umbonate


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Related to umbonate: punctiform

umbonate

(ŭm′bə-nāt′, ŭm-bō′nĭt)
adj.
Having or resembling a knob or knoblike protuberance.
References in periodicals archive ?
Temperature and salinity also acted synergistically to impact growth and survival of D-veliger larvae and growth of umbonate larvae.
The greatest increases in length of larvae occurred at the maximum salinity level for D-veliger and umbonate larvae.
Umbonate and pediveliger larvae are able to withstand greater ranges in salinity compared with spat.
The majority of king scallop larvae < 135-[micro]m length were straight hinge larvae, early umbonate larvae dominated between 135-170 [micro]m, late umbonate larvae dominated between 170-215 [micro]m, with larvae above this size generally being eyespotted.
Based on 26 years of experience observing and identifying scallop larvae in mixtures of bivalve larvae from natural plankton samples, the principal features, arranged in order of their practical value, for identification of both umbonate and straight hinge scallop larvae have been provided in Table 4.