Biology
provided by Arkive
Little is known about the specific biology of Jayakar's seahorse, but seahorses in general exhibit a number of shared traits. The most extraordinary of these is the most extreme form of male parental care yet to be discovered (6) (7). To reproduce, the female seahorse deposits eggs into a brood pouch at the base of the male's tail. The male then fertilises the eggs and carries them for the duration of their development. The brood pouch acts in much the same way as a female mammal's womb, providing nutrients and oxygen to the developing embryos, whilst expelling unwanted waste products (7). At the end of gestation, which can last from four to six weeks, the male goes into several hours of labour, during which time it pumps the young seahorses from its brood pouch (6) (7). The newborns are completely independent and receive no further parental care (7).
Despite their gentle appearance, seahorses tend to be voracious predators, ingesting just about anything moving that is small enough to fit into their mouths. This usually includes small crustaceans, fish fry and other invertebrates (7).
Conservation
provided by Arkive
Given the lack of information on the status and vulnerability of the Jayakar's seahorse, further research on the biology, ecology, abundance and distribution of this species is vital to inform conservation measures.
Description
provided by Arkive
With their horse-like head, upright posture, locomotive dorsal fin, and prehensile tail, the seahorses (Hippocampus sp.) are some of the most peculiar fish in the sea (4) (5). Like all Hippocampus species, the skin of Jayakar's seahorse is stretched over bony plates, visible as distinct rings on its trunk and tail (2) (5). The colour of its body ranges from pale cream to beige, but is often patterned with conspicuous white spots. In addition, long and sharp, dark-tipped spines protrude over much of its body (2).
Habitat
provided by Arkive
Although Jayakar's seahorse has been reported at depths of up to 20 metres, it is commonly caught at a depth of two to three metres, amongst seagrass beds, soft-bottom sponges and algae covered rubble (1) (2) (5).
Range
provided by Arkive
Jayakar's seahorse has been confirmed in the coastal waters of Israel, Oman and Pakistan, but its distribution is suspected to also include Bahrain, Djibouti, Egypt, Eritrea, Iran, Kuwait, Qatar, Saudi Arabia, Somalia, Sudan, United Arab Emirates and Yemen (1) (2).
Status
provided by Arkive
Classified as Data Deficient (DD) on the IUCN Red List (1) and listed on Appendix II of CITES (3).
Threats
provided by Arkive
Although Jayakar's seahorse may be susceptible to population declines as a consequence of habitat degradation and being caught as bycatch, almost nothing is known about the status of its population. Consequently, this seahorse is currently classified as Data Deficient on the IUCN Red List (1). Fortunately, it has never been reported in international trade (1) (2).
Trophic Strategy
provided by Fishbase
Also found in rocks and gravel and among sponges (Ref. 52034).
Morphology
provided by Fishbase
Dorsal spines (total): 0; Dorsal soft rays (total): 1819
Life Cycle
provided by Fishbase
Male carries the eggs in a brood pouch (Ref. 205).
Diagnostic Description
provided by Fishbase
Description: (based on 8 specimens): Adult height: 11.0-13.0cm. Rings: 11+38-39. Snout length: 2.1 (1.9-2.4) in head length. Dorsal fin rays: 18-19 covering 2+1 rings. Pectoral fin rays: 17-18. Coronet: low-medium with four very long sharp spines. Spines: very long and sharp; no spines on alternate tail rings. Other distinctive characters: double cheek spine (usually); double spine below eye; very long, sharp spine in front of coronet and above eye. Color pattern: pale cream or beige colored; often with a pattern of large white spots on body and face; spines with a broad dark band near tip; dark mid-ventral line.
Biology
provided by Fishbase
Found in seagrass beds, e.g. Halophila spp. Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205).
Hippocampus jayakari
(
Catalan; Valencian
)
provided by wikipedia CA
Hippocampus jayakari és una espècie de peix de la família dels singnàtids i de l'ordre dels singnatiformes.
Morfologia
Els mascles poden assolir els 14 cm de longitud total.[2]
Distribució geogràfica
Es troba al Mar d'Aràbia i al Mar Roig.[2]
Referències
-
↑ Rafinesque C. S. 1810. Caratteri di alcuni nuovi generi e nuove specie di animali e piante della sicilia, con varie osservazioni sopra i medisimi. (Part 1 involves fishes, pp. [i-iv] 3-69 [70 blank], Part 2 with slightly different title, pp. ia-iva + 71-105 [106 blank]). Caratteri.
-
↑ 2,0 2,1 2,2 FishBase (anglès)
Bibliografia
- Helfman, G., B. Collette i D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts (Estats Units), 1997.
- Moyle, P. i J. Cech.: Fishes: An Introduction to Ichthyology, 4a edició, Upper Saddle River, Nova Jersey, Estats Units: Prentice-Hall (2000).
- Nelson, J.: Fishes of the World, 3a edició. Nova York, Estats Units: John Wiley and Sons. Any 1994.
- Lourie, S. A., Amanda C.J. Vincent i Heather J. Hall: Seahorses: An Identification Guide to the World's Species and their Conservation. Dorling Print Limited, Dorling House: Londres, Gran Bretanya: Project Seahorse, 1999.
- Wheeler, A.: The World Encyclopedia of Fishes, 2a edició, Londres: Macdonald. Any 1985.
Enllaços externs
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Hippocampus jayakari 
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Hippocampus jayakari: Brief Summary
(
Catalan; Valencian
)
provided by wikipedia CA
Hippocampus jayakari és una espècie de peix de la família dels singnàtids i de l'ordre dels singnatiformes.
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Hippocampus jayakari
(
Corsican
)
provided by wikipedia emerging languages
Hippocampus jayakari hè una spezia d'animali di a fauna marina chì faci partita di u genaru di l'Hippocampus.
Descrizzioni
Lucalisazioni
Prutizzioni
Com'è tutti i spezii di u genaru di l'hippocampus, Hippocampus jayakari hè prutettu da:
- a cunvinzioni internaziunali di Washington chì intardisci u cummerciu di i spezii di fauna è di flora minacciati di sparizioni.
Rifarenzi
Liami
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Hippocampus jayakari: Brief Summary
(
Corsican
)
provided by wikipedia emerging languages
Hippocampus jayakari hè una spezia d'animali di a fauna marina chì faci partita di u genaru di l'Hippocampus.
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Jayakar's seahorse
provided by wikipedia EN
Jayakar's seahorse (Hippocampus jayakari) is a species of coastal fish of the family Syngnathidae. It is found in the Western Indian Ocean, from the Red and Arabian seas to the central coast of Pakistan.[1] It lives in seagrass beds (such as Halophila spp.), algae, soft-bottom substrates, sponges, and rocky habitats, where it can grow to lengths of 14 centimetres (5.5 in).[3] It can inhabit depths to 20 metres (66 ft), though it is more commonly found at 2–3 metres (6.6–9.8 ft).[3] It is expected to feed on small crustaceans, similar to other seahorses. This species is ovoviviparous, with males carrying eggs in a brood pouch before giving birth to live young.[1] Individuals reach sexual maturity at 11 centimetres (4.3 in).[3] The specific name and the common name honours the Indian physician, linguist and ichthyologist Dr. Surgeon-Major Atmaram Sadashiv "Muscati" Jayakar (1844-1911).[4]
References
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Jayakar's seahorse: Brief Summary
provided by wikipedia EN
Jayakar's seahorse (Hippocampus jayakari) is a species of coastal fish of the family Syngnathidae. It is found in the Western Indian Ocean, from the Red and Arabian seas to the central coast of Pakistan. It lives in seagrass beds (such as Halophila spp.), algae, soft-bottom substrates, sponges, and rocky habitats, where it can grow to lengths of 14 centimetres (5.5 in). It can inhabit depths to 20 metres (66 ft), though it is more commonly found at 2–3 metres (6.6–9.8 ft). It is expected to feed on small crustaceans, similar to other seahorses. This species is ovoviviparous, with males carrying eggs in a brood pouch before giving birth to live young. Individuals reach sexual maturity at 11 centimetres (4.3 in). The specific name and the common name honours the Indian physician, linguist and ichthyologist Dr. Surgeon-Major Atmaram Sadashiv "Muscati" Jayakar (1844-1911).
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Hippocampus jayakari
(
Spanish; Castilian
)
provided by wikipedia ES
Hippocampus jayakari es una especie de pez de la familia Syngnathidae en el orden de los Syngnathiformes.
Morfología
Los machos pueden llegar alcanzar los 14 cm de longitud total.[2]
Distribución geográfica
Se encuentra en el mar de Arabia y en el mar Rojo.
Referencias
Bibliografía
- Fenner, Robert M.: The Conscientious Marine Aquarist. Neptune City, Nueva Jersey, Estados Unidos: T.F.H. Publications, 2001.
- Helfman, G., B. Collette y D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts, Estados Unidos, 1997.
- Hoese, D.F. 1986. A M.M. Smith y P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlín, Alemania.
- Maugé, L.A. 1986. A J. Daget, J.-P. Gosse y D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB Bruselas; MRAC, Tervuren, Flandes; y ORSTOM, París, Francia. Vol. 2.
- Moyle, P. y J. Cech.: Fishes: An Introduction to Ichthyology, 4a. edición, Upper Saddle River, Nueva Jersey, Estados Unidos: Prentice-Hall. Año 2000.
- Nelson, J.: Fishes of the World, 3a. edición. Nueva York, Estados Unidos: John Wiley and Sons. Año 1994.
- Wheeler, A.: The World Encyclopedia of Fishes, 2a. edición, Londres: Macdonald. Año 1985.
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Hippocampus jayakari: Brief Summary
(
Spanish; Castilian
)
provided by wikipedia ES
Hippocampus jayakari es una especie de pez de la familia Syngnathidae en el orden de los Syngnathiformes.
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Hippocampus jayakari
(
Basque
)
provided by wikipedia EU
(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Hippocampus jayakari: Brief Summary
(
Basque
)
provided by wikipedia EU
Hippocampus jayakari Hippocampus generoko animalia da. Arrainen barruko Syngnathidae familian sailkatzen da.
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Hippocampus jayakari
(
Italian
)
provided by wikipedia IT
Hippocampus jayakari è un pesce d'acqua salata appartenente alla famiglia Syngnathidae.
Distribuzione e habitat
Questo pesce è diffuso nel Mar Rosso e nel Mar Arabico. Abita preferibilmente fondali ricchi di vegetazione, specialmente quelli colonizzati da alghe del genere Halophila.
Riproduzione
È una specie ovovivipara. La femmina, dopo la fecondazione, depone le uova (piccole, dal colore giallo-ambrato) nella tasca posta sul ventre del maschio. Egli coverà le uova fino alla loro schiusa, quando piccoli già formati usciranno dal ventre paterno.
Note
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Hippocampus jayakari: Brief Summary
(
Italian
)
provided by wikipedia IT
Hippocampus jayakari è un pesce d'acqua salata appartenente alla famiglia Syngnathidae.
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- cc-by-sa-3.0
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- Autori e redattori di Wikipedia
Hippocampus jayakari
(
Dutch; Flemish
)
provided by wikipedia NL
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Hippocampus jayakari
(
Portuguese
)
provided by wikipedia PT
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Hippocampus jayakari: Brief Summary
(
Portuguese
)
provided by wikipedia PT
Hippocampus jayakari é uma espécie de peixe da família Syngnathidae.
Pode ser encontrada nos seguintes países: Israel, Omã e Paquistão.
Os seus habitats naturais são: pradarias aquáticas subtidais.
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Hippocampus jayakari
(
Vietnamese
)
provided by wikipedia VI
Cá ngựa Jayakar (Hippocampus jayakari) là một loài cá thuộc họ Syngnathidae. Nó được tìm thấy ở ở các đại dương xung quanh Israel, Oman, và Pakistan. Môi trường sống tự nhiên của chúng là các đáy nước bán thủy triều.
Hình ảnh
Nguồn
Chú thích
Tham khảo
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Hippocampus jayakari: Brief Summary
(
Vietnamese
)
provided by wikipedia VI
Cá ngựa Jayakar (Hippocampus jayakari) là một loài cá thuộc họ Syngnathidae. Nó được tìm thấy ở ở các đại dương xung quanh Israel, Oman, và Pakistan. Môi trường sống tự nhiên của chúng là các đáy nước bán thủy triều.
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賈氏海馬
(
Chinese
)
provided by wikipedia 中文维基百科
賈氏海馬: Brief Summary
(
Chinese
)
provided by wikipedia 中文维基百科
賈氏海馬為輻鰭魚綱棘背魚目海龍科的其中一種，分布於西印度洋區的紅海及阿拉伯海海域，棲息深度可達20公尺，體長可達14公分，屬肉食性，以小型甲殼類為食，卵胎生。
Datos: Q2343674
Multimedia:
Especies: Hippocampus jayakari
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