AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Ictalurus punctatus [WoRMS] | |
Authority | (Rafinesque, 1818) | |
Family | Ictaluridae | |
Order | Siluriformes | |
Class | Actinopterygii | |
Phylum | Chordata | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: North America |
Life form / Life stage (?) |
References (not structured): Schoonover, D. 2004. "Ictalurus punctatus" (On-line), Animal Diversity Web. Accessed July 18, 2024 at https://animaldiversity.org/accounts/Ictalurus_punctatus/ Comments: After fertilization the eggs are protected and also aerated by the male. The eggs are adhesive and their size ranges from 2.4 to 3.0 mm in diameter. The yolk sac is still present in the larval stage, and it is still large in comparison to the larvae in this stage. The larvae do not have teeth or pigment. They remain close to the nest at first but then move into shallow waters. The next stage is the juvenile; these individuals are found in shallow waters and generally only have up to 10 rays on the pectoral fins. Juveniles stay together for several days or weeks and feed on small invertebrates. |
Sociability / Life stage (?) |
Comments: Ictalurus punctatus are solitary except during mating courtship and protection of young. |
Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Sexual References: Engle, C., Kumar, G. 2023. Ictalurus punctatus (channel catfish). CABI compendium datasheet, 31. Comments: Ictalurus punctatus is monogamous and has an extensive courtship behavior that might only last one mating season. The male and female mate in the summer but the relationship is established earlier in the year. Mating takes place when the male swims along the female in the opposite direction. |
Developmental trait (?) | Parental care Spawning References: Engle, C., Kumar, G. 2023. Ictalurus punctatus (channel catfish). CABI compendium datasheet, 31. Comments: The mass of eggs is deposited in a nest built by the female or by both the male and the female. After mating has occurred the male chases away the female and then guards the eggs until they hatch. Channel catfish spawn in the summer. After hatching the juveniles take from two days to two weeks until they are independent. |
Characteristic feeding method / Life stage (?) |
References (not structured): Engle, C., Kumar, G. 2023. Ictalurus punctatus (channel catfish). CABI compendium datasheet, 31. Haubrock, P. J., Balzani, P., Johovic, I., Inghilesi, A. F., Nocita, A., Tricarico, E. 2018. The diet of the alien channel catfish Ictalurus punctatus in the River Arno (Central Italy). Aquatic Invasions, 13, pp. 575-585. Comments: I. punctatus are opportunistic omnivores and use food items in proportion to availability. Young fish feed primarily on aquatic detritus, aquatic insects, and zooplankton; adults feed primarily on aquatic insects, freshwater crayfish, and small fish. |
Mobility / Life stage (?) |
References (not structured): Engle, C., Kumar, G. 2023. Ictalurus punctatus (channel catfish). CABI compendium datasheet, 31. |
Salinity tolerance range (?) | Exact range: 0 - 15 References: Allen, K. O. 1971. Effects of salinity on growth and survival of channel catfish, Ictalurus punctatus (Rafinesque), eggs through yearlings. Louisiana State University and Agricultural & Mechanical College. Smithsonian Environmental Research Center (SERC). (n.d.). Limulus polyphemus (Linnaeus, 1758). In: Marine Invasions Lab, Smithsonian Environmental Research Center. Retrieved from https://invasions.si.edu/nemesis/species_summary/163998 [Accessed 18 July 2024]. Comments: Channel catfish can live in both fresh and salt water and brackish water yet they are generally found in freshwater environments. Prefer salinities below 2-4 PSU but tolerate salinities up to 15 PSU. |
Habitat modifying ability potential (?) | Unknown Comments: Not available. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Anthropogenic chemical compounds References: Leaner, J. J., Mason, R. P. 2002. Methylmercury accumulation and fluxes across the intestine of channel catfish, Ictalurus punctatus. Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 132(2), pp. 247-259. |
Known human health impact? | Known References: Parra-Bracamonte, G. M., Perales-Torres, A. L., Magaña-Monforte, J. G., Lara-Rivera, A. L., Segura Correa, J. C., García-Ruiz, Y. 2024. Channel catfish, a species with potential deposition of human-beneficial fatty acids. Latin american journal of aquatic research, 52(1), pp. 1-12. Comments: Fatty acids from fish are of great interest for human consumption, and the channel catfish (Ictalurus punctatus) is one of the most important aquaculture species in Mexico and perhaps in other countries with similar resource endowments. |
Known economic impact? | Known References: Kaliba, A. R., Engle, C. R. 2004. The economic impact of the catfish, Ictalurus punctatus, industry on Chicot County, Arkansas. Journal of Applied Aquaculture, 15(1-2), pp. 29-59. |
Known measurable environmental impact? | Known References: Faria, L., Alexander, M. E., Vitule, J. R. 2019. Assessing the impacts of the introduced channel catfish Ictalurus punctatus using the comparative functional response approach. Fisheries Management and Ecology, 26(6), pp. 570-577. Comments: I. punctatus is a potential threat to small endangered fish species; therefore, policies to avoid escapes from aquaculture should be created and the abundance of I. punctatus controlled. |
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) |
Association with vessel vectors (?) | Unknown Comments: Not available. |
Created by | Aleksas Narščius, 2018-02-04 |
Last update by | Sandra Gečaitė, 2024-07-18 |