Australia’s Giant Cuttlefish in Trouble as Weak Spawning Season Continues

Australian giant cuttlefish may be in trouble, as evidenced by low summer spawning numbers (flickr| richard ling)

This summer, numbers are way down.

Australia’s ABC Radio recently interviewed a local commercial fisherman who reported that he has only seen four this year—rather than the usual “hundreds of thousands.” Other news outlets have been picking it up too.

Researchers say the low numbers are cause for concern, and they don’t yet know what’s causing the trend (though “BHP Billiton’s proposed desalination plant” nearby probably won’t help. It would reportedly pour “huge quantities of hypersaline wastewater” into Spencer Gulf and make the area unpalatable for a variety of species). A new study finds that the cuttlefish breeding colony had decreased by 78% in the past decade, and last year marked a record low.

Plan to Exonerate Hawaiian Monk Seals Relies on Reality-TV-style Cameras

Hawaiian Monk Seal photo by: U. S. Fish and WIldlife Service

The image rehabilitation plan comes as local fishermen ramp up  claims that the seals have been depleting area fish stocks. Recent cases of people pestering—and in some cases killing—the seals have come partly as a reaction to these rumors, and spurred scientists to “glue submersible cameras onto the seals’ backs, using the footage to prove to fishermen the animals are not harming their way of life.”

You can find out more about habitat threats to monk seals or read Les Welsh’s blog post from April about people intentionally killing the seals in the waters around Kaua’i (and how you can help).

Video: Blue Shark Chomps Giant Squid

Giant squid are mysterious, awesome and locked in an eternal arms race with sperm whales. Live sightings are so rare that even footage of a recently dead Architeuthis is a pretty big deal. Recently, Australian angler and journalist Al McGlashan came across a largely-intact carcass whose bright red coloration indicated it had died recently. While he filmed, a blue shark tore into the squid, thus launching  the best cephalopod viral phenomenon of 2012 (so far…I eagerly await your videos of octopuses singing ‘Call Me, Maybe’). Take a look at Field & Stream’s exclusive full-length video and photos right this second.

Click here to view the embedded video.

Canadian Lobster is Blue, Yet in Decent Spirits

Canadian lobster boat captain Bobby Stoddard caught a lobster in early May that resembled a giant Avatar cat person. That’s the way we say ‘it was blue’ in America now.

Blue lobsters do occur, but they’re uncommon. According to The University of Maine’s Lobster Institute, “only an estimated one in two million lobsters is blue” (which makes them rare, but not quite as rare as live, naturally red or yellow lobsters, which are estimated at one in ten million and one in 30 million, respectively). Blue lobsters come about due to “a genetic defect that causes the lobster to produce an excessive amount of a particular protein.”

You can learn more about invertebrates in our Wildlife Library.

Manta Ray Ultrasound Sheds Light on Liquid Oxygen Intake

A study recently published in Biology Letters is the first to show how manta ray embryos get oxygen, based on video from an ultrasound performed on a pregnant ray in 2008.

Though manta rays, like many other cartilaginous fish, give birth to live young, they lack an oxygen-giving umbilical cord or placenta. According to researchers, “the baby ray was raising and lowering its jaw, pumping uterine fluid in through its mouth and spiracle.” The continuous regulated flow of the fluid over the ray’s gills allowed the embryo to extract oxygen (the baby was “a healthy female, 2 meters from wingtip to wingtip and weighing 50 kilograms” at birth). According to Taketeru Tomita, a fish biologist at Hokkaido University Museum, this is the first time that scientists have observed fetal viviparious vertebrates pumping liquid to extract oxygen.

Great Whites Summering in Cape Cod

Researchers tag a shark near Chatham, MA, in 2009. Tagged great whites recently returned to Cape Cod to feed on seals. (flickr | Massachusetts Energy and Environmental Affairs)

Researchers say the sharks were drawn to the area by “a growing seal population on Monomoy Island,” redoubt of migrating birds and other non-humans for hundreds of years. They haven’t come close enough to tourist beaches to warrant any official warning, though mayhem will presumably occur if the star-crossed Brody family gets too close.

For more on ocean creatures, see Kevin Coyle’s post from last year about animals’ various methods of swimming or my post about the Top 5 Real Sea Serpents (including the giant squid). You can also check out an article about sperm whales and the threat posed to them after the oil spill in the Gulf  of Mexico.

If you’ve seen a story that you think should be covered in the next Ocean Wildlife Roundup, please let me know in the comments below, email me at greenbergm@nwf.org, or tell me on Twitter @MaxTGreenberg.

The Pilgrims’ first thanksgiving celebration (which lasted three days) probably took place in mid October 1621, after an unexpectedly bountiful harvest. The newcomers invited local Indians—who had given them a lot of useful advice on farming—to join them. According to various sources, the Pilgrims enjoyed a wide range of wild animal foods collected from forest, meadow and sea. Those species continued as staple foods in America for at least another 250 years. But how do the creatures on which the Pilgrims dined fare today?

A wild turkey almost glows with bronze iridescence in this photo by Sonya L. Shaw.

Let’s take a look at eight types of wild creatures the Pilgrims ate:

Turkey

A large bird of woods and plain, the turkey was common across much of the area we know today as the United States. The Pilgrims and their Indian allies probably had access to roosts where dozens, even scores, of turkeys bunched up at night. Easy prey for arrow or bullet. Too easy, because within the next 300 years the turkey was nearly wiped out across much of the United States. Massive efforts were undertaken in the 1930s and onward to restore wild turkey populations, which today are common in most states and legal to hunt in season.

Heath Hen

This grouse was so common in the Plymouth area that the birds in later years became a staple diet for servants, being easy to get and cheap. Given that the birds flocked in open areas—scrubby heath barrens—they almost certainly were the species sometimes called partridges in accounts of the Pilgrim celebration. Heavily hunted throughout the colonial period and in the 19th century, and subject to habitat loss, the bird was extinct on the mainland by no later than 1870. The last of them disappeared on Martha’s Vineyard in 1932.

Waterfowl

Ducks, geese and swans were all on the Pilgrims’ table. The birds suffered greatly during the uncontrolled market-hunting years of the 1800s. One species, the Labrador duck, became extinct in the mid 1870s, probably because of egg collecting (it wasn’t favored for its unpalatable meat) and loss of the clam beds in which it found winter food. Drought in the early 1900s hurt waterfowl across the nation. But conservationists in the 1930s set to work helping the birds recover, often with the leadership of J.N. “Ding” Darling, the founder of the National Wildlife Federation. Today, waterfowl populations are carefully managed and hunting is controlled. Waterfowl numbers still have ups and downs, but they are unlikely to join the heath hen in oblivion.

Bald Eagle

Yes, the Pilgrims apparently served eagle during the celebration. In the mid 1900s, the use of pesticides nearly put the bald eagle and many of its relatives, from peregrines to condors, out of business. In the Lower 48 States, fewer than 500 bald eagle pairs survived in 1960. Now, almost 10,000 pairs live in the Lower 48, thanks to regulation of DDT and other pesticides, as well as a ban that NWF helped initiate on lead shot, which poisoned the birds when they scavenged waterfowl shot and lost by hunters.

Lobsters

Lobster populations as a rule remain safe, and the animals are still common on American dinner plates. These crustaceans are carefully managed by both state and federal agencies, and restrictions are based on increasingly refined data.

Atlantic Cod

Caught off New England, the fish that was so common and commercially important that it gave its name to a Massachusetts cape has not done so well. In the 1990s, the catch of cod was sinking fast because of overharvest by the fishing industry. Today, federal regulations are helping to restore the battered cod populations, though numbers are still down. However, catch data suggest that improvements are on the way, though the species still suffers the effects of overfishing.

Eel

These slippery, slender fish were once common in New England rivers, where they matured before returning to the Sargasso Sea in the middle of the Atlantic, a warm-water area where eels breed and hatch. Overfishing and damming of streams has greatly reduced eel populations in the Northeast. In 2007, the U.S. Fish and Wildlife Service turned down a petition to protect eels under the Endangered Species Act.

White-Tailed Deer

Venison was also on the 1621 menu. In the 1800s, deer in many states were nearly wiped out by uncontrolled hunting for meat and hides and by loss of habitat as forests were cut. But in the 1900s, wildlife managers began developing more scientific methods for monitoring and managing deer, which began to rebound as forests grew back. Today, deer may be as populous as they were in 1621.

Bonus Species

It’s not a meat species, being a tree, but let’s look at one last item on the Pilgrims’ plates—chestnuts. When the first colonists arrived in North America, the American chestnut tree ranged across New England and much of the region east of the Mississippi, with the exception of most of Ohio, Indiana and Illinois and the southeastern coastal states.

About 25 percent of all trees in the Appalachia Mountains were American Chestnuts, which grew up to 150 feet tall. They provided food for myriad animals as well as for humans. In 1904, chestnut trees in what is now the Bronx Zoo began dying. The cause: a bark fungus inadvertently bought into the United States on Asian chestnut trees.

The Asian trees could withstand the fungus, but the American trees could not. Perhaps 3 billion American chestnut trees died as a result. Today, probably fewer than 100 large chestnut trees survive in the species’ original range. Trees still sprout from old root systems, but these trees rarely grow more than 20 feet tall before the bark fungus kills them. Efforts are under way to recover the species and return it to its former range.

Do you want to help conserve wildlife and wild places? NWF has just launched a new online feature called “Choose Your Cause.” Just click on the cause you care about most  and enjoy inspiring stories and photos from folks on-the-ground who are working tirelessly to protect the wildlife and wild places we all love.