哺乳动物研究是日本哺乳动物学会的官方期刊。它发表关于哺乳动物学各个方面的原创文章、简短的交流和评论，以英文撰写。

Mammal Study is the official journal of the Mammalogical Society of Japan, focusing on various aspects of mammalogy. The journal publishes original research articles, short communications, and reviews, all written in English.

《Mammal Study》是日本哺乳动物学会的官方期刊，专注于哺乳动物学的各个领域。期刊发表原创研究文章、简短交流和评论，所有内容均以英文撰写。

Mammal Study

Reiko Mitsuhashi

Takeru Tsunoi

Masashi Harada

Shuji Yachimori

Shinji Yano

Hitoshi Suzuki

Evolutionary History of Geographically Isolated Populations of the Lesser Japanese Mole (Mogera imaizumii) Inferred from Mitochondrial Cytochrome b Gene Sequences

基于线粒体细胞色素b基因序列推断日本小鼹鼠（Mogera imaizumii）地理隔离种群的进化历史

Arshyaan Shahid

Shahzada Iqbal

Orus Ilyas

Bridging borders: insights into the human-elephant dynamics in the Palamau Tiger Reserve

跨越边界：帕拉马老虎保护区人象互动的洞察

We investigated semen quality and seasonal changes in serum testosterone (T) concentrations in a male false killer whale, Pseudorca crassidens, under managed care. Semen was collected 107 times in 27 sessions for 22 months between June 2018 and April 2020 and analyzed for semen volume, sperm concentration, total motility, progressive motility, viability, and kinetic rating. Serum T concentrations in blood samples were measured by fluorescence immunoassay 1–4 times a month for routine health assessments from April 2016 to May 2022. The fourth and fifth ejaculates of each session were typically lower in volume but had higher values for all other tested parameters. The monthly mean serum T concentration showed a seasonal change; it began to increase in September, peaked between November and January (i.e., fall to spring), and declined until August (i.e., in late summer). This is the first report on semen quality in false killer whales, where we observed seasonal changes in T concentrations and established that the fourth and fifth ejaculates of a session yielded good-quality semen. Received 4 February 2022. Accepted 28 May 2024.

Suguru Higa

Mariko Omata

Misato Nakamura

Nozomi Kobayashi

Keiichi Ueda

Isao Kawazu

Long-Term Monitoring of Semen Quality and Serum Testosterone Concentration in a Male False Killer Whale in Managed Care

长期监测圈养雄性伪虎鲸精液质量和血清睾酮浓度

Rodents are the most abundant mammals on Earth, prevalent on all continents except Antarctica, and they fulfill important ecological roles in various ecosystems. Recent progress in high-throughput DNA-sequencing technology has enabled identification of diet components in various environmental samples, such as feces or stomach contents, through DNA metabarcoding. Studies using this method have begun to clarify the diets of small, nocturnal, and elusive rodents. This review summarizes previous studies that used DNA metabarcoding to clarify the diets of native or exotic species in Rodentia to understand progress and unresolved problems in such analyses. Furthermore, the methodology of dietary DNA metabarcoding in rodents is discussed, together with issues that should be taken into consideration. Finally, future perspectives and directions to be considered in the use of DNA metabarcoding in dietary studies of rodents are discussed. Received 30 March 2024. Accepted 22 August 2024

Jun J. Sato

Diets of Rodents Revealed through DNA Metabarcoding

通过DNA代谢条形码揭示啮齿动物的饮食

José Juan Flores-Martínez

Luz E. Correa

Daniel Pichardo

Víctor Sánchez-Cordero

Lázaro Guevara

An Insight into the Habitat and Population Fluctuation of Two Species of Shrews (Eulipotyphla, Soricidae) in a Forest-Agricultural Ecotone of the Trans-Mexican Volcanic Belt

墨西哥中部火山带森林-农业生态交错带两种鼩鼱（食虫目，鼩鼱科）的栖息地与种群波动研究

Abbreviation	Mammal Study
Journal Impact	0.86
Quartiles(Global)	ZOOLOGY(Q3)

ISSN	1343-4152, 1348-6160
h-index	22

Publication Information	Publisher: Mammalogical Society of Japan，Publishing cycle: Semiannual，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 2008，Proportion of original research papers: 100.00%，Self Citation Rate:25.00%， Gold OA Rate: 0.00%
Average review cycle	网友分享经验：>12周，或约稿
Average recruitment ratio	网友分享经验：容易

Mammal Study

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Evolutionary History of Geographically Isolated Populations of the Lesser Japanese Mole (Mogera imaizumii) Inferred from Mitochondrial Cytochrome b Gene Sequences

Bridging borders: insights into the human-elephant dynamics in the Palamau Tiger Reserve

Long-Term Monitoring of Semen Quality and Serum Testosterone Concentration in a Male False Killer Whale in Managed Care

Diets of Rodents Revealed through DNA Metabarcoding

An Insight into the Habitat and Population Fluctuation of Two Species of Shrews (Eulipotyphla, Soricidae) in a Forest-Agricultural Ecotone of the Trans-Mexican Volcanic Belt

Evolutionary History of Geographically Isolated Populations of the Lesser Japanese Mole (Mogera imaizumii) Inferred from Mitochondrial Cytochrome b Gene Sequences

Bridging borders: insights into the human-elephant dynamics in the Palamau Tiger Reserve

Long-Term Monitoring of Semen Quality and Serum Testosterone Concentration in a Male False Killer Whale in Managed Care

Diets of Rodents Revealed through DNA Metabarcoding

An Insight into the Habitat and Population Fluctuation of Two Species of Shrews (Eulipotyphla, Soricidae) in a Forest-Agricultural Ecotone of the Trans-Mexican Volcanic Belt