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| Definitions of the following characters are given here. |
| Species: Mantidactylus alutus | |
| Genus: Mantidactylus |
| Family: Mantellidae |
| Species in Frost database: Mantidactylus alutus |
| ID information: AY848236.1 / zsm1017/2004 |
| NCBI name: Mantidactylus alutus |
| Ecomorphological guild (s): benthic, psammonic |
| Collector: no data |
| Country: Madagascar |
| Locality 1: n.a. |
| Locality 2: Foret de Tampina |
| Coordinate 1: no data |
| Coordinate 2: no data |
| Aquatic habitat: lotic |
| Gosner stage: 36 |
| Total length: 44.835 mm |
| Body length: 13.354 mm |
| Tail length: 31.481 mm |
| Maximum body heigth: 6.186 mm |
| Maximum body width: 7.863 mm |
| Snout-nostril-distance: 1.242 mm |
| Snout-spiraculum-distance: 7.727 mm |
| Eye diameter: 1.556 mm |
| Internostrial distance: 2.745 mm |
| Interorbital distance: 4.435 mm |
| Maximum height of tail: 6.857 mm |
| Maximum heigth of dorsal fin: 2.298 mm |
| Maximum heigth of ventral fin: 1.95 mm |
| Maximum height of tail muscle: 4.36 mm |
| Maximum width of tail muscle: 3.913 mm |
| Oral disc width: 4.181 mm |
| Position of oral disc: anteroventral |
| Disc emarginated: no |
| LKRF: 4(2-4)/3(1) |
| Anterior keradont rows: 4 |
| Posterior keradont rows: 3 |
| Anterior gaps: yes |
| Anterior rows with gaps: 3 |
| Posterior gaps: yes |
| Posterior rows with gaps: 1 |
| Relative length of anterior rows: 2>3>1>4 |
| Relative length of posterior rows: 2>1>3 |
| Anterior papillae: 1b |
| Posterior papillae: 2b |
| MPRF: (1)/1-2/1-2 |
| Shape of marginal papillae: triangular |
| Submarginal papillae: no |
| Jaw sheaths present: yes |
| Jaw sheaths serrated: clearly |
| Upper jaw sheath shape: m |
| Lower jaw sheath shape: v |
| Thickness of jaw sheaths: robust |
| Nostrils present: yes |
| Position of nostrils: anterolateral |
| Direction of nostrils: anterolaterally |
| Shape of nostrils: ovoid |
| Nostrils with structure: torus |
| Position of eyes: dorsolaterally |
| Direction of eyes: dorsolaterally |
| Position of spiracle: mss |
| Shape of spiracle: wall absent |
| Position of vent tube: medial b |
| Shape of vent tube: displaced anteriorly and dorsally |
| Attachment of vent tube to ventral fin: a |
| Lateral line system visible: yes |
| Position of lateral line system: dorsolaterally |
| Relative heigth of fins: d>v |
| Dorsal fin reaches onto body: no |
| Margin of ventral fin: a |
| Margin of dorsal fin: g |
| Tail tip: triangular |
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