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Morphological features of the gorgonian Paramuricea macrospina on the continental shelf and shelf edge (Menorca Channel, Western Mediterranean Sea)
Grinyó, J.; Gori, A.; López-González, P.J.; Santin, A.; Baena, P.; Gili, J.-M. (2018). Morphological features of the gorgonian Paramuricea macrospina on the continental shelf and shelf edge (Menorca Channel, Western Mediterranean Sea). Mar. Biol. Res. 14(1): 30-40. https://dx.doi.org/10.1080/17451000.2017.1375118
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000; e-ISSN 1745-1019
|  |
| Trefwoorden |
Paramuricea macrospina (von Koch, 1882) [WoRMS]
Marien/Kust |
| Author keywords |
Colonial morphology; gorgonian; Paramuricea macrospina; scleritemorphology |
| Auteurs | | Top |
- Grinyó, J.
- Gori, A.
- López-González, P.J.
|
- Santin, A.
- Baena, P.
- Gili, J.-M.
|
|
| Abstract |
Morphological variability in gorgonians is frequent and commonly associated with habitat variability, often resulting in segregated morphotypes. Paramuricea macrospina is an endemic Mediterranean gorgonian species found on rocky bottoms between 40 and 160 m depth and has recently been reported as one of the most abundant species in continental shelf and shelf edge environments. Three different chromatic forms of P. macrospina were observed in the Menorca Channel: a yellow form and a light purple form occurring on maërl beds of the continental shelf, and a dark purple form occurring on rocky substrates of the shelf edge. The objective of the present work is to verify if these P. macrospina forms may represent distinct taxonomic units by analysing differences in colony morphology and sclerite size and shape of the three chromatic forms. No significant differences were found in colony shape, suggesting that environmental variability between the continental shelf and the shelf edge is not influential enough to significantly alter colony morphology. Significant differences in sclerite size and shape were found amongst all forms, suggesting that sclerites may be influenced by environmental conditions. However, the co-occurrence of the yellow and light purple forms side by side on the continental shelf may indicate a certain degree of genetic differentiation. |
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