• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology >Abundance, distribution and habitat preference of Hippocampus guttulatus and Hippocampus hippocampus in a semi-enclosed central Mediterranean marine area
【24h】

Abundance, distribution and habitat preference of Hippocampus guttulatus and Hippocampus hippocampus in a semi-enclosed central Mediterranean marine area

机译：地中海中部半封闭海域海马guttulatus和海马海马的丰度，分布和生境偏好

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Population abundance, distribution and habitat preference of the Mediterranean sympatric seahorses Hippocampus guttulatus and Hippocampus hippocampus were investigated in a semi-enclosed sea system (Apulian coast, Ionian Sea). A total of 242 individuals of seahorses were sighted in the 11 transects surveyed in summer 2011. Hippocampus guttulatus (n = 225) were 14 times more abundant than H. hippocampus (17). The mean abundance of H. guttulatus for all the pooled sites was 0.018 m(-2) (SE +/- 0.003) ranging from a maximum of 0.035 (SE +/- 0.007) to a minimum of 0.008 (SE +/- 0.002). The size structure of long-snouted seahorse shows a population ranging from 7 to 14 cm (SL) with a peak at 10 cm (TL). Juveniles (96.0 +/- 8.0 mm) represent a significant fraction of the population, accounting more than 21% of the sighted individuals. In Mar Piccolo, H. guttulatus is able to shelter both in monotonous habitats, including the algal beds, and diversified ones, such as the rich filter-feeder communities that colonize hard substrates. By contrast, H. hippocampus is mainly associated with habitats of low complexity. Today, the Mar Piccolo di Taranto is among the most heavily polluted water bodies in South Italy, with trace metals, hydrocarbons, pesticides and organic wastes affecting both biotic and abiotic matrices. However, despite the high level of degradation, the presence of a large mussel farm has avoided the impact of towed fishing gears, and eutrophication of water bodies has ensured a high trophic level that supports large crustacean populations, potential prey for seahorses.
机译：在半封闭的海洋系统（爱奥尼亚海普利亚海岸）中研究了地中海同伴海马海马guttulatus和海马海马的种群丰度，分布和栖息地偏好。在2011年夏季进行的11个样例调查中，共发现242只海马。海马guttulatus（n = 225）比海马H.海马（17）多14倍。所有合并部位的古特氏嗜血杆菌的平均丰度为0.018 m（-2）（SE +/- 0.003），范围从最大值0.035（SE +/- 0.007）到最小值0.008（SE +/- 0.002） ）。长鼻海马的大小结构显示出7至14厘米（SL）的种群，峰值在10厘米（TL）。少年（96.0 +/- 8.0毫米）占人口的很大一部分，占有视力个体的21％以上。在Mar Piccolo中，H。guttulatus能够在单调的栖息地（包括藻类床）和多样化的栖息地（例如在硬质底物上殖民的丰富的滤食动物群落）提供庇护。相比之下，海马嗜血杆菌主要与复杂性较低的栖息地有关。如今，Mar Piccolo di Taranto已成为意大利南部污染最严重的水体之一，其中的痕量金属，碳氢化合物，农药和有机废物会影响生物和非生物基质。然而，尽管退化程度很高，但大型贻贝养殖场的存在避免了拖曳的渔具的影响，水体的富营养化确保了高营养水平，可支撑大量甲壳类种群，这是海马的潜在猎物。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号