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Poehn B, Krishnan S, Zurl M, Coric A, Rokvic D, Häfker NS, Jaenicke E, Arboleda E, Orel L, Raible F, Wolf E, Tessmar-Raible K. A Cryptochrome adopts distinct moon- and sunlight states and functions as sun- versus moonlight interpreter in monthly oscillator entrainment. Nat Commun 2022; 13:5220. [PMID: 36064778 PMCID: PMC9445029 DOI: 10.1038/s41467-022-32562-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 08/05/2022] [Indexed: 11/24/2022] Open
Abstract
The moon's monthly cycle synchronizes reproduction in countless marine organisms. The mass-spawning bristle worm Platynereis dumerilii uses an endogenous monthly oscillator set by full moon to phase reproduction to specific days. But how do organisms recognize specific moon phases? We uncover that the light receptor L-Cryptochrome (L-Cry) discriminates between different moonlight durations, as well as between sun- and moonlight. A biochemical characterization of purified L-Cry protein, exposed to naturalistic sun- or moonlight, reveals the formation of distinct sun- and moonlight states characterized by different photoreduction- and recovery kinetics of L-Cry's co-factor Flavin Adenine Dinucleotide. In Platynereis, L-Cry's sun- versus moonlight states correlate with distinct subcellular localizations, indicating different signaling. In contrast, r-Opsin1, the most abundant ocular opsin, is not required for monthly oscillator entrainment. Our work reveals a photo-ecological concept for natural light interpretation involving a "valence interpreter" that provides entraining photoreceptor(s) with light source and moon phase information.
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Affiliation(s)
- Birgit Poehn
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
| | - Shruthi Krishnan
- Institute of Molecular Physiology (IMP), Johannes Gutenberg-University, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Martin Zurl
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
| | - Aida Coric
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
| | - Dunja Rokvic
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
| | - N Sören Häfker
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
| | - Elmar Jaenicke
- Institute of Molecular Physiology (IMP), Johannes Gutenberg-University, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
| | - Enrique Arboleda
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
- Institut de Génomique Fonctionnelle de Lyon (IGFL), École Normale Supérieure de Lyon, 32 avenue Tony Garnier, 69007, Lyon, France
| | - Lukas Orel
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
| | - Florian Raible
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria
| | - Eva Wolf
- Institute of Molecular Physiology (IMP), Johannes Gutenberg-University, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany.
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany.
| | - Kristin Tessmar-Raible
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Vienna, Austria.
- Research Platform "Rhythms of Life", University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9/4, A-1030, Vienna, Austria.
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570, Bremerhaven, Germany.
- Carl-von-Ossietzky University, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany.
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Rojas-Cañizales D, Mejías-Balsalobre C, Espinoza-Rodríguez N, Bézy VS, Naranjo I, Arauz R, Valverde RA. Corozalito: a nascent arribada nesting beach in Costa Rica. MARINE BIOLOGY 2022; 169:59. [PMID: 35400758 PMCID: PMC8980208 DOI: 10.1007/s00227-022-04039-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
Costa Rica hosts two renowned olive ridley (Lepidochelys olivacea) arribada beaches: Nancite and Ostional. In addition, the country hosts a third nascent arribada beach in Corozalito. We documented the frequency of arribada events in Corozalito (9°50'55.40″ N; 85°22' 47.67″ W) from 2008 to 2021 and the abundance of egg-laying females during 12 arribadas. Moreover, we report on tag recaptures at Corozalito that were initially deployed at other nesting beaches in Costa Rica. Finally, we estimated incubation temperature, and performed quadrat and nest excavations to estimate hatching rates. We registered 29 arribadas at Corozalito since 2008, all between August and January. We estimated more than 150,000 olive ridleys nested during 12 arribadas from 2019 to 2021. Mean hatching success was 65% in quadrats and 59% for in situ marked nests. The mean incubation temperature was 32.3 °C. We found turtles tagged at other locations on the Pacific coast of Costa Rica nesting at Corozalito, providing evidence of philopatric plasticity. We suggest nascent arribada rookeries form rapidly via recruitment from regional turtle aggregations. Our findings show that hatching success is far higher at Corozalito than Ostional or Nancite. Continued monitoring of nesting dynamics at this site may shed light upon the mechanisms that rule how arribada beaches are born and evolve. Corozalito offers a unique opportunity to study and understand the arribada phenomenon and warrants official protection under official National Wildlife Refuge status.
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Affiliation(s)
- Daniela Rojas-Cañizales
- Rescue Center for Endangered Marine Species (CREMA), San Francisco de Coyote, Guanacaste, 50906 Costa Rica
- Grupo de Trabajo en Tortugas Marinas del Golfo de Venezuela (GTTM-GV), Maracaibo, 4001 Venezuela
| | - Carmen Mejías-Balsalobre
- Rescue Center for Endangered Marine Species (CREMA), San Francisco de Coyote, Guanacaste, 50906 Costa Rica
- Red de Investigadores Actuando por el Medio Ambiente (RIAMA), C/Nuñez de Balboa 114, 28006 Madrid, Spain
| | - Nínive Espinoza-Rodríguez
- Rescue Center for Endangered Marine Species (CREMA), San Francisco de Coyote, Guanacaste, 50906 Costa Rica
- Grupo de Trabajo en Tortugas Marinas del Golfo de Venezuela (GTTM-GV), Maracaibo, 4001 Venezuela
| | - Vanessa S. Bézy
- Wildlife Conservation Association, Nosara, Guanacaste 50206 Costa Rica
| | - Isabel Naranjo
- Rescue Center for Endangered Marine Species (CREMA), San Francisco de Coyote, Guanacaste, 50906 Costa Rica
| | - Randall Arauz
- Fins Attached Marine Research and Conservation, 19675 Glen Drive, Colorado Springs, CO 80908 USA
| | - Roldán A. Valverde
- Sea Turtle Conservancy, 4581 NW 6th St, Suite A, Gainesville, FL 32609 USA
- Southeastern Louisiana University, Hammond, LA 70402 USA
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Mishra M, Acharyya T, Kar D, Debanath M, Santos CAG, Silva RMD, Kamal AHM, Sahu JK, Idris MH. Geo-ecological cues for mass nesting synchronization of Olive Ridley turtles along Rushikulya estuary in Odisha, east coast of India. MARINE POLLUTION BULLETIN 2021; 172:112881. [PMID: 34454383 DOI: 10.1016/j.marpolbul.2021.112881] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 06/21/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
In this study, we have analyzed how geo-ecological cues for endangered Olive Ridley turtles' mass nesting behavior got modified by impact of four severe cyclones during 2010-2019 that made landfall in the vicinity of Rushikulya estuary, which is one of the largest mass nesting congregation (arribada) sites in the world. Analyzing last 10 years of shoreline dynamics, we show that even the slightest modification in beach morphology influenced their nesting behavior in Rushikulya rookery. Shoreline change analysis showed periodic phases of high/low erosion and the northward longshore sediment movement, which becomes impeded by the southern spit, the length of which increased by about 1800 m. During the analyzed period, the nesting behavior of Olive Ridley turtle was greatly influenced by changes in land use and land cover pattern around the Rushikulya rookery. Such reductions in tree cover and marshy land areas were majorly driven by anthropogenic activities and extreme weather events, such as cyclones. We also report increased mortality of turtles, no or false mass nesting events due to significant loss and/or erosion of the nesting sites due to cyclones. The results indicate that conservation of Olive Ridley turtles should be more holistic, or ecosystem centric, rather than species centric. It is important to maintain the ecological integrity of their habitat for highly synchronized mass nesting event and eventually their survival.
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Affiliation(s)
- Manoranjan Mishra
- Department of Natural Resources Management and Geo-informatics, Khallikote University, Berhampur, Odisha 768003, India; Berhampur University, Berhampur, Odisha 760007, India
| | | | - Dipika Kar
- Department of Natural Resources Management and Geo-informatics, Khallikote University, Berhampur, Odisha 768003, India
| | - Manasi Debanath
- Department of Geography, North-Eastern Hill University (NEHU), Shillong 793022, India
| | | | | | - Abu Hena Mustafa Kamal
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Centre for Environment and Sustainability, Presidency Education, 51 Panchlaish, Chittagong 4203, Bangladesh
| | - Jagadish Kumar Sahu
- Department of Natural Resources Management and Geo-informatics, Khallikote University, Berhampur, Odisha 768003, India
| | - Mohd Hanafi Idris
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
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