Dart shooting influences paternal reproductive success in the snail Helix aspersa (Pulmonata, Stylommatophora)

Landolfa, Michael A.; Green, David M.; Chase, Ronald

doi:10.1093/beheco/12.6.773

Cited by 49 publications

(56 citation statements)

References 13 publications

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“…Chase and Blanchard (2006) supported the hypothesis that the dart transfers a substance via the mucus capable of reconfiguring the spermatophore-receiving organs and it may be a peptide. The delivered mucus via love-dart thought to play a key role in increasing paternity (Landolfa et al, 2001 andBlanchard, 2006). Our histological examination is in accordance that of Gómez et al (1996) who reported that the glandular parts of the auxiliary copulatory organ possess thick, mostly muscular walls that facilitate the rapid expulsion of mucous substances.…”

Section: (A) a Continuous Epithelium Of Columnar Cells The Nephrocytsupporting

confidence: 89%

Histopathological Changes Induced by Metaldehyde in Eobania vermiculata (Müller 1774)

2011

Alexandria Science Exchange Journal: An International Quarterly

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Metaldehyde is a specific molluscicide for terrestrial snails and slugs. Histopathological changes induced by metaldehyde in the terrestrial snail E. vermiculata were investigated by light microscopy in order to study its cellular toxicity. Alterations in digestive gland included cellular infiltration, destruction of intertubular connective tissue, and extensive vacuolation in the cytoplasm of digestive cells. Degeneration and necrosis in the lining epithelium of the digestive tubules were also noticed. Irregular thickening in the outer covering muscular layer, thinning of basal layer, atrophy and degeneration of mucous cells were the most observed changes in dart gland. The histological alterations in the kidney were degeneration of nephrocytes, and an increase in the number and size of concretions in nephrocytes. Metaldehyde showed cytotoxic effects in all tested organs, that in turn leads to failure of the digestive, reproductive and excretory systems.

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Section: (A) a Continuous Epithelium Of Columnar Cells The Nephrocytsupporting

confidence: 89%

Histopathological Changes Induced by Metaldehyde in Eobania vermiculata (Müller 1774)

2011

Alexandria Science Exchange Journal: An International Quarterly

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“…As the spermatophore is transferred into this bursa tract diverticulum in C. aspersum, it was proposed that the conformational change and the peristalsis would delay digestion of donated sperm and promote sperm storage. Indeed, follow-up studies found that successful dart shooting, or experimental injection of only the mucus, resulted in greater sperm storage and paternity of the sperm donor (Landolfa et al, 2001;Rogers and Chase, 2001;Chase and Blanchard, 2006). However, it has been reported that, contrary to the results in C. aspersum, dart shooting has no influence on sperm storage in Arianta arbustorum, which also belongs to the Helicidae just like C. aspersum (Bojat and Haase, 2002).…”

Section: Introductionmentioning

confidence: 99%

Common effect of the mucus transferred during mating in two dart-shooting snail species from different families

Kimura

Chiba

Koene

2014

Journal of Experimental Biology

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Several taxa of pulmonate land snails exhibit a conspicuous mating behaviour, the shooting of so-called love darts. During mating, such land snail species stab a mating partner with a mucus-coated dart. It has previously been shown that the sperm donor physiologically influences the sperm recipient via the mucus covering the dart and thereby decreases the number of sperm digested by the recipient. However, the generality of this effect of the dart's mucus is unclear, because almost all the previous studies on the effect of the mucus used the brown garden snail Cornu aspersum from the family Helicidae. Therefore, the relationship between the acquisition of the mucus effect on the recipient and the evolution of the dart itself, and its mucus, is still open to debate. To test the commonality of the physiological effect of the dart mucus, we examined this in Euhadra peliomphala, a species from the Bradybaenidae family, and compared our findings with the results of previous work using C. aspersum. Our experiments showed that in E. peliomphala, the dart mucus had a physiological effect and lowered the accessibility of the gametolytic organ, as found in C. aspersum. This indicates that in various dart-bearing species the mucus from the dart glands targets the same organ and that the inhibition of sperm digestion has played a crucial role in the evolution of the dart and its mucus.

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“…Since mating is completed only when there is appropriate exchange of stimuli, mate preference was more for homotypes than for heterotypes. Reproduction is a costly activity in snails (Daly, 1978;Ridly, 1983;Landolfa et al, 2001;Saltin, 2010) hence snails invest reproductive resources to maximize reproductive fitness (Landolfa et al, 2001;Johannesson et al, 2010). Accordingly, homotypic pairing in the present experiment seems natural, sure and more beneficial hence optimal while hetrotypic pairing could be regarded as suboptimal and maladaptive (Saltin, 2010).…”

Section: Resultsmentioning

confidence: 76%

“…The snails were fed a combination of formulated ration and plant food materials. Isolation in individual baskets lasted for at least 90 days (range 90 days to 120 days) believed to be long enough to allow the snails develop strong desire to mate (Dillen et al, 2010) and to shed fertilized eggs it may have carried from the wild (Baur, 1993;Landolfa et al, 2001).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of pre-mating reproductive isolation in Archachatina marginata from three populations in the humid tropics

Ogbu¹,

C²,

Ugwu³

et al. 2011

Afr. J. Biotechnol.

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Three populations of Archachatina marginata snails (P 1 , P 2 and P 3 ) obtained from natural snail habitats located in three states of Nigeria (one population per state) namely Enugu, Edo and River States were evaluated for pre-mating reproductive isolation using mate-choice tests. Total number of mated snails were very small (19.2%) compared to the number tested. Mating propensity (MP) varied significantly (P ≤ 0.05) among snail populations in two test groups and observed MP in the test groups differed significantly (chi-square test, P < < < <0.05; 0.001) from that expected under random mating. Pair formation was significantly (chi-square test, P < < < < 0.05; 0.001) influenced by differences in MP and within-population (homotypic) and between population (heterotypic) mating occurred in frequencies that differed significantly (chi-square test, P ℜ ℜ ℜ ℜ 0.05; 0.001) from that expected under random mating. Whereas observed heterotypic pair formation were less than that expected under random mating, homotypic pair formation were either equal or more than that expected under random mating. Duration of reproductive activities differed significantly (P ≤ 0.05) among test populations. It was concluded that reduced pair formation, elongated duration of courtship, and reduced mating between populations of A. marginata, indicate partial or incomplete pre-mating reproductive isolation.

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Dart shooting influences paternal reproductive success in the snail Helix aspersa (Pulmonata, Stylommatophora)

Cited by 49 publications

References 13 publications

Histopathological Changes Induced by Metaldehyde in Eobania vermiculata (Müller 1774)

Histopathological Changes Induced by Metaldehyde in Eobania vermiculata (Müller 1774)

Common effect of the mucus transferred during mating in two dart-shooting snail species from different families

Evaluation of pre-mating reproductive isolation in Archachatina marginata from three populations in the humid tropics

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