不同孵育处理对榄蠵龟繁殖成功率的影响

IF 0.7 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
Pacific Science Pub Date : 2023-04-26 DOI:10.2984/76.4.4
J.L. Sandoval-Ramírez, E. Solana‐Arellano
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引用次数: 0

摘要

摘要:在极端气候条件(如高温)的筑巢区,宜采取缓解策略来抵消这些对海龟巢孵化成功率的负面影响。研究了2019年墨西哥格雷罗州橄榄蠵龟产卵季节孵育处理对其孵化成功率和孵育期的影响。三种孵育处理(T1 =遮荫+淡水灌溉;T2 =遮荫、海水预灌、覆沙、淡水灌溉;T3 =遮荫,海水预灌,覆盖塑料盖和淡水灌溉)在筑巢季节的两个不同时间进行试验。我们的目标之一是比较孵化巢和原地巢的繁殖成功率,然而,原地巢的孵化成功率为零。我们发现,处理对孵化成功率和孵化期没有影响,但死亡和破碎的孵化比例有差异。在第二次迁移期间孵育的卵卵孵育时间较长。然而,迁巢时间对孵化成功率、死亡幼体和破碎幼体的比例没有影响。结果还表明,灌水量和灌水量对孵化卵的杀伤作用不大,但能延长孵化期。这些结果有助于提高我们对海龟繁殖成功率的认识,并可作为适应其他环境条件相似地区孵化场时空条件的基准。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Reproductive Success of the Olive Ridley Turtle Lepidochelys olivacea (Testudinata: Cheloniidae) Using Different Incubation Treatments
Abstract: In nesting areas with extreme climatic conditions, such as high temperatures, it is advisable to use mitigation strategies that counteract these negative effects on the hatching success of sea turtle nests. We evaluated the effect of incubation treatment on hatching success and incubation period for olive ridley turtles Lepidochelys olivacea during the 2019 nesting season in Guerrero, Mexico. Three incubation treatments (T1 = shade & freshwater irrigation; T2 = shade, seawater pre-irrigation, sand covered & freshwater irrigated; T3 = shade, seawater pre-irrigation, covered with a plastic lid & freshwater irrigated) were trialed at two different times during the nesting season. One of our goals was to compare the reproductive success of hatchery nests versus in situ nests, however, in situ nests hatching success was zero. We found that treatments had no effect on hatching success or incubation period, but there were differences in proportions of dead and crushed hatchlings. Clutches incubated in the second relocation period had longer incubation times. However, nest relocation periods had no effect on hatching success, dead hatchlings, or the proportion of crushed hatchlings. Our results also showed that the amount of seawater applied to the holes and the rate of irrigation were not lethal for the incubating eggs, but prolonged the incubation period. These results could help to increase our understanding of sea turtle reproductive success and may serve as a baseline to adapt the spatio-temporal conditions of the hatcheries in other areas with similar environmental conditions.
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来源期刊
Pacific Science
Pacific Science 生物-动物学
CiteScore
1.40
自引率
14.30%
发文量
17
审稿时长
3 months
期刊介绍: Pacific Science: A Quarterly Devoted to the Biological and Physical Sciences of the Pacific Region The official journal of the Pacific Science Association. Appearing quarterly since 1947, Pacific Science is an international, multidisciplinary journal reporting research on the biological and physical sciences of the Pacific basin. It focuses on biogeography, ecology, evolution, geology and volcanology, oceanography, paleontology, and systematics. In addition to publishing original research, the journal features review articles providing a synthesis of current knowledge.
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