plastral

[plas-truhl]

adjective

Zoology.

1. of or relating to a plastron.

Word History and Origins

Origin of plastral¹

First recorded in 1885–90; plastr(on) + -al ¹

Example Sentences

The present specimens have carapace lengths of 250 and 238 mm. and plastral lengths of 185 and 176 mm.

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Chelydra serpentina, which may occur sympatrically with C. rossignoni in some parts of Central America, has a narrower plastral bridge and only two barbels beneath the chin.

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Increments in plastral length averaged 68.1 per cent in the year after hatching, 28.6 per cent in the second year and 18.1 per cent in the third year.

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Plastral lengths of the smallest sexually mature male and female in the sample were, respectively, 99 and 107 mm.

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In the Testudinidae the African Kinixys has a movable hinge on the posterior part of the carapace and Pyxis arachnoides of Madagascar has a short, hinged, anterior plastral lobe.

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