Narcomedusae is an order of hydrozoans in the subclass Trachylinae.[2] Members of this order do not normally have a polyp stage. The medusa has a dome-shaped bell with thin sides. The tentacles are attached above the lobed margin of the bell with usually a gastric pouch above each. There are no bulbs on the tentacles and no radial canals. Narcomedusans are mostly inhabitants of the open sea and deep waters. They can be found in the Mediterranean in large numbers.[3]
Narcomedusae use their tentacles to catch large, fast-moving prey. They do this by holding their tentacles perpendicular to the direction they are swimming to cover a larger area. If something is caught they bend the tentacle inwards and coil them at the tips to their mouths.[4][5]
Reproductive Featuresedit
Narcomedusae are hermaphroditic, meaning that they have both male and female reproductive organs. As a result they release their eggs and sperm into the water which is also where fertilization happens.[6] Once the eggs are fertilized they then develop into a stage called planula which can be defined as a larval stage and it then lives in the seafloor. These jellyfish are capable of reproducing all year round, although this depends on their reproductive cycle and patterns as they fluctuate depending on factors such as environmental conditions and food availability.
^Narcomedusae World Register of Marine Species. Retrieved 2011-11-07.
^Schuchert, Peter; Ville-ge.ch (2005). "Hydrozoan Phylogeny and Classification". Retrieved 24 February 2010.
^Order Narcomedusae – Haeckel, 1879 The Hydrozoa Directory. Retrieved 6 November 2011.
^Raskoff, .K. Foraging, prey capture, and gut contents of the mesopelagic narcomedusa Solmissus spp. (Cnidaria: Hydrozoa). Marine Biology 141, 1099–1107 (2002). https://rdcu.be/cJjXC. Retrieved 3 March 2022
^Larson, Ronald J.; Mills, Claudia E.; Harbison, G. Richard (1989). "In Situ Foraging and Feeding Behaviour of Narcomedusae (Cnidaria: Hydrozoa)". Journal of the Marine Biological Association of the United Kingdom. 69 (4): 785–794. doi:10.1017/s002531540003215x. ISSN 0025-3154.
^ abLucas, Cathy H.; Reed, Adam J. (February 2009). "Observations on the life histories of the narcomedusae Aeginura grimaldii, Cunina peregrina and Solmissus incisa from the western North Atlantic". Marine Biology. 156 (3): 373–379. doi:10.1007/s00227-008-1089-6. ISSN 0025-3162.
narcomedusae, order, hydrozoans, subclass, trachylinae, members, this, order, normally, have, polyp, stage, medusa, dome, shaped, bell, with, thin, sides, tentacles, attached, above, lobed, margin, bell, with, usually, gastric, pouch, above, each, there, bulbs. Narcomedusae is an order of hydrozoans in the subclass Trachylinae 2 Members of this order do not normally have a polyp stage The medusa has a dome shaped bell with thin sides The tentacles are attached above the lobed margin of the bell with usually a gastric pouch above each There are no bulbs on the tentacles and no radial canals Narcomedusans are mostly inhabitants of the open sea and deep waters They can be found in the Mediterranean in large numbers 3 Narcomedusae Bathykorus bouilloni Aeginidae Scientific classification Domain Eukaryota Kingdom Animalia Phylum Cnidaria Class Hydrozoa Subclass Trachylinae Order NarcomedusaeHaeckel 1879 1 Families Aeginidae Csiromedusidae Cuninidae Pseudaeginidae Solmarisidae Solmundaeginidae Tetraplatidae Contents 1 Feeding Behavior 2 Reproductive Features 3 References 6 4 GalleryFeeding Behavior editNarcomedusae use their tentacles to catch large fast moving prey They do this by holding their tentacles perpendicular to the direction they are swimming to cover a larger area If something is caught they bend the tentacle inwards and coil them at the tips to their mouths 4 5 Reproductive Features editNarcomedusae are hermaphroditic meaning that they have both male and female reproductive organs As a result they release their eggs and sperm into the water which is also where fertilization happens 6 Once the eggs are fertilized they then develop into a stage called planula which can be defined as a larval stage and it then lives in the seafloor These jellyfish are capable of reproducing all year round although this depends on their reproductive cycle and patterns as they fluctuate depending on factors such as environmental conditions and food availability References 6 edit Narcomedusae World Register of Marine Species Retrieved 2011 11 07 Schuchert Peter Ville ge ch 2005 Hydrozoan Phylogeny and Classification Retrieved 24 February 2010 Order Narcomedusae Haeckel 1879 The Hydrozoa Directory Retrieved 6 November 2011 Raskoff K Foraging prey capture and gut contents of the mesopelagic narcomedusa Solmissus spp Cnidaria Hydrozoa Marine Biology 141 1099 1107 2002 https rdcu be cJjXC Retrieved 3 March 2022 Larson Ronald J Mills Claudia E Harbison G Richard 1989 In Situ Foraging and Feeding Behaviour of Narcomedusae Cnidaria Hydrozoa Journal of the Marine Biological Association of the United Kingdom 69 4 785 794 doi 10 1017 s002531540003215x ISSN 0025 3154 a b Lucas Cathy H Reed Adam J February 2009 Observations on the life histories of the narcomedusae Aeginura grimaldii Cunina peregrina and Solmissus incisa from the western North Atlantic Marine Biology 156 3 373 379 doi 10 1007 s00227 008 1089 6 ISSN 0025 3162 Gallery edit nbsp Aeginura grimaldii by Ernst Haeckel nbsp This Hydrozoa related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Narcomedusae amp oldid 1158214335, wikipedia, wiki, book, books, library,
