Drymaeus tripictus

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Drymaeus tripictus
Drymaeus tripictus color patterns.png
Drymaeus tripictus
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
clade Sigmurethra
Superfamily:
Orthalicoidea
Family:
Bulimulidae
Genus:
Drymaeus
Species:
D. tripictus
Binomial name
Drymaeus tripictus
Albers, 1857
Synonyms
  • Bulimulus rhodotremaMartens, 1868 (junior synonym)
  • Bulimus tripictusAlbers, 1857 (original combination)
  • Drymaeus (Mesembrinus) tripictus(Albers, 1857)· accepted, alternate representation

Drymaeus tripictus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Bulimulidae. [1]

Contents

Specimens vary in color patterns, but can be identified by their ventricose shape, broad bands of spots and an apex and peristome of bright rose coloration. [2] Some specimens have white or translucent dots on the body whorl. [3]

Similar species

The reproductive system of D. tripictus, and Drymaeus costarricenses are similar, suggesting these species are closely related. [4] Two other species - Drymaeus irazuensis and Drymaeus gabbi - also have bright rose coloured peristomes, but there is no description of their reproductive apparatus in the scientific literature, therefore the taxonomic relationship is not certain yet. [3]

Distribution

D. tripictus is an extremely rare land snail species. This snail is endemic from the central Costa Rican highlands between an altitude of 1300-1700 m. [2] [5]

Ecology

These snails are more active during the night and until early morning. D. tripictus likely feed on algae and cyanobacteria present on moss or lichen. They can be found in the shrubs and understory of the forest. The species is more abundant in the primary forest (0.017 individuals/m2) than in secondary forests (0.001 individuals/m2). [3]

Reproduction

Drymaeus tripictus reproductive system Drymaeus tripictus reproductive system.png
Drymaeus tripictus reproductive system

As all other members of this family, D. tripictus has an hermaphrodite reproductive system, meaning one specimen has both male and female genitalia.

Mating process of Drymaeus tripictus (Source: Zaidett Barrientos) DT MATING.png
Mating process of Drymaeus tripictus (Source: Zaidett Barrientos)

The mating process is by shell mounting, where the male acting individual slides on top of the female acting individual, followed by multiple stimulatory activity, where the radula of the male acting individual scrapes the shell and the mantle collar of the female acting individual. Finally the male acting individual turns its head, allowing contact between the gonopores, but the phallus is not everted. This process takes between 60-75 minutes and no role switching takes place. Hatching occurs between June and July. [3] This is the only description available for a species of the genus Dryameus.

Related Research Articles

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Bulimulidae is a taxonomic family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, terrestrial pulmonate gastropod molluscs in the superfamily Orthalicoidea.

<i>Amphidromus</i> A genus of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae

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<i>Drymaeus</i> Genus of gastropods

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Orthalicidae

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<i>Rabdotus dealbatus</i>

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<i>Hyperaulax ridleyi</i>

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<i>Amphibulima browni</i> Species of gastropod

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<i>Bulimulus tenuissimus</i> Species of gastropod

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<i>Drymaeus laticinctus</i> Species of gastropod

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<i>Amphibulima rubescens</i> Species of mollusc

Amphibulima rubescens is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Amphibulimidae.

Drymaeus multifasciatus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.

Drymaeus liliaceus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.

Drymaeus inconspicuus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.

<i>Drymaeus cecileae</i> Species of gastropod

Drymaeus cecileae is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.

<i>Drymaeus strigatus</i> Species of gastropod

Drymaeus strigatus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.

<i>Drymaeus serperastrus</i> Species of gastropod

Drymaeus serperastrus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.

References

  1. ↑ MolluscaBase eds. (2020). MolluscaBase. Drymaeus tripictus (Albers, 1857). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1065142 on 2020-09-20
  2. 1 2 Martens, E. von. 1892-1901. Land and freshwater Mollusca. In F. D. Godman & O. Salvin (Eds.), Biologia Centrali-Americana (pp. 1-706). London: Taylor & Francis.
  3. 1 2 3 4 Barrientos, Z. (2016). Reproductive system, mating behavior and basic ecology of an extremely rare tropical snail: Drymaeus tripictus (Stylommatophora: Bulimulidae). Revista de Biología Tropical, 64(1), 55-68.
  4. ↑ Breure, A. S. H., & Eskens, A. (1981). Notes on and descriptions of Bulimulidae (Mollusca, Gastropoda), II. Zoologische Verhandelingen, 186, 1-111.
  5. ↑ Pilsbry, H. A. (1899). American Bulimulidae: North Ame- rican and Antillean Drymaeus, Leiostracus, Orthali- cinae and Amphibuliminae. Manual of Conchology, (2)12, 1-258.
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