The Snakes of the Genus Storeria

Trapido, Harold

doi:10.2307/2421382

“…We recovered with high support that Virginia valeriae has a sister relationship to Clonophis , Liodytes , and Seminatrix , and Haldea striatula as sister to Storeria . Absent from our sampling is Storeria hidalgoensis (Taylor, ); however, the validity of this species is questionable because it is considered to be a synonym of Storeria occipitomaculata (Trapido, ).…”

Section: Discussionmentioning

confidence: 99%

Diversification of North American natricine snakes

McVay

¹

,

Flores‐Villela

²

,

Carstens

³

2015

Biol. J. Linn. Soc.

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The phylogeny of thamnophiine snakes has not been fully resolved, largely because previous phylogenetic estimates have been based on incomplete taxon sampling or relied solely on mitochondrial sequence data. To address this deficiency, we collected data from multiple autosomal loci collected from 50 taxa before estimating the most robust phylogeny of Thamnophiini to date. Our findings clarify the relationships of taxa not previously included in molecular analyses and also lend evidence to previously recommended taxonomic revisions. Differences in topological estimates between competing models of evolution were minimal and not strongly supported; however, a multispecies coalescent model of evolution was highly favoured over a concatenated model based on marginal likelihood estimates. Additionally, we estimated the timing of divergence among the three major lineages to have occurred during the Miocene period (approximately 11–14 Mya), followed by a decline in speciation rates in all major lineages.

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“…Therefore, gastropod-eating snakes have longer, more slender distally curved teeth than other snakes (Sazima, 1989;Rossman & Myer, 1990). In some other slug-eating snakes, the most posterior teeth in the maxilla can be enlarged, and sometimes even be slightly grooved (Trapido, 1944). In some other slug-eating snakes, the most posterior teeth in the maxilla can be enlarged, and sometimes even be slightly grooved (Trapido, 1944).…”

Section: Discussionmentioning

confidence: 99%

“…However, a more detailed inspection of the aglyphic colubrids reveals several degrees of partial heterodonty (Taylor, 1942;Trapido, 1944), leading towards a full opisthoglyphic stage, capable of venom injection (Minton & Weinstein, 1987). However, a more detailed inspection of the aglyphic colubrids reveals several degrees of partial heterodonty (Taylor, 1942;Trapido, 1944), leading towards a full opisthoglyphic stage, capable of venom injection (Minton & Weinstein, 1987).…”

Section: Discussionmentioning

confidence: 99%

Lip‐curling in redbelly snakes (Storeria occipitomaculata): functional morphology and ecological significance

Amaral

¹

1999

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Redbelly snakes Storeria occipitomaculata have a characteristic agonistic display involving conspicuous lipcurling and head distortion. The lip-curling and head distortion display is similar to head shape-changes during feeding. Storeria occipitomaculata produced mouth secretions while displaying. Micrographs of maxillae and observation of changes in head con®guration showed that the lip-curling behaviour of S. occipitomaculata is related to the presence of carina-bearing maxillary teeth, which are protruded from the mouth during the display. I compared the behaviour and morphology of this species to other gastropodeating snakes and suggest that these behavioural and morphological characteristics have a two-fold role: in prey capture they aid the capture, the handling, and perhaps the digestion of prey; in predator deterrence they may act as delivery agents for mouth secretions.

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“…Storeria occipitomaculata has teeth like those of other gastropod-eating snakes. In some other slug-eating snakes, the most posterior teeth in the maxilla can be enlarged, and sometimes even be slightly grooved (Trapido, 1944). Moreover, in thamnophiine snakes there seems to be an association between feeding upon soft-bodied slimy prey and the presence of behaviours involving head displays (de Queiroz, 1997).…”

Section: Discussionmentioning

confidence: 99%

Lip-curling in redbelly snakes (Storeria occipitomaculata): functional morphology and ecological significance

Amaral¹

1999

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Redbelly snakes Storeria occipitomaculata have a characteristic agonistic display involving conspicuous lipcurling and head distortion. The lip-curling and head distortion display is similar to head shape-changes during feeding. Storeria occipitomaculata produced mouth secretions while displaying. Micrographs of maxillae and observation of changes in head con®guration showed that the lip-curling behaviour of S. occipitomaculata is related to the presence of carina-bearing maxillary teeth, which are protruded from the mouth during the display. I compared the behaviour and morphology of this species to other gastropodeating snakes and suggest that these behavioural and morphological characteristics have a two-fold role: in prey capture they aid the capture, the handling, and perhaps the digestion of prey; in predator deterrence they may act as delivery agents for mouth secretions.

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The Snakes of the Genus Storeria

Cited by 26 publications

References 0 publications

Diversification of North American natricine snakes

Diversification of North American natricine snakes

Lip‐curling in redbelly snakes (Storeria occipitomaculata): functional morphology and ecological significance

Lip-curling in redbelly snakes (Storeria occipitomaculata): functional morphology and ecological significance

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