- Tytuł:
- Life cycle of Perforatella bidentata (Gmelin, 1791) (Gastropoda: Pulmonata: Helicidae)
- Autorzy:
-
Kuznik-Kowalska, E.
Roksela, A. - Powiązania:
- https://bibliotekanauki.pl/articles/84318.pdf
- Data publikacji:
- 2009
- Wydawca:
- Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
- Opis:
- Laboratory and field observations made it possible to ascertain the following life cycle parameters of Perforatella bidentata (Gmel.): mating includes four phases, the longest being courtship; sperm is transferred in spermatophores. Eggs are laid in winter (November–February) and summer (May–September), in batches of 2–20. They are calcified, slightly oval, ca. 1.5 × 1.8 mm. Incubation takes 8–34 days, hatching is asynchronous. Growth from hatching to maturity lasts from ca. 3 to 9 months. In the wild the youngest age class appears in July. The maximum life span is 3 years. The activity is the greatest in spring and autumn; in all seasons it is greater in the night and early morning; juveniles are more active than adults. The individual mobility is up to 5 m/month.
- Źródło:
-
Folia Malacologica; 2009, 17, 4
1506-7629 - Pojawia się w:
- Folia Malacologica
- Dostawca treści:
- Biblioteka Nauki
Artykuł