Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Naoya Osawa"'
Autor:
Naoya OSAWA
Publikováno v:
European Journal of Entomology, Vol 119, Iss 1, Pp 133-139 (2022)
Many aphidophagous ladybird beetles lay clusters of eggs and sibling cannibalism occurs at hatching. Larvae that hatch early tend to cannibalize undeveloped eggs and those that hatch late. The cannibalized eggs, especially those that are sterile, rep
Externí odkaz:
https://doaj.org/article/02c73832af264fa3a630be8405e684a4
Publikováno v:
Nanomaterials, Vol 13, Iss 1, p 212 (2023)
To develop nanosensors to probe neurotransmitters, we synthesized fluorescent-functionalized molecularly imprinted polymeric nanoparticles (fMIP-NPs) using monoamine neurotransmitters (serotonin and dopamine) immobilized on glass beads as templates.
Externí odkaz:
https://doaj.org/article/4da04a9590cd419eb512d9213ccfbf96
Autor:
Arash Rasekh, Naoya Osawa
Publikováno v:
Ecology and Evolution, Vol 10, Iss 12, Pp 5899-5912 (2020)
Abstract In this study, we focused on the direct (i.e., predation) and indirect (i.e., potential threat from coexisting with a larger individual) effects of cannibalism and intraguild predation (IGP) during larval stages of two sibling ladybird beetl
Externí odkaz:
https://doaj.org/article/f3b9202618f54a049f0c24b560b66548
Autor:
Séverin Hatt, Naoya Osawa
Publikováno v:
Insects, Vol 12, Iss 5, p 382 (2021)
While insect predators need high-quality food to reach sexual maturity and reproduce, starvation following adult eclosion may occur when prey are missing in agroecosystems. This study explores whether the type of diet available at eclosion determines
Externí odkaz:
https://doaj.org/article/11596ca2950a485b801aa5e13a36bea1
Publikováno v:
European Journal of Entomology, Vol 111, Iss 2, Pp 307-311 (2014)
In predatory ladybirds male embryos in clutches of eggs infected with male-killing bacterial endosymbionts do not hatch and are consumed by female hatchlings. Moreover, it is predicted that infection with male-killing bacteria should be prevalent in
Externí odkaz:
https://doaj.org/article/67a9350ee5a446debb7b800b4aef7efd
Autor:
Suzuki Noriyuki, Naoya Osawa
Publikováno v:
Psyche: A Journal of Entomology, Vol 2016 (2016)
The range and quality of prey species differ greatly among closely related species of predators. However, the factors responsible for this diversified niche utilization are unclear. This is because the predation and resource competition do not always
Externí odkaz:
https://doaj.org/article/784b56dd7608406ebc33aa47789bea3b
Autor:
Naoya OSAWA, Arata YOSHINAGA
Publikováno v:
European Journal of Entomology, Vol 106, Iss 4, Pp 607-610 (2009)
In Hymenoptera and Heteroptera, the absence of micropyles is one criterion for categorizing an egg as trophic. Undeveloped eggs are observed in more than 90% of the egg clusters of the ladybird beetle Harmonia axyridis Pallas. Traditionally, these un
Externí odkaz:
https://doaj.org/article/2244c3dd19694efc81405bb9b40434d2
Autor:
Naoya OSAWA, Kazunori OHASHI
Publikováno v:
European Journal of Entomology, Vol 105, Iss 3, Pp 445-454 (2008)
The sibling species H. yedoensis Takizawa coexists sympatrically and simultaneously with H. axyridis only on pine trees in Japan. To elucidate the mechanisms enabling coexistence of these two sympatric sibling species, a laboratory experiment was per
Externí odkaz:
https://doaj.org/article/a158d6e49c01427cb8187991d85ccbf5
Autor:
Naoya OSAWA
Publikováno v:
European Journal of Entomology, Vol 102, Iss 3, Pp 503-511 (2005)
The ladybird beetle Harmonia axyridis Pallas was investigated under laboratory conditions to clarify the relationship between food abundance or scarcity and ovarian development or oosorption. Four conditions were used: (1) fully fed for 24 h, (2) 24-
Externí odkaz:
https://doaj.org/article/271383b09e324f4eaf6705db71fce43e
Autor:
Naoya OSAWA
Publikováno v:
European Journal of Entomology, Vol 100, Iss 1, Pp 43-48 (2003)
I hypothesized that sibling cannibalism is one of maternal investment in that a female controls sibling cannibalism. To test the hypothesis, I conducted a laboratory experiment and field observations to investigate sibling cannibalism in relation to
Externí odkaz:
https://doaj.org/article/c980f7166b8f4b51aa91f7f09d083dd2