1,386 research outputs found
New family of deep-sea planktonic copepods, the Paralubbockiidae (Copepoda: Poecilostomatoida)
The deep-sea planktonic copepod Paralubbockia longipedia is redescribed from the type specimens, and a new family of Poecilostomatoida is proposed to accommodate it. The Paralubbockiidae fam. nov. is characterized by two unique plesiomorphies, the ventrally located fifth legs and the retention of a separate maxillulary palp, and by the apomorphic states of the endopods of the swimming legs and of the antenna. The sister group of the Paralubbockiidae is identified as the family Oncaeidae. These are the only two poecilostomatoid families that have retained a vestige of the geniculation mechanism in the antennules of the male. The genus Laitmatobius Humes is here regarded as incertae sedis within the lineage comprising the Oncaeidae and the Parulubbockiidae
Misophriopsis okinawensis sp. nov. (Crustacea: Copepoda) from Hyperbenthic Waters off Okinawa, South Japan, with Definitions of Related Genera Misophria Boeck, 1864 and Stygomisophria gen. nov.
A new misophrioid copepod Misophriopsis okinawensis (Crustacea) is reported from Kume Island, Okinawa, South Japan. A full description of the new misophrioid is presented, together with supplementary notes on the males of Misophria pallida Boeck, 1864. Consideration of the phylogeny of the new species led to a reassessment of the affinities between all the named species of Misophria Boeck, 1864 and Misophriopsis Boxshall, 1983. A new genus, Stygomisophira, is recognised based on Misophria kororiensis Boxshall et Iliffe, 1987. Diagnoses are presented of all three genera
Rare parasitic copepods (Siphonostomatoida: Lernanthropidae) from Egyptian Red Sea fishes
© The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The attached file is the published version of the article
Parasitic copepods from Egyptian Red Sea fishes: Bomolochidae Claus, 1875
© The Author(s) 2015
Open Access - This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The attached file is the published version of the article
An evaluation of Sea Search as a citizen science programme in Marine Protected Areas
Citizen science involves collaboration between multi-sector agencies and the public to address a natural resource management issue. The Sea Search citizen science programme involves community groups in monitoring and collecting subtidal rocky reef and intertidal rocky shore data in Victorian Marine Protected Areas (MPAs), Australia. In this study we compared volunteer and scientifically collected data and the volunteer motivation for participation in the Sea Search programme. Intertidal rocky shore volunteer-collected data was found to be typically comparable to data collected by scientists for species richness and diversity measures. For subtidal monitoring there was also no significant difference for species richness recorded by scientists and volunteers. However, low statistical power suggest only large changes could be detected due to reduced data replication. Generally volunteers recorded lower species diversity for biological groups compared to scientists, albeit not significant. Species abundance measures for algae species were significantly different between volunteers and scientists. These results suggest difficulty in identification and abundance measurements by volunteers and the need for additional training requirements necessary for surveying algae assemblages. The subtidal monitoring results also highlight the difficulties of collecting data in exposed rocky reef habitats with weather conditions and volunteer diver availability constraining sampling effort. The prime motivation for volunteer participation in Sea Search was to assist with scientific research followed closely by wanting to work close to nature. This study revealed two important themes for volunteer engagement in Sea Search: 1) volunteer training and participation and, 2) usability of volunteer collected data for MPA managers. Volunteer-collected data through the Sea Search citizen science programme has the potential to provide useable data to assist in informed management practices of Victoria’s MPAs, but requires the support and commitment from all partners involved.<br /
Improvements to the "sket bottle": a simple manual device for sampling small crustaceans from marine caves and other cryptic habitats
Dark littoral submarine caves can act as enclaves of the deep aphotic zone in shallow coastal areas, and their survey has revealed the existence of a very particular fauna of specialized and poorly known organisms among which crustaceans are particularly well represented. In these particular habitats, the use of conventional sampling techniques, such as hand nets, is often not recommended since they disturb bottom sediments causing hazardous situations to scientific divers. The use of baited traps, while technically possible, is not. always practical is such remote habitats. The present work describes a simple and inexpensive manual device that can be operated by divers ill submarine caves and other cryptic habitats to recurrently catch small motile organisms such as mysid crustaceans, caridean shrimps, or even gobiid fishes. This small suction bottle derived and improved from the original "Sket bottle" design considerably reduces the risks of disturbing the cave's bottom sediment and can be easily operated using a single hand. The described sampling device can also be easily used outside caves, in a variety of particular habitats, e.g., rubble filled bottoms, branching coral reefs, cracks, and small holes on rocky surfaces, in which small motile organisms usually escape from traditional sampling gears, e.g., fishnets and traps, or simply go unnoticed by researchers during sampling.info:eu-repo/semantics/publishedVersio
Global coordination and standardisation in marine biodiversity through the World Register of Marine Species (WoRMS) and related databases
The World Register of Marine Species is an over 90% complete open-access inventory of all marine species names. Here we illustrate the scale of the problems with species names, synonyms, and their classification, and describe how WoRMS publishes online quality assured information on marine species.Within WoRMS, over 100 global, 12 regional and 4 thematic species databases are integrated with a common taxonomy. Over 240 editors from 133 institutions and 31 countries manage the content. To avoid duplication of effort, content is exchanged with 10 external databases. At present WoRMS contains 460,000 taxonomic names (from Kingdom to subspecies), 368,000 species level combinations of which 215,000 are currently accepted marine species names, and 26,000 related but non-marine species. Associated information includes 150,000 literature sources, 20,000 images, and locations of 44,000 specimens. Usage has grown linearly since its launch in 2007, with about 600,000 unique visitors to the website in 2011, and at least 90 organisations from 12 countries using WoRMS for their data management.By providing easy access to expert-validated content, WoRMS improves quality control in the use of species names, with consequent benefits to taxonomy, ecology, conservation and marine biodiversity research and management. The service manages information on species names that would otherwise be overly costly for individuals, and thus minimises errors in the application of nomenclature standards. WoRMS' content is expanding to include host-parasite relationships, additional literature sources, locations of specimens, images, distribution range, ecological, and biological data. Species are being categorised as introduced (alien, invasive), of conservation importance, and on other attributes. These developments have a multiplier effect on its potential as a resource for biodiversity research and management. As a consequence of WoRMS, we are witnessing improved communication within the scientific community, and anticipate increased taxonomic efficiency and quality control in marine biodiversity research and management
The Rapid Assessment Workshops to elicit expert input to inform the development of the Great Barrier Reef Outlook Report 2024
The Great Barrier Reef Marine Park Authority (the Reef Authority) convened the rapid assessment workshops in Townsville from 7 to 11 August 2023. The workshops obtained independent expert judgements on the condition, trends, and risks to the Great Barrier Reef Region’s Indigenous cultural values, historic heritage, biodiversity, and ecosystem health. The outputs informed the Great Barrier Reef Outlook Report 2024, augmenting other lines of evidence, including consultation with Reef Authority experts, research papers, and information sent by internal and external experts
Comparison of ATP simulation and micro‐processor based fault location using DFT
This paper evaluates the results of a microprocessor based fault locator employed on a laboratory power system model with those obtained within EMTP/ATP simulations. The Discrete Fourier Transform concept is used to extract the fundamental frequency components of the voltage and current waveforms under fault and the reactance based method to locate the fault. The results suggest a close correlation between the experimental and simulation studies for all fault types
- …
