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Alpheidae (also known as the snapping shrimp, pistol shrimp or alpheid shrimp [citation needed]) is a family within the infraorder caridea characterized by having asymmetrical claws, the larger of which is typically capable of producing a loud snapping sound.
The tiger pistol shrimp lives in burrows in symbiosis with certain goby species such as Cryptocentrus cinctus, Amblyeleotris guttata or Stonogobiops yasha. The shrimp digs and maintains the burrows which are the dens for both animals, while the goby acts as a watchman, warning of danger the shrimp cannot see due to poor eyesight. [8]
In the narrower sense, Synalpheus occur in the eastern Pacific where they are most plentiful and probably originated, and to a lesser extent in the Atlantic and the Indian Ocean; the species placed in Zuzalpheus occur mainly in the western Atlantic where their lineage probably originated, and to a lesser extent in the eastern Atlantic and Indian Ocean, and the eastern Pacific.
Alpheus is a genus of snapping shrimp of the family Alpheidae.This genus contains in excess of 330 species, [1] making this the most species-rich genus of shrimp. [2] Like other snapping shrimp, the claws of Alpheus are asymmetrical, with one of the claws enlarged for making a popping noise. [3]
Also known as pink speckled shrimp goby; scientific name cryptocentrus leptocephalus. Maximum length: 4.7 inches Wild habitat: Australia, Japan, Indonesia, East Pacific, Central/West Pacific.
Metabetaeus lohena is an alpheid scavenger, which will also hunt small anchialine invertebrates. [4] M. lohena grows to lengths of 18 mm and are pale pink to vibrant red in colour. [5] Shrimp possess large claws and a clearly visible mandibular spot. [5] Females once gravid will produce a mass of 20 to 29 eggs. [4]
Cladistic representation of the Mayan linguistic family, going back 4000 years.(The numbers represent proposed historical dates in the Common Era).. In historical linguistics, the tree model (also Stammbaum, genetic, or cladistic model) is a model of the evolution of languages analogous to the concept of a family tree, particularly a phylogenetic tree in the biological evolution of species.
The three most common ways to define the name of a clade: node-based, branch-based and apomorphy-based definition. The tree represents a phylogenetic hypothesis of the relations of A, B and C. A node-based definition could read: "the last common ancestor of A and B, and all descendants of that ancestor