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Ecology of solitary nesting olive ridley sea turtles at Playa Grande, Costa Rica

机译：哥斯达黎加普拉亚格兰德的孤独筑巢橄榄色ridley海龟生态

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Olive ridley turtles (Lepidochelys olivacea) have two distinct mating systems: independent (solitary) and synchronized and mass assemblages (arribadas). Arrib-ada nesting beaches have been the focus of most research, even though solitary nesting is the most common behavior. The purpose of this study was to assess the contribution of solitary nesting turtles to the olive ridley turtle population. We studied the nesting ecology of solitary nesting olive ridley turtles within the national park Parque Nacional Marino Las Baulas (PNMB) in Playa Grande, Costa Rica (10°20'N, 85°51'W) and compared these turtles to nearby arribada turtles. Between 2009/2010 and 2013/2014, an estimated 933 nesting activities occurred within PNMB. This number of turtles has not changed significantly since 1995. During this study, 285 females were tagged; of these, 30 females were encountered nesting on more than one occasion. Significantly, more females emerged (31.1 % of tracks) during the third-quarter moon, often a predictor of arribada events, than any other moon phase. However, there was no significant change in nesting activity at PNMB during nearby arribada events. Mean hatching success (78.5 ± 23.4 % SD) was higher, and incubation temperatures were lower (ranging from 28.3 to 33.4 ℃) than at nearby arribada beaches. Thus, clutches are relatively successful and may produce males. These data suggest that solitary olive ridley turtles are important. Currently, PNMB protects turtles from October to March; however, hatching success was highest and 40 % of nesting activity occurred during the rainy season (August-November). More turtles could be protected by increasing the temporal scope of park protection.
机译：橄榄龟（Lepidochelys olivacea）有两个不同的交配系统：独立的（单独的）和同步的和大规模的组合（arribadas）。尽管单独筑巢是最普遍的行为，但Arrib-ada筑巢海滩一直是大多数研究的重点。这项研究的目的是评估孤巢龟对橄榄色ridley龟种群的贡献。我们研究了哥斯达黎加普拉亚格兰德（10°20'N，85°51'W）国家公园Parque Nacional Marino Las Baulas（PNMB）国家公园内单巢橄榄ridley龟的筑巢生态并将这些龟与附近的arribada龟进行了比较。在2009/2010年和2013/2014年之间，PNMB内估计发生了933例嵌套活动。自1995年以来，海龟的数量并没有发生明显变化。在这项研究中，有285只雌性被加标签；其中，不止一次遇到30位女性筑巢。值得一提的是，在第三季度的月球（通常是预兆事件）的预报者中，女性的登月次数（占铁迹的31.1％）比其他任何一个月相都多。但是，在附近的arribada事件期间，PNMB的筑巢活动没有明显变化。与附近的阿里巴达海滩相比，平均孵化成功率更高（78.5±23.4％SD），孵化温度更低（范围从28.3至33.4℃）。因此，离合器是相对成功的，并且可能产生雄性。这些数据表明，孤独的橄榄色瑞德利乌龟很重要。目前，PNMB从10月到3月保护海龟；但是，孵化成功率最高，巢活动的40％发生在雨季（8月至11月）。通过扩大公园保护的时间范围，可以保护更多的海龟。

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  • 来源
    《Marine biology》 |2015年第1期|123-139|共17页
  • 作者

    Tera C. Dornfeld; Nathan J. Robinson; Pilar Santidrian Tomillo; Frank V. Paladino;

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    University of California Irvine, 300 Social Ecology 1, Irvine, CA 92697, USA,Department of Biology, Indiana University-Purdue University Fort Wayne, Science Building, 2101 E Coliseum Blvd, Fort Wayne, IN 46835, USA;

    Department of Biology, Purdue University, Lilly Hall, 915 West State Street, West Lafayette, IN 47907, USA;

    Population Ecology Group, Institut Mediterrani d' Estudis Avancats, IMEDEA (CSIC-UIB), Mallorca, Spain;

    Department of Biology, Indiana University-Purdue University Fort Wayne, Science Building, 2101 E Coliseum Blvd, Fort Wayne, IN 46835, USA;

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