General Biology. The approximately 20 species of Abudefduf may be divided into planktivores and benthivores and three broadly pantropical clades. Two of the Abudefduf clades are primarily benthivorous and a third clade is composed of planktivores and is the most species-rich. Most diversification has occurred in the last 10 million years within this genus across all clades. A gill (/ ɡ ɪ l / ) is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide.The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The development and neoplastic progression of human astrocytic tumors appears to result through an accumulation of genetic alterations occurring in a relatively defined order. One such alteration is amplification of the epidermal growth factor receptor (EGFR) gene. This episomal amplification occurs in 40-50% of glioblastomas, which also normally express endogenous receptors.
| Microspathodon bairdii | |
|---|---|
Least Concern (IUCN 3.1)[1] | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Family: | Pomacentridae |
| Genus: | Microspathodon |
| Species: | |
| Binomial name | |
| Microspathodon bairdii (T.N. Gill, 1862)[2] | |
| Synonyms | |
| |
Microspathodon bairdii, the bumphead damselfish, is a species of ray-finned fish from the familyPomacentridae. It is found in the eastern Pacific Ocean.
Biology 11 Mrs N Gillespie
Description[edit]
Biology 11 Mrs N Gill Unit
Microspathodon bairdii is a large damselfish reaching 25 centimetres (9.8 in) in standard length.[3] The adults are dark brown or black, have purple eyes and sport a large bump on their foreheads. Juveniles are bright blue on their backs, with orange or yellow on the underside.[4] Hurricane song ebook download torrent download.
Distribution[edit]
Microspathodon bairdii is endemic to the Eastern Pacific where its occurs from the mouth of the Gulf of California in Mexico south to Ecuador. Its range includes the Revillagigedo, Cocos, Malpelo and Galapagos Islands.[1]
Habitat and biology[edit]
Microspathodon bairdii occurs on rocky inshore reefs exposed to wave action and currents, being found down to 15 metres (49 ft). Prehistoric park game download for android. It is most frequently recorded in the vicinity large boulders in the shallow subtidal zone. Chapter 6: "o brave new world!". In the Gulf of Chiriquí, Panamá, the bumphead damselfish is found among huge corals and exposed shallow rocky reefs.[1] It is mainly herbivorous, feeding on algae, but will take a hook baited with animal matter[3] and will readily eat meat in the aquarium.[4] They form pairs to breed and the eggs are laid in crevices in rocks where there is a strong current, on the leeward side of the current. The eggs are hoarded and aerated by the male.[3]
Etymology[edit]
The person that Gill was honouring with the specific name has not been identified but it is very probably Spencer Fullerton Baird who was director of the United States National Museum where the type specimen is located.[5]
References[edit]
- ^ abcAllen, G.; Robertson, R.; Rivera, R.; et al. (2010). 'Microspathodon bairdii'. The IUCN Red List of Threatened Species. 2010: e.T183472A8119307. doi:10.2305/IUCN.UK.2010-3.RLTS.T183472A8119307.en.
- ^Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). 'Microspathodon bairdii'. Catalog of Fishes. California Academy of Sciences. Retrieved 7 October 2018.
- ^ abcFroese, Rainer and Pauly, Daniel, eds. (2018). 'Microspathodon bairdii' in FishBase. June 2018 version.
- ^ ab'Microspathodon bairdii'. Bob Goemans. Retrieved 7 October 2018.
- ^Christopher Scharpf & Kenneth J. Lazara (29 August 2018). 'Subseries OVALENTARIA (Incertae sedis): Family POMACENTRIDAE'. The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 7 October 2018.
External links[edit]
Biology 11 Mrs N Gill Full
- Photos of Microspathodon bairdii on Sealife Collection