Gammarus fossarum | |
---|---|
Gammarus fossarum | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Malacostraca |
Superorder: | Peracarida |
Order: | Amphipoda |
Family: | Gammaridae |
Genus: | Gammarus |
Species: | G. fossarum |
Binomial name | |
Gammarus fossarum (Koch, 1836) | |
Synonyms | |
|
Gammarus fossarum is a species complex of freshwater amphipod crustacean native to Europe. They are abundant members of the macroinvertebrate community, and also used as model organisms for ecotoxicology. [1]
Gammarus fossarum go through nine or ten moults of their exoskeleton before reaching sexual maturity; weighing just 0.1 mg at birth, by adulthood they have a wet weight of 5 to 7 mg. [2] Adult G. fossarum are between 4.5 and 10 mm in length, [3] and weigh up to 41 (females) to 61 (males) mg wet weight. [2]
Gammarus fossarum are widely distributed throughout central and southeastern Europe. [4] They are found in France, [5] Italy, [4] Germany, [6] Switzerland, [7] Austria, [8] Slovenia, [9] Serbia, [10] the Netherlands, [11] Belgium, [12] Hungary, [13] Croatia, [13] Albania, [4] Bulgaria, [4] and Bosnia and Herzegovina. [4]
It was previously thought to be a single species based on morphological characteristics, however genetic and genomic research has revealed additional diversity within G. fossarum. Mitochondrial DNA showed that there were three distinct clades in central Europe, subsequently called types A, B, and C. [14] More recent population genetic analyses on amphipods from across the entire distribution range of G. fossarum have revealed that it is in fact a species complex of at least 80 cryptic species. [4] Thesee analyses found at least six major clades, located in Central Western Europe (CWE), Central Eastern Europe (CEE), South Eastern Europe (SEE), France and Central Europe (CRA-CE-A), Eastern Europe (EE-Q), and Central Europe (CE-B). [4] The clades diverged at least 20 million years ago, during the Miocene. [4] Populations can be highly differentiated even at the regional and local scales due to genetic drift. [15]
Gammarus fossarum are now found also outside their native range. They were detected in the United Kingdom using environmental DNA sampling in 2015. [16]
Gammarus fossarum prefer flowing, well-oxygenated water and are often found in smaller and mid-sized streams, particularly in hilly and mountainous areas. [17] They can be found in densities up to hundreds of individuals per square meter. [3]
Gammarus fossarum are omnivorous. They are known for their shredding of leaf litter detritus that enters streams and waterways from the surrounding forest, but G. fossarum also feed on other macroinvertebrates. [18] In many locations, G. fossarum co-occur with other amphipod species, and the species engage in intraguild predation. [19] G. fossarum are prey for larger aquatic animals, such as fish. [20]
Before mating, male and female G. fossarum form precopulatory pairs and move together in their environments. [21] This behavior lasts for several days and both males and large females have some element of mate choice. [22]
Gammarus fossarum are parasitized by a number of taxa, including acanthocephalans. [23]
Gammarus fossarum are a common animal to use in bioassessment and ecotoxicology. Their survival, [24] growth, [25] reproduction, [26] activity levels, [1] physiology, [1] and food consumption [27] are used as indicators of environmental conditions, including acidity, [27] nanoparticles, [1] wastewater effluent, [26] pesticides, [24] and pharmaceuticals. [25]
Daphnia is a genus of small planktonic crustaceans, 0.2–6.0 mm (0.01–0.24 in) in length. Daphnia are members of the order Anomopoda, and are one of the several small aquatic crustaceans commonly called water fleas because their saltatory swimming style resembles the movements of fleas. Daphnia spp. live in various aquatic environments ranging from acidic swamps to freshwater lakes and ponds.
Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from 1 to 340 millimetres and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far described. They are mostly marine animals, but are found in almost all aquatic environments. Some 1,900 species live in fresh water, and the order also includes the terrestrial sandhoppers such as Talitrus saltator and Arcitalitrus sylvaticus.
Gammarus setosus is a gammarid amphipod that inhabits the northern coasts of both the Atlantic and Pacific oceans. Typically, this crustacean is found in the benthic sub-tidal or low inter-tidal regions. Gammarus setosus reproduces once a year in the autumn.
Gammarus pulex is a species of amphipod crustacean found in fresh water across much of Europe. It is a greyish animal, growing to 21 mm (0.83 in) long.
Gammarus roeselii is a species of freshwater amphipod native to Europe.
Pomphorhynchus laevis is an endo-parasitic acanthocephalan worm, with a complex life cycle, that can modify the behaviour of its intermediate host, the freshwater amphipod Gammarus pulex. P. laevis does not contain a digestive tract and relies on the nutrients provided by its host species. In the fish host this can lead to the accumulation of lead in P. laevis by feeding on the bile of the host species.
Gammarus acherondytes, the Illinois cave amphipod, is a species of crustacean in the family Gammaridae. The crustacean is endemic to the Illinois Sinkhole Plain of Monroe County and St. Clair County, in southwestern Illinois, including Illinois Caverns State Natural Area.
Gammarus is an amphipod crustacean genus in the family Gammaridae. It contains more than 200 described species, making it one of the most species-rich genera of crustaceans. Different species have different optimal conditions, particularly in terms of salinity, and different tolerances; Gammarus pulex, for instance, is a purely freshwater species, while Gammarus locusta is estuarine, only living where the salinity is greater than 25‰.
Gammarus desperatus, commonly known as Noel's Amphipod, is a species of small, amphipod crustacean in the family Gammaridae.
Gammarus hyalelloides is a species of amphipod crustacean in the family Gammaridae. It is endemic to four springs in Jeff Davis County and Reeves County, Texas, and is listed as a vulnerable species on the IUCN Red List.
Daphnia magna is a small planktonic crustacean that belongs to the subclass Phyllopoda.
Dikerogammarus villosus, also known as the killer shrimp, is a species of amphipod crustacean native to the Ponto-Caspian region of eastern Europe, but which has become invasive across the western part of the continent. In the areas it has invaded, it lives in a wide range of habitats and will prey on many other animals. It is fast-growing, reaching sexual maturity in 4–8 weeks. As it has moved through Europe, it threatens other species and has already displaced both native amphipods and previous invaders.
Hyalella azteca is a widespread and abundant species complex of amphipod crustacean in North America. It reaches 3–8 mm (0.12–0.31 in) long, and is found in a range of fresh and brackish waters. It feeds on algae and diatoms and is a major food of waterfowl.
Gammarus lacustris is an aquatic amphipod.
Crangonyx islandicus is a species of groundwater amphipods, endemic to Iceland, which was described in 2006. This species lives in freshwater beneath recent lava fields and is relatively widespread in the geologically youngest parts of Iceland. Morphological data, species distribution, genetic diversity and population structure suggest that this species survived repeated glaciation periods in Iceland in sub-glacial refugia. Considering that this species is most closely related genetically to Crangonyx species from North America, the ancestor of C. islandicus might have colonized Iceland via Greenland.
Gammarus baysali is a cave-dwelling species of freshwater amphipod crustacean, found in Turkey. The species belongs to the broader Gammarus pulex group and was scientifically described in 2013 from Cumayanı Cave, Zonguldak Province.
Gammarus obruki is a species of freshwater amphipod, collected from İnderesi Cave, Bartın Province, Turkey. This species belongs to the Gammarus pulex-group. The most discriminant characters of this species are the presence of prolonged extremities, including a very long antennae, up to 52 segmented flagella, a densely setose fifth peduncle, l flagellar segments of antenna, and a fourth peduncle segment that has no long setae.
Pleistophora mulleri (Pfeiffer) Georgev. 1929 is a parasite of the amphipod Gammarus duebeni celticus. The parasite targets the freshwater shrimp species and has shown higher rates of cannibalism, which in turn, affects biological communities and ecology.
Gammarus mucronatus is a species of scud in the family Gammaridae. It is found in the coasts of the North American Atlantic seaboard and the Gulf of Mexico.
Iphigenellidae is a freshwater family of amphipods in the superfamily Gammaroidea. It is found in the Ponto-Caspian region, which encompasses the Black, Azov, and Caspian Seas.