scholarly journals Does the Land Snail Arianta arbustorum Prefer Sequentially Mixed Over Pure Diets?

1993 ◽  
Vol 7 (4) ◽  
pp. 403 ◽  
Author(s):  
B. Speiser ◽  
M. Rowell-Rahier
Keyword(s):  
Land Snail ◽  
Arianta Arbustorum

Effects of early feeding experience and age on the cannibalistic propensity of the land snail Arianta arbustorum

1987 ◽  
Vol 65 (12) ◽  
pp. 3068-3070 ◽  
Author(s):  
Bruno Baur
Keyword(s):  
Land Snail ◽  
Early Feeding ◽  
Vegetable Food ◽  
Egg Cannibalism ◽  
Feeding Experience ◽  
Arianta Arbustorum ◽  
Genetically Determined

The influence of early feeding experience on egg cannibalism was examined in hatchlings of the land snail Arianta arbustorum. The propensity for cannibalism was not affected by cannibalistic or by vegetarian early feeding experience. It was, however, negatively correlated with the age of the snails. Freshly hatched snails with no prior feeding experience chose eggs exclusively, while 16-day-old snails preferred vegetable food. Furthermore, the cannibalistic propensity varied between offspring from different clutches. Restriction of the cannibalistic propensity to the hatchling stage, its nonmodifiability, and differences in its extent between clutches suggest that egg cannibalism in A. arbustorum is a genetically determined trait.

scholarly journals Birch tar oil is an effective mollusc repellent: field and laboratory experiments using Arianta arbustorum (Gastropoda: Helicidae) and Arion lusitanicus (Gastropoda: Arionidae)

2008 ◽  
Vol 19 (1) ◽  
pp. 1 ◽  
Author(s):  
I. LINDQVIST ◽  
B. LINDQVIST ◽  
K. TIILIKKALA
Keyword(s):  
Plant Protection ◽  
Land Snail ◽  
Land Snails ◽  
Economic Damage ◽  
Plant Protection Product ◽  
Arion Lusitanicus ◽  
Northern Fennoscandia ◽  
Arianta Arbustorum ◽  
Tar Oil

Populations of two molluscs, the land snail Arianta arbustorum and the Iberian slug Arion lusitanicus, have increased substantially in many places in the northern Fennoscandia in recent years. This has resulted in considerable aesthetic and economic damage to plants in home gardens and commercial nurseries. Birch tar oil (BTO), is a new biological plant protection product, and was tested against these molluscs. In this study we examined whether 2 types of BTO, used either alone, mixed together, or mixed with Vaseline®, could be applied as 1) a biological plant protection product for the control of land snails by direct topical spray application, 2) as a repellent against snails when painted on a Perspex® fence, and 3) as a repellent against slugs when smeared on pots containing Brassica pekinensis seedlings. Both the fences and the pots with seedlings were placed in each field with a high population of the target organism. When applied as a spray on snails, BTO did not act as a toxic pesticide but rendered the snails inactive for a period of several months. The BTO barriers were effective in repelling both snails and slugs. However, the repellent effect of BTO alone against the molluscs was short-term. Repeated treatments were required to keep the slugs away from the plants and we found that the interval between treatments should not exceed two weeks. A collar fastened around the rim of the pots, combined with the BTO treatment, did not give any additional benefit in hindering slugs from invading the plants. Most noticeably, the BTO+Vaseline® mixture prevented the land snails from passing over the treated fences for up to several months. The results of these experiments provide evidence that BTO, especially when mixed with Vaseline®, serves as an excellent long-term repellent against molluscs.;

scholarly journals Visual selection in the land snail Arianta arbustorum

Heredity ◽  
1971 ◽  
Vol 26 (1) ◽  
pp. 35-47 ◽  
Author(s):  
David T Parkin
Keyword(s):  
Land Snail ◽  
Visual Selection ◽  
Arianta Arbustorum

The effect of multiple mating on female reproductive success in the simultaneously hermaphroditic land snail Arianta arbustorum

1993 ◽  
Vol 71 (12) ◽  
pp. 2431-2436 ◽  
Author(s):  
Xiaofeng Chen ◽  
Bruno Baur
Keyword(s):  
Reproductive Success ◽  
Hatching Success ◽  
Multiple Mating ◽  
Reproductive Traits ◽  
Land Snail ◽  
First Year ◽  
Female Reproductive Success ◽  
Female Function ◽  
Arianta Arbustorum ◽  
Second Year

The simultaneously hermaphroditic land snail Arianta arbustorum mates several times in the course of a reproductive season. Repeated matings might be adaptive for the male function of A. arbustorum to inseminate several "females." We designed an experiment to evaluate the effects of repeated mating on the female reproductive success of this hermaphrodite. Reproductive traits and survival were examined over 2 years in individuals that copulated several times per year (snails were kept in pairs), in individuals that copulated twice (once at the beginning of each year) or once (at the beginning of the first year only), and in individuals prevented from copulating (they were kept isolated). Copulations were not always reciprocally successful: 3 of 57 snails (5.3%) failed to produce fertile eggs, although their mates reproduced successfully. Similarly, 2 of 15 pairs (13.3%) failed to reproduce successfully. Snails allowed to mate repeatedly within each season tended to lay more eggs than snails that mated once per year. However, the numbers of hatchlings did not differ significantly between the two treatment groups, because eggs laid by snails allowed to mate repeatedly had a lower hatching success. Snails that remated in the second year laid more eggs that had higher hatching success, and thus produced more hatchlings than snails that mated once at the beginning of the first year only. Snails that were prevented from mating produced a few hatchlings (by self-fertilization) in the second year; their reproductive success was less than 1% of that of mated snails. Our results suggest that multiple mating is also adaptive for the female function of A. arbustorum by increasing female fecundity and fertility and serving as a hedge against unsuccessful copulations.

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