Question
Download Solution PDFA specimen or other element selected from the original material to serve as nomenclatural type when no holotype was designated at the time of publication or as long as it is missing is called
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is lectotype
Concept:
- A nomenclatural type is a specimen or element to which the name of a taxon is permanently attached, serving as a reference point for the application of the name.
- When no holotype was designated at the time of publication, or if the holotype is missing, a lectotype is selected from the original material to serve as the nomenclatural type.
Explanation:
- Lectotype: A lectotype is a specimen or other element selected from the original material to serve as the nomenclatural type when no holotype was designated at the time of publication or if the holotype is missing. The lectotype is chosen from the syntypes or from the original material cited by the original author.
- Holotype: A holotype is the single specimen designated by the original author at the time of publication as the type specimen of a species.
- Isotype: An isotype is a duplicate of the holotype specimen. Since the question involves a situation where no holotype was designated, isotype is not applicable.
- Paratype: A paratype is any additional specimen cited in the original description that is not the holotype. Paratypes are used to show the variability within the species but do not serve as the primary reference point for the name.
Additional Information
- The selection of a lectotype ensures that the name of the taxon is permanently linked to a specific specimen, thereby providing stability and clarity in the naming of species.
- If a lectotype needs to be designated, it should be done from the original material (syntypes) that the original author used for the description of the species.
- The process of designating a lectotype is governed by the rules set out in the International Code of Nomenclature for algae, fungi, and plants (ICN) or the International Code of Zoological Nomenclature (ICZN), depending on the organism in question.
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