海绵物种特征和形态决定了加勒比海海绵栖息虾虎鱼(Elacatinus horsti)的栖息模式

IF 1.4 4区 环境科学与生态学 Q3 ECOLOGY
Taylor Naaykens, Hana Fahim, Cassidy C. D’Aloia
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引用次数: 0

摘要

由于珊瑚礁受到干扰导致的相位变化,海绵成为珊瑚礁栖息生物日益重要的微生境,尤其是在整个加勒比海地区。海绵栖息物种的丰度预计会受到其栖息地专业化程度以及潜在寄主海绵的分布和形态的严重影响。我们沿库拉索岛的边缘礁进行了调查,以检验寄主海绵群落的组成和形态如何驱动黄线鰕虎鱼(Elacatinus horsti)的栖息模式。黄线鰕虎鱼占据的海绵群落在全岛范围内各不相同,代表了调查地点栖息地的异质性。我们发现黄线鰕虎鱼是一种海绵通食动物,通常占据三种海绵:Aplysina lacunosa、Aplysina archeri 和 Neofibularia nolitangere,尽管所有寄主物种都有一些未被占据的海绵。与海绵总体大小有关的一个变量--海绵最大高度--显著影响了鰕虎鱼占据海绵的可能性。鰕虎鱼在海绵中的群体大小也受海绵最大高度、蛛网数量和寄主海绵种类的影响。具体来说,在开口较多的大型海绵中,鰕虎鱼群体的规模更大;在考虑寄主形态的情况下,有毒海绵 N. nolitangere 寄主的鰕虎鱼群体估计是其他海绵中鰕虎鱼群体的 2.6-9.0 倍。因此,对于这些定点附着的鱼类来说,不同宿主之间的同种相互作用机会是不同的。总之,我们的研究结果为今后研究不同寄主物种的生态权衡和适应性后果以及研究鱼类与海绵共生的性质奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Sponge species identity and morphology shape occupancy patterns of a Caribbean sponge-dwelling goby (Elacatinus horsti)

Sponge species identity and morphology shape occupancy patterns of a Caribbean sponge-dwelling goby (Elacatinus horsti)

Due to disturbance-driven phase shifts on coral reefs, sponges are an increasingly important microhabitat for reef-dwelling organisms, particularly throughout the Caribbean. The abundance of sponge-dwelling species is expected to be heavily influenced by their degree of habitat specialization, as well as the distribution and morphology of potential host sponges. We conducted surveys along the fringing reefs of Curaçao to test how host sponge community composition and morphology drive occupancy patterns of the yellowline goby (Elacatinus horsti). The assemblage of goby-occupied sponges varied across the island, representing habitat heterogeneity across surveyed sites. We found E. horsti to be a sponge generalist, commonly occupying three species: Aplysina lacunosa, Aplysina archeri, and Neofibularia nolitangere, though all host species had some unoccupied sponges. A variable related to overall sponge size—maximum sponge height—significantly influenced the likelihood of goby occupancy. Goby group size in a sponge was also influenced by maximum sponge height along with the number of oscula and the species of host sponge. Specifically, group sizes were bigger in larger sponges with more openings, and the noxious sponge N. nolitangere hosted groups that were estimated to be 2.6–9.0 times larger than groups in other sponges when accounting for host morphology. Therefore, for these site-attached fish, the opportunity for conspecific interactions varies across different hosts. Collectively, our findings lay the groundwork for future investigations into the ecological trade-offs and fitness consequences of occupying distinct host species and examining the nature of fish-sponge symbioses.

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来源期刊
Environmental Biology of Fishes
Environmental Biology of Fishes 环境科学-海洋与淡水生物学
CiteScore
2.60
自引率
14.30%
发文量
169
审稿时长
3 months
期刊介绍: Environmental Biology of Fishes is an international journal that publishes original studies on the ecology, life history, epigenetics, behavior, physiology, morphology, systematics and evolution of marine and freshwater fishes. Empirical and theoretical papers are published that deal with the relationship between fishes and their external and internal environment, whether natural or unnatural. The journal concentrates on papers that advance the scholarly understanding of life and draw on a variety of disciplines in reaching this understanding. Environmental Biology of Fishes publishes original papers, review papers, brief communications, editorials, book reviews and special issues. Descriptions and submission requirements of these article types can be found in the Instructions for Authors.
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