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"Hiriwa, a new calf, is warned by the pod of Maui's dolphins about the dangers of going near the dark shapes (fishing boats). Hiriwa heeds their warning until one day the bottom-set gillnet from a fishing trawler catches his friends. He does all he can to save them"--Publisher information. Includes factual information.
Our oceans are filled with fantastic creatures that need our help, and Popoto, the M?ui dolphin, is just one of them. Follow along as Popoto explores important issues such as overfishing, pollution, and how you can help save our oceans in this vibrant picture book. Created to celebrate the diversity of ocean life around us, Popoto's story and beautiful illustrations will inspire young environmentalists to take action.
The eighty-nine cetacean species that swim our seas and rivers are as diverse as they are intelligent and elusive, from the hundred-foot-long, two-hundred-ton blue whale to the lesser-known tucuxi, ginkgo-toothed beaked whale, and diminutive, critically endangered vaquita. The huge distances these highly migratory creatures cover and the depths they dive mean we catch only the merest glimpses of their lives as they break the surface of the water. But thanks to the marriage of science and technology, we are now beginning to understand their anatomy, complex social structures, extraordinary communication abilities, and behavioral patterns. In this beautifully illustrated guide, renowned marine mammalogist Annalisa Berta draws on the contributions of a pod of fellow whale biologists to present the most comprehensive, authoritative overview ever published of these remarkable aquatic mammals. Opening with an accessible rundown of cetacean biology—including the most recent science on feeding, mating, and communication—Whales, Dolphins, and Porpoises then presents species-specific natural history on a range of topics, from anatomy and diet to distribution and conservation status. Each entry also includes original drawings of the species and its key identifiers, such as fin shape and color, tooth shape, and characteristic markings as they would appear both above and below water—a feature unique to this book. Figures of myth and—as the debate over hunting rages on—figures of conflict since long before the days of Moby-Dick, whales, dolphins, and porpoises are also ecologically important and, in many cases, threatened. Written for general enthusiasts, emergent cetacean fans, and biologists alike, this stunning, urgently needed book will serve as the definitive guide for years to come.
DO YOU KNOW what New Zealand dolphin is black and white and grey all over, and only lives in the North Island of New Zealand?The Maui dolphin!Find out how and where these rare dolphins live, and what we need to do to save them from becoming extinct.
This engaging series examines some of today's most endangered species.
Describes different kinds of dolphins, including the bottlenose dolphin, Commerson's dolphin, and Chinese river dolphin, and discusses how they live and what can be done to save them from extinction.
A children's book with lots of illustrations, about a dolphin named Keala that lives in the ocean around Maui, Hawaii. Keala speaks with other creatures in the ocean and learns their special skills. The book uses both the English and Hawaiian names of them. Whenever Keala or any of the creatures speak, it is in rhyme. Keala has many adventures and the book teaches children important facts like: plastic and old fishing nets can harm sea life; that the navy sonar testing hurts whales and dolphins. All taught in a playful manner.
The critically endangered Maui's dolphin (Cephalorhynchus hectori maui) and the endangered Hector's dolphin (C. h. hectori) are endemic to the coastal waters of New Zealand, where their primary threat is fisheries-related mortality. The Maui's dolphin is among the most critically endangered cetaceans in the world, with its remnant population primarily concentrated in approximately 140 km along the central west coast of New Zealand's North Island. Its closely related sister subspecies, the Hector's dolphin, is more abundant and offers a useful comparison for studying the Maui's dolphin. My work used genetic tools to examine demographic and genetic parameters relevant for conservation considerations regarding Maui's and Hector's dolphins, as well as to build upon past genetic baselines for the purpose of long-term genetic monitoring of these subspecies. Three genetic datasets formed the basis for most analyses: (1) Maui's 01-07, including 54 Maui's dolphin individuals sampled between 2001 and 2007 (n = 70 biopsies, 12 beachcast); (2) Maui's 10-11, including 40 Maui's dolphin individuals sampled in 2010 and 2011 (n = 69 biopsies, 1 beachcast); and (3) Hector's CB11-12, including 148 Hector's dolphin individuals sampled in Cloudy Bay in 2011 and 2012 (n = 263 biopsies). Microsatellite genotypes were used to identify individuals for a genotype recapture abundance estimate of individuals age 1 (N1+) and for the estimation of effective population size (N[subscript e]). Both populations exhibited a high N[subscript e] relative to N1+, consistent with expectations given their life history characteristics and the limited data available for other dolphin species. The abundance of Maui's dolphins was confirmed to be very low, Maui's 10-11 N1+ = 55 (95% CL = 48 - 69), and as expected, it had much lower linkage disequilibrium N[subscript e] (61, 95% CL = 29 - 338) than Hector's CB11-12 (N[subscript e] = 207, 95% CL = 127 - 447; N1+ = 272, 95% CL = 236 - 323). The slightly higher Ne/N1+ ratio of the Maui's dolphin compared to the Hector's dolphin is consistent with a recent decline in the Maui's dolphin. Although the point estimates of both N[subscript e] and N1+ decreased between the two Maui's dolphin datasets (Maui's 01-07: N[subscript e] = 74, 95% CL = 37 - 318; N1+ = 69, 95% CL = 38 - 125), the confidence intervals widely overlapped. Maui's 10-11 had significantly fewer alleles (average 4 alleles/locus) and lower heterozygosity (H0 = 0.316, H[subscript e] = 0.319) than Hector's CB11-12 (average 7 alleles/locus, H0 = 0.500, H[subscript e] = 0.495; all P