[MARMAM] New paper: length-at-age estimate of T. aduncus by 3D camera
Dear MARMAM members,
We are pleased to share the following study on the standard length-at-age
estimates of Indo-Pacific bottlenose dolphins in Mikura Island, Japan by
simple 3D camera system.
Morisaka, T., Sakai, M., Hama, H., Kogi, K. Body length and growth pattern
of free-ranging Indo-Pacific bottlenose dolphins off Mikura Island
estimated using an underwater 3D camera. Mamm Biol (2022).
https://doi.org/10.1007/s42991-022-00304-9
You can see pdf online at "Shared It".
https://rdcu.be/cV9a2
Or you can request me a pdf copy.
All the best,
Tadamichi Morisaka (Chaka)
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Tadamichi MORISAKA, Ph.D.
Associate Professor
Cetacean Research Center,
Graduate school of Bioresources
Mie University
Room #619
1577 Kurimamachiya-cho, Tsu city
Mie 514-8507 JAPAN
Tel: +81-59-231-6975
ch...@bio.mie-u.ac.jp
http://marinemammal.jimdo.com/
Center URL: https://crc.bio.mie-u.ac.jp
=
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[MARMAM] Symposium "The Ganges River Dolphins"
Dear Marmam list members, We are pleased to announce and invite you to participate in the following international symposium at Shizuoka, JAPAN. For more detail & submission, please visit our website. http://marinemammal.jimdo.com/ The deadline of the poster presentation submission will be 12th, Feb. All topics of marine mammal scientific studies can be accepted for this presentation. International Symposium "The Ganges River Dolphin" Host: Tokai University Institute of Innovative Science and Technology Co-host: Institute of Oceanic Research and Development, Tokai University School of Marine Science and Technology, Tokai University (Public Seminar of School of Marine Science and Technology, Tokai University) Date: 26th, Feb 2016 (FRI) 10:00 – 17:30 Free of charge (\1,000 for banquet) Location : Shizuoka Convention Arts Center “GRANSHIP” Audio Visual Hall (2F) Tentative Schedule & Titles: 9:30 Open 10:00 Opening Remarks | Dr. Yasuhiro Senga (Dean, School of Marine Science and Technology) 10:10 IIST introduction | Dr. Shigeru Yamaguchi (Director, IIST) 10:20 Dr. Yoshihiro Tanaka (Numata Fossil Museum) “Evolution of the Ganges River dolphin group” 11:05 Dr. Yukiko Yamamoto (National Research Institute of Fisheries Engineering) “Acoustic behavior of the Ganges River dolphins” 11:35 – 13:00 Lunch & Poster Viewing 13:00 Dr. Toshio Kasuya “The dawn of the Japanese research on the Ganges River dolphins” 13:40 Dr. Sunil K. Choudhary (T.M. Bhagalpur University) “Conserving Ganges river dolphins in a dynamic and conflict-ridden environment: Vikramshila Gangetic Dolphin Sanctuary” 14:30 Mr. Nachiket Kelkar (Ashoka Trust for Research in Ecology and the Environment) “Ecological research towards re-calibrating Ganges river dolphin conservation” 15:15 Dr. Tadamichi Morisaka (Tokai University) “Acoustic research in Vikramshila Gangetic Dolphin Sanctuary” 15:40 – 17:20 Poster Session for marine mammal studies (Call for papers!) 17:20 Closing Remarks | Dr. Masahisa Kubota (Director, IORD) 17:30 – 19:30 Banquet at OASIS (1st floor of the GRANSHIP) (\1,000 per one person) Organizing Committee: Tadamichi Morisaka, Yayoi M. Yoshida, Nobuyuki Ozawa, Youko Takeshita Registration & Submission : http://marinemammal.jimdo.com/ Contact: Tadamichi Morisaka (IIST, IORD) ch...@tokai-u.jp ___ MARMAM mailing list MARMAM@lists.uvic.ca https://lists.uvic.ca/mailman/listinfo/marmam
[MARMAM] International Symposium "Dolphin acoustics, behavior and cognition"
Dear Marmam list members,
We are pleased to announce and invite you to participate in the following
international symposium at Shizuoka, JAPAN.
For more detail & submission, please visit
http://marinemammal.jimdo.com/symposium/
We will wait for your poster presentation submission till 24th, Jan. All
topics of marine mammal scientific studies (and large terrestrial mammal
studies) can be accepted for this presentation.
International symposium "Dolphin acoustics, behavior and cognition"
2nd Feb 2014 (Sun) 10:00 -17:30
Shizuoka Convention & Arts Center "Granship" Room #910
(http://www.granship.or.jp/english/)
Free of charge
[Invited speakers from overseas]
Vicent Janik (Univ St Andrews)
Laela Sayigh (Woods Hole Ocean. Inst.)
[Invited Japanese speakers]
Tomonari Akamatsu (NRIFE, FRA)
Fumio Nakahara (Tokiwa Univ)
Masaki Tomonaga (Kyoto Univ)
Mai Sakai (Tokai Univ)
[Host]
Tokai University Institute of Innovative Science and Technology
[Co-host]
Institute of Oceanic Research and Development, Tokai University
School of Marine Science and Technology, Tokai University
[Sponsor]
JST Program “Disseminate Tenure Tracking System”
We are waiting for your coming!
All the best,
Tadamichi Morisaka
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===
Tadamichi MORISAKA, Ph.D.
Assistant Professor
Tokai University Institute of Innovative Science and Technology
(c/o Institute of Oceanic Research and Development)
Room 8427, Building No. 8
Institute of Oceanic Research and Development, Tokai University
3-20-1, Orido, Shimizu-ku, Shizuoka-shi,
Shizuoka 424-8610, Japan
Tel: +81-54-334-0411 (ext. 3431)
ch...@tokai-u.jp
http://www23.atwiki.jp/cetacea
http://www.u-tokai.ac.jp/tuiist/index.html
===
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[MARMAM] New paper on spontaneous ejaculation in a wild dolphin
Dear MARMAM subscribers, I'm pleased to announce the following paper on spontaneous ejaculation in a wild dolphin: Morisaka T, Sakai M, Kogi K, Nakasuji A, Sakakibara K, Kasanuki Y, Yoshioka M (2013) Spontaneous ejaculation in a wild Indo-Pacific bottlenose dolphin (Tursiops aduncus). PLoS ONE 8(8): e72879. doi:10.1371/journal.pone.0072879 [Abstract] Spontaneous ejaculation, which is defined as the release of seminal fluids without apparent sexual stimulation, has been documented in boreoeutherian mammals. Here we report spontaneous ejaculation in a wild Indo-Pacific bottlenose dolphin (Tursiops aduncus), and present a video of this rare behavior. This is the first report of spontaneous ejaculation by an aquatic mammal, and the first video of this behavior in animals to be published in a scientific journal. This is an open-access paper and everyone can download this paper from the following site: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0072879 Please email me at ch...@wrc.kyoto-u.ac.jp if you have any trouble to download it. All the best, Tadamichi Morisaka (Chaka) -- === Tadamichi MORISAKA, Ph.D. Assistant Professor Wildlife Research Center of Kyoto University 2-24, Tanaka-Sekiden-cho, Sakyo-ku, Kyoto 606-8203, Japan Tel: 075-771-4388; Fax: 075-771-4394 ch...@wrc.kyoto-u.ac.jp http://www23.atwiki.jp/cetacea http://www.wrc.kyoto-u.ac.jp/ === ___ MARMAM mailing list MARMAM@lists.uvic.ca https://lists.uvic.ca/mailman/listinfo/marmam
[MARMAM] New publication on beluga sound exchange
Dear MARMAM list subscribers, We are pleased to announce the publication on beluga sound exchange in Journal of Ethology (online). A pdf can be requested at: ch...@wrc.kyoto-u.ac.jp All the best, Tadamichi Morisaka Morisaka T, Yoshida Y, Akune Y, Mishima H, Nishimoto S. 2013. Exchange of “signature” calls in captive belugas (Delphinapterus leucas). Journal of Ethology. doi:10.1007/s10164-013-0358-0. Abstract Belugas (Delphinapterus leucas) produce echolocation clicks, burst pulses, and whistles. The sounds of 3 captive belugas were recorded using 2 hydrophones at the Port of Nagoya Public Aquarium. There were stable individual differences in the pulse patterning of one type of pulsed sounds (PS1 call), suggesting that belugas use these as “signature” calls. Eighty-eight percent of PS1 calls initiated PS1 calls from other animals within 1 s. PS1 calls repeated by the same individual occurred primarily when other belugas did not respond within 1 s of the first call. Belugas delayed successive PS1 calls when other belugas responded with a PS1 call within 1 s. There was no clear temporal pattern for whistles. It appears that the time limit for responding to calls is 1 s after the initial call. If other individuals do not respond to the PS1 call of a beluga within 1 s, belugas tend to repeat the call and wait for a response. The results of this study suggest that the belugas exchange their individual signatures by using PS1 calls, in a manner similar to that of signature whistles used by bottlenose dolphins. === Tadamichi MORISAKA, Ph.D. Assistant Professor Wildlife Research Center of Kyoto University 2-24, Tanaka-Sekiden-cho, Sakyo-ku, Kyoto 606-8203, Japan Tel: 075-771-4388; Fax: 075-771-4394 ch...@wrc.kyoto-u.ac.jp http://www23.atwiki.jp/cetacea http://www.wrc.kyoto-u.ac.jp/ === ___ MARMAM mailing list MARMAM@lists.uvic.ca https://lists.uvic.ca/mailman/listinfo/marmam
[MARMAM] New publication on Heaviside's dolphin acoustics
Dear Marmam subscribers, The following paper has recently been published online in the Journal of the Acoustical Society of America. For a copy, you can check the journal website at http://link.aip.org/link/?JAS/129/449, or contact: ch...@wrc.kyoto-u.ac.jp . Echolocation signals of Heaviside's dolphins (Cephalorhynchus heavisidii) Tadamichi Morisaka, Leszek Karczmarski, Tomonari Akamatsu, Mai Sakai, Steve Dawson, Meredith Thornton, J. Acoust. Soc. Am. 129, 449-457 (2011) The abstract is as follows; Field recordings of echolocation signals produced by Heaviside's dolphins (Cephalorhynchus heavisidii) were made off the coast of South Africa using a hydrophone array system. The system consisted of three hydrophones and an A-tag (miniature stereo acoustic data-logger). The mean centroid frequency was 125 kHz, with a -3 dB bandwidth of 15 kHz and -10 dB duration of 74 µs. The mean back-calculated apparent source level was 173 dB re 1 µPap.-p.. These characteristics are very similar to those found in other Cephalorhynchus species, and such narrow-band high-frequency echolocation clicks appear to be a defining characteristic of the Cephalorhynchus genus. Click bursts with very short inter-click intervals (up to 2 ms) were also recorded, which produced the "cry" sound reported in other Cephalorhynchus species. Since inter-click intervals correlated positively to click duration and negatively to bandwidth, Heaviside's dolphins may adjust their click duration and bandwidth based on detection range. The bimodal distribution of the peak frequency and stable bimodal peaks in spectra of individual click suggest a slight asymmetry in the click production mechanism. URL: http://link.aip.org/link/?JAS/129/449 DOI: 10.1121/1.3519401 Permalink: http://dx.doi.org/10.1121/1.3519401 === Tadamichi MORISAKA, Ph.D. Assistant Professor Wildlife Research Center of Kyoto University 3F, 2-24, Tanaka-Sekiden-cho, Sakyo-ku, Kyoto 606-8203, Japan Tel: 075-771-4388; Fax: 075-771-4394 ch...@wrc.kyoto-u.ac.jp http://www23.atwiki.jp/cetacea http://www.wrc.kyoto-u.ac.jp/ === ___ MARMAM mailing list MARMAM@lists.uvic.ca https://lists.uvic.ca/mailman/listinfo/marmam
[MARMAM] New paper on odontocetes sound evolution
Dear All, We are pleased to announce the publication of a new paper, "Predation by killer whales (Orcinus orca) and the evolution of whistle loss and narrow-band high frequency clicks in odontocetes''. Please email me (Tadamichi Morasaka) for reprints ([EMAIL PROTECTED]). OR please download the following site: http://www.blackwell-synergy.com/doi/abs/10./j.1420-9101.2007.01336.x (NOTE:The pdf file has about 2MB!!) T. MORISAKA, R. C. CONNOR Predation by killer whales (Orcinus orca) and the evolution of whistle loss and narrow-band high frequency clicks in odontocetes Journal of Evolutionary Biology (OnlineEarly Articles). doi:10./j.1420-9101.2007.01336.x abstract: A disparate selection of toothed whales (Odontoceti) share striking features of their acoustic repertoires including the absence of whistles and high frequency but weak (low peak-to-peak source level) clicks that have a relatively long duration and a narrow bandwidth. The non-whistling, high frequency click species include members of the family Phocoenidae, members of one genus of delphinids, Cephalorhynchus, the pygmy sperm whale, Kogia breviceps, and apparently the sole member of the family Pontoporiidae. Our review supports the 'acoustic crypsis' hypothesis that killer whale predation risk was the primary selective factor favouring an echolocation and communication system in cephalorhynchids, phocoenids and possibly Pontoporiidae and Kogiidae restricted to sounds that killer whales hear poorly or not at all (< 2 and > 100 kHz). ooooo Tadamichi MORISAKA, Ph.D. Postdoctral researcher of JSPS Kohshima Laboratory, Department of Biological Sciences, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology W3-43, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8551, JAPAN +81-3-5734-3383 (tel); +81-3-5734-2946 (fax) [EMAIL PROTECTED] (-April) [EMAIL PROTECTED] http://ecol.zool.kyoto-u.ac.jp/~chaka/ http://www.interq.or.jp/www-user/chakasha/ o ___ MARMAM mailing list MARMAM@lists.uvic.ca https://lists.uvic.ca/mailman/listinfo/marmam
