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Shell polymorphism in the land-snail Cepaea nemoralis (L.) along a west-east transect in continental Europe

100%

Ozgo M.

Folia Malacologica

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2012

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tom 20

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nr 3

The present study analyses variation in morph frequencies of C. nemoralis along a west-east transect spanning the whole range of the species in continental Europe. The transect passed along the 52°N parallel from the North Sea coast in the Netherlands to the Bug River in Poland (1,215 km). Samples were collected at the crossings of the parallel with consecutive meridians, within the radius of 15 km from the crossing point. The material comprises 27,666 individuals from 235 populations. C. nemoralis occurred along the whole transect, but was much more common and abundant in its eastern part. In large areas of the western part of the study area it was extremely rare and unabundant, indicating the severity of human impact on the environment, posed especially by industrial agriculture. Variation in morph frequencies did not show clear overall trends; there were some regularities but for the most part they did not coincide with large-scale climatic parameters. There were two significant trends: pink and mid-banded tended to increase eastwards and correlated positively with the measures of continentality. While the trend for mid-banded might be explicable on the grounds of climatic selection, for pink it is directly contrary to expectations and contrasts with the patterns of spatial distribution and temporal chan August 12ges in other parts of Europe. Probably, the distribution of morph frequencies reflects foremost the founding events occurring during colonisation of novel habitats and range ex- pansion. Contrary to the large-scale variation, the habitat effect consistent with the climatic selection hypothe- sis was observed along the whole transect, with light shells being more frequent in open than in shaded habitats. As thrush anvils were rare in the study area, and in places where they were present no evidence of selective predation was found, this morph distribution resulted most probably from microclimatic selection. C. nemoralis inhabited predominantly anthropogenic, short-lived habitats, and a clear habitat effect observed throughout the study area indicates a high rate of adaptation of populations of this species to environmental conditions. Although expected on theoretical grounds, there was no decrease in the level of polymorphism towards the limits of the species range, and the differences between open and shaded habitats were not consistent in direction. The probable explanation lies with the fact that the current limits of the distribution of this species in continental Europe are not really ecologically marginal. Additionally, the specific mating system protects populations of this species from the impoverishment of the gene pool. Linkage disequilibria were common in the study area. Tight linkage between the loci controlling the colour of the shell and the presence or absence of banding limits the scope of genotypes available to selection, and might be one of the reasons why different populations adapt along different genetic routes to similar environmental conditions. This is probably an additional factor contributing to the maintenance of polymorphism in this strikingly variable species.

2

Populations of Cepaea Hortensis (O. F. Muller, 1774) polymorphic for the colour of shell lip in north-western Poland and north-central Germany

100%

Ozgo M.

Folia Malacologica

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2010

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tom 18

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nr 2

In Cepaea hortensis (O. F. Müller), the shell lip (peristome) is usually white. In most areas the lip colour allows us to reliably distinguish this species from C. nemoralis (Linnaeus) in which the lip is usually dark brown. Populations polymorphic for lip colour are rare and occur only locally. Here I report on populations of C. hortensis containing dark-lipped individuals in north-western Poland and in north-central Germany. The frequency of dark-lipped individuals ranged from 3% to 31%. It was common in brown and pink shells, but occurred only sporadically in yellow shells. No selective factors promoting dark-lipped C. hortensis are evident. The occurrence of this phenotype is likely to reflect random events.

3

Rola, zagrozenia i problemy ochrony malzy skojkowatych [Unionidae]

100%

Ozgo M.

Chrońmy Przyrodę Ojczystą

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2010

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tom 66

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nr 3

201-208

Małże skójkowate ze względu na swój sposób odżywiania odgrywają kluczową rolę w procesach naturalnego oczyszczania wód. Jednocześnie należą do najbardziej zagrożonych grup organizmów zasiedlających nasze wody. Główne przyczyny zaniku ich populacji to: niszczenie siedlisk, eutrofizacja, zamulenie i zanieczyszczenie wód oraz regulacja rzek i przegradzanie ich tamami. Ochrona małży obejmuje utrzymywanie istniejących populacji, renaturyzację zdegradowanych siedlisk oraz programy rozmnażania i reintrodukcji. Propagowanie wiedzy na temat małży jest jednym z najważniejszych działań na rzecz ochrony naszych ekosystemów wodnych

4

Polimorfizm wstezyka gajowego [Cepaea nemoralis L.]: od selekcji wizualnej po zmiennosc molekularna

100%

Ozgo M.

Przegląd Zoologiczny

|

2005

|

tom 49

|

nr 1-2

7-30

5

Renin - angiotensin - aldosterone system versus osmotic pressure of blood plasma in calves in the neonatal period

100%

Ozgo M.

Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine

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2001

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tom 04

|

nr 2

6

Current problems in the research of Cepaea polymorphism

100%

Ozgo M.

Folia Malacologica

|

2008

|

tom 16

|

nr 2

Shell polymorphism in the land snails of the genus Cepaea has been studied for more than a century. Although these studies have taught us much about the ways in which evolutionary forces work at the population level, many problems are still unresolved. Studies of shell polymorphism, especially in populations living at the edges of the species’ geographical distribution, long-term surveys of morph frequencies in selected populations, studies of the dispersal abilities of Cepaea snails and of differences in physiology and behaviour among morphs will help to answer outstanding questions, which have direct relevance to our understanding of microevolutionary processes generally.

7

Dangerous relations: Pseudanodonta complanata and Dreissena polymorpha

100%

Ozgo M.

Folia Malacologica

|

2016

|

tom 24

|

nr 1

8

Zaleznosc miedzy stezeniem AVP i elektrolitami we krwi cielat w okresie neonatalnym

100%

Ozgo M.

Folia Universitatis Agriculturae Stetinensis. Zootechnica

|

2000

|

nr 39

119-123

9

Rola malych zbiornikow wodnych w ochronie bioroznorodnosci

100%

Ozgo M.

Parki Narodowe i Rezerwaty Przyrody

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2010

|

tom 29

|

nr 3

117-124

10

Wstepne badania nad zaleznoscia miedzy stezeniem aldosteronu i progesteronu we krwi krow w okresie okoloporodowym

63%

Ozgo M., Jankowiak D.

Folia Universitatis Agriculturae Stetinensis. Zootechnica

|

2001

|

nr 43

111-115

11

Colonisation and adaptation in a transplant experiment of the polymorphic land snail Cepaea nemoralis at the geographic range limit

63%

Ozgo M., Bogucki Z.

Folia Malacologica

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2012

|

tom 20

|

nr 1

12

The importance of peat excavation water bodies for biodiversity and conservation: a case of three Unionidae [Bivalvia] mussel species

63%

Ozgo M., Abraszewska A.

Polish Journal of Ecology

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2009

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tom 57

|

nr 4

793-798

This paper presents populations of Anodonta cygnaea (L.), Anodonta anatina (L.) and Unio pictorum (L.) inhabiting an artificial pond (area 0.3 ha, depth 4 m) formed at a peat excavation site 13 years prior to the collection of the data. The mussels probably colonized the pond as glochidia attached to host fish introduced for angling or migrating with flood waters. The mussel populations were characterized by high densities, high average and maximum shell lengths and high proportions of young individuals. Our study shows that man-made ponds can become favorable habitats for freshwater mussels, and that relatively short time is needed to establish their viable populations. Active conservation of unionid mussels in man-made habitats may require human help at the dispersal stage.

13

Rzekotka drzewna Hyla arborea L. w Obszarze Chronionego Krajobrazu Pas Pobrzeza na Wschod od Ustki

63%

Ozgo M., Hetmanski T.

Chrońmy Przyrodę Ojczystą

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2008

|

tom 64

|

nr 3

63-75

14

Uklad renina-angiotensyna-aldosteron w okresie okoloporodowym i neonatalnym

63%

Ozgo M., Skrzypczak W. F.

Medycyna Weterynaryjna

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1999

|

tom 55

|

nr 11

737-741

15

Polimorfizm muszli wstezyka austriackiego, Cepaea vindobonensis [Fer.], w poludniowo-wschodniej Polsce

63%

Ozgo M., Zieba K.

Przegląd Zoologiczny

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2004

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tom 48

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nr 1-2

109-112

16

Shell predation and cannibalism in land snails living on acid and calcium-deficient soils

63%

Ozgo M., Bogucki Z.

Folia Malacologica

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2006

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tom 14

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nr 4

Taking up calcium contained in the shells of dead snails or bird eggs is a common phenomenon in land snails. However, calcium deficiency can lead to uptake of calcium contained also in shells of live snails. At several sites we have observed Cepaea nemoralis gnawing at shells of live Helix pomatia and other Cepaea nemoralis. Sometimes the intensity of this behaviour was such that shells of virtually all live snails in a population, irrespective of their age, were damaged and in some cases holes through the shells could be seen. Those populations lived on acid (pH 3.6–5.9) and calcium-deficient soils (calcium content 96–774 mg/kg). Acid precipitation is recognised as one of the most important threats to terrestrial gastropods. Presently, with growing acidification of the environment, shell predation and cannibalism can be expected to occur more and more often and pose an additional threat to snail populations.

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Assessment of population density of Capaea nemoralis and Capaea hortensis with two methods based on maeking-release-recapture

63%

Radawiec B., Ozgo M.

Folia Malacologica

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2013

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tom 21

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nr 3

18

Humidity and the effect of shell colour on activity of Cepaea nemoralis (Linnaeus, 1758)

63%

Ozgo M., Kubea A.

Folia Malacologica

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2005

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tom 13

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nr 3

Activity of brown and yellow unbanded shelled Cepaea nemoralis (L.) was observed in 23 outdoor cage experiments carried out at various weather conditions in S³upsk, northern Poland. The experiments were carried out at noon local time and lasted one hour; the activity of each snail was scored at 5 minute intervals. In the range of temperatures examined in this study, air humidity was the significant factor associated with differences in the activity of the morphs. At air humidity of approximately 90%, all snails remained active throughout the experiment, irrespective of the colour of the shell. At air humidity of over 70% brown snails remained active significantly longer than yellow ones. When humidity was below 70%, yellow snails remained active significantly longer than brown ones, and the onset of inactivity was earlier with decreasing air humidity. No consistent effect of the level of solar radiation, air temperature, or air humidity/temperature ratio was observed. Even though the differences in the time of remaining active were not large, they indicate that yellow and brown C. nemoralis are adapted to different climatic conditions.

19

13th Evolutionary Biology Meeting

63%

Ozgo M.

Folia Malacologica

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2009

|

tom 17

|

nr 4

20

Rapid increase in mortality of Anodonta anatina and Unio pictorum in a Poland in Hamrzysko

63%

Ozgo M.

Folia Malacologica

|

2015

|

tom 23

|

nr 1

Ograniczanie wyników

Shell polymorphism in the land-snail Cepaea nemoralis (L.) along a west-east transect in continental Europe

Populations of Cepaea Hortensis (O. F. Muller, 1774) polymorphic for the colour of shell lip in north-western Poland and north-central Germany

Rola, zagrozenia i problemy ochrony malzy skojkowatych [Unionidae]

Polimorfizm wstezyka gajowego [Cepaea nemoralis L.]: od selekcji wizualnej po zmiennosc molekularna

Renin - angiotensin - aldosterone system versus osmotic pressure of blood plasma in calves in the neonatal period

Current problems in the research of Cepaea polymorphism

Dangerous relations: Pseudanodonta complanata and Dreissena polymorpha

Zaleznosc miedzy stezeniem AVP i elektrolitami we krwi cielat w okresie neonatalnym

Rola malych zbiornikow wodnych w ochronie bioroznorodnosci

Wstepne badania nad zaleznoscia miedzy stezeniem aldosteronu i progesteronu we krwi krow w okresie okoloporodowym

Colonisation and adaptation in a transplant experiment of the polymorphic land snail Cepaea nemoralis at the geographic range limit

The importance of peat excavation water bodies for biodiversity and conservation: a case of three Unionidae [Bivalvia] mussel species

Rzekotka drzewna Hyla arborea L. w Obszarze Chronionego Krajobrazu Pas Pobrzeza na Wschod od Ustki

Uklad renina-angiotensyna-aldosteron w okresie okoloporodowym i neonatalnym

Polimorfizm muszli wstezyka austriackiego, Cepaea vindobonensis [Fer.], w poludniowo-wschodniej Polsce

Shell predation and cannibalism in land snails living on acid and calcium-deficient soils

Assessment of population density of Capaea nemoralis and Capaea hortensis with two methods based on maeking-release-recapture

Humidity and the effect of shell colour on activity of Cepaea nemoralis (Linnaeus, 1758)

13th Evolutionary Biology Meeting

Rapid increase in mortality of Anodonta anatina and Unio pictorum in a Poland in Hamrzysko