Fundulus majalis (Walbaum 1792)

Fundulus majalis és una espècie de peix de la família dels fundúlids i de l'ordre dels ciprinodontiformes.

Morfologia

Els mascles poden assolir els 15 cm de longitud total.^[2]

Distribució geogràfica

Es troba a Nord-amèrica: Estats Units i el nord del Golf de Mèxic.^[2]

Referències

Bibliografia

• Moyle, P. i J. Cech.: Fishes: An Introduction to Ichthyology, 4a edició, Upper Saddle River (Nova Jersey, Estats Units): Prentice-Hall. Any 2000.
• Nelson, J.: Fishes of the World, 3a edició. Nova York, Estats Units: John Wiley and Sons. Any 1994.
• Wheeler, A.: The World Encyclopedia of Fishes, 2a edició, Londres: Macdonald. Any 1985.

Enllaços externs

• «Fundulus majalis». Catalogue of Life. (anglès) (anglès)
• ITIS (anglès)

The striped killifish (Fundulus majalis), also called the striped mummichog, is a North American species of fundulid killifish. It lives in salt and brackish waters in shallow coastal regions from New Hampshire to Florida, and in the northern Gulf of Mexico.^[2]

It exhibits sexual dimorphism, with the males having vertical black stripes and the mature females having horizontal black stripes along the sides of their silver-colored bodies. Juvenile females have vertical stripes, however, and one or two vertical stripes remain at the end of the tail even on adult females. Striped killifish typically reach lengths of up to 6 in (15 cm), occasionally 7 in (18 cm).

Tidepool survival techniques

Several striped killifish on land

In Feb 1916, Popular Science Monthly had a news article on research being done by Professor S. O. Mast of the zoological department of Johns Hopkins University.^[3] The professor was studying the Fundulus majolisis and noted their ability to survive the draining of ocean tide pools. These fish would swim in and out of the tide pools on regular intervals, somehow knowing when to swim out before the tidewaters drained from the pools. If for some reason the outlet of the pool were to close off as the tide went out, the fish would quickly swim around the tide pool randomly looking for an alternate escape route.

If the fish cannot find an exit, they actually leave the water and flop over land to reach the ocean. Professor Mast saw scores and scores of these fish leave large tide pools and travel across sand bars up to 12 feet wide and six inches tall. The fish nearly always leave the pool on the side towards the ocean, and are able to travel straight towards the ocean rather than flopping around randomly. At the time it was not known how the fish are able to find the ocean so readily.

After about three minutes of becoming trapped in a rapidly disappearing tide pool, a dense aggregation of fish form on the side of the pool towards the ocean, and swim up and down the side of the pool. Then, in groups of about twelve, the fish leave the pool and head across land towards the sea.

References

• Striped mummichog, Gulf of Maine Research Institute.
• Phil Maier, Striped Killifish, South Carolina Dept. of Natural Resources

Fundulus majalis es una especie de peces de la familia de los fundúlidos en el orden de los ciprinodontiformes.

Morfología

Los machos pueden llegar a los 15 cm de longitud total.^[3]​

Distribución geográfica

Se encuentran en Norteamérica: Estados Unidos y el norte del Golfo de México.^[3]​

Referencias

Bibliografía

• Moyle, P. y J. Cech.: Fishes: An Introduction to Ichthyology, 4ª edición, Upper Saddle River, Nueva Jersey, Estados Unidos: Prentice-Hall. 2000.
• Nelson, J.: Fishes of the World, 3ª edición. Nueva York, Estados Unidos: John Wiley and Sons. 1994.
• Wheeler, A.: The World Encyclopedia of Fishes, 2ª edición, Londres: Macdonald. 1985.

Fundulus majalis Fundulus generoko animalia da. Arrainen barruko Fundulidae familian sailkatzen da.

Banaketa

Erreferentziak

• FishBase.org

Ikus, gainera

• Fundulus
• Fundulidae

Fundulus majalis è un pesce d'acqua salmastra e marina appartenente alla famiglia dei Fundulidae.

Distribuzione e habitat

Questi pesci sono diffusi lungo le coste americane dell'Atlantico (East Coast), fino al Golfo del Messico, dove è riscontrabile la loro presenza in baie ed estuari.

Descrizione

Questi pesci presentano un corpo allungato, piuttosto compresso ai fianchi, ma scattante e muscoloso; le pinne dorsale ed anale sono opposte e simmetriche, posizionate vicino al robusto peduncolo caudale. La pinna caudale è a delta. La livrea presenta fianchi e dorso bronzei con riflessi metallici, ventre argenteo. Il maschio ha lungo i fianchi numerose linee verticali nere sottili, con confini irregolari, la femmina invece una o pìiù linee verticali nere e una caratteristica chiazza nera vicino alla radice della pinna caudale. Le pinne sono giallastre o azzurrognole, tendenti al trasparente.
La lunghezza massima si attesta sui 18 cm circa.

Etologia

Pur appartenendo al gruppo dei killifish non è un pesce a vita stagionale.

Acquariofilia

L'allevamento in acquario è difficile ma non impossibile. F. majalis ha una distribuzione commerciale limitata ma è diffuso tra gli appassionati dei killifish.

Fundulus majalis is een straalvinnige vissensoort uit de familie van killivisjes (Fundulidae).^[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1792 door Walbaum.

條帶底鱂，為輻鰭魚綱鯉齒目鯉齒亞目底鱂科的其中一種，為溫帶魚類，分布於北美洲美國新罕布夏州至墨西哥灣北部淡水、半鹹水流域，體長可達15公分，棲息在沿岸沼澤濕地、海灣、河口，生活習性不明，可做為觀賞魚。

參考文獻

• Froese, Rainer & Daniel Pauly, eds. (2014). Fundulus majalis in FishBase. 2014年10月版本