| Autor: |
Rutledge, Kelsi Marie |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Rutledge, Kelsi Marie. (2018). A new guitarfish from the Gulf of California (Batoidea: Rhinobatidae). UCLA: Biology 0123. Retrieved from: http://www.escholarship.org/uc/item/4d8200pq |
| Popis: |
A new guitarfish is described based on 75 specimens obtained from the Gulf of California. Sixty-three morphometric measurements were taken on all specimens. Measurements were also taken on four congeners in replicates of 10 individuals. A principal component analysis and linear discriminant analysis were performed on these morphometric data for discrimination and classification. This new species is most similar to Pseudobatos productus but differs in having a narrower disc width (30-35% vs. 36-38% TL), shorter distance from nostril to disc margin (2.8%-4.0% vs. 4.2-5.2% TL), narrower disc width at anterior orbit (12-19% vs. 20-22% TL) and a narrower tip of nose width (3% vs. 4-6% TL). This species is also less densely scaled between the orbits and has less pronounced rostral thorns when compared to Pseudobatos productus. A key to the guitarfishes of the Gulf of California is provided. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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