Zootaxa
Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, Joel Montes Camarena s/n, Mazatlán, 82040, Sinaloa, México..
Published: September 2022
Here we present some hypothetical phylogenetic relationships and the evolutionary history of the harpacticoid copepod genus Tigriopus Norman, 1869 using morphological data. Cladistic analyses were performed with 21 morphological characters, including 15 ingroup and eight outgroup species. Inferred topology from Bayesian inference supported the monophyletic status of the genus, and revealed two main evolutionary lineages. One of these lineages (the brachydactylus-iagi lineage) comprises species from the Indo-Pacific, the northern Pacific, the southern Pacific, and the southern Atlantic; it is supported by the tetrasetose female P5 endopod. The fulvus-angulatus lineage is composed of three clusters with species from the north Atlantic and the Mediterranean Sea (the fulvus-brevicornis clade), the northwestern Pacific and the Indo-Pacific (the japonicus-sirindhoranae clade), and from the southern Pacific, the Indian Ocean, and the Southern Ocean (the crozettensis-angulatus clade). The groundpattern of the mandibular basis of the fulvus-angulatus lineage seems to include a bisetose mandibular basis, and, the presence of three setae on this segment in the japonicus-sirindhoranae clade is interpreted here as a character reversal. Biogeographic analyses suggest that the tropical Indo-Pacific region is the most probable ancestral area of the genus that diversified through vicariance events.
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http://dx.doi.org/10.11646/zootaxa.5188.4.5 | DOI Listing |
Mol Biol Evol
January 2025
Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France.
The pangenome of a species is the set of all genes carried by at least one member of the species. In bacteria, pangenomes can be much larger than the set of genes carried by a single organism. Many questions remain unanswered regarding the evolutionary forces shaping the patterns of presence/absence of genes in pangenomes of a given species.
View Article and Find Full Text PDFPlant Divers
November 2024
College of Urban and Environmental Sciences, MOE Key Laboratory of Earth Surface Processes, Peking University, Beijing 100871, China.
Grasslands account for about a quarter of the Earth's land area and are one of the major terrestrial ecosystems, with significant ecological and economic values. The influence of environmental factors and management types on grassland biodiversity has garnered considerable attention. This study investigated how patterns of species richness are influenced by geographical distance, environmental gradients, and management type in the moist mountain grasslands of northeastern Yunnan, China.
View Article and Find Full Text PDFPlant Divers
November 2024
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
Leaf nitrogen (N) and phosphorus (P) levels provide critical strategies for plant adaptions to changing environments. However, it is unclear whether leaf N and P levels of different plant functional groups (e.g.
View Article and Find Full Text PDFPlant Divers
November 2024
CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization and Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
The Indo-Burma Biodiversity Hotspot is renowned for its rich biodiversity, including that of vascular plants. However, the fern diversity and its endemism in this hotspot have not been well understood and so far, the diversity of very few groups of ferns in this region has been explored using combined molecular and morphological approaches. Here, we updated the plastid phylogeny of the Java fern genus with 226 (115% increase of the latest sampling) samples across the distribution range, specifically those of three phylogenetically significant species, , .
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November 2024
Germplasm Bank of Wild Species & Yunnan Key Laboratory of Crop Wild Relatives Omics, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
The angiosperm family Elaeagnaceae comprises three genera and . 100 species distributed mainly in Eurasia and North America. Little family-wide phylogenetic and biogeographic research on Elaeagnaceae has been conducted, limiting the application and preservation of natural genetic resources.
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