In a first, scientists successfully induce spawning in wild bonefish

In a first, scientists successfully induce spawning in wild bonefish
A bonefish larva 30 hours after hatching. Scientists have for the first time induced spawning in wild bonefish. Credit: Florida Institute of Technology

A team led by Florida Institute of Technology's Jonathan Shenker and Paul Wills of Harbor Branch Oceanographic Institute at Florida Atlantic University has for the first time successfully induced spawning of wild bonefish and hatched the fertilized eggs into larvae.

The Bonefish Restoration Research Project, an initiative sponsored by Bonefish & Tarpon Trust, has been attempting since 2016 to spawn and raise in captivity. The researchers reached this milestone during field experiments in January in the Bahamas, with assistance from the Cape Eleuthera Institute.

The team successfully used injections of reproductive hormone to induce final-mature eggs in a female that had been captured from the wild in a pre-spawning state of development.

Bonefish are integral to Florida's travel and tourism industry. It is estimated that bonefish, and other species in the 'flats fishery' contribute more than $465 million annually to the economy in the Florida Keys.

"Ultimately, success in this project will give us another tool in our toolbox as we work to restore the bonefish population in the Florida Keys," said Bonefish & Tarpon Trust President Jim McDuffie.

Through BRRP, the Bonefish & Tarpon Trust, in collaboration with the National Fish and Wildlife Foundation and Harbor Branch Oceanographic Institute, is pioneering the spawning and rearing of bonefish in captivity to provide stock to replenish the Florida Keys bonefish population as part of the broader restoration strategy. The primary goals of the five-year-long program, which began in mid-2016, are to learn how to spawn bonefish in aquaculture systems, rear the resulting larvae and juvenile fish, and ultimately, to help population restoration efforts in the Keys ecosystem.

"We now know that we can indeed get bonefish to spawn in captivity," Shenker said. "This success will help us optimize methods to induce spawning of fish brought in from the natural habitat, and to spawn fish maintained for a long time in a controlled aquaculture facility."

Wills added, "We are gaining a wealth of information about the biology of this species from this one successful spawn, and future spawns will only yield more."

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Citation: In a first, scientists successfully induce spawning in wild bonefish (2018, February 9) retrieved 13 April 2021 from
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