Tag: Sailfish

Costa Rica offshore fishing

The Science of Offshore Fishing

Effective management of offshore fisheries helps pelagic species become hard-fighting machines

Rather than droning on about stock-assessment updates, I’d like to discuss what drives anglers to ensure that pelagic species like tuna, wahoo and billfish are properly managed. Hopefully most folks realize that these creatures need to be conserved because they have a natural role in pelagic ecosystems as top-level predators. Anglers, however, are likely to have their own reasons to make sure there is an ample supply of these critters.

All of the aforementioned species share similar characteristics that make them endearing to recreational anglers. Most are aesthetically pleasing to the eye, even beautiful, and a few grow to colossal sizes. Some, in the case of tunas and wahoo, make for some of the best table fare that the ocean can offer. But there is one defining feature that really makes anglers love these fish: They are high-performance animals that pull like hell on the end of the line. The thrill of a big tuna, wahoo or marlin effortlessly pulling drag from a reel is one that is hard to beat.

These species’ capacity for speed and stamina is derived from unique adaptations evolved over the millennia that are truly fascinating. Tunas, for example, have a muscular composition that sets them apart from the rest of the pack and makes them masters of both speed and stamina. Virtually all fish possess a combination of fast- and slow-twitch muscle. Fast-twitch, or white muscle, as the name implies, is designed for burst speed. However, its white appearance means that it is not highly vascularized. As a result, white muscle can fatigue quickly and doesn’t afford much in the way of stamina.

Stop Illegal Fishing in Costa Rica

Slow-twitch muscle, which tuna have a lot of, is red because it is highly vascularized and well-­oxygenated, so it provides the necessary stamina for extended cruising — or in the case of a big tuna, thoroughly beating you up, whether you’re fighting one in the chair or standing up. The unique positioning of red muscle within white muscle, along with an amazing countercurrent vascular system, allows tunas such as bluefin the ability to generate and retain heat, so their body temperatures can be significantly higher than the surrounding ambient water temperatures. Keeping their eyes, brain and muscles warm gives these fish a performance edge in colder waters.

Pelagic species don’t lead ­sedentary lives; they derive oxygen from the water through ram ventilation, where the act of swimming actively moves water over their gills. As such, gill adaptations are critical for supplying oxygen to brain and muscle. Tunas have the largest gill surface area relative to size, with billfish, wahoo and the rest of the mackerels right behind with more surface area than virtually any other fish. Tuna’s individual gill filaments are also uniquely shaped to allow them to be tightly packed without collapsing during high-speed swimming to maximize surface area and oxygen exchange.

More Conservation News

Billfish possess unique spinal ­adaptations that benefit their energetic lifestyle and acrobatic tendencies. They have highly modified neural and hemal spines that overlap the ­intervertebral joints and interlock with fibrous connective tissues. This particular vertebral morphology is thought to act like a spring, which transmits force and power to the tail. These spinal adaptations are also thought to guard against shearing and compression of the intervertebral joints during bending, which also might explain how marlin can display such wild acrobatic gyrations without throwing out their backs.

This is just a brief glimpse into what makes these species some of the world’s most supremely engineered fish. The adaptations make them the game fish that they are, but it’s important to note that it can take millions of years of evolution to gain these refinements. That is why it is critical that we do all we can to ensure that these species are properly managed and conserved.

Article from Marlin Magazine

http://fishcostarica.org/marlin-sailfish-sat-tag/
http://fishcostarica.org/fecop-tips-how-to-handle-sailfish-and-marlin/
http://fishcostarica.org/fishing-species-pacific-blue-marlin/
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Costa Rica Fishing Species – Sailfish

Costa Rica Indo-Pacific Sailfish

 

From IGFA Fish Database

Shaw & Nodder, 1791); ISTIOPHORIDAE FAMILY; also called spindlebeack, bayonetfish

An Excerpt from Costa Rica Sailfish for Dummies by Todd Staley Communications Director, FECOP

Todd Staley FECOPThe lifetime of a sailfish varies from 4 to 10 years. Most of the juveniles spend their first few years off the coast of Mexico. That doesn’t necessarily mean they were born there. For example, a west coast Florida tarpon starts its life 100 miles or so off the beach, but spends its early years in the estuaries. The largest sailfish and the long-standing world record of 222 pounds came from their farthest range to the south in Ecuador.

The tropical Pacific is really not a very inviting place for sailfish. The low oxygen content in the water will not support them, but two famous currents bring in healthy water. The Humboldt Current flows north from Chile and Peru and collides with the California Current flowing south from the U.S. and Mexico off the coast of Central America, forming a “tongue” of current that supports sailfish, though to a depth of only 100 meters or less. Unlike the striped marlin that is caught off Mexico but might spawn off Australia, the eastern tropical sailfish’s range is limited to the coastal waters of the two currents and the tongue formed off Central America.

Sailfish are the fastest fish in the sea

Another phenomenon happens each year: Three distinct and powerful winds blow from land offshore. They start in December or January and blow until March or April. In Mexico, winds that start in the Gulf of Mexico push across the Tehuantepec lowlands offshore into the Pacific. Likewise, the Papagayo winds from Lake Nicaragua push offshore across Nicaragua near the Costa Rican border. Also, a Caribbean wind current crosses Panama heading into the Pacific near the Panama Canal.

As the Pacific surface water is pushed offshore, the upwelling sends to the surface oxygen-depleted water that cannot support sailfish. The entire population is forced into pockets of healthy water, which happen to lie in front of windless parts of southern Mexico, Guatemala, Costa Rica and parts of Panama. During this period, El Salvador, Nicaragua and other parts of Panama are nearly devoid of sailfish. This is the equivalent of taking the entire population of San José and moving everybody to the Pacific coast for four months out of the year, with no one living in between. Fortunately for the sailfish, their main food source, squid and sardines, follow the same pattern.

 

The reality is that these areas do not have a tremendous abundance of fish, but the whole population is forced to share these pockets. When there is a strong El Niño, the winds do not blow, so the population is not condensed into oxygen-healthy pockets caused by the normal upwelling. The surface waters also warm, and peak-season fishing results in Guatemala and Costa Rica drop dramatically.

Costa Rica has the benefit of two peak sailfish seasons. From the Gulf of Nicoya south, the peak is January through April. The Guanacaste region to the north begins to peak in May after the winds die and the fish begin to move freely out of prisons formed in Guatemala and southern Costa Rica.

Sailfish Facts Costa Rica

Dr. Ehrhardt’s studies have shown that a strong management plan is needed with all Central American countries working together. The Costa Rican Tourist Fishing Federation (FECOPT) is working with sport and commercial fishermen and the government on management plans within Costa Rica. In addition, CABA, The Billfish Foundation and local groups are working with Central American governments to form a united effort to conserve the region’s sailfish populations.

Sailfish Release

 

Inhabits tropical and subtropical waters near land masses, usually in depths over 6 fathoms, but occasionally caught in lesser depths and from ocean piers. Pelagic and migratory, sailfish usually travel alone or in small groups. They appear to feed mostly in midwater along the edges of reefs or current eddies.

  Costa Rica sailfish fishing conservation

Its outstanding feature is the long, high first dorsal which is slate or cobalt blue with a scattering of black spots. The second dorsal fin is very small. The bill is longer than that of the spearfish, usually a little more than twice the length of the elongated lower jaw. The vent is just forward of the first anal fin. The sides often have pale, bluish gray vertical bars or rows of spots.

More on the Saifish from the IGFA.org Fish Database

Its fighting ability and spectacular aerial acrobatics endear the sailfish to the saltwater angler, but it tires quickly and is considered a light tackle species. Fishing methods include trolling with strip baits, plures, feathers or spoons, as well as live bait fishing and kite fishing. The most action is found where sailfish are located on or near the surface where they feed.

Recent acoustical tagging and tracking experiments suggest that this species is quite hardy and that survival of released specimens is good

FECOP Fish Facts: Pacific Sailfish

Fastest Fish in the Sea at up to 70mph

World Record 222 lbs (Ecuador)

Common Name: Sailfish

Scientific Name: Istiophorus

Type: Fish

Diet: Carnivores

Group Name: School

Average life span in The Wild: 4 years

Feeding Tactics: Uses its bill to stun individual fish or slash groups of fish

Size: 5.7 to 11 ft

Weight: 120 to 220 lbs

Size relative to a 6-ft man:

 

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Why a Sailfish is Worth More Alive then Dead

How to Safely Estimate the Size of a Sailfish

New to Sailfish? Start Here – Sailfish for Dummies

The Top Ten Fastest Fish in the Ocean

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Costa Rica Sailfish Season

Costa Rica Sport Fishing – Sailfish for Dummies

Todd Staley Fishing Column Tico TimesBy Todd Staley published for The Tico Times
I’ve never been one to be afraid or too proud to ask for help. Some things I don’t understand, and with others I’m all thumbs. That’s why I’ve always kept close friendships with boat mechanics, fishing guides, reel repair people, doctors, scientists and even shrinks.

I’ve wondered for some time what makes Central America so special when it comes to sailfish. Why does the season peak from December through April? Why are the fish so big in Costa Rica, and why don’t we catch juvenile fish? Where do the fish go at the end of the season? Do they go offshore or do they go south or north?

Several years ago, Dr. Nelson Ehrhardt from the University of Miami and scientific adviser to the Central American Billfish Association (CABA) contacted me and asked if I could share my data collected from operating the largest billfishing resort in Central America for the past 10 years. I gladly agreed, and learned he had been doing an extensive study in Mexico and Central America for the last two years.

Each meeting with him in San José and at the resort in Puerto Jiménez, I learned a little more about blue-water ballerinas. It’s amazing how professionals can put all kinds of stuff in perspective and make it understandable. Dr. Ehrhardt should write “Sailfish for Dummies.”

Costa Rica Fishing Destinations

The same population of sailfish – pez vela in Spanish – traverses the eastern tropical Pacific from southern Mexico to Ecuador. It is one of the most condensed sailfish populations in the world. The lifetime of a sail is 10 to 15 years. Most of the juveniles spend their first few years off the coast of Mexico. That doesn’t necessarily mean they were born there. For example, a west coast Florida tarpon starts its life 100 miles or so off the beach, but spends its early years in the estuaries. The largest sailfish and the long-standing world record of 222 pounds came from their farthest range to the south in Ecuador.

The tropical Pacific is really not a very inviting place for sailfish. The low oxygen content in the water will not support them, but two famous currents bring in healthy water. The Humboldt Current flows north from Chile and Peru and collides with the California Current flowing south from the U.S. and Mexico off the coast of Central America, forming a “tongue” of current that supports sailfish, though to a depth of only 100 meters or less. Unlike the striped marlin that is caught off Mexico but might spawn off Australia, the eastern tropical sailfish’s range is limited to the coastal waters of the two currents and the tongue formed off Central America.

Another phenomenon happens each year: Three distinct and powerful winds blow from land offshore. They start in December or January and blow until March or April. In Mexico, winds that start in the Gulf of Mexico push across the Tehuantepec lowlands offshore into the Pacific. Likewise, the Papagayo winds from Lake Nicaragua push offshore across Nicaragua near the Costa Rican border. Also, a Caribbean wind current crosses Panama heading into the Pacific near the Panama Canal.

As the Pacific surface water is pushed offshore, the upwelling sends to the surface oxygen-depleted water that cannot support sailfish. The entire population is forced into pockets of healthy water, which happen to lie in front of windless parts of southern Mexico, Guatemala, Costa Rica and parts of Panama. During this period, El Salvador, Nicaragua and other parts of Panama are nearly devoid of sailfish. This is the equivalent of taking the entire population of San José and moving everybody to the Pacific coast for four months out of the year, with no one living in between. Fortunately for the sailfish, their main food source, squid and sardines, follow the same pattern.

The reality is that these areas do not have a tremendous abundance of fish, but the whole population is forced to share these pockets. When there is a strong El Niño, the winds do not blow, so the population is not condensed into oxygen-healthy pockets caused by the normal upwelling. The surface waters also warm, and peak-season fishing results in Guatemala and Costa Rica drop dramatically.

Costa Rica has the benefit of two peak sailfish seasons. From the Gulf of Nicoya south, the peak is January through April. The Guanacaste region to the north begins to peak in May after the winds die and the fish begin to move freely out of prisons formed in Guatemala and southern Costa Rica.

Dr. Ehrhardt’s studies have shown that a strong management plan is needed with all Central American countries working together. The Costa Rican Tourist Fishing Federation (FECOPT) is working with sport and commercial fishermen and the government on management plans within Costa Rica. In addition, CABA, The Billfish Foundation and local groups are working with Central American governments to form a united effort to conserve the region’s sailfish populations.

So now I’m standing on the stern of this boat with half a chicken’s worth of pink-dyed feathers and a fly rod in my hand, waiting for a ballerina to pop up, mulling over everything I learned about sailfish. If anyone has any advice on how to make a sailfish a dummy, I’m all ears!

  www.ticotimes.net/

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Costa Rica fishing Satelite Tagging Program

FECOP to Tag 25 Marlin and 25 Sailfish – Seeking Volunteers

Dr. Larry Crowder to SAT tag 25 marlin and 25 sailfish in Costa Rica this season. Dr Larry Crowder and FECOP will be placing Satellite Tags in 25 marlin and 25 sailfish this upcoming season. Looking for volunteers to either be trained to tag these fish or allow a biologist to ride along and tag. Especially interested to tag some marlin on FADs to see what these fish are doing. Dr. Crowder will be in the country September 23-27 to speak to prospective taggers. Leave message and we will contact you (Marlin Magazine Photo) for more information:

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