AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species |
Hemigrapsus takanoi [WoRMS] References: Yamasaki, I., Doi, W., Mingkid, W. M., Yokota, M., Strüssmann, C. A., & Watanabe, S. (2011). Molecular-based method to distinguish the sibling species Hemigrapsus penicillatus and Hemigrapsus takanoi (Decapoda: Brachyura: Varunidae). Journal of Crustacean Biology, 31(4), 577-581. Comments: Sometimes identified as Hemigrapsus penicillatus (de Haan, 1835) |
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Authority | Asakura & Watanabe, 2005 | |
Family | Varunidae | |
Order | Decapoda | |
Class | Malacostraca | |
Phylum | Arthropoda | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: NW Pacific |
Life form / Life stage (?) |
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Sociability / Life stage (?) |
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Reproductive frequency (?) | Iteroparous References (not structured): van den Brink, A., Godschalk, M., Smaal, A., Lindeboom, H., & McLay, C. (2013). Some like it hot: the effect of temperature on brood development in the invasive crab Hemigrapsus takanoi (Decapoda: Brachyura: Varunidae). Journal of the Marine Biological Association of the United Kingdom, 93(01), 189-196. Comments: An increase in water temperature as a result of climate change may result in an increased net reproductive rate in H. takanoi due to earlier onset of the breeding season and increased number of broods per inter-moult period resulting in population growth. Increased temperatures may therefore lead to increased invasiveness of H. takanoi where it is already present, and range extension into locations where its establishment is currently excluded by unsuitable temperature.It can produce up to 50,000 eggs three to four times during the spawning season. |
Reproductive type (?) | Sexual References: van den Brink, A., Godschalk, M., Smaal, A., Lindeboom, H., & McLay, C. (2013). Some like it hot: the effect of temperature on brood development in the invasive crab Hemigrapsus takanoi (Decapoda: Brachyura: Varunidae). Journal of the Marine Biological Association of the United Kingdom, 93(01), 189-196. |
Developmental trait (?) | Brooding Planktotrophy |
Characteristic feeding method / Life stage (?) |
References (not structured): Kon, K., Hoshino, Y., Kanou, K., Okazaki, D., Nakayama, S., & Kohno, H. (2012). Importance of allochthonous material in benthic macrofaunal community functioning in estuarine salt marshes. Estuarine, coastal and shelf science, 96, 236-244. |
Mobility / Life stage (?) |
References (not structured): Boets, P., Lock, K., & Goethals, P. L. (2012). Assessing the importance of alien macro-Crustacea (Malacostraca) within macroinvertebrate assemblages in Belgian coastal harbours. Helgoland Marine Research, 66(2), 175-187. Comments: Pelagic larvae favour the spread of the species |
Salinity tolerance range (?) | Exact range: 0 - 40 References: Mingkid, W. M., Yokota, M., & Watanabe, S. (2006). Salinity tolerance of larvae in the penicillate crab Hemigrapsus takanoi (Decapoda: Brachyura: Grapsidae). Mer, 43(44), 17-21. Shinji, J., Strüssmann, C. A., Wilder, M. N., & Watanabe, S. (2009). Short-term responses of the adults of the common Japanese intertidal crab, Hemigrapsus takanoi (Decapoda: Brachyura: Grapsoidea) at different salinities: osmoregulation, oxygen consumption, and ammonia excretion. Journal of Crustacean Biology, 29(2), 269-272. Comments: Mingkid et al (2006): successful development through metamorphosis occurred only in salinity of 25, 30 and 35. Larvae in 10, 15 and 20 could not pass the megalopal stage, while in salinity 5 only 4 larvae successfully metamorphosed to the second zoeal stage but deceased two days later. Results of the salinity tolerance suggest that the zoea and megalopa of H. takanoi develop in higher salinity conditions and recruit to the wider salinity range when they reached juvenile and adult stage. Shinji et al (2009): Intermolt to premolt males of Hemigrapsus takanoi were exposed to salinities of 0, 10, 20 (control), 30, and 40 ppt. After 2, 4, and 6 h of exposure, oxygen consumption and ammonia excretion were measured. Hemolymph osmolality was measured at the end of 8 h. No mortalities were observed until hemolymph sampling. Hemolymph osmolality was maintained between 570 to 840 mmol/kg. Oxygen consumption increased significantly only at 0 ppt, compared to the control (20 ppt). Ammonia excretion levels showed a remarkable increase at 0 ppt. These results indicate that this species expends increased metabolic effort to tolerate abrupt salinity changes to freshwater compared to brackish or seawater. |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers References: Boets, P., Lock, K., & Goethals, P. L. (2012). Assessing the importance of alien macro-Crustacea (Malacostraca) within macroinvertebrate assemblages in Belgian coastal harbours. Helgoland Marine Research, 66(2), 175-187. Comments: Can possibly outcompete the native Carcinus maenas, because it has similar habitat preferences. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Not known Comments: Not available. |
Known measurable environmental impact? | Known References: AquaNIS. Editorial Board, 2015. Information system on Aquatic Non-Indigenous and Cryptogenic Species. World Wide Web electronic publication. www.corpi.ku.lt/databases/aquanis. Version 2.36+. Accessed 2021-07-23. Brousseau, D.J., Goldberg R., Garza, C. 2014 Impact of Predation by the Invasive Crab Hemigrapsus sanguineus on Survival of Juvenile Blue Mussels in Western Long Island Sound. Northeastern Naturalist, 21: 119-133. Comments: Negative impact on native biodiversity through predation: major mortality of juvenile blue mussel (Brousseau et al. 2014). |
Included in the Target Species list? | Yes Comments: Assessed by the COMPLETE project experts (2021), included in target species list. |
Association with vessel vectors (?) | Ballast waters Biofouling References: Gollasch S (1999) The Asian decapod Hemigrapsus penicillatus(de Haan, 1835) (Grapsidae, Decapoda) introduced in European waters: status quo and future perspective. Helgoländer Meeresuntersuchungen 52: 359-366 Comments: Presumed to have been introduced along the European coast by larvae released from ballast water. Observed in Bremerhaven harbour in the hull fouling of a commercial vessel. |
Last update by | Anna Occhipinti, 2014-04-15 |