First wild record of Australian redclaw crayfish Cherax quadricarinatus (von Martens, 1868) in the East Coast of Peninsular Malaysia

Genetic Variability of Wild Populations of Invasive Redclaw Crayfish (Cherax quadricarinatus) von Martens 1868 Across Peninsular Malaysia

“…Although, the findings may not reflect the mechanism and channel for which each haplotype has been introduced. But, a largely distributed Hap1 may be initially begun with the population from Johor 'first wild population recorded' (Chang et al, 2001;Naqiuddin et al, 2016), and certainly expand (transmitted via flooding or intentional release) and established down to the various freshwater bodies across the eastern and western Peninsular Malaysia (Norshida et al, 2021). For example, the capture of many young and matured redclaw crayfish from several freshwater habitats in Peninsular Malaysia indicated the ultimate reproductive success of the species (Nasir et al, 2020;Sallehuddin et al, 2021).…”

“…Redclaw crayfish are tolerant to a wide range of habitual geographical conditions which makes them resilient to natural changes (Haubrock et al, 2021). Norshida et al (2021) deduced that redclaw crayfish are the only invasive non-native crayfish that have established wild populations in Malaysia. Their wild invasion success might be owing to the multiple introduction sources and different maternal lineages.…”

“…The Australian redclaw crayfish, Cherax quadricarinatus (von Martens 1868), is a freshwater invertebrate native to northern Australia and southern New Guinea invaded several countries including Malaysia (Patoka et al, 2016;Norshida et al, 2021). A culture shock of redclaw crayfish was first introduced to Malaysia in the early 2000s and has predominantly been cultured in the southern part of Peninsular Malaysia (Chang, 2001).…”

“…Undeniably, the introduction of redclaw crayfish into Malaysia has some detrimental consequences both environmentally and economically. These include biodiversity loss (Norshida et al, 2021), habitat destruction (Nasir et al, 2020), as well as disease transfer to other native freshwater decapod crustaceans (Sallehuddin et al, 2021). By burrowing activity and grazing on macrophytes, they might disrupt the balance of the receiving environment via competition for shelter and resources, spread various diseases, direct predation on native species and fish eggs, and alter habitat (Naqiuddin et al, 2016).…”

Crayfish Research: A Global Scientometric Analysis Using CiteSpace

“…In this scientometric analysis, the descriptive and co-citation datasets were generated to explain the current knowledge of the selected research themes. Notably, the topics focused on crayfish in the published reviews ranged from the aquacultural potential of crayfish [ 4 , 24 ], environmental and culturing practices [ 25 , 26 ], records of their introduction in the European and African regions [ 27 , 28 ], and crayfish-related diseases [ 26 , 29 , 30 , 31 , 32 ] to ecological interactions and biodiversity [ 33 , 34 , 35 , 36 ].…”