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Scheepmaker, J.W.A.; Geels, F.P.; Griensven, L. J. L. D. van; Smits, P. H.

doi:10.1023/a:1009954401065

Cited by 14 publications

(4 citation statements)

References 38 publications

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“…In the case of X. bovienii isolated from laboratory kept nematodes, the difference between the isolates is more pronounced. X. bovienii from the OBSIII sample was isolated from S. feltiae collected from a natural habitat in 1981 in the Netherlands (Ehlers et al 1997) and kept in the laboratory conditions since then (Scheepmaker et al 1998). It shows a lower specific growth rate and lower T opt than X. bovienii isolated from commercially available S. feltiae.…”

Section: Discussionmentioning

confidence: 99%

“…All nematodes originating from the natural habitats were collected shortly before the experiment and stored in a storage solution (NaCl, CaCl 2 × 2H 2 O, MgSO 4 , ascorbic acid, 0.25% formaldehyde) by two to three generations in 4 °C. Sample Commercial, purchased from Koppert Biological Systems (the Netherlands) and OBS III, collected from the natural habitat in 1980 (Noordoostpolder, the Netherlands) and stored under laboratory conditions since then (Scheepmaker et al 1998), represent nematodes bred in a controlled environment for a long time.…”

Section: Study Materials and Its Originmentioning

confidence: 99%

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Thermal sensitivity of Xenorhabdus bovienii (Enterobacterales: Morganellaceae) isolated from Steinernema feltiae (Rhabditida: Steinernematidae) originating from different habitats

Mackiewicz

Kramarz²,

Rożen³

2022

Appl Entomol Zool

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The soil-dwelling nematode Steinernema feltiae is found across a wide range of environmental conditions. We asked if its only bacterial symbiont, Xenorhabdus bovienii, shows intraspecific variability in its thermal range, which may affect effectiveness of S. feltiae against host insects. We isolated X. bovienii from S. feltiae from six different natural locations with different mean annual temperatures and two laboratory cultures. We estimated X. bovienii thermal range and determined the specific growth rate based on optical density measurements and mathematical modeling using the Ratkowsky model. The minimal temperature (Tmin) of X. bovienii growth ranged from 0.9 ± 2.2 °C to 7.1 ± 1.4 °C. The optimal temperature (Topt) varied between 25.1 ± 0.2 °C and 30.5 ± 0.2 °C. The model showed that X. bovienii stops multiplying at around 36 °C. The calculated specific X. bovienii growth rate ranged from 2.0 ± 0.3 [h−1] to 3.6 ± 0.5 [h−1]. No differences in Tmin, Topt, and Tmax between the isolated bacteria were found. Additionally, X. bovieniiTopt did not correlate with the mean annual temperature of S. feltiae origin. However, the obtained growth curves suggested that the analyzed X. bovienii may show some variability when comparing the growth curves characteristics.

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Section: Discussionmentioning

confidence: 99%

Section: Study Materials and Its Originmentioning

confidence: 99%

Thermal sensitivity of Xenorhabdus bovienii (Enterobacterales: Morganellaceae) isolated from Steinernema feltiae (Rhabditida: Steinernematidae) originating from different habitats

Mackiewicz

Kramarz²,

Rożen³

2022

Appl Entomol Zool

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“…Being a nearby spiral galaxy with very low inclination, M51 is one of the best targets for the star cluster studies in the late type galaxy. Recently, the Hubble Heritage program provided M51 images in B, V, I, and Hα bands taken with HST/ACS (Mutchler et al 2005) and a few early results of star cluster studies based on this data are already available (e.g., Gieles et al 2006;Hwang & Lee 2006;Scheepmaker et al 2006;Haas et al 2006).…”

Section: Star Cluster Survey In M51mentioning

confidence: 99%

Star Cluster Population of the Interacting Galaxy System M51

Hwang¹,

Lee²

2006

IAU

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We present a star cluster population study in the interacting galaxy system M51 based on HST ACS BVI mosaic images taken by the Hubble Heritage Team to commemorate the HST's 15th anniversary. We have found and classified star clusters in M51 using SExtractor and visual inspection. We have derived the photometry, size, and age of the clusters. It is found that the companion SB0 galaxy NGC 5195 harbors about 50 faint fuzzy clusters and that the age distribution of star clusters appears to be correlated with the epochs of dynamical events in M51 system.Comment: 2 pages, 2 figures. To appear in the Proceedings of IAU Symposium 241: "Stellar Populations as Building Blocks of Galaxies", 10-16 December, 2006 at La Palma, Canary Islands, Spain. Errors in the reference list were correcte

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“…In previous years many research studies were carried out in connection with EPNs ability to control storage pests (Trdan et al, 2006;Ramos-Rodriguez et al, 2007;Athanassiou et al, 2007), yet data on their effectiveness in controlling the rice weevil are limited (Ramos-Rodriguez et al, 2006). Because in Europe EPNs have not yet been tested for controlling the rice weevilwhich appears to be an increasingly harmful species in grain warehouses (Hamel, 2007) -we decided to study the activity of one of the generally most effective species for controlling pest insects, the nematode Steinernema feltiae (Filipjev) (Scheepmaker et al, 1998;Cuthbertson et al, 2003) with regard to the above mentioned storage pest. The aim of our research was to determine which of three tested strains (B30, B49, and 3162) is the most effective and how its effectiveness is related to temperature and suspension concentration.…”

Section: Introductionmentioning

confidence: 99%

Intraspecific variability of Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) as biological control agent of rice weevil (Sitophilus oryzae [L.], Coleoptera, Curculionidae) adults

LAZNIK,

TRDAN

2010

aas

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The efficacy of three strains (B30, B49 in 3162) of Steinernema feltiae to control adults of rice weevil (Sitophilus oryzae) was tested in a laboratory experiment in 2009. The activity of entomopathogenic nematodes was assessed at five different concentrations (125, 250, 500, 1000 and 2000 infective juveniles/individual) and four different temperatures (15, 20, 25 and 30 ?C). Results demonstrated that all strains acted most effective at 25 ?C and at highest concentration of nematode suspension, meanwhile the lowest mortality of rice weevil adults was attained at 30 ?C. The results of our research showed that at high concentrations entomopathogenic nematodes are an effective biological agent for controling the studied primary stored products pest.

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Untitled

Cited by 14 publications

References 38 publications

Thermal sensitivity of Xenorhabdus bovienii (Enterobacterales: Morganellaceae) isolated from Steinernema feltiae (Rhabditida: Steinernematidae) originating from different habitats

Thermal sensitivity of Xenorhabdus bovienii (Enterobacterales: Morganellaceae) isolated from Steinernema feltiae (Rhabditida: Steinernematidae) originating from different habitats

Star Cluster Population of the Interacting Galaxy System M51

Intraspecific variability of Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) as biological control agent of rice weevil (Sitophilus oryzae [L.], Coleoptera, Curculionidae) adults

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