Sunday, December 6, 2015

Saving the Karner Blue Butterfly

Karner Blue Butterfly

(Lycaeides melissa samuelis) 


By: Daniela Freccero


What is the Karner Blue Butterfly?
This is a small butterfly with a rounded wingspan of about 2.5 cm. On the ventral side of their wings, they are a grayish fawn color and have a strip of orange crescents and black spots surrounded by white on both wings. Males have a silvery or dark blue topside with narrow black margins and continuous bands of orange spots along the edges of both wings. On the outer side, females are grayish brown with a blue topside and orange crescents inside the narrow back border. It has 4 stages in its life cycle: the egg, the larva (caterpillar), the pupa (chrysalis), and the adult (butterfly). Every year, there are two generations. In the first one, adults arrive in May to mid-June. Females lay eggs that hatch in 7-8 days, but only 40-50% of the eggs survive to the adult stage. The second generation emerges in mid-July to early August and lay their eggs that hatch the next May.Adults are nectar-feeders, so they encourage the pollination of a variety of wildflowers including rock cress, raspberry, goldenrod, and butterflyweed. The highly specialized larvae only feed on the wild blue lupine leaves. The Karner Blue butterfly depends on blue lupine for its survival. 
                                     Where are they found?
This butterfly is mainly found in dry sandy areas with open woods and clearings including lakeshore dunes, pine barrens, and sandy pine prariers that hold a lot of wild blue lupine. In the past, it was continuously found in many different places but is now mostly found in Wisconsin, but can be found in parts of Indiana, Michigan, New Hampshire, New York, Ohio, and Illinois.

                                                       What happened to them?

Over the last 100 years, this species had declined by 99% and was federally listed as an endangered species in 1992. This species has two main threats: habitat loss and collection. Due to land development and a lack of natural disturbance (ex. wildfire and grazing by large animals), the habitat throughout the range of these butterflies has been destroyed. This disturbance helps maintain the butterfly’s habitat because it encourages lupine plant growth, which these butterflies depend on. The other threat is due to this butterfly’s rare beauty which makes it very desirable for people who have butterfly collections. Although, these collections are illegal without a permit from the U.S. Fish and Wildlife Service because the population is so low which can negatively affect the entire butterfly population. 

Road to Recovery
During the last decade, conservation groups in New Hampshire and Ohio have been reintroducing captive-bred butterfly populations and have been successfully breeding them into the wild. In 2003, the Federal Karner Blue Butterfly Recovery Plan was introduced which outlines a plan to restore the species over a 20 year period:
Recovery Tasks:
1. Protect and manage the Karner blue butterfly and its habitat to maintain metapopulations of these butterflies.
2. Evaluate and implement translocation where appropriate.
3. Develop wide-range and regional management guidelines.
4. Develop and implement information and education program.
5. Collect important ecological data on the Karner blue and associated habitats.

6. Review and track recovery progress.

A collaboration of the efforts of DEC, NY's Office of Parks, Recreation and Historic Preservation, The Nature Conservancy, and the Albany Pine Bush Commission as well as the help of local towns and counties, and the cooperation of private landowners is the biggest hope for the recovery of this unique species. 


Want to Help?
Although scientists and others have been working very hard to find ways to save the Karner Blue Butterfly, it is a very difficult and long process. We can try to help and possibly help save other species of butterflies by:

Learn- It is important to learn more about this species and other endangered species, especially about the destruction of their habitats. Then, spread the news!
Volunteer- You can volunteer at a nearby zoo, nature center, or National Wildlife Refuge
Join- Join a conservation group
Plant- You can plant a garden with many flowers and plants that attract butterflies 

To learn how to plant a butterfly garden, visit: http://www.nhptv.org/wild/karnerbutterflygarden.asp


Click here to listen to Cathy Carnes, a field biologist who has helped recover Karner blue butterflies since 1992: 

Works Cited








Saturday, December 5, 2015

The Jaguar's Fight for Survival


Panthera onca


By Ben Haggblade

The jaguar is the third largest cat in the world, weighing in at anywhere between 150 and 200 pounds with only the lion and the tiger bigger. In Meso American culture (primarily Mayan, Incan and Aztec) jaguars were worshipped as gods of the Underworld and had temples built for them, most notably the Temple of the Jaguar in Chichen Itza.       

 





Temple of the Jaguar in Chichen Itza. Link: http://www.crystalinks.com/pyramidmesoamerica.html


However, in today’s world, jaguars have been listed as near threatened since 1997 and their numbers decrease each year (USFWS 25). Jaguars are the only big cats that exclusively appear in the New World, but with their dwindling numbers they are primarily located in South and Central American rainforests with only one living wild Jaguar seen in the United States as of 2012.

 Jaguar’s are the only cat exclusively in the New World. Link: http://www.defenders.org/jaguar/basic-facts

Jaguars usually have litters averaging two cubs and they stay with their mother for the first year of their lives. In the wild, jaguars can live around 10-15 years, however some individuals have been known to live longer. Jaguars live and hunt in solidarity, only interacting with others during the mating season. They usually hunt at night because of their excellent night vision and use the trees and shrubbery to ambush their prey, killing it with one strong bite. This is originally how they got their name, as Meso Americans called them “yaguars” meaning “he who kills in one leap.” They have been known to prey upon around 85 species including: peccaries, capybaras and pacas and are also not afraid to go through water to capture their prey as they are very good swimmers.

 




Jaguar swimming to hunt a crocodile. Link: http://www.viroole.com/jaguar-vs-crocodile/

          
Jaguars were listed as near threatened in 1997, and continue to struggle to become de-listed. There are a few factors that are contributing to the decline in jaguar populations. Firstly, people clear forests in order to expand cities and agriculture, which destroys the jaguar’s habitat (which is very large due to large spatial needs) and cutting off access to the resources it once had available.

Jaguar’s habitats are in danger due to human activities. Link: http://www.worldwildlife.org/species/jaguar

Even though commercial hunting of jaguars is banned, poachers still go out and hunt for the jaguar's fur because of the lack of enforcement on these anti-poaching laws (USFWS 28). The punishment for poaching is a 500,000 dollar fine or 3 years in prison, but this is never enforced (USFWS 28). It is estimated around 15,000 total jaguars are left in the South and Central American rainforests, down from 300,000 in 1960. No disease has been documented to significantly impact jaguars yet, however CDV (Canine Distemper Virus) has been known to negatively affect some jaguars in the wild (USFWS 7). Lastly, the hunting by humans of big game prey that jaguars typically hunt is causing problems. Over hunting of these prey animals is depriving jaguars of their food which hurts their survival rates, especially when mothers are hunting not just for themselves, but for their cubs as well. This is also important because of how slowly jaguars reproduce. As I mentioned above, jaguars average 2 cubs per litter and as a k-selected species, the mothers put a lot of time and care into raising their young, and if they can’t feed their cubs, they suffer and struggle to survive.
            The U.S. Fish and Wildlife service began developing a recovery plan in 2012 and has a few measures in place. First, reduce and strengthen the enforcement against poachers in the wild. Nayarit and other Mexican states are working with local law enforcement in order to help jaguar conservation and prevent poaching (USFWS 28). Second, research and assess the affects that habitat degradation is having on jaguar populations. Lastly, research more about how roads and other man made obstacles affect jaguar movements. But what can we do as ordinary citizens to help protect jaguars in the wild? The Defenders of Wildlife have a program where you can adopt a jaguar to fund their organization. Visit this link for more info! https://secure.defenders.org/site/SPageServer?pagename=wagc_jaguar&s_src=3WEW1600XXXXX&s_subsrc=111315_adopt_body_jaguar/how-you-can-help


References:
Bruno, Natasha, Emily Hauck. "Exploring the Population Dynamics of the Endangered top level Carnivore." Weebly. Weebly.com. n.d. Web. 2 Dec. 2015.
"Jaguar." National Geographic. Nationalgeographic.org. n.d. Web. 24 Nov. 2015. 
"Jaguar Fact Sheet." Defenders of Wildlife. Defenders.org. n.d. Web. 18 Nov. 2015. 
"Jaguar Symbolism." Pure Spirit. Pure-spirit.com. n.d. Web. 18 Nov. 2015. 
"Recovery Outline for the Jaguar (Panthera onca)." United States Fish and Wildlife Service. U.S. Fish and Wildlife Service. Apr. 2012. Web. 18 Nov. 2015.