Description
The triptcrygiid fish Grahamina signata Fricke & Roberts, 1993 was described from 174 specimens collected from several exposed locations around the coast of New Zealand. It was distinguished from the Tasmanian G. gymnota (Scott 1977) by the number of pored scales in the lower lateral line, the number of branches of the supraorbital tentacle, and the colouration of the pectoral-fin base.Examination of new material of G. signata from the Auckland region, and re-examination of type material of G. gymnota, show that the supraorbital tentacle and lower lateral line are not differences of taxonomic significance. Pectoral fin colouration in a published underwater photo of G. gymnota suggests that the colour difference was due to the effects of preservation. We therefore refer G. signata to the synonymy of G. gymnota. This synonymy, in combination with the restricted Tasmanian distribution and dispersal capabilities of the species, suggests that G. gymnota was introduced to Tasmania from New Zealand.
Data Records
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 48 records.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
Versions
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How to cite
Researchers should cite this work as follows:
Clements K (2016): The New Zealand triplefin Grahamina signata (Teleostei; Tripterygiidae): A junior synonym of G.gymnota from Tasmania. v1.1. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Dataset/Occurrence. https://nzobisipt.niwa.co.nz/resource?r=nztriplefin_gymnota&v=1.1
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
This resource has been registered with GBIF, and assigned the following GBIF UUID: d22f7b9a-d2d5-42d2-8b44-adb09b338a25. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.
Keywords
Occurrence; Observation
Contacts
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Geographic Coverage
New Zealand and Tasmania
| Bounding Coordinates | South West [-46.929, -176.3], North East [-35.267, 147.258] |
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Taxonomic Coverage
Tripterygiid triplefins of the Genus Grahamina
| Species | Grahamina gymnota, Grahamina capito, Grahamina nigripenne |
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Sampling Methods
We attempted to identify material examined to genus and species following Fricke & Roberts (1993) and Fricke (1994). Counts and measurements follow Hubb & Lagler (1958). Measurements were performed with digital calipers. Lateral line scale counts included all pored scales. Supraorbital tentacle counts included tentacles greater in length than width. Where possible, lateral line scales and supraorbital tentacles were counted on both sides of the body (thus each specimen has two counts).
| Study Extent | Northern New Zealand (esp. Auckland region) and Tasmania |
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Method step description:
- The total sample sizes of specimens examined for various characters. It was not possible to count pored scales in the lower lateral line of many of the Whatipu G. signata specimens. These pored scales are visible against the darker background pigmentation in darker coloured males and in specimens preserved for a length of time, but not in the lighter coloured females from the Whatipu site.
Bibliographic Citations
- Kendall D. Clements , Laith A. Jawad & Andrew L. Stewart (2000) The New Zealand triplefin Grahamina signata (Teleostei; Tripterygiidae): A junior synonym of G. gymnota from Tasmania, Journal of the Royal Society of New Zealand, 30:4, 373-383, DOI: 10.1080/03014223.2000.9517629 http://dx.doi.org/10.1080/03014223.2000.9517629
Additional Metadata
marine, harvested by iOBIS
| Alternative Identifiers | d22f7b9a-d2d5-42d2-8b44-adb09b338a25 |
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| https://nzobisipt.niwa.co.nz/resource?r=nztriplefin_gymnota |