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Morphometry and growth of sea pen species from dense habitats in the Gulf of St. Lawrence, eastern Canada

Morphometry and growth of sea pen species from dense habitats in the Gulf of St. Lawrence, eastern Canada


Titill: Morphometry and growth of sea pen species from dense habitats in the Gulf of St. Lawrence, eastern Canada
Höfundur: Murillo, F.J.
MacDonald, B.W.
Kenchington, E.
Campana, Steven   orcid.org/0000-0002-7453-3761
Sainte-Marie, B.
Sacau, M.
Útgáfa: 2018-02-15
Tungumál: Enska
Umfang: 366-382
Háskóli/Stofnun: Háskóli Íslands
University of Iceland
Svið: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Deild: Líf- og umhverfisvísindadeild (HÍ)
Faculty of Life and Environmental Sciences (UI)
Birtist í: Marine Biology Research;14(4)
ISSN: 1745-1000
1745-1019 (eISSN)
DOI: 10.1080/17451000.2017.1417604
Efnisorð: Sea pens; Vulnerable marine ecosystems; Kóraldýr; Vöxtur (lífeðlisfræði); Vistkerfi; Sjávarlíffræði
URI: https://hdl.handle.net/20.500.11815/847

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Tilvitnun:

F.J. Murillo, B.W. MacDonald, E. Kenchington, S.E. Campana, B. SainteMarie & M. Sacau (2018) Morphometry and growth of sea pen species from dense habitats in the Gulf of St. Lawrence, eastern Canada, Marine Biology Research, 14:4, 366-382, DOI: 10.1080/17451000.2017.1417604

Útdráttur:

We examined four species of sea pen (Anthoptilum grandiflorum, Halipteris finmarchica, Pennatula aculeata and Pennatula grandis) collected from the Gulf of St. Lawrence and mouth of the Laurentian Channel, eastern Canada. An exponential length–weight relationship was found for all four species, where growth in weight was progressively greater than growth in length with increasing colony size. Halipteris finmarchica, P. grandis and P. aculeata presented the better allometric fits, explaining over 80% of the variance. In addition, a count of growth increments visible in transverse sections in 86 A. grandiflorum and 80 P. aculeata samples was made. Presumed ages ranged between 5 and 28 years for A. grandiflorum and 2 and 21 years for P. aculeata. Radiocarbon assays were inconclusive and could not be used to confirm these ages; further age validation is required. Radial growth of the rod is slow during the first years, increasing at intermediate sizes of the colony and slowing down again for large colonies. Similar results were obtained from the relationship between colony length and number of growth increments where a logistic model was the best fit to the data. On average Spearman’s rank correlations showed 11% of shared variance between sea pen length or weight and environmental variables. Bottom temperature and salinity, depth and summer primary production were significantly correlated to sea pen size for most species.

Leyfi:

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/bync-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way

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