Article
Zoology
Jordan Tuparai Talhaferro, Alessandra Angelica de Padua Bueno, Mateus Marques Pires, Cristina Stenert, Leonardo Maltchik, Carla Bender Kotzian
Summary: This study describes three new species of Hyalella collected in wetlands in the southern Brazilian Coastal Plain. Each species has distinct characteristics and distribution locations. The new records increase the diversity of Hyalella species in Brazil to 33 and in the Americas to 83.
Article
Genetics & Heredity
Francesco Zapelloni, Jose A. Jurado-Rivera, Damia Jaume, Carlos Juan, Joan Pons
Summary: The study conducted sequencing and comparative analysis on 17 mitochondrial genomes of Hyalella amphipods, revealing gene rearrangement between North and South American populations, as well as the AT-richness and strong nucleotide bias in the genomes. Additionally, the study found a preference for AT-rich codons in the protein-coding sequences and identified numerous base changes in tRNA.
Article
Zoology
Jordan Tuparai Talhaferro, Mateus Marques Pires, Cristina Stenert, Leonardo Maltchik, Alessandra Angelica de Padua Bueno, Carla Bender Kotzian
Summary: This study investigated the diversity and distribution of Hyalella species in subtropical temporary wetlands in the southern Brazilian Coastal Plain. Six species were recorded, including three new species. The study found that the hydrographic region is an important driver of the geographic distribution of the species. The study also expanded the distribution ranges of several species and provided a taxonomic key for Hyalella species in southern Brazil.
STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT
(2023)
Article
Biodiversity Conservation
Marcos A. Raposo, Guy M. Kirwan, Ana Carolina Calijorne Lourenco, Gisela Sobral, Flavio Alicino Bockmann, Renata Stopiglia
Summary: This article examines the increasingly prevalent taxonomic notions of 'impediment', 'gap', 'inflation' and 'anarchy' in discussions of the global biodiversity crisis, highlighting a philosophical deficiency in the comprehension of taxonomic principles. The importance of constructing a theoretical bridge between taxonomy and conservation biology is emphasized, along with the need for refining concepts surrounding diversity estimates and species extinction in a fluid world of knowledge.
SYSTEMATICS AND BIODIVERSITY
(2021)
Article
Zoology
Mrcio Limberger, Sandro Santos, Daniela Da Silva Castiglioni
Summary: This study describes a new species of freshwater amphipod in the Varzea River basin in southern Brazil, and compares it with previously discovered species. The diversity of freshwater amphipods in this region is intriguing, and further research can help uncover the evolutionary history and patterns of diversification of the genus Hyalella.
Article
Zoology
Rebeca Gasca, Michel E. Hendrickx
Summary: A deep water survey off western Mexico collected thirteen species of pelagic amphipods belonging to five genera of the family Lestrigonidae, representing 93% of all known species worldwide. Despite heterogeneous sampling methodology, two species, Hyperioides sibaginis and Lestrigonus bengalensis, were particularly abundant, comprising 82% of the total catch. The southernmost distribution limit of Hyperietta stebbingi was extended to off southwestern Mexico, with 10 and 8 species co-occurring at two sampling localities in the southeastern Gulf of California.
Article
Multidisciplinary Sciences
Tiziana Di Lorenzo, Ana Sofia P. S. Reboleira
Summary: The study found that Proasellus lusitanicus has low thermal plasticity in a fast-increasing thermal regime, and its oxygen consumption rates do not exhibit the commonly observed 0.75 scaling factor with body mass in other animals.
SCIENTIFIC REPORTS
(2022)
Article
Zoology
Rebeca Gasca, Michel E. Hendrickx
Summary: This study collected 12 species of the Oxycephalidae family during a deep-water survey off western Mexico. The most common species were Oxycephalus clausi and Rhabdosoma whitei. The results of the study indicate that the majority of the described species of Oxycephalidae have been reported in western Mexico.
Article
Biodiversity Conservation
Jani Jarquin-Gonzalez, Martha Valdez-Moreno, Rigoberto Rosas-Luis
Summary: This study analyzed the biological diversity of decapods in the Southern Mexican Caribbean, identifying 29 families, 67 genera, and 98 species. The findings contribute to the understanding of marine and coastal invertebrate populations in this region.
Article
Evolutionary Biology
Simeao de Souza Moraes, Leidys Murillo-Ramos, Patricia A. Machado, Hamid R. Ghanavi, Luiza M. Magaldi, Karina L. Silva-Brandao, Massuo J. Kato, Andre V. L. Freitas, Niklas Wahlberg
Summary: The genus Eois is hyperdiverse and potentially includes many undescribed cryptic species, with the actual diversity being greatly underestimated. This study compares three species delimitation methods and suggests a potential increase in valid species number. Cryptic diversity is supported by morphological characters, and a standardized approach is advocated for future studies to minimize biases and maximize replicability.
Article
Zoology
Rebeca Gasca, Michel E. Hendrickx
Summary: This study reports on ten species belonging to the families Paraphronimidae and Vibiliidae collected during a deep-water survey off western Mexico, representing about 40% of all known species of these two genera worldwide. Vibilia armata was the most frequently and abundantly collected species in the samples, being found in 32 localities and accounting for 67% of the total specimens.
Article
Ecology
Nicolas F. St-Gelais, Paul A. del Giorgio, Beatrix E. Beisner
Summary: This study examined the effects of functional traits and diversity on crustacean zooplankton productivity in 84 Canadian lakes. The study found that zooplankton production rates were positively linked to dominance by specific feeding traits (Daphnia filtration and Chydorus filtration) with lower functional evenness. After accounting for environmental factors, the effect of functional composition on production was comparable to the aggregate effect of environmental variables. Therefore, the functional community structure of zooplankton plays an important role in regulating a pivotal lake ecosystem function.
FRESHWATER BIOLOGY
(2023)
Article
Neurosciences
Katja Kuemmerlen, Sophie Raspe, Steffen Harzsch
Summary: In mandibulate arthropods, the olfactory centers known as olfactory lobes are organized in dense synaptic neuropils called olfactory glomeruli. However, the functional morphology of olfactory glomeruli in crustaceans, especially in the subgroup Peracarida, remains unclear. In this study, we used immunohistochemistry and confocal laser scanning microscopy to analyze the neurochemistry of the olfactory pathway in the amphipod Parhyale hawaiensis. Our findings provide insights into the olfactory processing in crustaceans and contribute to understanding the evolutionary transformations of crustacean olfactory systems.
JOURNAL OF COMPARATIVE NEUROLOGY
(2023)
Article
Biodiversity Conservation
Michael R. Willig, Steven J. Presley, Brian T. Klingbeil, Evsey Kosman, Tao Zhang, Samuel M. Scheiner
Summary: A key element of conservation action involves the incorporation of sites into networks of protected areas. Historically, most network-creation strategies have been based on considerations of species richness and site complementarity. Nonetheless, phylogenetic or functional biodiversity may be more critical to the maintenance of ecosystem resilience or functioning than is the number of species.
BIOLOGICAL CONSERVATION
(2023)
Article
Multidisciplinary Sciences
Monica R. Young, Jeremy R. deWaard, Paul D. N. Hebert
Summary: Mites are abundant in terrestrial and freshwater ecosystems, but their diversity is poorly understood. The Barcode Index Number (BIN) system helps facilitate large-scale surveys by distinguishing mite species based on variation in the DNA barcode region. The Barcode of Life Datasystem's identification engine (BOLD ID) generally delivers correct ordinal and family assignments for mites, with identification success improving with sequence length and taxon coverage.
SCIENTIFIC REPORTS
(2021)
