|
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skeleton Shrimp
Caprellidae is a family of amphipods commonly known as skeleton shrimps. Their common name denotes the threadlike slender body which allows them to virtually disappear among the fine filaments of seaweed, hydroids and bryozoans. They are sometimes also known as ghost shrimps. Description Caprellids are easily recognizable from other amphipods because of their slender elongated bodies. Their bodies can be divided into three parts: the cephalon (head), the pereon (thorax), and the abdomen. The pereon comprises most of the length of the body. It is divided into seven segments known as pereonites. The cephalon is usually fused to the first pereonite; while the highly reduced and almost invisible abdomen is attached to the posterior of the seventh pereonite. They possess two pairs of antennae, with the first pair usually longer than the second pair. The cephalon contains mandibles, maxillae, and maxillipeds which function as mouthparts. Each pereonite has a pair of appendages k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caprella
''Caprella'' is a large genus of skeleton shrimps belonging to the subfamily Caprellinae of the family Caprellidae. It includes approximately 170 species. The genus was first established by Jean-Baptiste Lamarck in his great work ''Système des animaux sans vertèbres'' (1801) to describe ''Cancer linearis'' (now '' Caprella linearis'') and ''Squilla ventricosa'' (now '' Phtisica marina''). *'' Caprella acanthifera'' Leach, 1814 *'' Caprella acanthogaster'' Mayer, 1890 *'' Caprella acanthopoda'' Guiler, 1954 *''Caprella advena'' Vassilenko, 1974 *'' Caprella aino'' Utinomi, 1943 *''Caprella alaskana'' Mayer, 1903 *'' Caprella alaskensis'' Holmes, 1904 *''Caprella algaceus'' Vassilenko, 1967 *''Caprella andreae'' Mayer, 1890 *''Caprella angulosa'' Mayer, 1903 *''Caprella angusta'' Mayer, 1903 *''Caprella arimotoi'' Takeuchi, 1993 *''Caprella astericola'' Jankowski & Vassilenko, 1973 *''Caprella bacillus'' Mayer, 1903 *''Caprella bathyalis'' Vassilenko, 1972 *''Caprella bathyta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corophiidea
Corophiida is an infraorder of amphipods that contains the two parvorders Caprellidira (skeleton shrimp and whale lice) and Corophiidira. In 2003-2013 this group was treated as a suborder, Corophiidea, which in turn had been re-established to contain the taxa previously treated as the suborder Caprellidea, together with some families formerly placed in the suborder Gammaridea. More recently, the group was made part of the new suborder Senticaudata.Lowry, J.K. & Myers, A.A. (2013A Phylogeny and Classification of the Senticaudata subord. nov. (Crustacea: Amphipoda) Zootaxa ''Zootaxa'' is a peer-reviewed scientific mega journal for animal taxonomists. It is published by Magnolia Press ''Magnolia'' is a large genus of about 210 to 340The number of species in the genus ''Magnolia'' depends on the taxonomic view ... 3610 (1): 1-80. References External links * Amphipoda Arthropod infraorders {{Amphipod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_body_plan_anatomy.png "Click for more on -> Skeleton Shrimp")
