NASSAU GROUPER: VULNERABLE, ENDANGERED… & NOW PROTECTED


Nassau Grouper ©Melinda Riger @ GB Scuba copy

NASSAU GROUPER: VULNERABLE, ENDANGERED… & NOW PROTECTED

The Nassau grouper Epinephelus striatus is one of a number of Caribbean grouper species found generally in the Northern Bahamas and specifically in Abaco waters. Others include the Black, Tiger, and Yellowfin groupers, the Red Hind,and the Graysby. The Nassau grouper is special, however, not least because (unlike the others) it is on the IUCN Red List as an Endangered Species and is also a US National Marine Fisheries Service Species of Concern. It is considered the most important of the groupers for commercial fishing in the Caribbean, and the IUCN listing data suggests that a population decline of 60% occurred over the last three generations (27-30 years), a startling rate. The current population size is estimated at >10,000 mature individuals.

Nassau Grouper ©Melinda Riger @ G B Scuba copy 2

The Nassau Grouper is a creature of the coral reefs in the Caribbean and adjacent seas, though it can also be found in deep water. It feeds in the daytime on small fish and small crustaceans such as shrimps, crabs and lobsters. It lurks in caves and recesses in the reef, sucking in the prey that passes unsuspecting by. The coloration of an individual fish may vary considerably with conditions, and it can adapt its colour to its surroundings as camouflage.  

Tiger grouper meets Nassau grouperNassau & Tiger Grouper ©Melinda Riger @ Grand Bahama Scuba  copy

Spawning takes place in December and January as the seawater cools, always at full moon, and always in the same place. In the moonlight, huge numbers of the grouper gather together to mate in a mass spawning aggregation. This may continue for several days. However, the species is slow breeder, which is why overfishing is particularly damaging to the population as the depleted stock cannot readily be replaced.

3846_aquaimages Wiki

CONSERVATION ISSUES

There are other besides factors commercial overfishing that make the Nassau grouper so vulnerable, including fishing during the breeding season; taking undersized fish; pollution and reef decline; habitat loss; and invasive species. The spawning areas are especially vulnerable to exploitation. In the Bahamas, as elsewhere,  the government has now instituted a closed fishing season for the Nassau grouper. Here is the BREEF  flyer, just circulated – and in fact the reason for this post, which reminded me that I had planned to write about this fish! 10382222_10152869346685953_7443797899832698038_o

THREATS

The Bahamas National Trust sums up the multiple threats in this uncompromising way:

Nassau grouper is eaten by barracudas, lizard fish, dolphins, sharks and other large predators of the reef community. But the predators that have the biggest impact on the grouper population are humansPeople are fishing groupers before they can grow to maturity and reproduce. Sex change may also cause a problem. In undisturbed areas there are usually equal numbers of male and females. In heavily fished areas there are often three or more times more females than males. This means many eggs will not be fertilized during spawning. Other threats include, habitat destruction, coral breakage from divers, siltation from construction, runoff from logging and agriculture, dredging, sewage, oil spills and other contaminants that harm coral reefs where Nassau Groupers live.

grouperEpinephelus_striatus_2

There’s an extent to which a country can be judged on its attitude to wildlife from the stamps it chooses to issue. It’s something to do with appreciation and promotion of the country’s natural resources. For example, North Korea rates nil in this respect, with stamps involving scary weaponry, flags, marching and eerily glowing leaders – not a single sparrow to be seen.  By fortunate contrast the Bahamas and its Postal Service score very highly in celebrating the diversity of the wildlife of the islands. The Nassau Grouper was first featured on Bahamas stamps as long ago as 1971, some 25 years before the IUCN Red Listing, and probably before the sharp decline in population numbers had even begun.

bahamas-1971-nassau-grouper-sg-363-fine-used-19448-p

In 2012 the Bahamas Postal Service released ‘a new definitive 16 stamp series’ depicting the marine life of The Bahamas. The Nassau has been promoted from 5c in 1971 to 70c in 2012. That’s inflation for you.

bahamas-marine-life-stamps2

Finally in 2013 BREEF’s 20 years of marine conservation was commemorated with a distinguished and colourful set of 8 stamps, noting in their release: ‘Two of the new stamps feature the Nassau Grouper, a now endangered species that has experienced severe population decline throughout the region… BREEF is well known as an advocate for an annual closed season for the iconic Nassau Grouper during its winter breeding period. The push for the closed season was based on scientific evidence of population collapses throughout the region due to overfishing. BREEF is calling on the government to implement a fixed closed season for the Nassau Grouper in order to protect the species and the fishing industry. The closed season traditionally runs during the spawning season from December 1st until February 28th, to allow the fish to reproduce.  BREEF is calling urgently for the announcement of this year’s Nassau Grouper closed season….’ And so it came to pass… Not only is the Nassau grouper now worth 2 x 65c; it is strictly protected for 3 months during its breeding season. Maybe philately even had a hand in getting somewhere…

BREEF_Comemorative_stamps_PastedGraphic-3

Nassau Grouper (Rick Smit wiki)

Credits: Melinda Riger, Rick Smit, Open Source, BNT, BREEF, Wikimedia, Bahamas Postal Service

PHILATELY WILL GET YOU… NICE BAHAMAS WILDLIFE STAMPS


Parrot

WILDLIFE STAMPS OF THE BAHAMAS

with guest expert PHIL LATTERLY

The Bahamas ‘does’ extremely nice stamps, in particular ones featuring the rich and varied wildlife of the islands. The islands spread from the subtropical climates of the north, on a level with Florida, to the near-tropical islands of the south. This ensures plenty of scope for designing pretty sticky bits of paper to stick onto other bits of paper. One of the small pleasures in life, near-lost to the tyranny of the email…

The sets of wildlife stamps are issued by the Bahamas Post Office. I’ll add to this collection piecemeal (including some from my own modest collection). The very latest commemorative issue heads the display.

1. SEA CREATURES

BREEF 20th Anniversary Issue – November 2013IMG_2918

REEF FISHESBahamas Reef Fish StampsBahamas Bonefish Stamp (old-style)Bahamas Marine Life Stamps 2012

2. BIRDS

February 2012: WWF Flamingo Issue

Best seen on Inagua, the island where they breed. Less often found elsewhere, and sadly now only as occasional ‘vagrants’ on Abaco. Flamingo post with wonderful pictures of adults, babies and nests HEREBahamas Wildlife Stamps Flamingos

PARROT POST

Found mainly on Abaco (the resident underground nesting variety) and Inagua (conventional nesters), where they breed. Small groups are now found elsewhere, e.g. Nassau, where there is a local monitoring programme, but I’m not sure that there is evidence of breeding there. Any info welcome… One (of several) lavishly illustrated parrot posts HERE

 Impressive commemorative issues for the BAHAMAS NATIONAL TRUST

OTHER BIRD SPECIES

Bahamas Wildlife Stamp Osprey

The KIRTLAND’S WARBLER is one of the rarest birds of the Bahamas, a winter resident that breeds only in a small area of Michigan. The entire population is numbers only a few thousand birds. The number of sightings annually on Abaco is very small – fewer than a dozen, and in some years none at all. Increasing knowledge about their favourite haunts is now improving the recording rate. I know of two seen this year, on the same day… a birder’s lifetime achievement.

Bahamas Stamps Kirtland's Warbler (eBay)

This swallow is endemic to the Bahamas

Found on Abaco only as an occasional visitor.

stock-photo-a-bahamas-stamp-featuring-a-burrowing-owl-on-the-face-10479643 copy

WATERFOWL                Credit as shown

3. ANIMALS

Bahamas Wildlife Stamp Set

Bahamas Wildlife Stamps Sept 1984Bahamas Wildlife Stamp Set - Bat, Hutia, Raccoon, DolphinBahamas Potcake Stamps (First Day Cover)

4 BUTTERFLIES & INSECTSBahamas Butterfly Stamps

Credits: A compendious credit to sundry online sources including Bahamas PO, Bahamas Weekly, eBay and other sales / promotional sources, ads and the like, and unknown sources. I rarely find myself having to use this broad sweep approach: if your pic is here and you are upset, apologies, contact me to express your displeasure &co and I’ll take it down of course. But these are only non-rare small bits of paper; and this is a humble non-profit making info site of limited appeal in a Big Wide World. OK with that?