World's largest clam species in Palawan hatches over 9M eggs

July 2, 2019 - Palawan

_{World's largest clam species in Palawan hatches over 9M eggs}

Giant Clams don't 'hatch' eggs, they are protandric functional hermaphrodites that 'broadcast spawn' both sperm and then eggs into the water column at around a 15 minute to 3 hour interval. 

Functionally, they are kinda like trees using wind pollination.

MANILA - The first ever on-site spawning of a native Palawan clam species, which is recorded as the largest in the world, has produced over 9 million eggs, a boost to the species' declining population in the country.

According to Malampaya Foundation (MFI), 9.5 million eggs were fertilized from the native giant clams used for breeding at the Western Philippines University (WPU) Hatchery in Binduyan, Puerto Princesa City.

The MFI, along with WPU, presided over the breeding of the clams while the University of the Philippines Marine Science Institute (UPMSI) supervised the activity.

The Tridacna gigas is one of the most endangered clam species and was even declared extinct in the Philippines in the 1980s.

But it was found that the Philippine-native species still exists in Palawan, particularly in Dos Palmas.

“Tridacna gigas is hard to propagate because the population is few. We need to really go to the brood stock (source) to collect eggs and sperms, compared to other species of clams which numbers can still afford to be brought into laboratories,” said Dr. Lota Creencia of WPU College of Fisheries and Aquatic Sciences.

MFI said that once the bred clams have aged "sufficiently," they will be deployed to its marine protected areas in northern Palawan. 

The spawning activity was in line with MFI’s “String-of-Pearls of Project” that began last year, successfully multiplying two other species of giant clam, namely Tridacna squamosa and Hippopus hippopus, which will be deployed to effectively-managed marine protected areas in communities in North Palawan.

- John Gabriel Agcaoili, ABS-CBN News

Surely, for such rare occurrences, these babies of World's largest clam species are to be protected... 

What a beautiful amazing nature UW event ! ;)

#Palawan #Philippines #Blogging #WorldLargestClam #HatchesOver9MEggs