Life Cycle of &lt;i&gt;Perforatella bidentata&lt;/i&gt; (Gmelin, 1791) (Gastropoda: Pulmonata: Helicidae)

Kuźnik-Kowalska, Elżbieta; Roksela, Aneta

doi:10.2478/v10125-009-0016-x

Cited by 10 publications

(12 citation statements)

References 35 publications

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“…The average growth rate was estimated for all marked-recaptured snails in both populations. Because of large differences in the ultimate size (shells of the same size may have a different number of whorls) the growth rate was expressed by whorl increment, like in other studies (Pokryszko, 1990;Maltz, 2003;Kuznik-Kowalska, 2005;Kuznik-Kowalska and Roksela, 2009). Whorls were counted according to Ehrmann's (1933) method and seven size classes were distinguished (table 2).…”

Section: Methodsmentioning

confidence: 99%

Differences in population dynamics of Bradybaena fruticum (O.F. Müller, 1774) (Gastropoda: Pulmonata: Bradybaenidae) in a submontane and lowland area of Poland

Proćków¹,

Kuźnik-Kowalska

Lewandowska

2012

Animal Biol

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Population dynamics of a meso-hygrophilous helicoid Bradybaena fruticum was studied in SW Poland at two localities with similar habitat but different climatic conditions. Unexpectedly, at the submontane site in Szczytna the growth appeared to be significantly faster than in the lowland site (Wrocław), where the weather conditions varied widely during the whole growing season. In Szczytna the average growth rate was 0.26 whorl/month; 0.36 whorl/month in the fast phase (juveniles from hatching till 5.0 whorls), and 0.07 whorl/month in the slow phase (snails with 5.1 whorls till lip formation). During the whole growing season, the average increment was 4.5 whorls, whereas the maximum was 5.45 whorls. In Wrocław the average growth rate was 0.05 whorl/month; 0.1 whorl/month in the fast phase, and only 0.01 whorl/month in the slow phase. The average growth of juveniles, estimated during two growing seasons, equalled 3.8 whorls; the maximum recorded value was 4.75 whorls. In the winter there was hardly any growth. In earlier studies it was found that at higher altitude the growth rate seems to decrease and therefore appears to be correlated with the thermal regime of the locality. In this study it was established that the weather patterns, like months with drought or occasional flooding, are likely to influence the population dynamics in the lowland population.

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Section: Methodsmentioning

confidence: 99%

Differences in population dynamics of Bradybaena fruticum (O.F. Müller, 1774) (Gastropoda: Pulmonata: Bradybaenidae) in a submontane and lowland area of Poland

Proćków¹,

Kuźnik-Kowalska

Lewandowska

2012

Animal Biol

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“…Growth that includes both slow and fast phases has been observed in some heliciods [28,36]. In Perforatella bidentata and Trochulus hispidus, the fast phase included the period from hatching to about 5 whorls, and the slow phase occurred beyond 5 whorls.…”

Section: Growth and Maturationmentioning

confidence: 99%

“…The likely reason for this pattern is the cycle of gamete production (mainly oogenesis) in the gonad [18]. Contrary to many other helicoids [19][20][21][22][23][24][25][26][27][28], B. fruticum did not cover its eggs with protective mucus, which is thought to act against desiccation and microorganisms [23,29].…”

Section: Egg Laying Incubation and Hatchingmentioning

confidence: 99%

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Reproduction, growth and circadian activity of the snail Bradybaena fruticum (O. F. Müller, 1774) (Gastropoda: Pulmonata: Bradybaenidae) in the laboratory

Kuźnik-Kowalska

Lewandowska

Pokryszko³

et al. 2013

Open Life Sciences

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Selected life cycle parameters of the snail Bradybaena fruticum were studied in the laboratory. The initial material for the laboratory culture was taken from a population in South Western Poland; the snails were kept in Petri dishes and plastic containers. The temperature, humidity and lighting conditions were maintained at a constant level (day 18°C, night 12°C, rh 80%, light:dark 12:12). Circadian activity observations were conducted outside the climatic chamber. Eggs — calcified, slightly oval, of mean dimensions 2.67x2.56 mm — were laid singly or in batches of 6–62, as a result of both biparental and uniparental reproduction. Incubation took 27–76 days and hatching was asynchronous. Hatching success was lower among eggs produced by single parents compared to eggs produced by two parents (c.a. 56 and c.a. 88%, respectively). Growth included fast (2.25 to 5 whorls) and slow (1.9–2.25 and >5 whorls) phases as well as lip formation, and took 261 to 420 days. The first eggs/batches were laid c.a. one year later, and for uniparentally reproducing snails the period was even longer. The growth of snails kept singly was faster than in those kept in groups. Juvenile snails were much more active than adults in the spring, summer and autumn but the adults were more mobile in the winter. In all seasons, juveniles were more active at night than adults.

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“…The growth phases recorded in T. hispidus (fast phase followed by slow phase) seem to be typical for helicids and hygromiids (Maltz 2003;Kuźnik-Kowalska & Roksela 2009). The slow growth phase in such species is associated with a development of a reproductive system which has been discussed in Maltz (2003) and Maltz & Sulikowska-Drozd (2008).…”

Section: Life History Of Trochulus Hispidusmentioning

confidence: 99%

Field and laboratory studies on the life-cycle, growth and feeding preference in the hairy snail Trochulus hispidus (L., 1758) (Gastropoda: Pulmonata: Hygromiidae)

Proćków¹,

Drvotová

Juříčková

et al. 2012

Biologia

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For the first time the life cycle of the common land snail Trochulus hispidus was completely described in Central Europe (Poland). This is a semelparous species predominantly with an annual life cycle and the reproductive period lasting from April till October. The first young snails hatch in spring, grow rapidly in summer and reach ca. 4 whorls until winter. In spring of the next year they mature and reproduce. After that they die. There is hardly any growth from late autumn till early spring. The average proportional growth rate is ca. 0.3 whorl/month in the wild. The fastest growth is present in the youngest snails and then gradually decreases over the course of their age. Laboratory and field observations allowed for establishing the following life cycle parameters: eggs calcified, almost spherical, ca. 1.5 mm, laid in spring and summer in batches of between 1 and 47. Time to hatching is 6-24 days, hatching is asynchronous; newly-hatched snails have approximately 1.5 whorls. Analysis of food preferences revealed, that T. hispidus tends to restrict its diet during the life. Generally the youngest snails equally consumed leaves of all four tree species offered (Fraxinus excelsior, Acer pseudoplatanus, Tilia cordata and A. platanoides) whereas adults preferred F. excelsior over A. pseudoplatanus and A. platanoides.

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Life Cycle of <i>Perforatella bidentata</i> (Gmelin, 1791) (Gastropoda: Pulmonata: Helicidae)

Cited by 10 publications

References 35 publications

Differences in population dynamics of Bradybaena fruticum (O.F. Müller, 1774) (Gastropoda: Pulmonata: Bradybaenidae) in a submontane and lowland area of Poland

Differences in population dynamics of Bradybaena fruticum (O.F. Müller, 1774) (Gastropoda: Pulmonata: Bradybaenidae) in a submontane and lowland area of Poland

Reproduction, growth and circadian activity of the snail Bradybaena fruticum (O. F. Müller, 1774) (Gastropoda: Pulmonata: Bradybaenidae) in the laboratory

Field and laboratory studies on the life-cycle, growth and feeding preference in the hairy snail Trochulus hispidus (L., 1758) (Gastropoda: Pulmonata: Hygromiidae)

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