Do bigger bodies require bigger radiators? Insights into thermal ecology from closely related marine mammal species and implications for ecogeographic rules

2020 ◽  
Vol 47 (5) ◽  
pp. 1193-1206
Author(s):  
Stephanie K. Adamczak ◽  
D. Ann Pabst ◽  
William A. McLellan ◽  
Lesley H. Thorne
2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Yu Shiu ◽  
K. J. Palmer ◽  
Marie A. Roch ◽  
Erica Fleishman ◽  
Xiaobai Liu ◽  
...  

2014 ◽  
Vol 48 (5) ◽  
pp. 40-51 ◽  
Author(s):  
Mark F. Baumgartner ◽  
Kathleen M. Stafford ◽  
Peter Winsor ◽  
Hank Statscewich ◽  
David M. Fratantoni

AbstractPersistently poor weather in the Arctic makes traditional marine mammal research from aircraft and ships difficult, yet collecting information on marine mammal distribution and habitat utilization is vital for understanding the impact of climate change on Arctic ecosystems. Moreover, as industrial use of the Arctic increases with the expansion of the open-water summer season, there is an urgent need to monitor the effects of noise from oil and gas exploration and commercial shipping on marine mammals. During September 2013, we deployed a single Slocum glider equipped with a digital acoustic monitoring (DMON) instrument to record and process in situ low-frequency (<5 kHz) audio to characterize marine mammal occurrence and habitat as well as ambient noise in the Chukchi Sea off the northwest coast of Alaska, USA. The DMON was programmed with the low-frequency detection and classification system (LFDCS) to autonomously detect and classify sounds of a variety of Arctic and sub-Arctic marine mammal species. The DMON/LFDCS reported regularly in near real time via Iridium satellite detailed detection data, summary classification information, and spectra of background noise. The spatial distributions of bowhead whale, bearded seal, and walrus call rates were correlated with surface salinity measured by the glider. Bowhead whale and walrus call rates were strongly associated with a warm and salty water mass of Bering Sea origin. With a passive acoustic capability that allows both archival recording and near real-time reporting, we envision ocean gliders will become a standard tool for marine mammal and ocean noise research and monitoring in the Arctic.


2018 ◽  
Vol 28 ◽  
pp. 133-141 ◽  
Author(s):  
Wendy K Jo ◽  
Albert DME Osterhaus ◽  
Martin Ludlow
Keyword(s):  

PLoS ONE ◽  
2012 ◽  
Vol 7 (9) ◽  
pp. e43130 ◽  
Author(s):  
Tero Harkonen ◽  
Karin C. Harding ◽  
Susan Wilson ◽  
Mirgaliy Baimukanov ◽  
Lilia Dmitrieva ◽  
...  

2012 ◽  
Vol 5 (1) ◽  
pp. 93-96 ◽  
Author(s):  
Simona Sanvito ◽  
Alejandro Dueñes Meza ◽  
Yolanda Schramm ◽  
Pedro Cruz Hernández ◽  
Yareli Esquer Garrigos ◽  
...  

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11689
Author(s):  
Wannapimol Kriangwanich ◽  
Kittisak Buddhachat ◽  
Anocha Poommouang ◽  
Siriwadee Chomdej ◽  
Chatchote Thitaram ◽  
...  

Currently, species identification of stranded marine mammals mostly relies on morphological features, which has inherent challenges. The use of genetic information for marine mammal species identification remains limited, therefore, new approaches that can contribute to a better monitoring of stranded species are needed. In that context, the ISSR-HRM method we have proposed offers a new approach for marine mammal species identification. Consequently, new approaches need to be developed to identify individuals at the species level. Eight primers of the ISSR markers were chosen for HRM analysis resulting in ranges of accuracy of 56.78–75.50% and 52.14–75.93% in terms of precision, while a degree of sensitivity of more than 80% was recorded when each single primer was used. The ISSR-HRM primer combinations revealed a success rate of 100% in terms of discrimination for all marine mammals included in this study. Furthermore, ISSR-HRM analysis was successfully employed in determining marine mammal discrimination among varying marine mammal species. Thus, ISSR-HRM analysis could serve as an effective alternative tool in the species identification process. This option would offer researchers a heightened level of convenience in terms of its performance and success rate. It would also offer field practice to veterinarians, biologists and other field-related people a greater degree of ease with which they could interpret results when effectively classifying stranded marine mammals. However, further studies with more samples and with a broader geographical scope will be required involving distinct populations to account for the high degree of intraspecific variability in cetaceans and to demonstrate the range of applications of this approach.


Author(s):  
Manuel Eduardo de la Paz ◽  
Jacob Nathaniel Luther ◽  
Stiffy Marie Espinosa ◽  
Bea Chiara Festin ◽  
Rubena Marie Santillan ◽  
...  

The Negros Occidental Coastal Wetlands Conservation Area (NOCWCA) is the Philippines’ 7th Ramsar Site of Wetlands of International Importance. It spans 89,607 ha comprising the municipal waters of 10 adjacent towns and municipalities. Its waters are part of the Guimaras Strait in the north and the Panay Gulf in the south. This research aimed to assess marine mammal diversity in these coastal wetlands. Marine mammal species here were documented through strandings, interview surveys, and boat surveys. Ten species of marine mammals, including the dugong (Dugong dugon), have stranded in the NOCWCA for the past ten years. Three species were encountered in the boat surveys: Indo-Pacific bottlenose dolphin (Tursiops aduncus), Long-snouted spinner dolphin (Stenella longirostris longirostris), and Irrawaddy dolphin (Orcaella brevirostris). All species were encountered in close proximity to fishing boats, indicating possible interactions. The presence of these marine mammals here highlights the importance of these areas as essential habitats.


2020 ◽  
Author(s):  
Sabateeshan Mathavarajah ◽  
Amina K. Stoddart ◽  
Graham A. Gagnon ◽  
Graham Dellaire

AbstractWe are in unprecedented times with the ongoing COVID-19 pandemic. The pandemic has impacted public health, the economy and our society on a global scale. In addition, the impacts of COVID-19 permeate into our environment and wildlife as well. Here, we discuss the essential role of wastewater treatment and management during these times. A consequence of poor wastewater management is the discharge of untreated wastewater carrying infectious SARS-CoV-2 into natural water systems that are home to marine mammals. Here, we predict the susceptibility of marine mammal species using a modelling approach. We identified that many species of whale, dolphin and seal, as well as otters, are predicted to be highly susceptible to infection by the SARS-CoV-2 virus. In addition, geo-mapping highlights how current wastewater management in Alaska may lead to susceptible marine mammal populations being exposed to the virus. Localities such as Cold Bay, Naknek, Dillingham and Palmer may require additional treatment of their wastewater to prevent virus spillover through sewage. Since over half of these susceptibility species are already at risk worldwide, the release of the virus via untreated wastewater could have devastating consequences for their already declining populations. For these reasons, we discuss approaches that can be taken by the public, policymakers and wastewater treatment facilities to reduce the risk of virus spillover in our natural water systems. Thus, we indicate the potential for reverse zoonotic transmission of COVID-19 and its impact on marine wildlife; impacts that can be mitigated with appropriate action to prevent further damage to these vulnerable populations.


2021 ◽  
Vol 348 ◽  
pp. 129136
Author(s):  
Haixia Huan ◽  
Ke Zhang ◽  
Jian He ◽  
Jinyou Zhang

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