International Journal of Molecular Ecology and Conservation, 2025, Vol.15, No.4, 153-162 http://ecoevopublisher.com/index.php/ijmec 16 0 detecting changes in allele frequencies, it is possible to determine whether control measures have caused population bottlenecks or interrupted gene flow. Furthermore, for invasive populations mixed with multiple sources, genetic data can help identify whether hybrid offspring exist, thereby understanding the evolutionary dynamics of the invasive population (Bock et al., 2016). 6.2 Prediction model of global communication potential In order to prevent the further spread of black fish in a forward-looking manner, it is very necessary to establish a prediction model for the global transmission potential. This type of model usually integrates factors such as species niche, climate matching, human activities and diffusion capacity to simulate the colonization probability and possible diffusion path of black fish in non-invasive areas (Herborg et al., 2007). The climate matching model predicts which regions have the climatic conditions for the survival and reproduction of black fish by correlating the environmental parameters of the original habitat of black fish with the climate data of the target area (Poulos et al., 2012). Human transmission factors need to be incorporated into the model. A simple niche model may underestimate the possibility of invasion, as artificial introduction can break through ecological barriers. The diffusion model should take into account the diffusion ability of black fish, including both natural and artificial channels. In areas connected by river networks, black fish can spread along the water, and it is necessary to simulate the speed of their expansion along the water system (Odenkirk and Isel, 2016). 6.3 Exploration of genetic control and ecological restoration strategies In areas where black fish have invaded and are difficult to eradicate, management strategies need to gradually expand from traditional physical or chemical removal to control and restoration at the genetic and ecological levels. Genetic control technology is highly anticipated. For instance, the idea of "genetic biological control" suggests that the population growth of a target species can be suppressed by manipulating its genes. Ecological restoration is also an important part of the long-term governance of invasive black fish. The invasion of black fish can lead to changes in the food web structure and the decline of native fish populations. The ecosystem will not recover automatically after simple removal of black fish and requires human assistance (Britton et al., 2010). There is also the view that guiding the fishing industry to catch and utilize black fish is one of the methods to control black fish. Scientific research cooperation between the invaded areas and the native habitats should be strengthened. The natural enemies and diseases of black fish in the native ecosystems should be learned, and the introduction of symbiotic pathogens as biological control factors should be attempted (Britton et al., 2011). 7 Concluding Remarks Black fish, as typical representatives of invasive species, have demonstrated astonishing diffusion capabilities and ecological adaptability on a global scale. Black fish have rich genetic diversity and significant lineage differentiation in their native habitats. Different species and populations have evolved unique life history strategies and are highly adapted to their respective environments. This genetic and ecological preparation enables it to quickly establish a population and expand to the surrounding areas once it enters new regions through human activities by taking advantage of its own biological strengths (such as tolerance to harsh environments, strong reproductive capacity and strong predatory ability, etc.). The retention of genetic variations and adaptive evolution during the invasion process further promoted the spread of black fish, enabling them to cope with the challenges of different ecological conditions. This series of discoveries poses challenges to the management of biological invasions: The monitoring and control of black fish require a multidisciplinary integrated strategy. From the perspective of molecular ecology, using population genetics methods for risk assessment and traceability analysis can more accurately locate high-risk areas and the sources of invasion. Model predictions based on global data can help us anticipate possible diffusion trends and prioritize prevention. In the face of already colonized populations, only by comprehensively applying multiple measures such as ecological, genetic and social management can a lasting control effect be achieved. The problem of black fish invasion is also a microcosm of the mutual feedback between human activities and nature. To this end, countries need to enhance collaboration and share experiences in scientific research and management. At the source, supervision over species export should be strengthened. In the input area, a rapid
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