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This specialist hunter knows just how dangerous their prey can be. To solve this problem, they hypnotise crabs by changing the colour of their skin.
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This bold cinematic experience takes viewers on a magical adventure across the greatest, yet least known, parts of our planet – our oceans. Since Blue Planet aired in 2001, our understanding of life beneath the waves has completely changed. Travelling from the icy polar seas to the vibrant blues of the coral atolls, this series shares these astonishing new discoveries. Meet the strange octopuses lurking in the depths of the Antarctic Ocean. Watch giant trevally fish leap to catch birds in mid-air. And ride on the back of a hammerhead shark as it attacks. Inspiring awe and wonder, Blue Planet II reveals surprising new places, charismatic new characters and extraordinary new behaviours.
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Sequential hermaphroditism occurs when an organism changes sex at some point in its life. It’s seen in a few species of gastropods and plants, but mostly fish, like napoleon wrasse, clownfish, groupers and marine angelfish. This transformation involves the complete restructuring of their gonads, as well as changes in their morphology and behaviour. For these fish, sex change is a usual part in their life cycle, and it’s one that carries adaptive advantages.
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All images and videos used herein are 1) in the public domain, 2) used under a Creative Commons license, 3) used with a license, or 4) used under the parameters of Fair Use law.
References:
Avise JC & Mank JE. Evolutionary perspectives on hermaphroditism in fishes. Sex Dev 2009;3:152–163.
Berglund A. Sequential hermaphroditism and the size-advantage hypothesis: an experimental test. Anim Behav 1990;30:426–433.
Todd EV, et al. Bending genders: the biology of natural sex change in fish. Sex Dev 2016;10:223–241.
Casas L, et al. Sex change in clownfish: molecular insights from transcriptome analysis. Sci Rep 2016;6:35461.
Goikoetxea A, et al. Stress and sex: does cortisol mediate sex change in fish? Reproduction 2017;154:R149–R160.
Kazancioğlu E & Alonzo SH. Costs of changing sex do not explain why sequential hermaphroditism is rare. Am Nat 2009;173:327–336.
Waples RS, et al. Consequences of sex change for effective population size. Proc Biol Sci 2018;285:20181702.
Muñoz RC & Warner RR. A new version of the size-advantage hypothesis for sex change: incorporating sperm competition and size-fecundity skew. Am Nat 2003;161:749–761.
Credits:
ふうけ. https://commons.wikimedia.org/....wiki/File:Kobudai150
prilfish. https://www.flickr.com/photos/....silkebaron/232002459
Rickard Zerpe. https://commons.wikimedia.org/....wiki/File:Orange_sku
Sasuke Tsujita. https://www.youtube.com/watch?v=GD2-ZZsWBYs&ab_channel=SasukeTsujita
フリッパーダイブセンター 群馬県伊勢崎市のダイビングショップ FLIPPER dive center. https://www.youtube.com/watch?v=-5YLywPkUjM&ab_channel=%E3%83%95%E3%83%AA%E3%83%83%E3%83%91%E3%83%BC%E3%83%80%E3%82%A4%E3%83%96%E3%82%BB%E3%83%B3%E3%82%BF%E3%83%BC%E7%BE%A4%E9%A6%AC%E7%9C%8C%E4%BC%8A%E5%8B%A2%E5%B4%8E%E5%B8%82%E3%81%AE%E3%83%80%E3%82%A4%E3%83%93%E3%83%B3%E3%82%B0%E3%82%B7%E3%83%A7%E3%83%83%E3%83%97FLIPPERdivecenter
https://www.youtube.com/watch?v=4sr7rPhfWCc&ab_channel=SCUBADIVINGPRO-SHOPMAHI-MAHI
Rickard Zerpe. https://commons.wikimedia.org/....wiki/File:Yellow_clo
Carl Malamud. https://commons.wikimedia.org/....wiki/File:Yellow_Gob
Rickard Zerpe.
https://www.flickr.com/photos/....krokodiver/238064296
alif_abdulrahman. https://www.flickr.com/photos/....alif_abdulrahman/188
aquarist.me. https://www.flickr.com/photos/....aquarist/7075443335/
Christian Gloor. https://www.flickr.com/photos/....christian_gloor/3020
Christian Gloor. https://www.flickr.com/photos/....christian_gloor/3150
#sexchangingfish #sexchange #naturalselection #hermaphroditism #sequentialhermaphroditism #hermaphrodite #biology #evolutionarybiology #zoology #clownfish #kobudai #asiansheepshead
Dr. James Smalls is an art historian, with a focus on the intersections of race, gender, and queer sexuality in the art and visual culture of the nineteenth century, as well as the art and visual culture of the black diaspora. He is the author of Homosexuality in Art (Parkstone Press, 2003) and The Homoerotic Photography of Carl Van Vechten: Public Face, Private Thoughts (2006). He has published essays in a number of book anthologies and prominent journals, including American Art, French Historical Studies, Third Text, Art Journal, and Art Criticism. His book chapters and articles include: Menace at the Portal: Masculine Desire and the Homoerotics of Orientalism (2016), The Soft Glow of Brutality (2015), A Teacher Uses Star Trek for Difficult Conversations on Race and Gender (2015), Racial Antics in Late Nineteenth-Century French Art and Popular Culture (2014), Sculpting Black Queer Bodies and Desires: The Case of Richmond Barthé (2013), and Exquisite Empty Shells: Sculpted Slave Portraits and the French Ethnographic Turn (2013). Smalls is currently completing a book entitled Féral Benga: African Muse of Modernism.
In 2006, Smalls curated a two-part exhibition at the Baltimore Museum of Art on the art, career, and international influence of the African American artist, Henry Ossawa Tanner. In 2009-2010, he served as the Consulting Editor for the five-volume set of The Grove Encyclopedia of American Art. In 2015 he was appointed to the Advisory Board for The Archives of American Art Journal.
Dr. Smalls holds degrees from the University of California, Los Angeles (UCLA), in Ethnic Arts (B. A.), and Art History (M. A., and Ph.D.). He has taught at Rutgers University, Columbia University, and at the University of Paris.
NYC Photographer ISSA KHARI is based in Brooklyn NY. Issa is a Credentialed Visual Journalist and Street Photographer covering everything from Protest to Fashion Shows. After 5 years of covering events large and small, there is a stable and must follow for advocates of independent media as well as those with a passion for the arts. Issa is also a VIP live stream broadcaster on the Periscope/Twitter platform. As of 2019 Issa Khari has shifted his focus to Portrait photography and continues to work closely with local talent in New York City.
For booking inquiries see
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Dr. Oba T'Shaka on Ella Baker http://bit.ly/2XNe69Z
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Generational Trauma - Oba, Kaba, Resmaa, Brandon http://bit.ly/2WGLqz9
Araba Ifayemi Elebuibon: Babalawo to Dr. Oba T’Shaka https://goo.gl/kxqq8d
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Dr. Oba T’Shaka on the Transformation of Malcolm X https://goo.gl/65ff7D
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The Role of Religions in the African Slave Trade: Ancient and Modern Featuring: Dr. Leonard Jeffries, Dr. Oba T’Shaka and Professor Kaba Hiawatha Kamene http://bit.ly/2Di7ri3
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Professor Manu Ampim is a historian and primary (first-hand) researcher specializing in African and African American history and culture.
Currently, Prof. Ampim teaches History at Contra Costa College (San Pablo, CA) and Africana Studies/Study Abroad at Merritt College (Oakland, CA), and he is teaching a 7-Step Primary Research Methodology Course at Advancing The Research.
In 2013, he authored a breakthrough research book entitled: Death of the Willie Lynch Speech: Exposing the
Myth.
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Professor Manu Ampim on Primary Research and Hotep Hyperbole https://goo.gl/AcMZCp
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