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 Cavalluccio marino - Hippocampus

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AutoreMessaggio
Tila
Iniziato Sciamano
Iniziato Sciamano


Femminile Serpente
Numero di messaggi : 1826
Data d'iscrizione : 22.03.10
Età : 39
Località : Prov. CN

MessaggioOggetto: Cavalluccio marino - Hippocampus   Mar 16 Nov 2010 - 14:46

Buon pomeriggio a tutti,

l'idea di inserire questa scheda mi è venuta qualche giorno fa quando ho aggiornato quella del Drago, infatti il cavalluccio marino nella cultura cinese veniva associato ad una specie di drago...

E devo dire per fortuna perchè grazie alla mia curiosità ho scoperto cose molto interessanti di questa piccola e splendida creatura che adesso vado a condividere con voi...

Buona lettura!


FONTE: http://it.wikipedia.org/wiki/Hippocampus

Hippocampus
Da Wikipedia, l'enciclopedia libera.

Il genere Hippocampus (famiglia Syngnathidae) comprende 45 specie di pesci d'acqua salata conosciuti comunemente come cavallucci marini per via della testa che ricorda quella di un piccolo cavallo.

FONTE: http://it.wikipedia.org/wiki/Hippocampus_hippocampus

Hippocampus hippocampus
Da Wikipedia, l'enciclopedia libera.

Il cavalluccio marino (Hippocampus hippocampus Linnaeus, 1758) è un pesce d'acqua salata appartenente alla famiglia Syngnathidae.

Indice
[nascondi]

* 1 Habitat e distribuzione
* 2 Descrizione
* 3 Alimentazione
* 4 Riproduzione
* 5 Curiosità
* 6 Altri progetti
* 7 Note
* 8 Bibliografia
* 9 Collegamenti esterni

Habitat e distribuzione [modifica]

Mar Mediterraneo, Oceano Atlantico orientale dal Golfo di Guinea, Isole Canarie fino alle Isole britanniche meridionali. Spesso reperibile intorno ai 10 metri di profondità, in prossimità di alghe o di Posidonia oceanica a cui si appiglia con la coda.

Descrizione [modifica]

Corpo di colore giallo, talvolta rosso, grigio o marrone. Capo appuntito, piuttosto corto. Non ha escrescenze formate dall'esoscheletro sul corpo, tipiche di altre specie dello stesso genere, come lo H. guttulatus. È dotato della pinna dorsale e delle pinne pettorali, poco sviluppate.
Alimentazione [modifica]

Si nutrono di piccoli crostacei.

Riproduzione [modifica]

È una specie ovovivipara. La femmina, dopo la fecondazione, depone le uova nella tasca posta sul ventre del maschio. A differenza dello H. guttulatus i due sessi non si trattengono, durante l'accoppiamento, avvolgendo la coda.

Curiosità [modifica]

L'ippocampo è il simbolo della Salernitana,squadra di calcio della città di Salerno.

Altri progetti [modifica]

Note [modifica]

1. ^ Project Seahorse. Hippocampus hippocampus. In: IUCN 2010. IUCN Red List of Threatened Species. Versione 2010.1

Bibliografia [modifica]

* (IT)Egidio Trainito, Atlante di flora e fauna del Mediterraneo, 2004, Milano, Il Castello, 2004. ISBN 8880393952
* (IT)Patrick Louisy, Trainito, Egidio (a cura di) Guida all'identificazione dei pesci marini d'Europa e del Mediterraneo, Milano, Il Castello, 2006. ISBN 888039472X



FONTE IMMAGINE: http://it.wikipedia.org/wiki/File:Hippocampus_hippocampus_01.jpg

FONTE: http://en.wikipedia.org/wiki/Seahorse

Seahorse
From Wikipedia, the free encyclopedia

Seahorses compose the fish genus Hippocampus within the family Syngnathidae, in order Syngnathiformes. Syngnathidae also includes the pipefishes. "Hippocampus" comes from the Ancient Greek hippos meaning “horse” and kampos meaning “sea monster”.[2]

There are nearly 50 species of seahorse. They are mainly found in shallow tropical and temperate waters throughout the world. They prefer to live in sheltered areas such as seagrass beds, coral reefs, or mangroves. Colonies have been found in European waters such as the Thames Estuary.[3] From North America down to South America there are approximately four species, ranging from the very small (dwarf seahorses are only about 2.5 centimeters (1 in) to much larger specimens off the Pacific Coast of Central America (the foot-long H. ingens). H. erectus are larger seahorses that range from Nova Scotia to around Uruguay. Three species live in the Mediterranean Sea: H. hippocampus (long snout), H. brevirostris (short snout) and H. fuscus (immigrated from the Red Sea). These fish form territories, with males staying in about 1 square metre (11 sq ft) of their habitat while females range about one hundred times that area. They bob around in sea grass meadows, mangrove stands, and coral reefs where they adopt murky brown and gray patterns to camouflage themselves among the sea grass. During social moments or in unusual surroundings, seahorses turn bright colors.
Contents
[hide]

* 1 Description
* 2 Evolution and fossil record
* 3 Reproduction
o 3.1 Courtship
o 3.2 Gestation
o 3.3 Birth
o 3.4 Questions surrounding reproductive roles
o 3.5 Monogamy
* 4 Feeding habits
* 5 In aquaria
* 6 Use in Chinese medicine
* 7 Taxonomy
o 7.1 Pygmy seahorses
* 8 Cultural references
* 9 References
* 10 Further reading
* 11 External links

[edit] Description


FONTE IMMAGINE: http://en.wikipedia.org/wiki/File:Hippocampus.jpg

Seahorses are named for their equine profile. Although they are bony fish, they do not have scales, but rather a thin skin stretched over a series of bony plates arranged in rings throughout their body. Each species has a distinct number of rings. Seahorses swim upright, another characteristic that is not shared by their close pipefish relatives, which swim horizontally. Seahorses have a coronet on their head, which is distinct to each individual, much like a human fingerprint. They swim very poorly by using a dorsal fin, which they rapidly flutter and pectoral fins, located behind their eyes, which they use to steer. Seahorses have no caudal fin. Since they are poor swimmers, they are most likely to be found resting, with their prehensile tails wound around a stationary object. They have long snouts, which they use to suck up food, and eyes that can move independently of each other, much like a chameleon. Seahorses eat small shrimp, tiny fish and plankton.

[edit] Evolution and fossil record

Anatomical evidence, supported by molecular, physical, and genetic evidence, demonstrates that seahorses are highly modified pipefish. The fossil record of seahorses, however, is very sparse. The best known and best studied fossils are specimens of H. guttulatus (though literature more commonly refers to them under the synonym of H. ramulosus), from the Marecchia River Formation of Rimini Province, Italy, dating back to the Lower Pliocene, about 3 million years ago. The earliest known seahorse fossils are of two pipefish-like species, H. sarmaticus and H. slovenicus from the coprolitic horizon of Tunjice Hills, a middle Miocene lagerstätte in Slovenia dating back about 13 million years.[4] Molecular dating finds that pipefish and seahorses separated during the Late Oligocene. This has led to speculation that seahorses evolved in response to large areas of shallow-water, newly created as the result of tectonic events. The shallow water allowed the expansion of seagrass habitats that selected for the camouflage offered by the seahorses’ upright posture.[5] These tectonic changes occurred in the Western Pacific Ocean suggesting an origin there with molecular data suggesting two later and separate invasions of the Atlantic Ocean.[6]

[edit] Reproduction


Pregnant seahorse, New York Aquarium
FONTE IMMAGINE: http://en.wikipedia.org/wiki/File:Tehotny_morsky_konik.jpg

The male seahorse is equipped with a brood pouch on the ventral, or front-facing, side. When mating, the female seahorse deposits up to 1,500 eggs in the male's pouch. The male carries the eggs for anywhere from 9 to 45 days until they emerge, expelling fully-developed, miniature seahorses in the water. Once the seahorse babies are released into the water, the male's role is done and he offers no further care [7].

[edit] Courtship

Before breeding, seahorses court for several days. Scientists believe the courtship behavior synchronizes the animals' movements so that the male can receive the eggs when the female is ready to deposit them. During this time they may change color, swim side by side holding tails or grip the same strand of sea grass with their tails and wheel around in unison in what is known as a “pre-dawn dance". They eventually engage in a “true courtship dance" lasting about 8 hours, during which the male pumps water through the egg pouch on his trunk which expands and opens to display its emptiness. When the female’s eggs reach maturity, she and her mate let go of any anchors and snout-to-snout, drift upward out of the seagrass, often spiraling as they rise. The female inserts her ovipositor into the male’s brood pouch and deposits dozens to thousands of eggs. As the female releases her eggs, her body slims while his swells. Both animals then sink back into the seagrass and she swims away.

[edit] Gestation

The male fertilizes the eggs, which embed in the pouch wall and become enveloped by tissue.[8] The male supplies the eggs with prolactin, the same hormone responsible for milk production in pregnant mammals. The pouch provides oxygen as well as a controlled environment incubator. The eggs then hatch in the pouch where the salinity of the water is regulated; this prepares the newborns for life in the sea.[9][10] Throughout gestation, which in most species requires two to four weeks, his mate visits him daily for “morning greetings”. They interact for about 6 minutes, reminiscent of courtship. The female then swims away until the next morning, and the male returns to vacuuming up food through his snout.[9]

Research published in 2007 indicates the male releases sperm into the surrounding sea water during fertilization, and not directly into the pouch as previously thought.[11]

[edit] Birth

The number of young released by the male seahorse averages 100-200 for most species, but may be as low as 5 for the smaller species, or as high as 1,500. When the fry are ready to be born, the male expels them with muscular contractions. He typically gives birth at night and is ready for the next batch of eggs by morning when his mate returns. Like almost all other fish species, seahorses do not nurture their young after birth. Infants are susceptible to predators or ocean currents which wash them away from feeding grounds or into temperatures too extreme for their delicate bodies. Fewer than .5% of infants survive to adulthood, explaining why litters are so large. These survival rates are actually fairly high compared to other fish, because of their protected gestation, making the process worth the great cost to the father. The eggs of most other fish are abandoned immediately after fertilization.[10]
[edit] Questions surrounding reproductive roles

Reproduction is energetically costly to the male. This brings into question why the sexual role reversal even takes place. In an environment where one partner incurs more energy costs than the other, Bateman's principle suggests that the lesser contributor takes the role of the aggressor. Male seahorses are more aggressive and sometimes “fight” for female attention. According to Amanda Vincent of Project Seahorse, only males tail-wrestle and snap their heads at each other. This discovery prompted further study of energy costs. To estimate the female’s direct contribution, researcher Heather D. Masonjones, associate professor of biology at the University of Tampa, chemically analyzed the energy stored in each egg. To measure the burden on the male, Masonjones measured its oxygen consumption. By the end of incubation, the male consumed almost 33% more oxygen than before mating. The study concluded that the female's energy expenditure while generating eggs is twice that of males during incubation[9] confirming the standard hypothesis.

Why the male seahorse (and other members of Syngnathidae) carries the offspring through gestation is unknown, though some researchers[citation needed] believe it allows for shorter birthing intervals, in turn resulting in more offspring. Given an unlimited number of ready and willing partners, males have the potential to produce 17 percent more offspring than females in a breeding season. Also, females have “time-outs” from the reproductive cycle that are 1.2 times longer than those of males. This seems to be based on mate choice, rather than physiology. When the female’s eggs are ready, she must lay them in a few hours or eject them into the water column. Making eggs is a huge cost to her physically, since they amount to about a third of her body weight. To protect against losing a clutch, the female demands a long courtship. The daily greetings help to cement the bond between the pair.
[edit] Monogamy

One common misconception about seahorses is that they mate for life. Many species of seahorses form pair bonds that last through at least the breeding season. Some species show a higher level of mate fidelity than others. [12] [13] However, many species readily switch mates when the opportunity arises. Hippocampus abdominalis and Hippocampus breviceps have been shown to bred in groups, showing no continuous mate preference. Many more species mating habits haven't been studied, so it is unknown how many species are actually monogamous, or how long those bonds actually last. [14]

Although monogamy within fish is not common, it does appear to exist for some. In this case, the mate guarding hypothesis may be an explanation. This hypothesis states that “males remain with a single female because of ecological factors that make male parental care and protection of offspring especially advantageous.”[15] Because the rates of survival for newborn seahorses are so low, incubation is essential. Though not proven, males could have taken on this role because of the lengthy period the females require to produce their eggs. If males incubate while females prepare the next clutch (amounting to 1/3 of body weight), they can reduce the interval between clutches.

[edit] Feeding habits

Seahorses feed on small crustaceans floating in the water or crawling on the bottom. With excellent camouflage and a lot of patience, seahorses ambush prey that float within striking range. Mysid shrimp and other small crustaceans are favorites, but some seahorses have been observed eating other kinds of invertebrates and even larval fish.

[edit] In aquaria

While many aquarium hobbyists keep seahorses as pets, seahorses collected from the wild tend to fare poorly in home aquaria. Many eat only live foods such as brine shrimp and are prone to stress, which damages their immune systems and makes them susceptible to disease.

In recent years, however, captive breeding has become more popular. Such seahorses survive better in captivity, and are less likely to carry diseases. They eat frozen mysidacea (crustaceans) that are readily available from aquarium stores,[16] and do not experience the stress of moving out of the wild. Although captive-bred seahorses are more expensive, they take no toll on wild populations.

Seahorses should be kept in an aquarium to themselves, or with compatible tank-mates. Seahorses are slow feeders, and fast, aggressive feeders will leave them without food.[16]

Seahorses can co-exist with many species of shrimp and other bottom-feeding creatures. Gobies also make good tank-mates. Avoid eels, tangs, triggerfish, squid, octopus, and sea anemones.[17]

Animals sold as "freshwater seahorses" are usually the closely related pipefish, of which a few species live in the lower reaches of rivers. The supposed true "freshwater seahorse" called H. aimei was not a real species, but a name sometimes used for Barbour's and Hedgehog seahorses. The latter is a species that can be found in brackish waters, but not actually a freshwater fish.[18]

[edit] Use in Chinese medicine

Seahorse populations are thought to have been endangered in recent years by overfishing and habitat destruction. The seahorse is used in traditional Chinese herbology, and as many as 20 million seahorses may be caught each year and sold for this purpose.[19] Medicinal seahorses are not readily bred in captivity as they are susceptible to disease and have somewhat different energetics from aquarium seahorses. Seahorses are also used as medicines by the Indonesians, the Central Filipinos, and many other ethnic groups around the world.

Import and export of seahorses has been controlled under CITES since May 15, 2004. However, Indonesia, Japan, Norway, and South Korea have chosen to opt out of the trade rules set by CITES.

The problem may be exacerbated by the growth of pills and capsules as the preferred method of ingesting medication as they are cheaper and more available than traditional, individually tailored prescriptions of raw medicinals but the contents are harder to track. Seahorses once had to be of a certain size and quality before they were accepted by TCM practitioners and consumers. But declining availability of the preferred large, pale and smooth seahorses has been offset by the shift towards prepackaged medicines, which make it possible for TCM merchants to sell previously unused juvenile, spiny and dark-coloured animals. Today almost a third of the seahorses sold in China are prepackaged. This adds to the pressure on the species.[20]

[edit] Taxonomy

* Genus Hippocampus
o Big-belly seahorse, H. abdominalis Lesson, 1827 (New Zealand and south and east Australia)
o Winged seahorse, H. alatus Kuiter, 2001
o West African seahorse, H. algiricus Kaup, 1856
o Narrow-bellied seahorse, H. angustus Günther, 1870
o Barbour's seahorse, H. barbouri Jordan & Richardson, 1908
o Pygmy seahorse, H. bargibanti Whitley, 1970 West Pacific area (Indonesia, Philippines, Papua New Guinea, Solomon Islands, etc)
o False-eyed seahorse, H. biocellatus Kuiter, 2001
o Réunion seahorse, H. borboniensis Duméril, 1870
o Short-head seahorse or knobby seahorse, H. breviceps Peters, 1869 (south and east Australia)
o Giraffe seahorse, H. camelopardalis Bianconi, 1854
o Knysna seahorse, H. capensis Boulenger, 1900
o H. colemani Kuiter, 2003
o Tiger tail seahorse, H. comes Cantor, 1850
o Crowned seahorse, H. coronatus Temminck & Schlegel, 1850
o Denise's pygmy seahorse, H. denise Lourie & Randall, 2003
o Lined seahorse, H. erectus Perry, 1810 (east coast of the Americas, between Nova Scotia and Uruguay)
o Fisher's seahorse, H. fisheri Jordan & Evermann, 1903
o Sea pony, H. fuscus Rüppell, 1838 (Indian Ocean)
o Big-head seahorse, H. grandiceps Kuiter, 2001
o Long-snouted seahorse, H. guttulatus Cuvier, 1829
o Eastern spiny seahorse, H. hendriki Kuiter, 2001
o Short-snouted seahorse, H. hippocampus (Linnaeus, 1758) (Mediterranean Sea and Atlantic Ocean)
o Thorny seahorse, H. histrix Kaup, 1856 (Indian Ocean, Persian Gulf, Red Sea, and the Far East)
o Pacific seahorse, H. ingens Girard, 1858 (Pacific coast of North, Central and South America)
o Jayakar's seahorse, H. jayakari Boulenger, 1900
o Collared seahorse, H. jugumus Kuiter, 2001
o Great seahorse, H. kelloggi Jordan & Snyder, 1901
o Common seahorse, H. kuda Bleeker, 1852
o Lichtenstein's seahorse, H. lichtensteinii Kaup, 1856
o Bullneck seahorse, H. minotaur Gomon, 1997
o Japanese seahorse, H. mohnikei Bleeker, 1854
o Monte Bello seahorse, H. montebelloensis Kuiter, 2001
o Northern spiny seahorse, H. multispinus Kuiter, 2001
o H. pontohi Lourie and Kuiter, 2008
o High-crown seahorse, H. procerus Kuiter, 2001
o Queensland seahorse, H. queenslandicus Horne, 2001
o Longsnout seahorse, H. reidi Ginsburg, 1933 (Caribbean coral reefs)
o Satomi's pygmy seahorse, H. satomiae Lourie and Kuiter, 2008
o Half-spined seahorse, H. semispinosus Kuiter, 2001
o H. severnsi Lourie and Kuiter, 2008
o Shiho's seahorse, H. sindonis Jordan & Snyder, 1901
o Hedgehog seahorse, H. spinosissimus Weber, 1913
o West Australian seahorse, H. subelongatus Castelnau, 1873
o Longnose seahorse, H. trimaculatus Leach, 1814
o White's seahorse, H. whitei Bleeker, 1855 (east Australia)
o Zebra seahorse, H. zebra Whitley, 1964
o Dwarf seahorse, H. zosterae Jordan & Gilbert, 1882 (Gulf of Mexico and the Caribbean)

[edit] Pygmy seahorses

Pygmy Seahorses are less than 15 millimeters (0.6 in) tall and 17 millimeters (0.7 in) wide members of the genus. Previously the term was applied exclusively to the species H. bargibanti but since 1997, discoveries have made this term obsolete. The species H. minotaur, H. denise, H. colemani, H. pontohi, H. severnsi and H. satomiae have been described. Other species that are believed to be unclassified have also been reported in books, dive magazines and on the Internet. They can be distinguished from other species of seahorse by their 12 trunk rings, low number of tail rings (26–29), the location in which young are brooded in the trunk region of males and their extremely small size.[21] Molecular analysis (of ribosomal RNA) of 32 Hippocampus species found that H. bargibanti belongs in a separate clade from other members of the genus and therefore that the species diverged from the other species in the "ancient" past.[22]

Most pygmy seahorses are well camouflaged and live in close association with other organisms including colonial hydrozoans (Lytocarpus and Antennellopsis), coralline algae (Halimeda) sea fans (Muricella, Annella, Acanthogorgia). This combined with their small size accounts for why most species have only been noticed in recent years.[21]


Hippocampus satomiae attached to a coral
FONTE IMMAGINE: http://en.wikipedia.org/wiki/File:HSatomiaeJohnSear.jpg


Cultural references

* In heraldry, a seahorse is depicted as a creature with the foreparts of a horse and the hindparts of a fish. See, for example, the right supporter of the Isle of Wight Arms, the supporters on either side of the crest of the city of Newcastle upon Tyne, or the coincidental arms of the University of Newcastle, Australia.

[edit] References

1. ^ Hippocampus Rafinesque, 1810, WoRMS
2. ^ http://en.wiktionary.org/wiki/hippocampus Hippocampus at Wiktionary
3. ^ "Rare seahorses breeding in Thames". BBC News. 2008-04-07. http://news.bbc.co.uk/1/hi/england/london/7333980.stm. Retrieved 2009-11-11.
4. ^ Žalohar J., Hitij T., Križnar M. (2009). "Two new species of seahorses (Syngnathidae, Hippocampus) from the Middle Miocene (Sarmatian) Coprolitic Horizon in Tunjice Hills, Slovenia: The oldest fossil record of seahorses". Annales de Paléontologie 95 (2): 71–96. doi:10.1016/j.annpal.2009.03.002.
5. ^ Teske PR, Beheregaray LB (2009). "Evolution of seahorses' upright posture was linked to Oligocene expansion of seagrass habitats". Biol Lett. 5 (4): 521–3. doi:10.1098/rsbl.2009.0152. PMID 19451164.
6. ^ Teske PR, Cherry MI, Matthee CA (2004). "The evolutionary history of seahorses (Syngnathidae: Hippocampus): molecular data suggest a West Pacific origin and two invasions of the Atlantic Ocean". Mol Phylogenet Evol. 30 (2): 273–86. PMID 14715220.
7. ^ Foster S.J, Vincent C.J. (2004). "Life history and ecology of seahorses: implications for conservation and management". Journal of Fish Biology 65: 1–61. doi:10.1111/j.1095-8649.2004.00429.x. http://www.seaturtle.org/PDF/Foster_2004_JFishBiol.pdf.
8. ^ "The biology of seahorses: Reproduction". The Seahorse Project. http://seahorse.fisheries.ubc.ca/biology5.html. Retrieved 2007-05-08.
9. ^ a b c Milius, Susan (2000). "Pregnant—and Still Macho - seahorses | Science News | Find Articles at BNET.com". Findarticles.com. http://findarticles.com/p/articles/mi_m1200/is_11_157/ai_61291647/pg_1. Retrieved 2009-11-11.
10. ^ a b "Seahorse Fathers Take Reins in Childbirth". News.nationalgeographic.com. http://news.nationalgeographic.com/news/2002/06/0614_seahorse_recov.html. Retrieved 2009-11-11.
11. ^ Connor, Steve (2007-01-19). "Sex and the seahorse - Science, News - Independent.co.uk". London: News.independent.co.uk. http://news.independent.co.uk/world/science_technology/article2165477.ece. Retrieved 2009-11-11.
12. ^ Kvarnemo C, Moore G.I, Jones A.G, Nelson W.S, Avise J.C. (2000). "Monogamous pair bonds and mate switching in the Western Australian seahorse Hippocampus subelongatus". J. Evol. Biol. 13 (6): 882–8. doi:10.1046/j.1420-9101.2000.00228.x. http://www3.interscience.wiley.com/cgi-bin/fulltext/119188977/PDFSTART.
13. ^ Vincent C.J, Sadler L.M (1995). "Faithful pair bonds in wild seahorses, Hippocampus whitei'". Anim. Behav. 50: 1557-1569. http://courses.umass.edu/wfcon470/Vincent%20and%20Sadler%2095.pdf.
14. ^ "What’s Love Got to Do With It? The Truth About Seahorse Monogamy". fusedjaw.com. http://www.fusedjaw.com/biology/seahorse-monogamy/. Retrieved 2010-10-09.
15. ^ Alcock, John. Animal Behavior (8th ed.). Massachusetts: Sinauer. pp. 370–1.
16. ^ a b "Seahorse and Pipefish Foods | Tami Weiss". Fusedjaw.com. 2005-06-25. http://www.fusedjaw.com/food-and-nutrition/seahorse-foods-and-feeding/. Retrieved 2009-11-11.
17. ^ "Seahorse Tankmates | Will Wooten". Fusedjaw.com. 2004-06-25. http://www.fusedjaw.com/aquariumcare/seahorse-tankmates-whats-safe-whats-not/. Retrieved 2009-11-11.
18. ^ "Hippocampus spinosissimus". Fishbase. http://fishbase.org/Summary/speciesSummary.php?ID=25974&genusname=Hippocampus&speciesname=spinosissimus. Retrieved 2009-11-11.
19. ^ "Seahorse Crusader Amanda Vincent" on Nova television show
20. ^ New Scientist, January 1995 "Can we tame wild medicine"?
21. ^ a b Lourie, Sara; Rudie Kuiter (2008). "Three new pygmy seahorse species from Indonesia (Teleostei: Syngnathidae: Hippocampus)". Zootaxa (Magnolia Press) 1963: 54–68. ISSN 1175-5334. http://seahorse.fisheries.ubc.ca/pubs/2008/Lourie_and_Kuiter2008.pdf. Retrieved 9 June 2009.
22. ^ Teske, Peter; Michael Cherry and Conrad Matthee (February 2004). "The evolutionary history of seahorses (Syngnathidae: Hippocampus): molecular data suggest a West Pacific origin and two invasions of the Atlantic Ocean". Molecular Phylogenetics and Evolution 30 (2): 273–286. doi:10.1016/S1055-7903(03)00214-8. PMID 14715220.

[edit] Further reading

* Amanda C.J. Vincent and Laila M. Sadler (1995). "Faithful pair bonds in wild seahorse, Hippocampus whitei". Animal Behaviour 50: 1557–69. doi:10.1016/0003-3472(95)80011-5.
* Amanda C.J. Vincent (1995). "A role for daily greetings in maintaining seahorse pair bonds". Animal Behaviour 49: 258–260. doi:10.1016/0003-3472(95)80178-2.
* Amanda C.J. Vincent (1990). "A seahorse father makes a good mother". Natural History 12: 34–43.
* Amanda C.J. Vincent and Rosie Woodroffe (1994). "Mothers little helpers: patterns of male care in mammals". Trends in Ecology and Evolution 9: 294–7. doi:10.1016/0169-5347(94)90033-7.
* John Sparks (1999). Battle of the Sexes: The Natural History of Sex. London: BBC Books. ISBN 0563371455.
* Sara A. Lourie, Amanda C.J. Vincent and Heather J. Hall (1999). Seahorses: An Identification Guide to the World's Species and their Conversation. London: Project Seahorse.
* Teske P. R., Hamilton H., Matthee C. A. & Barker N. P. (2007). "Signatures of seaway closures and founder dispersal in the phylogeny of a circumglobally distributed seahorse lineage". BMC Evolutionary Biology 7: 138. doi:10.1186/1471-2148-7-138. http://www.biomedcentral.com/1471-2148/7/138.


Pacific seahorse
FONTE IMMAGINE: http://en.wikipedia.org/wiki/File:Hippocampus_ingens.jpg



Long-snouted seahorse
FONTE IMMAGINE: http://en.wikipedia.org/wiki/File:LongSnoutedSeahorse1600ppx.jpg


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Femminile Serpente
Numero di messaggi : 1826
Data d'iscrizione : 22.03.10
Età : 39
Località : Prov. CN

MessaggioOggetto: Re: Cavalluccio marino - Hippocampus   Mar 16 Nov 2010 - 14:56

Come avevo accennato il cavalluccio marino era considerato per cultura cinese una specie di drago e come tale veniva venerato per la sua potenza e la simbologia di fortuna.

Tra la sua simbologia vediamo che era considerato: cordiale, generoso, paziente e protettivo.

FONTE: http://www.whats-your-sign.com/symbolic-meaning-of-the-seahorse.html

The symbolic meaning of seahorse is quite intricate and diverse as this little creature itself is full of surprises.

The seahorse is quite a unique creature, and thought to have mystical significance among the Ancient Greeks, European (alchemists) and Asians.

The Ancient Greeks and Romans believed the seahorse was an attribute of the sea god Neptune/Poseidon and as such, the seahorse was considered a symbol of strength and power.

Further, the ancient Eurpeans believed that the seahorse carried the souls of deceased sailors to the underworld - giving them safe passage and protection until the met their soul’s destination.

Chinese cultures believed that the seahorse was a type of sea dragon, and as such they were revered for their power and thought to be symbols of good luck.

Sailors have long viewed the seahorse as a good luck charm too.

Symbolic meaning of Seahorses carry the following significances:

* Patience
* Friendliness
* Protection
* Inflexibility
* Perspective
* Generosity/Sharing
* High-Perception
* Persistence
* Contentment

A relatively calm, and mild-mannered creature, the seahorse is seemingly content to roam the seas. Their bodies are geared for ambling-type motion - not for speed. Thus, they are symbolic of patience and contentment - they are happy with being where they are, and are in no hurry for advancement.

Further testimony to these attributes is the lack of evolution of the seahorse’s body style. They have remained with this body style without change since their inception. Content to be who they are, and not feeling the need to change - these are a few profound lessons the seahorse provides us.

However, along with a resistence to change, and a carefree approach to progress, the seahorse can be a symbol of inflexibilty or stubborness. To wit, the seahorse wraps its tail around the nearest object in order to anchor itself in turbulent waters. This is a lesson to be persistent in our goals, but be mindful that we are not too inflexible or stubborn in our achieving them.



A unique aspect of the seahorse is that the male is impregnated by the female and carries the offspring to term. This is a message of sharing the load in the home, and gaining perspective of both sides (genders) of an argument or situation.

The seahorse has a boney exoskeleton which is a message of protection. Often when the seahorse comes to us it is a sign that we either need protection from our external circumstances, or we are building walls that aren’t needed. Their armor-bodies are a sign that sometimes we might need to let our guard down - or perhaps we are leaving too open to get hurt.

Lastly among the long list of symbolic meaning of the seahorse and its lessons is the idea of perception. The eyesight of the seahorse is incredibly sharp, and each eye moves independently. We take this as a symbolic message of perception and awareness of those around us and our situations. When we are lost or confused, the seahorse asks us to take a good look around - not just with our physical eyes but with our spiritual eyes in order to get a better persepective of the situations.


Secondo questo articolo chi ha questo totem avrà uno spiccato senso di cavalleria ed è più disponibile verso il partner.


FONTE: http://www.linsdomain.com/totems/pages/seahorse.htm

SEAHORSE

Chivalry, Protection

When someone receives a Seahorse totem,
their own sense of chivalry is awakened.
The protection of the young and those
weaker than themselves.

Seahorse people should pay
attention to a "two-week" time period
for their endeavors.

The Seahorse also brings forth a time of romance.
For women, time to choose her mate and for men, a time to seek
out the right woman and court her.

A person with a Seahorse totem should ask themselves these questions:
Is it time to reverse roles: to be the provider or the nurturer?
Do I need to be more responsive to my partner?
Am I providing enough protection for my loved ones?

Seahorses also facilitate contact with Water Spirits
who may take mortals into their favor and under their protection.
Seahorses can be the bridge between the Spirit Water World and the Living World.

Some of the information on this webpage was derived from the following sources:
Sans, Jamie & Carson, David. Medicine Cards: the Discovery of Power Through the Way of Animals. Santa Fe, NM. 1988. Print.
Andrews, Ted. Animal-speak: the Spiritual & Magical Powers of Creatures Great & Small. Woodbury, MN: Llewellyn Publications, 1993. Print.
Andrews, Ted. Animal-Wise: the Spirit Language and Signs of Nature. Woodbury, MN: Llewellyn Publications, 1999. Print.
D. J. Conway. Animal Magick: the Art of Recognizing & Working with Familiars. Woodbury, MN: Llewellyn Publications, 2003. Print.
Farmer, Steven D. Animal Spirit Guides. Hayhouse Inc., 2006. Print.



Ed ora grazie a wikipedia vedremo qualche curiosità sulla mitologia di questo totem...

Buona lettura


FONTE: http://it.wikipedia.org/wiki/Ippocampo_%28mitologia%29

Ippocampo (mitologia)
Da Wikipedia, l'enciclopedia libera.

Un Ippocampo è una creatura leggendaria della mitologia greca. Gli Ippocampi figurano nel corteo di Poseidone, insieme a tritoni, draghi acquatici, e giganteschi mostri marini.
Indice
[nascondi]

* 1 Descrizione
* 2 Voci correlate
* 3 Altri progetti
* 4 Collegamenti esterni

Descrizione [modifica]

Sono cavalli sino alla pancia, e il loro corpo si conclude con una coda di pesce. Possono avere zoccoli o zampe palmate, e al posto della criniera possono esserci una cresta di membrana o delle alghe.


FONTE: http://it.wikipedia.org/wiki/Alastyn

Alastyn
Da Wikipedia, l'enciclopedia libera.

L'Alastyn è una creatura del folklore e delle leggende gaeliche.

È un cavallo d'acqua dell'Isola di Man, che può trasformarsi in un uomo, eccetto le orecchie che restano immutate.

Inganna gli umani facendosi montare per portarli in acqua e lì divorarli. Per alcune sue caratteristiche è accostabile agli scozzesi Kelpie e Each Uisge.


FONTE: http://it.wikipedia.org/wiki/Kelpie

Kelpie
Da Wikipedia, l'enciclopedia libera.


Il kelpie è un demone in grado di assumere la forma di un cavallo nero e proviene dal folklore celtico, e si crede infesti i laghi ed i fiumi della Scozia e dell’Irlanda. È presente anche nel folklore scandinavo, dove è noto con il nome di Bäckahästen (il cavallo di fiume), e nell'Isola di Man, dove è noto con il nome di Alastyn.

Indice
[nascondi]

* 1 Storia e Mitologia
* 2 La spiegazione naturalistica
* 3 Bibliografia
* 4 Voci correlate

Storia e Mitologia [modifica]

In Scandinavia, il cavallo di fiume è una variante delle Nix, uno spirito d’acqua che assume forma umana. Esso viene spesso descritto come una magnifico cavallo bianco che appare in prossimità dei fiumi, soprattutto nelle giornate nebbiose; si riconosce subito dalla coda e dalla criniera bagnata. Chiunque vi monti in groppa non è più in grado di scendere. Il cavallo salta allora nel fiume gettando in acqua il suo passeggero. Questo demone a volte si presenta con tanto di finimenti e aratro al seguito, forse come ulteriore tentazione nei confronti degli esseri umani. Il kelpie appare a volte in forma di un uomo molto villoso in grado di afferrare i malcapitati viaggiatori e stritolarli, ma il più delle volte esso prende la forma di un mite cavallo bianco. In tale forma esso cerca di convincere i viandanti a montargli in groppa per poi disarcionarli o trascinarli in acqua. Fatto questo il kelpie scompare provocando enormi lampi toccando l'acqua con la sua coda. Esso a volte si accoppia con i normali cavalli ed i puledri così ottenuti sono dei cavalli straordinariamente veloci. Il kelpie è anche in grado di preannunciare l’avvento di una tempesta segnalandola con ululi e lamenti, per questo si dice che a volte può anche rivelarsi un essere benevolo. La tradizione popolare afferma che chiunque sia in grado di imbrigliare un kelpie cavalcherà magnificamente per tutta la vita. In Australia, non è altrettanto benevolo, poiché non si limita a essere burlone, infatti spesso divora il malcapitato dopo avrlo trascinato in acqua, e questo può succedere anche in mare.

La spiegazione naturalistica [modifica]

Secondo il naturalista Svedese Bengt Sjögren, le attuali leggende di avvistamenti di mostri lacustri e fluviali come quello del celebre Mostro di Loch Ness sono associabili alle antiche leggende dei kelpies. Sjögren afferma che le leggende su queste creature sono mutate nel corso del tempo, mentre gli antichi racconti parlavano di apparizioni di esseri simili a cavalli, essi sono ora diventati degli esseri più “realistici” e “moderni” e si sono adeguati alla scoperta dei dinosauri e dei grandi rettili acquatici. Per questo motivo gli animali leggendari di oggi sono molto spesso identificabili con animali preistorici come il Plesiosauro.

Bibliografia [modifica]

Nel libro Water Horse si parla di un Kelpie di nome "Crusoe" che diventerà il ben più famoso Nessie.
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