Petrolisthes violaceus
| Petrolisthes violaceus | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Anomura |
| Family: | Porcellanidae |
| Genus: | Petrolisthes |
| Species: | P. violaceus
|
| Binomial name | |
| Petrolisthes violaceus (Guérin, 1829)
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| Synonyms | |
| |
Petrolisthes violaceus is a species of porcelain crab endemic to the south-eastern Pacific.[1]
Description[edit]
Petrolisthes violaceus has planktonic larvae that remain as plankton for more than 25 days.[2] The development of the larvae occurs in four stages: a prezoea, two zoeal stages, and a megalopa stage.[3]
Range[edit]
Petrolisthes violaceus' range is from Callao, Peru to the Taitao Peninsula in Chile.[3]
Habitat[edit]
It is one of the most common decapods in the intertidal zone of its range.[3] It is a free-living crab, commonly found in crevice, under boulders, or between rocks.[4] Compared to another Petrolisthes species, Petrolisthes laevigatus, it occupies the lower intertidal zone.[5] Compared to P. laevigatus, P. violaceus is more active and more aggressive.[6]
Ecology[edit]
Because of the vertical distribution and its intertidal habitat, P. violaceus is regularly exposed to different periods of air exposure, which varies by the heights of the tides.[5] Gaitán-Espitia et al. demonstrated that P. violaceus exhibits a gradient of physiological responses in metabolic and heart rates across a latitude gradient of 3000 kilometers. P. violaceus is better able to cope with water hypoxia due to its position in the lower intertidal zone; it is proposed that in aquatic conditions, P. violaceus has an oxyconformer strategy and is able to adapt its oxygen demands in an oxygen-fluctuating environment.[6]
Taxonomy[edit]
Petrolisthes violaceus is the type species of the genus Petrolisthes.[7]
References[edit]
- ^ "Petrolisthes violaceus". iNaturalist. Retrieved 6 September 2023.
- ^ Thiel, Martin; Poore, Gary (2020). Evolution and Biogeography: Volume 8. Oxford University Press. p. 452. ISBN 978-0-19-063784-2.
- ^ a b c Wehrtmann, Ingo S.; Albornoz, Luis; Pardo, L. Miguel; Véliz, David (1997). "The Larval Development of Petrolisthes violaceus (Guérin, 1831) (Decapoda, Anomura, Porcellanidae) from Chilean Waters, Cultivated under Laboratory Conditions". Crustaceana. 70 (5): 562–583. doi:10.1163/156854097X00681. ISSN 0011-216X. JSTOR 20105890.
- ^ Förster, Carla; Baeza, Juan (2001-01-01). "Active Brood Care in the Anomuran Crab Petrolisthes Violaceus (Decapoda: Anomura: Porcellanidae): Grooming of Brooded Embryos by the Fifth Pereiopods". Journal of Crustacean Biology. 21 (3): 606–615. doi:10.1163/20021975-99990162. ISSN 0278-0372.
- ^ a b Viviani, Carlos A. (1969). "Los Porcellanidae (Crustacea Anomura) chilenos: Distribución geográfica, y algunas observaciones biocenóticas sobre los porcelánidos en la bahía de Mehuín". Beiträge zur Neotropischen Fauna. 6 (1): 40–56. doi:10.1080/01650526909360413. ISSN 0005-8130.
- ^ a b Lagos, Marcelo E.; Muñoz, José L.; Contreras, Daniela A.; Cáceres, Cristian W. (2010-11-08). "Microhabitat segregation and physiological differences in two species of intertidal porcellanid crabs (Genus Petrolisthes) on the southern coast of Chile". Scientia Marina. 75 (2): 273–278. doi:10.3989/scimar.2011.75n2273. ISSN 1886-8134.
- ^ Hiller, Alexandra; Kraus, Holger; Almon, Marc; Werding, Bernd (2006-08-01). "The Petrolisthes galathinus complex: Species boundaries based on color pattern, morphology and molecules, and evolutionary interrelationships between this complex and other Porcellanidae (Crustacea: Decapoda: Anomura)". Molecular Phylogenetics and Evolution. 40 (2): 547–569. doi:10.1016/j.ympev.2006.03.030. ISSN 1055-7903. PMID 16684610.