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In its different forms or stages of life, the three-spined stickleback can be a bottom-feeder (most commonly chironomid larvae and amphipods) [18] or a planktonic feeder in lakes or in the ocean; it can also consume terrestrial prey fallen to the surface. [19] It can cannibalize eggs and fry. [20]
A three-spined stickleback like those used in Tinbergen's experiments. One example of fixed action patterns is the courtship and aggression behaviours of the male stickleback, particularly the three-spined stickleback, during mating season, described in a series of studies by Niko Tinbergen.
A second hypothesis is that the stickleback distraction display arose from displaced foraging behavior and as such represents faux-foraging. [8] In support of this hypothesis was the finding that all-male, all-female, and mixed foraging groups responded equally to the display, which would not be expected if it were indeed mimicking a sexual ...
Three-spined stickleback fish have been a frequently studied species in ecological speciation.. Ecological speciation is a form of speciation arising from reproductive isolation that occurs due to an ecological factor that reduces or eliminates gene flow between two populations of a species.
Gasterosteus aculeatus Linnaeus, 1758 (Three-spined stickleback) †Gasterosteus crenobiontus Băcescu & R. Mayer, 1956 (Techirghiol stickleback) Gasterosteus islandicus Sauvage, 1874 (Iceland stickleback) Gasterosteus microcephalus Girard, 1854 (Smallhead stickleback) Gasterosteus nipponicus Higuchi, Sakai & A. Goto, 2014 [1]
The maximum size of the best-known species, the three-spined stickleback (Gasterosteus aculeatus), is about 4 inches, but few of them are more than 3 inches long. They mature sexually at a length of about 2 inches. [11] Most other stickleback species are roughly similar in size or somewhat smaller.
In another fish, the three-spined stickleback, it has been shown that females desire MHC diversity in their offspring, which affects their mate choice. [28] Female Savannah sparrows, Passerculus sandwichensis, chose MHC-dissimilar males to mate with. Females are more likely to engage in extra-pair relationships if paired with MHC-similar mates ...
The smallhead stickleback (Gasterosteus microcephalus), or resident threespined stickleback, is a fish species, which widespread in the basin of the Pacific Ocean: Japan, also Mexico. Freshwater demersal fish, up to 5.5 cm (2.2 in) length. Habits small streams, where feeds on aquatic insects and other invertebrates. [1]