First in situ observation of an aphyonid fish (Teleostei, Ophidiiformes, Bythitidae)
| Autor: | Mackenzie E. Gerringer, Bruce C. Mundy, Astrid B. Leitner, Patricia Fryer, Jørgen G. Nielsen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
geography
Teleostei geography.geographical_feature_category 010504 meteorology & atmospheric sciences biology Seamount 04 agricultural and veterinary sciences Oceanography Ophidiiformes biology.organism_classification Aphyonidae 01 natural sciences Habitat Continental margin Ridge Archipelago 040102 fisheries 0401 agriculture forestry and fisheries Geology 0105 earth and related environmental sciences |
| Zdroj: | Deep Sea Research Part II: Topical Studies in Oceanography. 150:164-169 |
| ISSN: | 0967-0645 |
| Popis: | Aphyonids are poorly-known, live-bearing brotulas (Ophidiiformes, Bythitidae) that until recently were considered to be in a distinct family, Aphyonidae. A single, ca. 9.3 cm total length aphyonid observed during a remotely-operated vehicle survey in the Mariana Archipelago at 2504.2 m on Explorer Ridge (20.68152°N, 145.08750°E) is the first seen alive in its natural habitat. Collection to verify its identification was not possible, but based on observations it was a species of either Barathronus or Nybelinella. The fish swam 1–10 cm over sediment between rocks and small boulders on a 45° talus slope. Swimming speeds were consistently slow, 0.33 ± 0.15 body lengths per second, and the fish appeared to be neutrally buoyant. Although there are few other records of aphyonid-clade fishes in the Pacific away from continental margins, this observation suggests that they will be found elsewhere in the basin when appropriate methods are used to detect these small fishes in the high-relief, rugose habitats of central Pacific oceanic islands and seamounts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect