Distribution and abundance of the Amami rabbit Pentalagus furnessi in the Amami and Tokuno Islands, Japan

Sugimura, Ken; Sato, Shigeho; Yamada, Fumio; Abe, Shintaro; Hirakawa, Hirofumi; Handa, Yukari

doi:10.1017/s0030605300031197

Cited by 15 publications

(9 citation statements)

References 9 publications

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“…Much of matrix modeling in population ecology is devoted to determining the growth rate of a population under various conditions (see Caswell 2001). In conservation biology, much attention is devoted to estimating trends, in which a decline would indicate a population that might require human intervention to avoid entering a threatened or endangered status (Brindley et al 1998, Sugimura et al 2000. In some cases of harvest management, regulations are based largely on estimates of population change over time (e.g., Dolton et al 2001, Kelley 2001.…”

Section: Introductionmentioning

confidence: 99%

How Should Detection Probability Be Incorporated into Estimates of Relative Abundance?

MacKenzie¹,

Kendall²

2002

Ecology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Ecological Society of America is collaborating with JSTOR to digitize, preserve and extend access to Ecology. Abstract. Determination of the relative abundance of two populations, separated by time or space, is of interest in many ecological situations. We focus on two estimators of relative abundance, which assume that the probability that an individual is detected at least once in the survey is either equal or unequal for the two populations. We present three methods for incorporating the collected information into our inference. The first method, proposed previously, is a traditional hypothesis test for evidence that detection probabilities are unequal. However, we feel that, a priori, it is more likely that detection probabilities are actually different; hence, the burden of proof should be shifted, requiring evidence that detection probabilities are practically equivalent. The second method we present, equivalence testing, is one approach to doing so. Third, we suggest that model averaging could be used by combining the two estimators according to derived model weights. These differing approaches are applied to a mark-recapture experiment on Nuttall's cottontail rabbit (Sylvilagus nuttallii) conducted in central Oregon during 1974 and 1975, which has been previously analyzed by other authors.

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Section: Introductionmentioning

confidence: 99%

How Should Detection Probability Be Incorporated into Estimates of Relative Abundance?

MacKenzie¹,

Kendall²

2002

Ecology

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“…Phylogenetic information will be useful for the conservation of these taxa, especially for P. furnessi, which is categorized as endangered (IUCN, 2000). The status of this species is very serious; its habitat has undergone considerable fragmentation and the size of the population has greatly declined (2700-6500 rabbits in 1995, Sugimura et al, 2000;Yamada et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogeny of Japanese Leporidae, the Amami rabbit Pentalagus furnessi, the Japanese hare Lepus brachyurus, and the mountain hare Lepus timidus, inferred from mitochondrial DNA sequences.

2002

Self Cite

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We determined mitochondrial 12S ribosomal RNA (rRNA) and cytochrome b (cyt b ) gene sequences in three leporid species of Japan, the Amami rabbit Pentalagus furnessi from the Ryukyu Islands, the Japanese hare Lepus brachyurus from Honshu, and a Japanese form of the mountain hare Lepus timidus ainu from Hokkaido. We compared the sequences with those of other taxa of leporids available in databases. Phylogenetic trees of the 12S rRNA gene sequences indicated that the lineage of P. furnessi diversified during the generic radiation of the leporids at an ancient time, which was estimated to have been the middle Miocene. Cyt-b gene trees revealed that the lineage of L. brachyurus branched off at an early stage in the speciation of Lepus , probably at the beginning of the Pliocene. The cyt b sequences of L. t. ainu were somewhat distinct from those of continental conspecific populations; this lineage divergence is likely to have occurred during the middle or late Pleistocene. The results show that the three regions of the Japanese archipelago, Ryukyu, Honshu-Shikoku-Kyushu, and Hokkaido, now preserve their own leporid taxa, each with a different extent of genetic endemicity. It is possible that the zoogeographic traits of the Japanese leporids are a consequence of the evolutionary dynamics of leporids in East Asia, in that the radiation centers of leporids are likely to have shifted from tropical, through temperate, to arctic zones.

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“…Eleven endemic mammal species including those in families Soricidae, Hipposideridae, Vespertilionidae, and Leporidae (Yamada ) and a subspecies of wild boar ( Sus scrofa ) live on Tokunoshima Island as relict species from the Eurasian Continent. The Amami rabbit is the only rabbit species and one of the relict species endemic to the Ryukyu archipelago and lives only on Tokunoshima Island and Amami Ohshima Island, Japan (Sugimura et al ). The Amami rabbit mainly lives in forested areas and is thought to have low mobility because of its small home range (1.3 ha for males and 1.2 ha for females; Yamada et al ).…”

Section: Study Areamentioning

confidence: 99%

Historical and recent impacts on genetic structure of an island rabbit

Ando

Tsuda²,

Kaneko

et al. 2018

J Wildl Manag

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Population fragmentation can reduce genetic diversity and increase the extinction risk of island endemic mammals, especially those with low dispersal ability. However, the intra‐island genetic structure and demographic history of mammals have not yet been well evaluated, especially on small geographic scales. We performed a genetic analysis of isolated island populations of the Amami rabbit (Pentalagus furnessi) on Tokunoshima Island using mitochondrial D‐loop region sequences and 8 nuclear microsatellite markers. Using data from fecal samples, we detected 2 genetic groups that corresponded with the northern and southern forested areas of the island based on the mitochondrial and nuclear genomes. We detected some admixture between the 2 groups in the nuclear genomes but did not detect gene flow between the 2 groups in the mitochondrial genomes. Although genetic diversity was higher in the southern population than in the northern population, the fixation index showed higher levels of inbreeding in the southern area with a signal of a recent bottleneck. We inferred the divergence time between the northern and southern groups (∼4,320 years ago) using approximate Bayesian computations. These genetic structure patterns may have been generated by a combination of the demographic history of the species in relation to the geology of the island, human activities in the stone age, deforestation due to sugar plantations (beginning approximately 300 years ago), and recent human activities. This study highlights the importance of considering genetic structure in relation to complex factors within a single‐island habitat for appropriate genetic management of endemic mammals on islands. © 2018 The Wildlife Society.

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Distribution and abundance of the Amami rabbit Pentalagus furnessi in the Amami and Tokuno Islands, Japan

Cited by 15 publications

References 9 publications

How Should Detection Probability Be Incorporated into Estimates of Relative Abundance?

How Should Detection Probability Be Incorporated into Estimates of Relative Abundance?

Molecular phylogeny of Japanese Leporidae, the Amami rabbit Pentalagus furnessi, the Japanese hare Lepus brachyurus, and the mountain hare Lepus timidus, inferred from mitochondrial DNA sequences.

Historical and recent impacts on genetic structure of an island rabbit

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