Egg retention in the clausiliid Balea (Pseudalinda) fallax (Rossmassler, 1836) from Roztocze (S. E. Poland)

• Autorzy: Sulikowska-Drozd A. , Maltz T. K. , Stachyra P.
• Języki publikacji: EN

Abstrakty

EN

Adults of Balea fallax sampled monthly from the Roztocze Upland were dissected to examine the occurrence of uterine egg retention. Developing eggs were found in snails collected between May and August. In June more than 60% of the studied individuals were gravid, while in other months egg-retaining snails constituted less than 10% of the sample. The number of retained eggs ranged from 3 to 17 (mean 12.3) and was not related to the adult shell size. In June the majority of eggs contained shelled embryos (maximum shell size1.1 whorl). The reproduction mode of B. fallax is compared with those of other ovoviviparous clausiliids of Central Europe.

Słowa kluczowe

EN

egg retention; clausiliid; Clausiliidae; land snail; snail; life history; reproductive strategy; ovoviviparity; brooding; Balea fallax; Baleinae; Roztocze macroregion; Poland

• Wydawca: -
• Czasopismo: Folia Malacologica
• Rocznik: 2012
• Tom: 20
• Numer: 1
• Opis fizyczny: p.35-38,fig.,ref.

Twórcy

autor

Sulikowska-Drozd A.

• Department of Invertebrate Zoology and Hydrobiology, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland

autor

Maltz T. K.

• Museum of Natural History, Wroclaw University, Sienkiewicza 21, 50-335 Wroclaw, Poland

autor

Stachyra P.

• Base Station of the Integrated Monitoring of the Environment Roztocze in Roztocze National Park, Biały Slup 16, 22-470 Zwierzyniec, Poland

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