Arthropods: Crustacea – Ostracoda and Amphpoda
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Pancrustacean phylogeny: hexapods are terrestrial crustaceans and maxillopods are not monophyletic.
Recent molecular analyses indicate that crustaceans and hexapods form a clade (Pancrustacea or Tetraconata), but relationships among its constituent lineages, including monophyly of crustaceans, are controversial. Our phylogenetic analysis of three protein-coding nuclear genes from 62 arthropods and lobopods (Onychophora and Tardigrada) demonstrates that Hexapoda is most closely related to the ...
متن کاملDescription of a species of Fabaeformiscandona (Ostracoda, Crustacea) from Kushiro Marsh, Hokkaido, Japan, with the nearly complete mitochondrial genomic sequence
BACKGROUND So far, 16 species of non-marine ostracods have been reported from Kushiro Marsh, Kushiro Shitsugen National Park, eastern Hokkaido, Japan (Hiruta and Smith 2001, Smith and Hiruta 2004). Nine of these species are in Candonidae, the second-most diverse family of non-marine ostracods. This family contains ca. 550 species, or around 25% of the total number of non-marine ostracod species...
متن کاملبررسی زیستگاه و شناسایی گونه های شاخص استراکد (Crustacea: Ostracoda) جنوب شرقی دریای خزر
زره داران از رده سخت پوستان بوده که از خط ساحلی تا عمق حدود 2800 متری ساکن هستند. این موجودات غالبا در مناطقی نظیر دریاچه ها، چشمه ها، رودها، باتلاق ها، تالابها، دریاها و اقیانوس ها سکونت دارند. با توجه به این که، این موجودات در تمام زیست بوم های آب شیرین، لب شور و دریایی به سر می برند طبیعی است که به صورت فسیل در تمام مناطق ذکر شده، یافت شوند. زره داران در اکولوژی دیرین (paleoecology) اهمیت بس...
متن کاملOn homology of arthropod compound eyes.
Eyes serve as models to understand the evolution of complex traits, with broad implications for the origins of evolutionary novelty. Discussions of eye evolution are relevant at many taxonomic levels, especially within arthropods where compound eye distribution is perplexing. Either compound eyes were lost numerous times or very similar eyes evolved separately in multiple lineages. Arthropod co...
متن کاملOn Homology of Arthropod Compound Eyes1
SYNOPSIS. Eyes serve as models to understand the evolution of complex traits, with broad implications for the origins of evolutionary novelty. Discussions of eye evolution are relevant at many taxonomic levels, especially within arthropods where compound eye distribution is perplexing. Either compound eyes were lost numerous times or very similar eyes evolved separately in multiple lineages. Ar...
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