was highlighted for further taxonomic investigation because barcoding indicated unidentified species of this genus. Possible hybrids between Oreochromis species were detected. Average Kimura 2-parameter genetic distances were 0.24% (within species), 8.31% (between species), 9.69% (within family), and 24.86% (between families). A total of 75 specimens of 12 different species belonging to nine genera, eight families, and five orders were DNA barcoded using the mitochondrial cytochrome c oxidase subunit I (COI) gene. This study represents the first molecular survey of the ichthyofauna of Lake Lanao. Over the years, there has been a steady decline in the abundance and diversity of endemic fishes in the lake because of overfishing and introduction of non-native species. A Meranaw is a spoken or language of Maranao people.Lake Lanao, the second largest lake in the Philippines and one of the 15 ancient lakes in the world, used to contain 20 endemic cyprinid species, which had attracted the attention of evolutionary biologists in the past. The hole became Lake Lanao and the outlet became the Agus river. In response, the angels enlisted the help of the Four Winds to gouge out an outlet. The hole that was left was filled with water and threatened to drown the rest of the world. It is said that a group of angels under the command of Gabriel removed the vast population of Mantapoli to prevent the world from tipping over. Notes: (*) – Biggest native species in Lake Lanao (**) – Species of high commercial value In cultureĪ Maranao myth describes the formation of the lake.
Around 42 endemic crab species can also be found in Lake Lanao. However, the Department of Agriculture and the Bureau of Fisheries and Aquatic Resources stated that soil erosion from indiscriminate logging and extensive land use and farming are the problems that caused the algae contamination. Initially, poor sewage and agricultural waste management were seen as the culprit to the contamination. It is believed that overfishing, pollution and competition from introduced species caused the extinction of the remaining.In October 2006, a study from the Mindanao State University discovered massive algae contamination in Lake Lanao. An investigations in 1992 only managed to locate three of the endemic fish species, and only two (Barbodes lindog and B. It also supports a large number of waterfowl.
The lake is (or was) home to 18 endemic species of cyprinid fish in the genus Barbodes (most were formerly in Puntius). Lake Lanao was proclaimed as a watershed reservation in 1992 through Presidential Proclamation 971 to ensure protection of forest cover and water yield for hydropower, irrigation and domestic use. The name Meranaw was derived from the name of the lake and it means “the people living around the lake”. The lake is a home of myths and legends of the Meranaw tribe. A hydroelectric plant installed on the Lanao Lake and Agus River system generates 70% of the electricity used by the people of Mindanao. Its only outlet is the Agus River, which flows northwest into Iligan Bay via two channels, one over the Maria Cristina Falls and the other over the Linamon Falls. The basin is shallowest towards the north and gets progressively deeper towards the south. It has a maximum depth of 122 m (400 ft), and a mean depth of 60.3 m (198 ft). The lake was formed by the tectonic-volcanic damming of a basin between two mountain ranges and the collapse of a large volcano. With a surface area of 340 km2 (130 sq mi), it is the largest lake in Mindanao, and the second largest lake in the Philippines and counted as one of the 15 ancient lakes in the world.
Lake Lanao (Maranao: Ranao or Ranaw)is a large lake in the Philippines, located in Lanao del Sur province in the country’s southern island of Mindanao.
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