Identification of causes of death of Baikal seal (Pusasibirica Gmelin, 1788)

Мельцов, И. В.; Tabakova, M.A.; Anikienko, I.; Sayvanova, Svetlana; Molkova, A.; Ilyina, O.; Pomoinitskaya, Tatyana

doi:10.3906/zoo-1905-18

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…The top predator of the Baikal food web—the Baikal seal ( Pusa sibirica Gmelin, 1788)—is also suffering from anthropogenic activities and pollution. The Baikal seal experienced a mass mortality event in the late 1990s and early 2000s due to emissions of sulfur components from the Baikal Pulp and Paper Mill (Ryadinskaya et al, 2020). In 2017 another mass death of seals occurred in Lake Baikal, however the reason of this event is still unclear and requires further investigation (Ryadinskaya et al, 2020).…”

Section: Current Environmental Concerns At Baikal and In Its Basinmentioning

confidence: 99%

Human impact and ecosystemic health at Lake Baikal

Brown

Gerber²,

Bedulina

et al. 2021

WIREs Water

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Lake Baikal in eastern Siberia is the deepest and (by volume) largest lake on Earth. Among the most ancient lakes, it is home to thousands of endemic species. Lake Baikal is well‐known for its water purity, especially its dominant deep‐water layers, which consist of pristine, drinking‐quality water and is inhabited by unique endemics with enormous biodiversity. But some coastal sites of this giant lake (mainly localized in isolated shallow bays and littoral zones close to settlements and industrial sites) are suffering from an environmental crisis that threatens the water's quality and the ecosystem it supports. As part of the global ecosystem, Lake Baikal is already facing significant impacts from global climate change, which, in turn, increase the risks and consequences of local anthropogenic effects. Although the lake is protected by federal law, human activities are nevertheless having a growing negative impact on its ecosystem. Political, economic, and social factors result in cascading natural consequences in water quality, coastal sustainability, pollution sinks, water level management, forest maintenance, fire control and biodiversity. While Lake Baikal is a UNESCO World Heritage Site, known and valued around the world, it remains vulnerable to worsening threats that must be addressed if humanity is to preserve this unique ecosystem and its endemic species into the future. This article is categorized under: Water and Life > Stresses and Pressures on Ecosystems Water and Life > Conservation, Management, and Awareness Science of Water > Water Quality Engineering Water > Planning Water

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Section: Current Environmental Concerns At Baikal and In Its Basinmentioning

confidence: 99%

Human impact and ecosystemic health at Lake Baikal

Brown

Gerber²,

Bedulina

et al. 2021

WIREs Water

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Anatomycal and histological structure of aortic valve in Baikal seal

Tarasevich

2021

E3S Web Conf.

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This article studies peculiarities of the anatomical and histological structure of the aortic valve cusps in Baikal seal in the age of 3-3.5 years. Topographically, the aortic valve takes a central position and is located between the atrioventricular valves, and cranial - pulmonary valve. Projectively, the aortic valve is placed above the level of the atrioventricular valves, but below the level of the pulmonary valve. The aortic ostium has marked sinuses, two coronary and one septal, forming the aortic bulb. The valve is shown by the septal right and left semilunar cusps. The septal cusp is caudally attached to the aortic ostium and the right and left have a cranial location. Aortic valve cusps have three layers of connective tissue: fibrosa (aortic) – with collagen fibers, ventriculosa (ventricular) - with elastic and spongiosa (intermediate) - a combination of both fibers, give strength to this structure. The thickness of the ventricular layer of the cusp is 2.4 times higher than the thickness of the aortic layer. At the places of the greatest thickness value, there are transverse resections (2 deep and 4 surface), which increase the contact surface and increase the pressure on the cusp. The thinning area, which is located before the bulging edge of the cusp, acts as a closure point for the aortic valve cusps.

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Topography of the superficial lymph nodes of the Baikal seal

Saivanova¹,

Ilyina²

2023

International Conference “Sustainable Development: Veterinary Medicine, Agriculture, Engineering and Ecology” (Vmaee2022)

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Identification of causes of death of Baikal seal (Pusasibirica Gmelin, 1788)

Cited by 4 publications

References 1 publication

Human impact and ecosystemic health at Lake Baikal

Human impact and ecosystemic health at Lake Baikal

Anatomycal and histological structure of aortic valve in Baikal seal

Topography of the superficial lymph nodes of the Baikal seal

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