Between February and August 2001, two dolphins were accidentally killed in bottom-set nylon gillnets used to catch crabs - locally known as matang quatro nets. Unconfirmed reports from fishermen indicate that three additional dolphins may have been killed in gillnets during the same seven-month period (Smith et al. in press). Although the dolphins are not believed to be hunted in Malampaya Sound, their value for human consumption means that those found alive in gillnets may be taken for food rather than released.
Although gillnet entanglement is believed to be the dominant threat to the population (Smith et al. in press), other potential threats include incidental takes in fish corrals (baklads), liftnets (bukatot) and crab traps, prey depletion from increased fishing pressure and increased inputs of organic wastes leading to eutrophication (Dolar et al. 2002).
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