AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Pseudodiaptomus marinus [WoRMS] | |
Authority | Sato, 1913 | |
Family | Pseudodiaptomidae | |
Order | Calanoida | |
Class | Copepoda | |
Phylum | Arthropoda | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Ocean: Pacific --> Ocean region: NW Pacific |
Life form / Life stage (?) |
Comments: Planktonic calanoid copepods mate in the water column. |
Sociability / Life stage (?) |
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Reproductive frequency (?) | Iteroparous References (not structured): Uye, S. I., Iwai, Y., Kasahara, S. 1982. Reproductive biology of Pseudodiaptomus marinus (Copepoda: Calanoida) in the inland sea of Japan. Bull. Plankton Soc. Japan, 29(1), pp. 25-35. |
Reproductive type (?) | Sexual References: Liang, D., Uye, S. 1997. Seasonal reproductive biology of the egg-carrying calanoid copepod Pseudodiaptomus marinus in a eutrophic inlet of the Inland Sea of Japan. Marine Biology, 128, pp. 409-414. |
Developmental trait (?) | Direct development References: Uye, S. I., Iwai, Y., Kasahara, S. 1982. Reproductive biology of Pseudodiaptomus marinus (Copepoda: Calanoida) in the inland sea of Japan. Bull. Plankton Soc. Japan, 29(1), pp. 25-35. Comments: The females carry the eggs in a brood pouch under the abdomen. Because the eggs are carried, this increases their chance of survival. At lower temperatures, the rate of egg production appears to be much lower. The development time (from egg to adult) is on average 13 days, which is short enough to ensure high numbers under the right conditions. |
Characteristic feeding method / Life stage (?) |
Comments: P. marinus feeds on both plant material and detritus. P. marinus is reported as being both a herbivore and detritivore feeding at the bottom of waters during the day and moving along the water column at night. |
Mobility / Life stage (?) |
Comments: During the day, this copepod lives near the bottom (epibenthic way of life). At sunset, it moves higher up the water column, where it is part of the so-called animal plankton or zooplankton. |
Salinity tolerance range (?) | Exact range: 2.5 - 38 References: Svetlichny, L., Hubareva, E., Khanaychenko, A., Uttieri, M. 2019. Response to salinity and temperature changes in the alien Asian copepod Pseudodiaptomus marinus introduced in the Black Sea. Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, 331(8), pp. 416-426. Comments: This non-native species is worldwide considered a potential pest, due to its resistance to adverse conditions and its tolerance to changes in salinity (2.5 to 38 PSU). |
Habitat modifying ability potential (?) | Keystone species References: Arias, A. H., Souissi, A., Roussin, M., Ouddane, B., Souissi, S. 2016. Bioaccumulation of PAHs in marine zooplankton: an experimental study in the copepod Pseudodiaptomus marinus. Environmental Earth Sciences, 75, pp. 1-9. Comments: Pseudodiaptomus marinus — a keystone species of vast Atlantic and Pacific marine ecosystems. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Anthropogenic chemical compounds References: Tlili, S., Ovaert, J., Souissi, A., Ouddane, B., Souissi, S. 2016. Acute toxicity, uptake and accumulation kinetics of nickel in an invasive copepod species: Pseudodiaptomus marinus. Chemosphere, 144, pp. 1729-1737. Tlili, S., Ovaert, J., Souissi, A., Ouddane, B., Lee, J. S., Souissi, S. 2019. Bioaccumulation of mercury in the copepod Pseudodiaptomus marinus: a comparative study between waterborne and dietary pathways. International Journal of Environmental Research, 13, pp. 759-768. |
Known human health impact? | Known Comments: Harmless. |
Known economic impact? | Not known Comments: Not available. |
Known measurable environmental impact? | Known Comments: There are few effects associated with the introduction or establishment of P. marinus. A negative impact was observed in the southern bays of California. Here, the population of a native species, namely Pseudodiaptomus euryhalinus, has declined, presumably due to the introduction of P. marinus. |
Included in the Target Species list? | No References: HELCOM, 2009. Alien Species and Ballast Water [PDF] Available at: https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf [Accessed 1 July 2024]. |
Association with vessel vectors (?) | Ballast waters References: Brylinski, J. M., Antajan, E., Raud, T.,Vincent, D. 2012. First record of the Asian copepod Pseudodiaptomus marinus Sato, 1913 (Copepoda: Calanoida: Pseudodiaptomidae) in the southern bight of the North Sea along the coast of France. Aquatic Invasions, 7(4), pp. 577-584. Comments: The species was likely introduced together with other species imported for aquaculture, or through the discharge of ballast water. |
Created by | Aleksas Narščius, 2014-04-16 |
Last update by | Sandra Gečaitė, 2024-08-19 |