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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]
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 only exception is the far larger fifteen-spined stickleback (Spinachia spinachia), which can reach 22 cm (approx. 8.8 inches). [12] Body form varies with habitat: sticklebacks in shallow lakes have developed a deep body specialized to enable feeding on benthic invertebrates, whilst those in deep oligotrophic lakes have adapted to feed on ...
Gasterosteus doryssus is an extinct species of freshwater stickleback fish that inhabited inland freshwater habitats of the North American Great Basin during the Miocene.It is known from thousands of articulated fossil skeletons, comprising various age classes and two different ecomorphs, discovered in diatomite deposits of the Truckee Formation near Hazen, Nevada.
The Icelandic threespine stickleback (Gasterosteus islandicus) is a freshwater fish, and one of the few vertebrate species endemic to Iceland. In some literature it is considered as a subspecies of G. aculeatus, [2] though several authorities offer it full species status. [3] [4] It was first described by French biologist Henri Émile Sauvage ...
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]
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.