Play Behavior by a Juvenile Humpback Whale (Megaptera novaeangliae) with an Inanimate Object (Driftwood) in the Gulf of Tribugá, Colombia

Humpback whales (Megaptera novaeangliae) are a cosmopolitan species that often visit inshore waters close to the coast, making it easier to see and study them. Consequently, this baleen whale has been researched the most, particularly in Colombia. In Aug 2020, ongoing cetacean monitoring was performed by a group of trained fishermen from the Gulf of Tribuga as part of a community science program implemented by the R&E Ocean Community Conservation Foundation as a contingency plan for monitoring marine mammals in the area during COVID-19 lockdown. As a result of these observations of play behavior, the scope of knowledge regarding the social dynamics, developmental processes, flexibility, and cognitive abilities of cetaceans has been expanded.

Hydroelectricity, Environmental Governance and Anti-Reflexivity: Lessons from Muskrat Falls

Hydroelectric projects are often pursued on the promise of economic development and environmental co-benefits as a source of low-carbon energy. We analyse the case of the Muskrat Falls hydropower mega-project (located in Labrador, Canada) to understand why this project failed to live up to its promised benefits, but instead delivered a double disaster of economic cost and environmental risk. The key concepts of anti-reflexivity and deep stories help us understand why the project assumed an aura of inevitability in political and public discourse until it was too late to change course. Drawing on publicly available data and secondary sources, we identify the constellation of social forces that maintained political anti-reflexivity about the economic and environmental risks of the project and led to a double economic and environmental disaster. Our analysis identifies vital lessons for countering anti-reflexivity and improving environmental governance related to energy mega-projects.

Sinking Mink: An Argument for Ending the Mink Industry in Nova Scotia

Some Canadian farms produce fox or chinchilla fur, but their numbers are dwarfed by the number of mink farms.2 In a similar vein, trapping is a fur-gathering practice that continues to exist in Canada to some extent, but it predominantly occurs in other areas of the country and is not discussed in this paper.3 Second, this paper does not explore the animal rights theory that it is inherently unethical for humans to use animals as resources. Enterprising farmers began to move with greater frequency into Canada's burgeoning fur farming sector.9 A group of mink farmers established themselves in Nova Scotia's Digby County during the 1930s.10 The availability of fish and eels made this a logical location to capture, breed, and raise the carnivorous and semi-aquatic mammals.11 The Nova Scotia Mink Breeders' Association formed in 1938,12 and its farmers reaped high profits as mink became the fur en vogue in the years following the Second World War.13 The Digby farmers followed in the footsteps of the Prince Edward Island ranchers who developed so many fox farming techniques. In practice, only one Canadian fur farmer has been convicted of violating this provision.20 The Code of Practice for the Care and Handling of Farmed Mink (the "Code") is a publication offering a detailed set of guidelines for the proper treatment of mink.21 However, animal law scholars have criticized this Code, along with others crafted by the National Farm Animal Care Council, for being of indeterminate legal force.22 These Codes are also flawed because they are written by farm operators rather than independent third parties.23 Nova Scotia has enacted more legislation that applies to fur farming than any other province. The Fur Industry Regulations focus on the adverse environmental impacts of mink farming.30 The Regulations address topics like feces and carcass disposal and soil tests.

Serosurvey of Selected Zoonotic Pathogens in Polar Bears (Ursus maritimus Phipps, 1774) in the Russian Arctic

Antibodies to several pathogens were detected in the serum samples of nine polar bears (Ursus maritimus, Phipps, 1774) from areas of the Russian Arctic. Plasma was studied for antibodies to sixteen infectious and parasitic diseases using indirect Protein-A ELISA. It is known that when using ELISA, the interaction of antibodies with a heterologous antigen is possible due to immunological crossings between antigens. We investigated the plasma for the presence of antibodies to the major pathogens and for the presence of antibodies to pathogens, for which the cross-immunological reactions to these pathogens are described. For example, antibodies to the pathogens of opisthorchiasis, clonorchiasis, and ascariasis were found simultaneously in four polar bears. Antibodies to both anisakidosis and trichinellosis pathogens were found in six animals. The data obtained may also indicate a joint invasion by these pathogens. Unfortunately, due to the small number of animals sampled, it is impossible to carry out statistical processing of the data.

Natural Barrier Feeding Technique in Megaptera novaeangliae in Central Coastal Area of Golfo San Jorge, Patagonia, Argentina

Humpback whales (Megaptera novaeangliae) are cosmopolitan and highly migratory animals. They are found in all ocean basins and annually migrate between low-latitude waters, where they breed and calve during the winter and spring, and high-latitude waters, where they feed during the summer and autumn. Commercial whaling resulted in a considerable reduction in all humpback whale populations. In the Southern Hemisphere alone, more than 200,000 whales were caught. Most populations, including the Western South Atlantic Ocean Breeding Stock "A" (BSA), have shown signs of recovery after the International Whaling Commission (IWC) enacted a moratorium in the late 1960s.