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Sphaeriidae
Sphaeriidae is a family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ... of small to minute freshwater bivalve molluscs in the order (biology), order Sphaeriida. In the US, they are commonly known as pea clams or fingernail clams.William H. Heard (biologist), Heard, William H. 1977. Reproduction of fingernail clams (Sphaeriidae: ''Sphaerium'' and ''Musculium''). Malacologia, 16: 421-455. The Sphaeriidae is actually an important group of freshwater invertebrates, seeing as they play a huge role in the energy flow and the nutrient cycling within aquatic ecosystems, in which they constitute a food item for organisms of higher trophic levels and even contribute to the bioturbation of sediments which can help create a physical resource for many other species that utilize the shells. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eupera
''Eupera'' is a genus of bivalves belonging to the family Sphaeriidae Sphaeriidae is a family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, .... The species of this genus are found in America and Africa. Species: *'' Eupera bahamensis'' *'' Eupera bahiensis'' *'' Eupera barbadensis'' *'' Eupera crassa'' *'' Eupera cubensis'' *'' Eupera degorteri'' *'' Eupera doellojuradoi'' *'' Eupera elliptica'' *'' Eupera ferruginea'' *'' Eupera gravis'' *'' Eupera guaraniana'' *'' Eupera haitiensis'' *'' Eupera iguazuensis'' *'' Eupera insignis'' *'' Eupera klappenbachi'' *'' Eupera meridionalis'' *'' Eupera missouriensis'' *'' Eupera modioliforme'' *'' Eupera moquiniana'' *'' Eupera onestae'' *'' Eupera ovata'' *'' Eupera parvula'' *'' Eupera pittieri'' *'' Eupera platensis'' *'' Eupera port ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euglesa
''Euglesa'' is a genus of bivalves belonging to the family Sphaeriidae Sphaeriidae is a family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, .... Species: *'' Euglesa adamsi'' *'' Euglesa atkinsoniana'' *'' Euglesa cara'' *'' Euglesa casertana'' *'' Euglesa cavatica'' *'' Euglesa centrale'' *'' Euglesa chankensis'' *'' Euglesa clausi'' *'' Euglesa compressa'' *'' Euglesa conventus'' *'' Euglesa coreana'' *'' Euglesa edlaueri'' *'' Euglesa equilateralis'' *'' Euglesa etheridgei'' *'' Euglesa ethiopica'' *'' Euglesa fallax'' *'' Euglesa ferruginea'' *'' Euglesa floresiana'' *'' Euglesa fultoni'' *'' Euglesa globularis'' *'' Euglesa granum'' *'' Euglesa gurvichi'' *'' Euglesa hallae'' *'' Euglesa henslowana'' *'' Euglesa hinzi'' *'' Euglesa interstitialis'' *'' Euglesa korniushini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afropisidium
''Afropisidium'' is a genus of bivalves belonging to the family Sphaeriidae Sphaeriidae is a family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, .... The species of this genus are found in Southern America, Africa and Southeastern Asia. Species: *'' Afropisidium aslini'' *'' Afropisidium chandanbariensis'' *'' Afropisidium chilensis'' *'' Afropisidium clarkeanum'' *'' Afropisidium ellisi'' *'' Afropisidium giraudi'' *'' Afropisidium hodgkini'' *'' Afropisidium javanum'' *'' Afropisidium nevillianum'' *'' Afropisidium pirothi'' *'' Afropisidium sterkianum'' *'' Afropisidium stoliczkanum'' *'' Afropisidium sundanum'' References Sphaeriidae Bivalve genera {{Sphaeriidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Musculium
''Sphaerium'' is a genus of very small freshwater clams, aquatic bivalve molluscs in the family Sphaeriidae Sphaeriidae is a family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, ..., known as the fingernail clams. The small clams in this genus are unusual in that many of them, such as '' Sphaerium corneum'', can climb around underwater on aquatic plants, using their long and strong foot. Selected species The following species are included in the genus ''Sphaerium'': *'' Sphaerium asiaticum'' *†'' Sphaerium beckmani'' *'' Sphaerium bequaerti'' *'' Sphaerium corneum'' – European fingernail clam *'' Sphaerium lacustre'' *'' Sphaerium nitidum'' – Arctic fingernail clam *'' Sphaerium novaezelandiae'' *'' Sphaerium nucleus'' *'' Sphaerium ovale'' *'' Sphaerium rhomboideum'' *'' Sphaerium ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pisidium
''Pisidium'' is a genus of very small or minute freshwater clams known as pill clams or pea clams, aquatic bivalve molluscs in the family Sphaeriidae, the pea clams and fingernail clams. In some bivalve classification systems, the family Sphaeriidae is referred to as Pisidiidae, and occasionally ''Pisidium'' species are grouped in a subfamily known as Pisidiinae. ''Pisidium'' and taphonomy In large enough quantities, the minute shells of these bivalves can affect environmental conditions, and this change in conditions can positively affect the ability of organic remains in the immediate environment to fossilize (one aspect of taphonomy). For example, in the Dinosaur Park Formation, the fossil remains of hadrosaur eggshells are rare. This is because the breakdown of tannins from the local coniferous vegetation caused the ancient waters to be acidic, and therefore usually eggshell fragments dissolved in the water before they had a chance to be fossilized. Hadrosaur eggshell fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaerium Corneum
''Sphaerium corneum'', also known as the European fingernailclam, is a very small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams. Description The shell is fairly globular and can grow up to 9–13.5 mm in size. The color of the shell is usually a brown to gray with the juveniles being a yellow color. Their shells exhibit striae, thin parallel rows of elevated lines. Revisiondate: 3/23/2007 Ecology These small clams are found in shallow, freshwater habitats with slow moving waters, including freshwater lakes, rivers and creeks. As with most bivalves, ''Sphaerium corneum'' is mainly a filter feeder and thus prefers more eutrophic waters that provide a greater food source. These clams have exhibited a unique ability to climb up plants and structures around their habitat to find more optimal locations for feeding. They also are known to deposit feed in times of low current or food availability. This species has shown a preference ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaerium
''Sphaerium'' is a genus of very small freshwater clams, aquatic bivalve molluscs in the family Sphaeriidae, known as the fingernail clams. The small clams in this genus are unusual in that many of them, such as ''Sphaerium corneum'', can climb around underwater on aquatic plants, using their long and strong foot. Selected species The following species are included in the genus ''Sphaerium'': *'' Sphaerium asiaticum'' *†'' Sphaerium beckmani'' *'' Sphaerium bequaerti'' *''Sphaerium corneum ''Sphaerium corneum'', also known as the European fingernailclam, is a very small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams. Description The shell is fairly globular and can grow up to 9–13.5& ...'' – European fingernail clam *'' Sphaerium lacustre'' *'' Sphaerium nitidum'' – Arctic fingernail clam *'' Sphaerium novaezelandiae'' *'' Sphaerium nucleus'' *'' Sphaerium ovale'' *'' Sphaerium rhomboideum'' *'' Sphaerium rivi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaeriida
Sphaeriida is an order of bivalves belonging to the class Bivalvia. Families: * Neomiodontidae * Sphaeriidae Sphaeriidae is a family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, ... References Bivalves Bivalve orders {{bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalve
Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consisting of a hinged pair of half-bivalve shell, shells known as valve (mollusc), valves. As a group, bivalves have no head and lack some typical molluscan organs such as the radula and the odontophore. Their gills have evolved into ctenidium (mollusc), ctenidia, specialised organs for feeding and breathing. Common bivalves include clams, oysters, Cockle (bivalve), cockles, mussels, scallops, and numerous other family (biology), families that live in saltwater, as well as a number of families that live in freshwater. Majority of the class are benthic filter feeders that bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciomyzidae
The family (biology), family Sciomyzidae belongs to the typical flies (Brachycera) of the order (biology), order Fly, Diptera. They are commonly called marsh flies, and in some cases snail-killing flies due to the food of their larvae. Here, the Huttoninidae, Phaeomyiidae and Tetanoceridae are provisionally included in the Sciomyzidae. Particularly the latter seem to be an unequivocal part of this group and are ranked as tribe (biology), tribe of subfamily Sciomyzinae by most modern authors, while the former two are very small lineages that may or may not stand outside the family and are provisionally ranked as subfamilies here. Whether the Salticellinae and the group around ''Sepedon'' warrant recognition as additional subfamilies or are better included in the Sciomyzinae proper is likewise not yet entirely clear. Altogether, the main point of contention is the relationship between the "Huttoninidae", "Phaeomyiidae", Sciomyzidae ''sensu stricto'', and the Helosciomyzidae which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasite
Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted structurally to this way of life. The entomologist E. O. Wilson characterised parasites' way of feeding as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as Armillaria mellea, honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the Orobanchaceae, broomrapes. There are six major parasitic Behavioral ecology#Evolutionarily stable strategy, strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), wikt:trophic, trophicallytransmitted parasitism (by being eaten), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
