First hermaphroditic ‘tahong’ found in PHL | Bless Aubrey Ogerio

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First hermaphroditic ‘tahong’ found in PHL | Bless Aubrey Ogerio
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A GROUNDBREAKING discovery in the Philippines has unveiled the first hermaphroditic green mussel, locally known as tahong, found in mussel farms within the inner Malampaya Sound in Palawan.

Released on November 26, the study titled “First Record of Hermaphroditism in Green Mussels in the Philippines” was authored by Adzel Adrian Baldevieso, Ma. Shirley Golez and Fiona Pedroso from Mindanao State University-Naawan and University of the Philippines Visayas.Of the 540 samples subjected to histological analysis, one was identified as a hermaphrodite, representing 0.18 percent of the total sample.

“Such conditions can lead to intersex traits, which might indicate underlying environmental problems,” the researchers said. The thesis, titled “Pilot Testing of Longline Method for Green Mussel Culture in Traditional Areas,” initially focused on the connection between the reproductive cycle and meat quality of green mussels, he said.

“However, there was no conclusive evidence to determine whether this hermaphroditism falls into protandry or protogyny since it is not clear which sex cells became active first,” they added.Hermaphroditism is common among mollusks, with some studies showing that about 400 of the 10,000 bivalve species exhibit this trait, including scallops, freshwater clams, and giant clams.

A skewed sex ratio, however, could disrupt the typical male-to-female balance and affect population growth, compromising genetic health and long-term survival.

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