Praxedes Rayran Araújo, Rabelo Emanuelle Fontenelle, Cavalcanti Thaynã, Brandão Simone Nunes, Pinheiro Ulisses, Albuquerque Cristiano Queiroz DE
Universidade Estadual de Santa Cruz (UESC); Departamento de Ciências Biológicas (DCB); Programa de Pós-Graduação em Zoologia (PPGZOO); Ilhéus; BA; Brazil; Universidade Federal Rural do Semi-Árido (UFERSA); Centro de Ciências Biológicas e da Saúde (CCBS); Mossoró; RN; Brazil.
Universidade Federal Rural do Semi-Árido (UFERSA); Centro de Ciências Biológicas e da Saúde (CCBS); Mossoró; RN; Brazil.
Zootaxa. 2024 Jun 6;5463(3):339-359. doi: 10.11646/zootaxa.5463.3.2.
The Brazilian spongiofauna is still one of the least known worldwide, and the Northeastern region of Brazil is the one with the greatest recorded diversity. Previous studies on sponges in the Rio Grande do Norte State focused on deeper regions of the Potiguar Basin and oceanic islands, lacking any records from intertidal environments. The present study aimed to investigate the biodiversity of marine sponges from two beaches on the northern coast of Rio Grande do Norte. The specimens were collected in intertidal beachrocks of Baixa Grande and Ponta do Mel beaches (Areia Branca, RN) quarterly between August 2018 and May 2019, using the active search method for 2 hours during low tide. We identified 19 species belonging to the Demospongiae class, four taxa were considered dominant and six were considered rare according to the sampling period. Our study considerably improved the knowledge of the spongiofauna for the Rio Grande do Norte State, with six new taxa occurrences: Placospongia sp., Dysidea robusta, Haliclona (Reniera) manglaris, Haliclona (Reniera) tubifera, Haliclona (Soestella) caerulea and Amorphinopsis atlantica.
巴西的海绵动物区系在全球范围内仍是最鲜为人知的之一，而巴西东北部地区是记录到的多样性最高的地区。此前对北里奥格兰德州海绵的研究集中在波蒂瓜尔盆地的较深区域和海洋岛屿，缺乏潮间带环境的任何记录。本研究旨在调查北里奥格兰德河北部海岸两个海滩的海洋海绵生物多样性。2018年8月至2019年5月期间，每季度在大拜沙海滩和梅尔角海滩（阿雷亚布兰卡，北里奥格兰德州）的潮间带海滩岩中采集标本，在退潮时采用主动搜索法采集2小时。我们鉴定出19种属于寻常海绵纲的物种，根据采样期，4个分类单元被认为是优势种，6个被认为是稀有种。我们的研究大大提高了对北里奥格兰德州海绵动物区系的认识，有6个新分类单元出现：扁海绵属物种、粗壮皮海绵、红树林海克隆（雷尼海绵属）、管状海克隆（雷尼海绵属）、蓝色海克隆（索斯特拉海绵属）和大西洋无定形海绵。
