Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Georg Ribi"'
Publikováno v:
Journal of Molluscan Studies
Hybridization must be followed by repeated backcrossing of the subsequent hybrid generations to the parental species for gene exchange between species to occur. Due to meiotic failures, first-generation hybrids of some species produce unreduced gamet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa80b426ea3f11604166f42816f63fd2
Autor:
Georg Ribi, Sabine Oertli
Publikováno v:
Biological Journal of the Linnean Society. 71:133-143
In species pairs able to produce fertile hybrids, the amount of introgression can be limited by the frequency of interspecific copulations. We investigated the frequency of interspecific copulations between Kviparus ater and V. contectus and the prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2b0cc41023e567c979155d8cdf1eaeb
https://doi.org/10.1111/j.1095-8312.2000.tb01247.x
https://doi.org/10.1111/j.1095-8312.2000.tb01247.x
Autor:
Georg Ribi, Christoph Vorburger
Publikováno v:
Freshwater Biology. 42:111-119
1. The introduced North American crayfish, Pacifastacus leniusculus Dana, is expanding its range in Europe and locally often replaces two native crayfish species, Astacus astacus L. and Austropotamobius pallipes Lereboullet. Pacifastacus leniusculus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b6fe257920bc243b2a7d3b9ff0ae1ab
https://doi.org/10.1046/j.1365-2427.1999.00465.x
https://doi.org/10.1046/j.1365-2427.1999.00465.x
Autor:
Georg Ribi, Hans Burla
Publikováno v:
Aquatic Sciences. 60:145-156
A population explosion of the zebra mussel Dreissena polymorpha in Lake Zurich in the early seventies was followed by a decline, most noticeably in the littoral zone (Burla and Lubini-Ferlin, 1976). To check for further density changes, zebra mussels
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fa8c77b11a1808644f48cfc5c2e1608
https://doi.org/10.1007/pl00001315
https://doi.org/10.1007/pl00001315
Autor:
Hans Trüb, Georg Ribi
Publikováno v:
Heredity. 79:418-423
High fecundity of hybrids between the sympatric snail species Viviparus ater and V. contectus (Gastropoda: Prosobranchia)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6570520bf0d3e37e161341494803f8b9
https://doi.org/10.1038/sj.hdy.6882400
https://doi.org/10.1038/sj.hdy.6882400
Autor:
Georg Ribi, Masaya Katoh
Publikováno v:
Journal of Molluscan Studies. 63:505-510
To estimate the geographical extent of introgression, we studied the genetic structure of sympatric and allopatric populations of hybridizing freshwater snail species Viviparus ater and V. contectus in central Europe. Six allozyme loci which were var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a00af328d8a34c8b141d2c4890c2d047
https://doi.org/10.1093/mollus/63.4.505
https://doi.org/10.1093/mollus/63.4.505
Autor:
Georg Ribi, Adam H. Porter
Publikováno v:
Animal Behaviour. 49:1389-1398
The aquatic snailsViviparus aterandV. contectusare sympatric in several places in southern Europe; they differ morphologically, karyotypically and in their life-history traits. Previous work has shown weak introgression of allozyme markers associated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c4021cb5957635f61a17a9a7928711b
https://doi.org/10.1006/anbe.1995.0169
https://doi.org/10.1006/anbe.1995.0169
Autor:
Adam H. Porter, Georg Ribi
Publikováno v:
Heredity. 73:170-176
Population genetics of Viviparus (Mollusca: Prosobranchia): homogeneity of V. ater and apparent introgression into V. contectus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7aec3469f762746f84fb8f8fe8439a5b
https://doi.org/10.1038/hdy.1994.116
https://doi.org/10.1038/hdy.1994.116
Autor:
Georg Ribi, René Bein
Publikováno v:
Aquatic Sciences. 56:97-105
We performed two experiments, one to test whether survival and initial swim bladder inflation of perchPerca fluviatilis are affected by population density (4 or 16 larvae 1−1) or salinity (0‰, 0.6‰ and 1.2‰), and the second to test the salini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::546a02f3bb1847401aa976a6d70c4dea
https://doi.org/10.1007/bf00877201
https://doi.org/10.1007/bf00877201
Autor:
Georg Ribi, G. Keller
Publikováno v:
Oecologia. 93:493-500
In this study we identified some of the predators of the freshwater snail Viviparus ater and estimated offspring survival to the end of the first summer in a natural population. Newborn V. ater were eaten by the fish Barbus barbus, Rutilus rutilus, S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b55db8bcab181dd4c2e0cff36733abc
https://doi.org/10.1007/bf00328956
https://doi.org/10.1007/bf00328956