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Parhyale Hawaiensis
''Parhyale hawaiensis'' is an amphipod crustacean species that is used in developmental and genetic analyses. It is categorized as an emerging model organism as the main biological techniques necessary for the study of an organism have been established. Habitat ''P. hawaiensis'' is a detritovore that has a circumtropical, worldwide, intertidal, and shallow-water marine distribution, and it may occur as a species complex. It has been reported to occur in large populations (more than 3,000 per square metre) on decaying mangrove leaf material in environments subjected to rapid changes in salinity. The ability to tolerate rapid temperature and osmotic changes allows this species to thrive under typical laboratory conditions. It is a robust species and is being considered for aquaculture. Life cycle Females produce embryos every 2 weeks once they reach sexual maturity. Embryogenesis is relatively short, lasting about 10 days at . Females normally brood the embryos in a ventra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceedings Of The United States National Museum
The Smithsonian Contributions and Studies Series is a collection of serial periodical publications produced by the Smithsonian Institution, detailing advances in various scientific and societal fields to which the Smithsonian Institution has made contributions. History The Smithsonian Institution began publishing consolidated compilations of quarto-sized papers in 1848, under the name ''Smithsonian Contributions to Knowledge''.History of Scholarly Publishing , ''''. In 1862 -sized papers called ''Smithsonian Miscellaneous Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genesis (journal)
''Genesis: The Journal of Genetics and Development'' (often styled ''genesis'') is a peer-reviewed scientific journal of genetics and developmental biology. It was established as ''Developmental Genetics'' in 1979 and obtained its current title in 2000. In addition to original research Research is "creativity, creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular att ... articles, the journal also publishes letters to the editor and technology reports relevant to the understanding of the functions of genes. The editor-in-chief is Sally A. Moody ( George Washington University). Abstracting and indexing The journal is abstracted and indexed in: According to the '' Journal Citation Reports'', the journal has a 2020 impact factor of 2.487, ranking it 22nd out of 41 journals in the category "Developmental Biology" an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brood Pouch (Peracarida)
The marsupium or brood pouch, is a characteristic feature of Peracarida, including the orders Amphipoda, Isopoda, Cladocera, and Cumacea. It is an egg chamber formed by oostegites, which are appendages that are attached to the coxae (first segment) of the first pereiopods. Females lay their eggs directly into the brood chamber, and the young will develop there, undergoing several moults before emerging as miniature adults referred to as mancae. Males have no marsupium. References {{malacostraca-stub Crustacean anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventral
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek language, Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axis, anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal. Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that is radially symmetrical will have no anterior surface, but can still have a description that a part is close to the middle ("proximal") or further from the middle ("distal"). International organisations have determined vocabularies that are often used as standard vocabular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryogenesis
An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres are arranged as a solid ball that when reaching a certain size, called a morula, takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating into the endometrial lining of the womb. Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that will form all of the different parts of the body. Neurulation forms the nervous sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Maturity
Sexual maturity is the capability of an organism to reproduce. In humans it might be considered synonymous with adulthood, but here puberty is the name for the process of biological sexual maturation, while adulthood is based on cultural definitions. Most multicellular organisms are unable to sexually reproduce at birth (animals) or germination (e.g. plants): depending on the species, it may be days, weeks, or years until they have developed enough to be able to do so. Also, certain cues may trigger an organism to become sexually mature. They may be external, such as drought (certain plants), or internal, such as percentage of body fat (certain animals). (Such internal cues are not to be confused with hormones, which directly produce sexual maturity – the production/release of those hormones is triggered by such cues.) Role of reproductive organs Sexual maturity is brought about by a maturing of the reproductive organs and the production of gametes. It may also be accompanied ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryo
An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres are arranged as a solid ball that when reaching a certain size, called a morula, takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating into the endometrial lining of the womb. Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that will form all of the different parts of the body. Neurulation forms the nervous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parhyale Hawaiensis - Life Cycle
''Parhyale'' is a genus of amphipod crustaceans, containing the following species: *''Parhyale aquilina'' (Costa, 1853) *''Parhyale basrensis'' Salman, 1986 *''Parhyale eburnea'' Krapp-Schickel, 1974 *''Parhyale explorator'' Arresti, 1989 *''Parhyale fascigera'' Stebbing, 1897 *''Parhyale hachijoensis'' Hiwatari, 2002 *'' Parhyale hawaiensis'' (Dana, 1853) *''Parhyale inyacka'' K. H. Barnard, 1916 *''Parhyale iwasai'' (Shoemaker, 1956) *''Parhyale multispinosa'' Stock, 1987 *''Parhyale penicillata'' Shoemaker, 1956 *''Parhyale philippinensis'' Hiwatari, 2002 *''Parhyale plumicornis'' (Heller, 1866) *''Parhyale ptilocerus ''Parhyale'' is a genus of amphipod crustaceans, containing the following species: *'' Parhyale aquilina'' (Costa, 1853) *''Parhyale basrensis'' Salman, 1986 *'' Parhyale eburnea'' Krapp-Schickel, 1974 *'' Parhyale explorator'' Arresti, 1989 *' ...'' (Derzhavin, 1937) References Gammaridea Taxa named by Thomas Roscoe Rede Stebbing {{Amphipod-st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
