Top 9 sperm whale population are at risk due to hunting in 2023
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1. Sperm Whale
Author: www.fisheries.noaa.gov
Date Submitted: 11/29/2020 03:35 AM
Average star voting: 4 ⭐ ( 33135 reviews)
Summary: Learn more about sperm whales and what NOAA Fisheries is doing to best conserve the species.
Match with the search results: . The sperm whale is listed as endangered under the Endangered Species Act and depleted under the Marine Mammal Protection Act….. read more
2. Sperm Whale Species Profile, Alaska Department of Fish and Game
Author: www.adfg.alaska.gov
Date Submitted: 02/25/2019 04:54 AM
Average star voting: 4 ⭐ ( 27407 reviews)
Summary: sperm whale printer friendly page.
Match with the search results: The population in Alaskan waters is unknown. The sperm whale is listed as endangered under the Endangered Species Act and depleted under the Marine Mammal ……. read more
3. Sperm Whale | National Wildlife Federation
Author: www.adfg.alaska.gov
Date Submitted: 01/22/2019 08:52 AM
Average star voting: 5 ⭐ ( 35756 reviews)
Summary: Learn facts about the sperm whale’s habitat, diet, life history, and more.
Match with the search results: The sperm whale population was decimated by commercial whaling in the 1800s and early 1900s. It was listed as endangered under the Endangered Species ……. read more
4. Current global population size, post-whaling trend and historical trajectory of sperm whales | Scientific Reports
Author: www.nwf.org
Date Submitted: 08/01/2022 01:05 AM
Average star voting: 3 ⭐ ( 65491 reviews)
Summary: The sperm whale lives in most deep ice-free waters of the globe. It was targeted during two periods of whaling peaking in the 1840’s and 1960’s. Using a habitat suitability model, we extrapolated estimates of abundance from visual and acoustic surveys to give a global estimate of 736,053 sperm whales (CV = 0.218) in 1993. Estimates of trends in the post-whaling era suggest that: whaling, by affecting the sex ratio and/or the social cohesion of females, reduced recovery rates well after whaling ceased; preferentially-targeted adult males show the best evidence of recovery, presumably due to recruitment from breeding populations; several decades post-whaling, sperm whale populations not facing much human impact are recovering slowly, but populations may be declining in areas with substantial anthropogenic footprint. A theta-logistic population model enhanced to simulate spatial structure and the non-removal impacts of whaling indicated a pre-whaling population of 1,949,698 (CV = 0.178) in 1710 being reduced by whaling, and then then recovering a little to about 844,761 (CV = 0.209) in 2022. There is much uncertainty about these numbers and trends. A larger population estimate than produced by a similar analysis in 2002 is principally due to a better assessment of ascertainment bias.
Match with the search results: Prior to whaling, sperm whales may have numbered 1.1 million worldwide, according to the American Cetacean Society. Today the number is perhaps 300,000. The ……. read more
5. Sperm whales: The biggest toothed predator
Author: www.nature.com
Date Submitted: 07/04/2020 10:00 AM
Average star voting: 5 ⭐ ( 32187 reviews)
Summary: Sperm whales are the largest toothed whales, with enormous square-shaped heads and the biggest brains of any animal on Earth.
Match with the search results: The hunting of sperm whales was economically significant and global in … from a depleted population due to density-dependent effects, ……. read more
6. Types of Whales | Whale Populations – New Bedford Whaling National Historical Park (U.S. National Park Service)
Author: en.wikipedia.org
Date Submitted: 09/23/2022 09:48 PM
Average star voting: 4 ⭐ ( 94935 reviews)
Summary:
Match with the search results: Historically, whaling took a heavy toll on sperm whale populations. Prior to the early 18th century, sperm whales were hunted in Japan and Indonesia. Legend has ……. read more
7. Sperm whale
Author: www.livescience.com
Date Submitted: 05/09/2022 04:24 PM
Average star voting: 5 ⭐ ( 32322 reviews)
Summary:
Match with the search results: Whale hunting is now banned in most countries, and the commercial trade has largely ceased. However, the sperm whale population has yet to ……. read more
8. Sperm Whale | Whale Watching Handbook
Author: share.shub.edu.vn
Date Submitted: 03/26/2021 03:28 AM
Average star voting: 5 ⭐ ( 17448 reviews)
Summary: Sperm whales are the largest toothed cetacean. The size of most large baleen whales, they actually have teeth on their bottom jaw
Match with the search results: Sperm whale population are at risk due to hunting. in extinction in danger on the decrease in fewness….. read more
9. Sperm Whale | The Marine Mammal Center
Author: share.shub.edu.vn
Date Submitted: 10/13/2019 05:03 PM
Average star voting: 3 ⭐ ( 95905 reviews)
Summary: Learn about the habitat, population status and behavior of sperm whales.
Match with the search results: Sperm whale population is at risk due to hunting. in extinction in danger on the decrease in fewness….. read more
