Essays about: "stickleback"
Showing result 6 - 10 of 11 essays containing the word stickleback.
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6. Effect of temporal increases in prey fish abundance on individual growth rates of coastal piscivores
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : Commercial fishing in the Baltic Sea has led to decrease in abundance of large predatory fish and as a result the predation pressure on smaller fish species has been reduced. Three-spined stickleback (Gasterosteus aculeatus) is among the species that have benefited from reduced predation pressure. READ MORE
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7. An ecological study of the migration, food composition and relative abundance of three-spined stickleback (Gasterosteus aculeatus) in a shallow area in Kalmar Sound.
University essay from Linnéuniversitetet/Institutionen för biologi och miljö (BOM)Abstract : The populations of three–spined sticklebacks (Gasterosteus aculeatus) in the Baltic Sea have increased tenfold over the last decade. A large increase in abundance can alter the offshore and coastal food webs. READ MORE
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8. Does eutrophication cause directional genetic selection in three-spined stickleback (Gasterosteus aculeatus)? : A study of multiple Baltic Sea populations.
University essay from Institutionen för livsvetenskaperAbstract : Human-induced eutrophication is indirectly affecting aquatic organisms by altering their environment. This brings on altered selective pressures and could thereby cause changes in the genetic composition of exposed populations. READ MORE
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9. Does eutrophication cause directional genetic selection in three-spined sticklebacks (Gasterosteus aculeatus)? : A study of multiple Baltic Sea populations
University essay from Institutionen för livsvetenskaperAbstract : Human-induced eutrophication is indirectly affecting aquatic organisms by altering their environment. This brings on altered selective pressures and could thereby cause changes in the genetic composition of exposed populations. READ MORE
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10. Evolution toward pollution-resistant ecotypes of Baltic threespine stickleback, Gasterosteus aculeatus, suggested by AFLP markers
University essay from Institutionen för livsvetenskaperAbstract : This study used amplified fragment length polymorphism (AFLP) to detect changes of genetic variation in threespine stickleback exposed to industrial pollution from pulp- and paper mills along the southern east coast of Sweden. A general loss of allelic diversity was associated with exposure (table 3, linear model, F1,4=7.2 [P=0. READ MORE