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Brief Summary ( 英語 )

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The scud is a gammarid-like anima, found particularly among red seaweed. Males are easy to distinguish by their conspicuously enlarged second claw. In addition, they have a multi-colored body, so the look different than most amphipods. This coloring helps to camouflage the animal among the seaweeds. Scuds build their own house, a tube. Males and females live in separate tubes.
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Brief Summary ( 荷蘭、佛萊明語 )

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Het kreeftje jassa is een vlokreeft-achtig beestje, dat vooral tussen roodwieren te vinden is. Het mannetje heeft een opvallend grote tweede schaarpoot, waaraan het dier meteen te herkennen is. Daarnaast ziet de jassa er anders uit dan de meeste kleine amfipoden. Vaak is het lichaam bont gekleurd om niet op te vallen tussen de wieren. De jassa bouwt zijn eigen huisje, een kokertje. Mannetjes en vrouwtjes leven in aparte kokers.
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Jassa falcata ( 英語 )

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Jassa falcata, commonly known as scud, is a tube-dwelling amphipod.

Ecology

Jassa falcata constructs tubes of debris. It is a fouling organism, growing on the bottoms of ships and slowing them down. J. falcata forms dense mats or nests. The male and the female live in different tubes. J. falcata feeds generally on hydroid growth on the bottom of rafts and ships. It is generally a suspension feeder normally found on sediment areas.[2]

Description

Amphipods have two pairs of antennae. In J. falcata the first antennae have two-segmented flagella and are shorter and more slender than the second antennae. Males are 7–13 mm long and females are 6–12 mm. Colours vary but are usually yellow-grey with brown, red or black patches depending on the colour of the habitat.[2]

Distribution

Jassa falcata is found on all British coasts. It has also been reported in several sites around the coast of Ireland.[2]

References

  1. ^ Mark Costello & Denise Bellan-Santini (2012). Lowry J (ed.). "Jassa falcata (Montagu, 1808)". World Amphipoda database. World Register of Marine Species. Retrieved April 14, 2012.
  2. ^ a b c Jacqueline Hill (2000). "Jassa falcata. An amphipod". Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme. Plymouth: Marine Biological Association of the United Kingdom. Retrieved January 29, 2012.
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Jassa falcata: Brief Summary ( 英語 )

由wikipedia EN提供

Jassa falcata, commonly known as scud, is a tube-dwelling amphipod.

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Jassa falcata ( 荷蘭、佛萊明語 )

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Jassa falcata is een vlokreeftensoort uit de familie van de Ischyroceridae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1808 door Montagu.

Bronnen, noten en/of referenties
  1. Costello, M.; Bellan-Santini, D. (2012). Jassa falcata (Montagu, 1808). In: Lowry, J. (2012) World Amphipoda database. Geraadpleegd via: World Register of Marine Species op http://www.marinespecies.org/aphia.php?p=taxdetails&id=102431
Geplaatst op:
21-03-2013
Dit artikel is een beginnetje over biologie. U wordt uitgenodigd om op bewerken te klikken om uw kennis aan dit artikel toe te voegen. Beginnetje
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Distribution ( 英語 )

由World Register of Marine Species提供
Cosmopolitan (Griffiths, 1974).

參考資料

Griffiths, C. L. (1974). The Amphipoda of Southern Africa. 4. The Gammaridea and Caprellidea of the Cape Province East of Cape Agulhas. Annals of the South African Museum. 65: 251-336.

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Identification ( 英語 )

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A lot of Dutch material was in the past wrongly determined as Jassa falcata. Of this species only one is recorded in the Delta area. According to Conlan (1990) J. herdmanni and J. marmorata are more common on the hard substrate of the Delta area.

參考資料

Faasse, M.; Van Moorsel, G. (2000). Nieuwe en minder bekende vlokreeftjes van sublitorale harde bodems in het Deltagebied (Crustacea: Amphipoda: Gammaridea) [New and lesser-known amphipods of hard substrates in the Delta area of the Netherlands (Crustacea: Amphipoda: Gammaridea)]. Ned. Faunist. Meded. 11: 19-44

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