General information |
||
| Gambusia affinis (Baird & Girard, 1853) | ||
| Common name | Mosquitofish, Gambusia | |
| Synonyms |
- |
|
| IUCN Red List status (2014) | Least Concern (LC) |
|
| Habitat | Freshwater |
|
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Euteleostei; Neoteleostei; Acanthomorpha; Acanthopterygii; Percomorpha; Atherinomorpha; Cyprinodontiformes; Poeciliidae. |
|
| Geographical distribution | India; China; Japan; Indonesia; Bangladesh; Malaysia; Sri Lanka; Pakistan; Philippines; Singapore; Thailand; Taiwan; Vietnam; Israel; Iraq; Egypt; Myanmar; Syria; Hong Kong; Laos; Cambodia; Nepal; Afghanistan; Kazakhstan; Uzbekistan; Turkey; Russia; Australia; New Zealand; Papua New Guinea; South Africa; Madagascar; Kenya; Morocco; Ghana; Sudan; Ivory Coast; France; Spain; Portugal; Italy; Greece; Bulgaria; Ukraine; Romania; Georgia; USA; Mexico; Canada; American Soma; Argentina; Peru; Chile; Hawaii; Puerto Rico; Fiji; French Polynesia; Guam; Kiribati; Marshall Islands; Micronesia; Samoa; Solomon Islands; Vanuatu; Albania; Hungary; Serbia; Central African Republic; Comoros; Mauritius; Mayotte; Zambia; Zimbabwe |
|
| Occurrence | Introduced: India, China, Japan, Bangladesh, Malaysia, Sri Lanka, Pakistan, Philippines, Singapore, Thailand, Taiwan, Vietnam, Israel, Iraq, Egypt, Myanmar, Syria, Hong Kong, Laos, Cambodia, Nepal, Afghanistan, Kazakhstan, Uzbekistan, Turkey, Russia, Australia, New Zealand, Papua New Guinea, South Africa, Madagascar, Kenya, Morocco, Ghana, Sudan, Ivory Coast, France, Spain, Portugal, Italy, Greece, Bulgaria, Ukraine, Romania, Georgia, Canada, American Soma, Argentina, Peru, Chile, Hawaii, Puerto Rico, Fiji, French Polynesia, Guam, Kiribati, Marshall Islands, Micronesia, Samoa, Solomon Islands, Vanuatu, Albania, Hungary, Serbia, Central African Republic, Comoros, Mauritius, Zimbabwe Not established: Indonesia, Zambia Native: USA, Mexico Questionable: Mayotte |
|
| Importance | ||
| Remarks | Metacentric chromosome 1 is largest in females. |
|
Karyological information |
||
| Geographical area of study | Ponds in Santa Barbara and San Diego, California, and College Station, Texas. | |
| Source of chromosomes | Gill epithelium, testes and spleen. |
|
| Number of specimens with sex | 48 mature and immature (15 male, 33 female). |
|
| Diploid chromosome number | 48 |
|
| Karyotype formula | 2sm+46t/a in male and 1m+2sm+45a in female. |
|
| Fundamental arm number | - |
|
| Chromosome length | 0.30 to 1.09 micron. |
|
| Sex chromosome | Female heterogamety of WZ (female) and ZZ (male) sex types. |
|
| Chromosome staining/banding/FISH | - |
|
| Reference(s) |
Chen TR, Ebeling AW (1968). Karyological evidence of female heterogamety in the Mosquitofish, Gambusia affinis. Copeia, 1968 (1): 70-75. |
|