Branchiopoda

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Branchiopoda

[‚braŋ·kē′äp·ə·də]
(invertebrate zoology)
A subclass of crustaceans containing small or moderate-sized animals commonly called fairy shrimps, clam shrimps, and water fleas.

Branchiopoda

 

a subclass of the class Crustacea. The head is not fused with the front thoracic segments. There is no mandibular palp, and both the maxilla and mandible are weakly developed. The thoracic limbs are foliate and nonsegmented as a rule; they are used for locomotion, breathing, and bringing food to the mouth. The nerve stems of the ventral nerve cord are widely spaced. There are from four to 11 (rarely as many as 19) thoracic segments. The cephalothoracic carapace is shaped like a shield or a bivalve shell or is entirely absent. The animals live mainly in fresh water. The subclass comprises three orders: Anostraca, Phyllopoda, and Lipostraca (represented only by extinct forms).

References in periodicals archive ?
Population genetic structure of a California endemic branchiopod, Branchinecta sandiegoensis.
And I realized that this brain actually comprises three successive neuropils in the optic regions, which is a trait of malacostracans, not branchiopods," he said.
The thousands of large and small pools that form annually are an ideal study area for freshwater branchiopods capable of surviving drought by forming resting eggs.
Co-occurrence of branchiopods in ephemeral pools is not unusual.
The occurrence of large branchiopod crustaceans in perennial pans: a research note.
We have also obtained partial sequences of phenoloxidases from the branchiopods Triops longicaudatus and Artemia franciscana, crustaceans that synthesize extracellular hemoglobin for oxygen transport.
Thus, the cardiac pacemaker mechanism of branchiopods is still uncertain.
Tadpole shrimp (Triops longicaudatus LeConte) are primitive branchiopod crustaceans that face extreme environmental conditions in the ephemeral desert pools that they inhabit.
Thus De los Rios-Escalante (2010), based on Niemeyer & Cereceda (1984) who used climatic, topographic and hydrological characteristics, proposed the following four regions in according to a zoogeographical review of inland water Branchiopods and Copepods: Northern Chile (18[degrees]-27[degrees]S); Central Chile (27[degrees]-37[degrees]S), Northern and Central Patagonia (37[degrees]-51[degrees]S) and Southern Patagonia (51[degrees]-55[degrees]S).
The particular style of molar ornamentation links the Mount Cap fossils to a clade of crown-group (pan)crustaceans that includes branchiopods, malacostracans, and hexapods, and thus provides a crucial calibration point for arthropod phylogeny, as well as the earliest record of an arthropod with a sophisticated particle-feeding ecology (Harvey and Butterfield 2008).
In cooperation with natural heritage program members in all 50 states, NatureServe has compiled, and maintains, a detailed database of over 21,000 plant and animal species in the United States, including nearly 16,200 vascular plants, approximately 2,550 native vertebrate animal species (including mammals, birds, reptiles, amphibians, and freshwater fishes), and a wide spectrum of invertebrates (including "all 2,600 species in the following groups: freshwater mussels, freshwater snails, crayfishes, large branchiopods, butterflies and skippers, underwing moths, tiger beetles, and dragonflies and damselflies").