Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/52464
Title: Spatial Distribution of Shelf- And SlopeDwelling Fishes Collected by Bottom Longline off Lanzarote and FuerteVentura, Canary Islands
Authors: Uiblein, Franz
Bordes Caballero,Fernando 
Castillo, Ricardo
Ramos, A. G. 
UNESCO Clasification: 510208 Pesca
Keywords: Depth distribution
Depth‐size
Spawning aggregation
Reproductive timing
Mora moro, et al
Issue Date: 1998
Journal: Marine Ecology 
Abstract: A total of 1789 fish belonging to 38 families and 73 species were collected at depths between 18 and 1102 m during 216 bottom longline operations off Lanzarote and Fuerteventura, Canary Islands, between February 1994 and December 1995. For each species the depth distribution is provided. Length‐weight and depth‐size relationships are reported for three shelf‐dwelling species. The bigger‐deeper relationship found in two of them contrasts with the bigger‐shallower pattern of the deeper living trichiurid Lepidopus caudatus. In November 1997, nine additional bottom longline operations were carried out off eastern Fuerteventura at depths between 805 and 1217 m. In this area, after earlier studies in October 1995, a spawning aggregation of the morid Mora moro was encountered for the second time. The catches of 1997 revealed a strongly male‐biased sex ratio. Also, the males showed a significantly lower gonadosomal index than two years earlier. These findings indicate slight interannual variations in reproductive timing and an earlier arrival of male Mora moro at the spawning grounds. Clear variations in the number of fish collected at adjacent sites possibly reflect a preference for distinct microhabitats. Preliminary evidence of local upwelling of cold water above the spawning grounds is provided by satellite imagery.
URI: http://hdl.handle.net/10553/52464
ISSN: 0173-9565
Source: Marine Ecology [ISSN 0173-9565],v. 19, p. 53-66
Appears in Collections:Artículos
Show full item record

SCOPUSTM   
Citations

16
checked on Jun 13, 2021

WEB OF SCIENCETM
Citations

14
checked on Jun 13, 2021

Page view(s)

47
checked on Jun 13, 2021

Google ScholarTM

Check


Share



Export metadata



Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.