Moreno Xchel G, Abitia L Andrés, Favila Araceli, Gutiérrez Francisco J, Palacios Devis S
Centro Interdisciplinario de Ciencias Marinas (CICIMAR-IPN), Playa Palo de Santa Rita s/n Apartado postal 592 La Paz, Baja Califórnia Sur, México.
Rev Biol Trop. 2009 Mar-Jun;57(1-2):113-23.
Monthly samples were taken from November 2004 to October 2005 in the Los Frailes reef, BCS, Mexico. The objective was to determine the feeding habits of the pufferfish, Arothron meleagris, as well as possible variations in feeding patterns due to size and/or sex. We captured 101 specimens, with all stomachs contained food. The index of relative importance (IRI) was used to determine the main items; which were non-identified organic matter (NIOM) (30.44%), Echinometra vanbrunti (26.25 %), Porifera (12.63 %), Pocillopora spp. (11.84%), Bryozoa (5.37 %) and Porites spp. (4.83 %). Levin's index indicated a low trophic niche breadth (Bi=0.12) and allowed us to determine that A. meleagris is a specialist predator with strong preferences towards certain food types. The Morisita-Horn index showed a high trophic overlap between sexes (Clambda=0.78), seasons (hot and cold Clambda=0.95) and among sizes (small and medium Clambda=0.94; small and large Clambda=0.74; medium and large Clambda=0.83).
2004年11月至2005年10月期间，每月在墨西哥南下加利福尼亚州的洛斯弗拉伊莱斯礁采集样本。目的是确定黑背鼻鱼的摄食习性，以及由于鱼的大小和/或性别导致的摄食模式可能存在的变化。我们捕获了101个标本，所有标本的胃中都含有食物。相对重要性指数（IRI）用于确定主要食物种类；它们分别是未鉴定的有机物（NIOM）（30.44%）、凡氏海胆（26.25%）、多孔动物门（12.63%）、鹿角珊瑚属（11.84%）、苔藓虫纲（5.37%）和孔珊瑚属（4.83%）。莱文指数表明营养生态位宽度较低（Bi = 0.12），这使我们能够确定黑背鼻鱼是一种对特定食物类型有强烈偏好的特化捕食者。森下-霍恩指数显示，不同性别之间（Clambda = 0.78）、不同季节之间（炎热和寒冷季节Clambda = 0.95）以及不同大小个体之间（小和中Clambda = 0.94；小和大Clambda = 0.74；中和大Clambda = 0.83）的营养重叠度较高。
