دورية أكاديمية
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Whale shark (Rhincodon typus) seasonal presence, residence time and habitat use at darwin island, galapagos marine reserve.

التفاصيل البيبلوغرافية
العنوان: Whale shark (Rhincodon typus) seasonal presence, residence time and habitat use at darwin island, galapagos marine reserve.
المؤلفون: Acuña-Marrero D; Charles Darwin Research Station, Puerto Ayora, Galapagos Islands, Ecuador., Jiménez J; Charles Darwin Research Station, Puerto Ayora, Galapagos Islands, Ecuador., Smith F; Charles Darwin Research Station, Puerto Ayora, Galapagos Islands, Ecuador., Doherty PF Jr; Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, Colorado, United States of America., Hearn A; Turtle Island Restoration Network, Olema, California, United States of America., Green JR; Charles Darwin Research Station, Puerto Ayora, Galapagos Islands, Ecuador., Paredes-Jarrín J; Galapagos National Park Directorate, Puerto Ayora, Galapagos Islands, Ecuador., Salinas-de-León P; Charles Darwin Research Station, Puerto Ayora, Galapagos Islands, Ecuador.
المصدر: PloS one [PLoS One] 2014 Dec 31; Vol. 9 (12), pp. e115946. Date of Electronic Publication: 2014 Dec 31 (Print Publication: 2014).
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
أسماء مطبوعة: Original Publication: San Francisco, CA : Public Library of Science
مواضيع طبية MeSH: Animal Migration/*physiology , Sharks/*physiology, Animals ; Ecosystem ; Ecuador ; Female ; Islands ; Male ; Population Dynamics ; Seasons ; Temperature
مستخلص: The life history of the whale shark (Rhincodon typus), including its reproductive ecology, still remains largely unknown. Here, we present results from the first whale shark population study around Darwin Island, Galapagos Marine Reserve. Following a diversified approach we characterized seasonal occurrence, population structure and size, and described habitat use of whale sharks based on fine scale movements around the island. Whale shark presence at Darwin Island was negatively correlated with Sea Surface Temperature (SST), with highest abundance corresponding to a cool season between July and December over six years of monitoring. From 2011 to 2013 we photo-identified 82 whale sharks ranging from 4 to 13.1 m Total Length (TL). Size distribution was bimodal, with a great majority (91.5%) of adult female individuals averaging 11.35 m±0.12 m (TL±SE), all but one showing signs of a potential pregnancy. Population dynamics models for apparently pregnant sharks estimated the presence of 3.76±0.90 (mean ± SE) sharks in the study area per day with an individual residence time of 2.09±0.51 (mean ± SE) days. Movement patterns analysis of four apparently pregnant individuals tracked with acoustic tags at Darwin Island revealed an intense use of Darwin's Arch, where no feeding or specific behavior has been recorded, together with periodic excursions around the island's vicinity. Sharks showed a preference for intermediate depths (20-30 m) with occasional dives mostly to mid-water, remaining the majority of their time at water temperatures between 24-25°C. All of our results point to Darwin Island as an important stopover in a migration, possibly with reproductive purposes, rather than an aggregation site. Current studies carried out in this area to investigate regional scale movement patterns may provide essential information about possible pupping grounds for this enigmatic species.
References: J Fish Biol. 1997 Dec;51(6):1219-1234. (PMID: 29991171)
J Fish Biol. 2013 Sep;83(3):574-87. (PMID: 23991875)
J Fish Biol. 2011 Jan;78(1):378-85. (PMID: 21235570)
PLoS One. 2013 Aug 21;8(8):e71883. (PMID: 23991000)
Science. 1927 Jun 3;65(1692):545. (PMID: 17832674)
J Fish Biol. 2012 Apr;80(5):1019-56. (PMID: 22497372)
J Fish Biol. 2013 Feb;82(2):367-89. (PMID: 23398057)
J Fish Biol. 2012 Apr;80(5):1401-16. (PMID: 22497390)
Biometrics. 2001 Dec;57(4):1113-22. (PMID: 11764251)
Mar Biol. 2010;157(9):1899-1915. (PMID: 24391250)
تواريخ الأحداث: Date Created: 20150101 Date Completed: 20151001 Latest Revision: 20240314
رمز التحديث: 20240314
مُعرف محوري في PubMed: PMC4281130
DOI: 10.1371/journal.pone.0115946
PMID: 25551553
قاعدة البيانات: MEDLINE
الوصف
تدمد:1932-6203
DOI:10.1371/journal.pone.0115946