01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Resultados da Pesquisa
Item Levantamento e caracterização dos macroinvertebrados bentônicos do naufrágio Pirapama (PE)(2022-10-07) Bezerra, Natanael Cicero Cavalcanti; Amaral, Fernanda Maria Duarte do; Santos, José Carlos Pacheco dos; http://lattes.cnpq.br/2185193566880590; http://lattes.cnpq.br/7026011892824176; http://lattes.cnpq.br/6395940424269126Coral reefs have great biodiversity, serving as a shelter, nursery and feeding place for several species of vertebrates and invertebrates. As with natural reefs, the consolidated artificial substrate character gives these structures the ability to recruit larvae from the most diverse marine organisms. For this reason, these artificial ecosystems have been described as facilitating the arrival of exotic species to the coast. Thus, the objective was to carry out a survey and characterization of the benthic macroinvertebrate community of the centenary Naufrágio Pirapama, seeking to classify it according to its occurrence status, geographic distribution and trophic groups, as well as to compare these data with the results published ten years ago in similar research on the same shipwreck, allowing a temporal evaluation of this community. The entire structure of the wreck was observed through scuba diving, and sessile and sedentary macroinvertebrates were recorded with the aid of underwater cameras, pencils and PVC plates. All individuals were photographed and/or filmed in as much detail as possible, with all data being recorded in situ for their classification and location in the wreck. Minimal collections were performed with the aid of a hammer, chisel, Zip Lock plastic bags, nylon clamps and conditioned in 70% or 95% alcohol. In the laboratory, all fauna was identified at the lowest possible taxonomic level, with the help of microscopes, specialists and pertinent bibliography, and all species characterization was done through specific academic literature. In total, 44 taxa distributed among the phyla Cnidaria, Echinodermata, Annelida, Porifera, Arthropoda, Chordata, Mollusca and Bryozoa were identified. Compared to the 2010 survey, of the 76 taxa, 31 of them were not registered, but, on the other hand, there were 12 new ones for the shipwreck. Currently, three trophic groups were observed (Suspensivores, Detritivores and Carnivores), while for the previous check-list, in addition to these, the Herbivore and Omnivore groups were recorded. For both periods, the Filtered suspensivores showed a predominance greater than 80%. Regarding its status, the evaluated community showed a predominance of cryptogenic and native species from 2010 to the present, with only three non-invasive exotic species: the octocoral Carijoa riisei, the red lobster Panulirus argus and the barnacle Balanus trigonus. All organisms currently observed in the Pirapama wreck are commonly reported from the Brazilian coast and Pernambuco coast, making the benthic macroinvertebrate community of the studied artificial reef very similar to those observed in coastal reef environments.Item Diversidade da comunidade associada à Carijoa riisei em naufrágios de diferentes profundidades em Pernambuco(2019-12-10) Oliveira, Camilla Silva de; Gomes, Paula Braga; http://lattes.cnpq.br/3289333472399959; http://lattes.cnpq.br/7484128728382844The octocoral Carijoa riisei is distributed in the Western Atlantic Ocean, Pacific, Caribbean and most recently in Mexico, it can be found at depths of more than 30 meters, including in Pernambuco shipwrecks. This species has an arborescent estolonial structure that provides a favorable environment for the development of various organisms, among which are macroinvertebrates, organisms of utmost importance for ecosystem processes. This work aims to investigate if the difference in depth between Pernambuco shipwrecks influences the fauna composition associated with C. riisei. The octocoral samples were collected in four Pernambuco shipwrecks located in the Pernambuco Artificial Shipwreck Park, in Recife, with different depths (between 20 and 30 meters), during the dry (December) and rainy (July) seasons of 2018, using SCUBA equipment. Later, in the laboratory, the colonies passed by washing processes and the macrofauna was retained in a 250 μm sieve, sorted, counted and identified to the smallest possible taxonomic group. In total, 3143 individuals associated with C. riisei were collected, distributed in 52 taxa. The Amphipoda and Polychaeta groups were the most representative in all shipwrecks, with a relative abundance of 66% (dominant taxon) and 22% (slightly rare taxon), respectively. The Taurus shipwreck had a higher species richness associated with the octocoral colonies than the other shipwrecks, especially during the rainy season. The composition of the associated fauna was different among the shipwrecks, but the difference in depth between the shipwrecks was not relevant for this differentiation. Therefore, other abiotic factors may have been responsible for this difference in species richness and composition among shipwrecks.