The pelagic nemertean nectonemertes
نویسندگان
چکیده
منابع مشابه
Nemertean Toxin Genes Revealed through Transcriptome Sequencing
Nemerteans are one of few animal groups that have evolved the ability to utilize toxins for both defense and subduing prey, but little is known about specific nemertean toxins. In particular, no study has identified specific toxin genes even though peptide toxins are known from some nemertean species. Information about toxin genes is needed to better understand evolution of toxins across animal...
متن کاملVestigial prototroch in a basal nemertean, Carinoma tremaphoros (Nemertea; Palaeonemertea).
Nemerteans have been alleged to belong to a protostome clade called the Trochozoa that includes mollusks, annelids, sipunculids, echiurids, and kamptozoans and is characterized by, among other things, the trochophore larva. The trochophore possesses a prototroch, a preoral belt of specialized ciliary cells, derived from the trochoblast cells. Nemertea is the only trochozoan phylum for which pre...
متن کاملPelagic Ecosystems
T he measurement of primary production in the ocean is key to our estimates of ecosystem function and the role of the ocean and its biota in the planetary carbon (C) cycle. Accurate estimates are critical to a broad suite ofbiological questions across a wide range of space and time scales. The methods developed to measure primary production reflect the diversity of our research interests and en...
متن کاملDeep pelagic biology
The deep pelagic habitat is a vast volume of cold, dark water where food is scarce and bioluminescence is the principal source of light and communication. Understanding the adaptations that allow animals to successfully inhabit this daunting realm has been a difficult challenge because investigators have had to conduct their work remotely. Research in the deep water column is going through an e...
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ژورنال
عنوان ژورنال: Journal of Morphology
سال: 1920
ISSN: 0362-2525,1097-4687
DOI: 10.1002/jmor.1050340302