Sökning: onr:"swepub:oai:lup.lub.lu.se:1af7fb95-c1c5-4fe8-b16d-9b93ac6c1c96" >
Invasion rate and p...
Invasion rate and population characteristics of the round goby Neogobius melanostomus: effects of density and invasion history
-
Azour, Farivar (författare)
-
- van Deurs, Mikael (författare)
- Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Technical University of Denmark
-
Behrens, Jane (författare)
-
visa fler...
-
Carl, Henrik (författare)
-
Hussy, Karin (författare)
-
Greisen, Kristian (författare)
-
Ebert, Rasmus (författare)
-
Moller, Peter Rask (författare)
-
visa färre...
-
(creator_code:org_t)
- Inter-Research Science Center, 2015
- 2015
- Engelska.
-
Ingår i: Aquatic Biology. - : Inter-Research Science Center. - 1864-7782 .- 1864-7790. ; 24:1, s. 41-52
- Relaterad länk:
-
http://dx.doi.org/10... (free)
-
visa fler...
-
https://www.int-res....
-
https://lup.lub.lu.s...
-
https://doi.org/10.3...
-
visa färre...
Abstract
Ämnesord
Stäng
- Round goby Neogobius melanostomus is currently one of the most wide-ranging invasive fish species in Europe and North America. The present study demonstrates how the distribution of round goby has expanded from 2008 to 2013 at a rate of about 30 km yr(-1) along the Danish coastline in the western Baltic Sea. Further analyses showed that fish from an established high-density round goby population were slow-growing and displayed poorer condition (weight at age and hepatosomatic index) compared to fish sampled from recently invaded locations (i.e. at the forefront of the distribution range). The established population revealed a broad age distribution and a 1:1 gender ratio, while fish from a recently invaded site were primarily of intermediate ages with a male-biased gender ratio. Otolith analyses suggested that the oldest individuals from the recently invaded area experienced superior growth conditions only in the most recent years, suggesting immigration into the area as adults. Our results suggest that intraspecific competition for food may cause continued dispersal of the species and that population demographics likely relate to invasion history.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Range expansion
- Density-dependent growth
- HSI
- Gender ratio
- Otolith
- Dispersal
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas