An ozopore is the opening of a defensive gland present in some arthropods, notably in millipedes of the order Polydesmida[1] and in harvestmen, the eight-legged arachnids also known as "daddy long-legs". The glands themselves are known as ozadenes, also called "scent glands", "repugnatorial glands", "odoriferous glands" or "stink glands" by various authors. The name is derived from Ancient Greekozo "smell" and Latinporus "pore, small opening".
Above: Ozopore (circled) of the millipede Martensodesmus cattienensis. Below: ozopore magnified.
Ozopore on an elevated ozophore above the eye of Pettalus (Cyphophthalmi)
In harvestmen, ozopores are located at the anterior sides of the prosoma.
The defensive secretions emitted also act as an alarm pheromone. The glands are infoldings of the body wall, consisting of three layers. Although the glands themselves have no musculature, there is associated musculature present, which is most elaborate in the harvestman suborder Cyphophthalmi. Eupnoi and Dyspnoi have the most reduced muscular system.[2]
This defensive behavior is considered most effective in the suborders Cyphophthalmi and Laniatores.[2]
In the suborder Cyphophthalmi, the ozopores are located on special ozophores, specialized elevated cones.
In millipedes, ozopores are repeated serially on body segments, and usually situated laterally. Exceptions are members of the order Glomerida, which have ozopores located dorsally.[3] Some members of the order Julida have especially prominent ozadenes.
^Ozopore. 2016-03-04 at the Wayback Machine External Anatomy of Polydesmida. polydesmida.info
^ abcGnaspini, Pedro & Hara, Marcos R. (2007): Defensive Mechanisms. In: Pinto-da-Rocha et al. 2007: 382ffPinto-da-Rocha et al. 2007: 382ff
^"Putative apomorphies of millipede clades" (PDF). Milli-PEET: Millipede Systematics. The Field Museum, Chicago, IL. 26 September 2006.
Referencesedit
Pinto-da-Rocha, R., Machado, G. & Giribet, G. (eds.) (2007): Harvestmen - The Biology of Opiliones. Harvard University PressISBN0-674-02343-9
November 28, 2023
ozopore, ozopore, opening, defensive, gland, present, some, arthropods, notably, millipedes, order, polydesmida, harvestmen, eight, legged, arachnids, also, known, daddy, long, legs, glands, themselves, known, ozadenes, also, called, scent, glands, repugnatori. An ozopore is the opening of a defensive gland present in some arthropods notably in millipedes of the order Polydesmida 1 and in harvestmen the eight legged arachnids also known as daddy long legs The glands themselves are known as ozadenes also called scent glands repugnatorial glands odoriferous glands or stink glands by various authors The name is derived from Ancient Greek ozo smell and Latin porus pore small opening Above Ozopore circled of the millipede Martensodesmus cattienensis Below ozopore magnified Contents 1 Harvestmen 2 Millipedes 3 Footnotes 4 ReferencesHarvestmen edit nbsp Ozopore on an elevated ozophore above the eye of Pettalus Cyphophthalmi In harvestmen ozopores are located at the anterior sides of the prosoma The defensive secretions emitted also act as an alarm pheromone The glands are infoldings of the body wall consisting of three layers Although the glands themselves have no musculature there is associated musculature present which is most elaborate in the harvestman suborder Cyphophthalmi Eupnoi and Dyspnoi have the most reduced muscular system 2 This defensive behavior is considered most effective in the suborders Cyphophthalmi and Laniatores 2 In the suborder Cyphophthalmi the ozopores are located on special ozophores specialized elevated cones Many different compounds have been found in various studied harvestman secretions The chemical composition of the secretions seems to be useful in taxonomic recognition In the Laniatores Gonyleptoidea produce alkylated benzoquinones and phenols and Travunioidea produce mainly terpenoids In the Eupnoi the Sclerosomatidae secrete short chain acyclic ketones and alcohols and the Phalangiidae naphthoquinones 2 Millipedes editIn millipedes ozopores are repeated serially on body segments and usually situated laterally Exceptions are members of the order Glomerida which have ozopores located dorsally 3 Some members of the order Julida have especially prominent ozadenes nbsp A julidan millipede with prominent ozadenes nbsp Ozadenes G on the inside of a millipede segmentFootnotes edit Ozopore Archived 2016 03 04 at the Wayback Machine External Anatomy of Polydesmida polydesmida info a b c Gnaspini Pedro amp Hara Marcos R 2007 Defensive Mechanisms In Pinto da Rocha et al 2007 382ffPinto da Rocha et al 2007 382ff Putative apomorphies of millipede clades PDF Milli PEET Millipede Systematics The Field Museum Chicago IL 26 September 2006 References editPinto da Rocha R Machado G amp Giribet G eds 2007 Harvestmen The Biology of Opiliones Harvard University Press ISBN 0 674 02343 9 Retrieved from https en wikipedia org w index php title Ozopore amp oldid 1064136944, wikipedia, wiki, book, books, library,
