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Shin-ya Ohba
Nagasaki University
48Publications
13H-index
392Citations
Publications 48
Newest
Published on Mar 1, 2019in Entomological Science 1.07
Shin-ya Ohba13
Estimated H-index: 13
(Nagasaki University)
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Published on Jan 1, 2019
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Published on Dec 31, 2018in Acta Arachnologica
Ken-ichi Okumura2
Estimated H-index: 2
,
Kazuyuki Honki (Nagasaki University), Shin-ya Ohba13
Estimated H-index: 13
(Nagasaki University)
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Published on Nov 1, 2018in Arachnology
Ken-ichi Okumura2
Estimated H-index: 2
,
Kazuyuki Honki (Nagasaki University), Shin-ya Ohba13
Estimated H-index: 13
(Nagasaki University)
A new species of the genus Callobius is described from Amami-Ōshima Island, southwestern Japan, under the name of Callobius amamiensis n. sp., and the differences from the related species, C. yakushimensis Okumura, 2010 are shown. The male palp of the new species is characterized by having the short mesal process in the tibia. In the female specimen, the lateral lobes of the epigyne are situated distant from each other, hence the width of epigyne is almost twice the length. In addition, the mito...
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Published on Sep 3, 2018in Ethology Ecology & Evolution 1.27
Shin-ya Ohba13
Estimated H-index: 13
(Kyoto University),
Sayaka Matsuo1
Estimated H-index: 1
(Nagasaki University)
+ 1 AuthorsShin-ichi Kudo2
Estimated H-index: 2
(Naruto University of Education)
Paternal care can be maintained under sexual selection in case that it helps caring males to attract more mates. Females of two back-brooding water bug species, the belostomatids Appasus major and A. japonicus, prefer egg-caring males over non-caring males. Here, we tested under laboratory and field conditions whether females of another belostomatid species, Diplonychus rusticus, prefer egg-caring males as mating partners. Caring males received more eggs from females than non-caring males under ...
3 Citations Source Cite
Published on Jan 19, 2018in Zoological Journal of the Linnean Society 2.69
José Ricardo Inacio Ribeiro5
Estimated H-index: 5
(Universidade Federal do Pampa),
Shin-ya Ohba13
Estimated H-index: 13
(Nagasaki University)
+ 4 AuthorsEric Guilbert12
Estimated H-index: 12
(CNRS: Centre national de la recherche scientifique)
3 Citations Source Cite
Published on Aug 1, 2017in Ecological Entomology 2.24
Shin-ya Ohba13
Estimated H-index: 13
(Nagasaki University),
Airi Maeda1
Estimated H-index: 1
(Nagasaki University)
1. Although potentially vulnerable to predators, the offspring of subsocial insects are effectively protected by their parent(s). The female giant water bug Kirkaldyia deyrolli lays its egg masses on the vegetation above the water surface in aquatic environments and the males supply the eggs with water and guard them against cannibalistic females until hatchling dispersal. Field observations showed that egg masses are attacked by ants if the attending males are not present. 2. Laboratory experim...
2 Citations Source Cite
Published on May 1, 2016in Royal Society Open Science 2.50
Shin-ya Ohba13
Estimated H-index: 13
(Kyoto University),
Noboru Okuda18
Estimated H-index: 18
(Kyoto University),
Shin-ichi Kudo2
Estimated H-index: 2
(Naruto University of Education)
Paternal care can be maintained under sexual selection, if it helps in attracting more mates. We tested the hypothesis in two giant water bug species, Appasus major and Appasus japonicus, that male parental care is sexually selected through female preference for caring males. Females were given an opportunity to choose between two males. In the first test of female mate choice, one male carried eggs on its back, while the other did not. The egg status was switched between these two males in the ...
6 Citations Source Cite
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