Navicula dermochelycola sp. nov., presumably an exclusively epizoic diatom on sea turtles Dermochelys coriacea and Lepidochelys olivacea from French Guiana
, , and | Jun 18, 2020
About this article
Article Category: Research Article
Published Online: Jun 18, 2020
Page range: 132 - 139
Received: Sep 09, 2019
Accepted: Dec 05, 2019
DOI: https://doi.org/10.1515/ohs-2020-0012
© 2020 Faculty of Oceanography and Geography, University of Gdańsk, Poland
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1a–e (LM)
Figure 2a–g (SEM)
Figure 3a–d (SEM)
Figure 4a–c (SEM)
Features of Navicula dermochelycola sp. nov. (French Guiana, Yalimapo, DC). Comparison with several other Navicula taxa (see text)
| n |
21 | nd | nd | nd | nd |
| Valve shape | linear elliptic with capitate apices | linear to linear-lanceolate, strongly capitate, narrow ends | lanceolate, protracted and rostrate apices | elliptical-lanceolate, rostrate apices | lanceolate, rostratecapitate |
| Length |
15–25 (19 ± 3.0) |
32–50 |
35–40 |
30–40 |
12–22 |
| Stria density | 24.5–30 (28 ± 1.6) | 11–14 (15) | 12–13 | 14–16 | 20–24; 24–28 on apices |
| Areolae on the valve face | radiate to arched striae, apically elongate areolae | striae bent and radiate around the center, apically elongate areolae | radiate to arched striae, apically elongate areolae | striae arched, parallel near apices | striae radiate to arched |
| Striae around the central area | alternatively short and long | all of the same length | alternatively short and long | alternatively short and long | of irregular length |
| Central area | distinct, bow-tie/butterfly like, expanded, not really asymmetrical | expanded and asymmetrical | relatively restricted | relatively large, symmetrical | small |
| Ethology | epizoic, marine | freshwater, cosmopolitan | freshwater | brackish | marine, in the mucilage of the apical slit of |
| Reference | present study | Grunow in |
Taassen 1975 |
Sampled turtles and geographical location
| oceanic basin | location | species | nesting or subadult | juvenile | latitude | longitude |
|---|---|---|---|---|---|---|
| Caribbean Sea |
Grande Anse d'Arlet | CM | 8 | 14°30ʹ10.95ʹʹN | 61°05ʹ13.01ʹʹW | |
| Anse du Bourg d’Arlet | CM | 22 | 14°29ʹ13.43ʹʹN | 61°04ʹ58.89ʹʹW | ||
| EI | 1 | |||||
| Macabou | DC | 1 | 14°29ʹ55.06ʹ'N | 60°49ʹ25.42ʹʹW | ||
| Les Sâlines | EI | 1 | 14°23ʹ45.55ʹʹN | 60°52ʹ14.74ʹʹW | ||
| Anse Noire | EI | 1 | 14°31ʹ42.47ʹʹN | 61°5ʹ20.36ʹʹW | ||
| CM | 1 | |||||
| Prêcheur | EI | 1 | 14°49ʹ60ʹʹN | 61°12ʹ0ʹʹW | ||
| CM | 1 | |||||
| Carbet | CM | 4 | 14°42ʹ0ʹʹN | 61°10ʹ60ʹʹW | ||
| Saint Pierre | CM | 2 | 14°43ʹ60ʹʹN | 61°10ʹ60ʹʹW | ||
| EI | 1 | |||||
| Petite Anse d’Arlet | CM | 1 | nd | nd | ||
| Equatorial Atlantic Ocean |
Yalimapo | DC | 16 | 5°44ʹ47.96ʹʹN | 53°56ʹ37.36ʹʹW | |
| CM | 13 | |||||
| Aztèque | CM | 4 | 5°41ʹ12.57ʹʹN | 53°43ʹ49.07ʹʹW | ||
| DC | 1 | |||||
| Cayenne | DC | 3 | 4°55ʹ10.54ʹʹN | 52°16ʹ5.31ʹʹW | ||
| LO | 6 | |||||
| South Pacific Ocean |
Te Mana O Te Moana (Moorea) | CM | 2 | 17°29ʹ39.639ʹʹS | 149°52ʹ13.527ʹʹW | |
| Tiaraunu (Tetiaroa) | CM | 7 | 16°59ʹ21.5ʹʹS | 149°34ʹ48.1ʹʹW | ||
| Oroatera (Tetiaroa) | CM | 1 | 16°59ʹ37.4ʹʹS | 149°32ʹ24.0ʹʹW | ||
| Onetahi (Tetiaroa) | CM | 9 | 17°01ʹ17.9ʹʹS | 149°35ʹ45.2ʹʹW | ||
| Tahiti | EI | 1 | nd | nd | ||
| Afareaitu (Moorea) | EI | 2 | 17°33ʹS | 149°48ʹW | ||
| Nu’uroa (Moorea) | CM | 1 | 17°32ʹ5.793ʹʹS | 149°54ʹ10.325ʹʹW | ||
| Haapiti (Moorea) | CM | 1 | 17°33ʹ56.2ʹʹS | 149°52ʹ09.9ʹʹW | ||
| Atiha (Moorea) | CM | 1 | 17°35ʹ09.7ʹʹS | 149°50ʹ26.8ʹʹW | ||
| Tetiaroa | EI | 2 | nd | nd | ||
| LO | 1 | nd | nd | |||
| Tikehau | CM | 1 | 15°S | 148° 10'W | ||
| Moorea Lagoon | EI | 1 | nd | nd | ||
| Maatea (Moorea) | EI | 1 | 17°35ʹ13.92ʹʹS | 149°48ʹ20.7036ʹʹW | ||
| Opunohu (Moorea) | CM | 1 | 17°30ʹ28.7352ʹʹS | 149°51ʹ23.9328ʹʹW | ||
| Temae (Moorea) | CM | 1 | nd | nd | ||
| Moorea | EI | 1 | nd | nd | ||
| Papetoai (Moorea) | CM | 1 | nd | nd | ||
| Horoatera (Teti aroa) | CM | 1 | nd | Nd |