海底“种”砗磲

Core Insights - The article discusses the endangered status of Tridacna gigas, a giant clam species, and the efforts by scientists to protect and restore its population through artificial breeding and habitat restoration [4][5][6]. Group 1: Unique Characteristics of Tridacna gigas - Tridacna gigas can grow up to one or two meters and has a unique symbiotic relationship with zooxanthellae, allowing it to thrive on sunlight and live over a hundred years [2][3]. - It plays a crucial role in the marine ecosystem by filtering thousands of liters of seawater daily, thus maintaining the clarity of coral reefs [3]. Group 2: Ecological Importance - The shell of Tridacna gigas provides habitat for various marine species, acting as a "marine apartment" for small crabs, shrimp, and fish [3]. - Its calcium carbonate shell contributes to reef formation and protects coral reefs and coastlines from wave impacts [3]. Group 3: Threats to Survival - Tridacna gigas faces multiple threats, including illegal trade, climate change, and habitat destruction due to human activities such as land reclamation and coral reef mining [4][5]. - A study indicated that the population of Tridacna gigas has decreased by over 80% in the past century, leading to its classification as a critically endangered species [5]. Group 4: Conservation Efforts - Chinese scientists are undertaking artificial breeding of Tridacna gigas to rebuild its population, utilizing controlled environments to stimulate breeding [6][8]. - The survival rate of released juvenile Tridacna gigas has significantly improved, with successful integration into natural habitats observed in demonstration areas [8].