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The emergence of lobsters: phylogenetic relationships, morphological evolution and divergence time comparisons of an ancient group (decapoda: achelata, astacidea, glypheidea, polychelida).
TLDR
This study estimated phylogenetic relationships among the major groups of all lobster families and 94% of the genera using six genes (mitochondrial and nuclear) and 195 morphological characters across 173 species of lobsters for the most comprehensive sampling to date.
Molecular phylogeny of the American Callinectes Stimpson, 1860 (Brachyura: Portunidae), based on two partial mitochondrial genes
TLDR
Analysis of mtDNA regions corresponding to 964 basepairs of the large (16S) and small (12S) ribosomal subunits among American Callinectes in order to examine phylogenetic relationships suggests that C. ornatus is the closest relative of C. arcuatus, and C. affinis is closest to C. bocourti.
Molecular data resolve placement of the Olympic marmot and estimate dates of trans-Beringian interchange
TLDR
The phylogeny of all 15 species of Marmota is reinvestigated to resolve a conflict between 2 published analyses, and all analyses indicate that M. olympus is a much older, rather than more recent, offshoot of the widespread hoary marmot or Vancouver Island marmot.
Lack of divergence between 16S mtDNA sequences of the swimming crabs Callinectes bocourti and C. maracaiboensis (Brachyura: Portunidae) from Venezuela*
TLDR
Understanding of their distribution, abundance, and population dynamics, and lack of divergence between 16S mtDNA sequences of the swimming crabs Callinectes bocourti and C. maracaiboensis from Venezuela are hampered.
Oxygen consumption of the crab Callinectes rathbunae parasitized by the rhizocephalan barnacle Loxothylacus texanus as a function of salinity
TLDR
Hosts bearing mature parasites may move within the estuaries from low to high salinity areas in order to reduce the meta- bolic energy expenditure caused by the combination of the parasite and hypoosmotic conditions.
Molecular phylogenetics of American snapping shrimps allied to Alpheus floridanus Kingsley, 1878 (Crustacea: Decapoda: Alpheidae).
TLDR
Molecular phylogenetic relationships between members of the A. floridanus complex can be reconciled with postulated biogeographic history and early-branching lineages within the complex are identified.
Parasitization of Callinectes rathbunae and Callinectes sapidus by the Rhizocephalan Barnacle Loxothylacus texanus in Alvarado Lagoon, Veracruz, Mexico
TLDR
A study of infection revealed significant variation in prevalence and host size throughout the study period and the sex ratio of parasitized crabs differed from that of the total sample with mares being parasitized more often, and the comparison of carapace width-weight relationships revealed Lower weights OF Parasitized crabs.
Molecular phylogeny of the western Atlantic species of the genus Portunus (Crustacea, Brachyura, Portunidae)
TLDR
It appears that the genus Portunus is not monophyletic and that it warrants further taxonomic revision, and it appears that western Atlantic members of the genus can be subdivided into at least three well-defined clades.
A new classification of Callianassidae and related families (Crustacea: Decapoda: Axiidea) derived from a molecular phylogeny with morphological support
TLDR
The classification of the families and genera of Callianassidae and related families is significantly revised based on the results of a separately published molecular phylogeny with morphological support.
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