English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/133316
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Spawning habitat selection by the common cuttlefish Sepia officinalis in the Cíes Islands (Northwest Spain)

AuthorsGuerra, Ángel ; Hernández-Urcera, Jorge; Garci, Manuel E. ; Sestelo, M.; Regueira, Marcos ; Gilcoto, Miguel ; González, Ángel F.
KeywordsHabitat selection
Spawning habitat
Sepia officinalis
NE Atlantic
Issue Date2016
PublisherElsevier
CitationFisheries Research 183: 44-54 (2016)
AbstractWe evaluated specific habitat features (bottom substrate type, depth, temperature, season and latitude-longitude) at random locations in the Cíes Islands (Galician Atlantic Islands National Park, Northwest Spain) to determine their impact on Sepia officinalis spawning habitat use. We performed underwater visual transects via scuba diving. In total, 94 transects were conducted between April 30, 2012 and July 17, 2015. Habitat features were evaluated as predictors of the presence/absence of egg clusters using Generalised Additive Models. Statistical analyses revealed the following: (a) the probability of finding eggs was significantly higher on hard bottom substrate type containing sea fans and sea tube worms; (b) the sectors where the egg presence was highest were the most shelters zones of Bajo de Viños and Piedra del Borrón, two hard bottom shoals covered by sea fans and sea worms and located in the central Cíes Islands or Faro Island; (c) The preferential depth ranged from 8 to 13 m; (d) as temperatures rose, the probability of finding eggs decreased, which was a sign of the seasonality of the spawning event of the species; and (e) eggs were most common in the winter. A total of 18 additional non-random underwater visual transects were then performed in the Viños and Borrón shoals between December 10, 2014 and August 20, 2015. We calculated the number of egg clusters found in two fenced areas (0.04 ha) located in Viños and Borrón, which showed that Viños was a most suitable spawning habitat than Borrón. The number of eggs per cluster varied from 4 to 82. The spawning period for this species lasted from the beginning of December until the end of June, when bottom temperature ranged from 12.5 °C to 14.75 °C. These microhabitat data reveal indicators of common cuttlefish spawning habitat utilisation and should help identify targets for habitat improvement projects and ecosystem management approaches within this national park and elsewhere
Description11 páginas, 5 figuras, 5 tablas
Publisher version (URL)http://dx.doi.org/10.1016/j.fishres.2016.04.023
URIhttp://hdl.handle.net/10261/133316
DOI10.1016/j.fishres.2016.04.023
ISSN0165-7836
Appears in Collections:(IIM) Artículos
Files in This Item:
File Description SizeFormat 
Spawning_habitat_selection_2016.pdf794,83 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.