Meio -RS, Coffea arabica L. em Campinas -SP e Terminalia catappa L. em Petrolina -PE. Cruzamentos e retrocruzamentos foram realizados para avaliar a reprodução destes ácaros durante um período de dez dias. Os níveis de oviposição nos cruzamentos homogâmicos foram maiores que nos cruzamentos heterogâmicos. Observou-se incompatibilidade reprodutiva parcial nos cruzamentos heterogâmicos envolvendo fêmeas de Petrolina; elas não produziram descendentes quando retrocruzadas com indivíduos das populações parentais. Essa incompatibilidade aparente pode ter-se devido às características intrínsecas representadas por diferenças no genoma das populações. As populações estudadas pertencem, pois, à uma mesma espécie, e o fluxo gênico pode ocorrer entre as populações de Petrolina e Arroio do Meio e de Campinas e Petrolina. Estudos para detecção de Wolbachia e de caracterização molecular dessas populações poderão fornecer informações que auxiliem no entendimento das incompatibilidades.

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Geographic races in the predaceous mite,Amblyseius potentillae(Acari: Phytoseiidae)

Cited by 53 publications

References 8 publications

Morphological variation and reproductive incompatibility of three coconut-mite-associated populations of predatory mites identified as Neoseiulus paspalivorus (Acari: Phytoseiidae)

Morphological variation and reproductive incompatibility of three coconut-mite-associated populations of predatory mites identified as Neoseiulus paspalivorus (Acari: Phytoseiidae)

Effects of humidity on eggs and immatures of Neoseiulus fallacis, Amblysieus andersoni, Metaseiulus occidentalis and Typhlodromus pyri (Phytoseiidae): implications for biological control on apple, caneberry, strawberry and hop

Compatibilidade Reprodutiva Entre Populações de Euseius citrifolius Denmark & Muma (Acari: Phytoseiidae)

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