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2 edition of morphology, reproduction, and ecology of Colorado species of Chaetogaster (Oligochaeta, Annelida) found in the catalog.

morphology, reproduction, and ecology of Colorado species of Chaetogaster (Oligochaeta, Annelida)

Donald Lee Elrick

morphology, reproduction, and ecology of Colorado species of Chaetogaster (Oligochaeta, Annelida)

by Donald Lee Elrick

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  • 34 Currently reading

Published by Xerox University Microfilms in Ann Arbor, Mich .
Written in English

    Subjects:
  • Oligochaeta.

  • Edition Notes

    Statementby Donald Lee Elrick.
    The Physical Object
    Paginationxix, 311 leaves :
    Number of Pages311
    ID Numbers
    Open LibraryOL20758873M

    Life history variation of common mullein (Verbascum thapsus) I. Latitudinal differences in population dynamics and timing of reproduction. Journal of Ecology. 72(3): [] Reinartz, James A. Life history variation of common mullein (Verbascum thapsus) II. Plant size, biomass partitioning and morphology. Journal of Ecology. Evolution and ecology of palms. [Andrew Henderson] major groups 41 --Frequency distributions of stem size 44 --Habitat 47 --Stems in the Euterpe Clade 49 Leaves 55 --Morphology and Arrangement of Leaves 55 --Leaf morphology 55 --Leaf sheaths 58 --Leaf morphology and stem size Costa Rica --Attalea butyracea on Barro Colorado.

    Understanding fish ecology is both exciting and challenging. Fishes have the greatest diversity among the craniate organisms, composing more than half of all extant species, with an estima species of fishes worldwide (Nelson ), and with the descriptions of “new” (newly documented) species continuing at approximately species per year (Eschmeyer ). The accumulation of live and dead trees and other vegetation in forests across the western United States is producing larger and more severe wildfires. To decrease wildfire severity and increase forest resilience, foresters regularly remove excess fuel by burning woody material in piles. This common practice could also cause persistent ecosystem changes such as the alteration of soil physical.

    Here I study species of frogs from around the world that inhabit different microhabitats, using models of phenotypic evolution to examine how form-function relationships may explain the fit between ecology and morphology. I found three key results. First, despite being distinct in leg morphology, ecomorphs were similar in jumping performance. Psychotria cephalophora Merr. (Rubiaceae), a shrub in oceanic islands of Taiwan and the Philippines, appears to be distylous, but distyly is usually rare on oceanic islands. To elucidate the functional breeding system of P. cephalophora can improve our understanding of plant reproductive ecology on oceanic islands. Field investigations on Lanyu (Orchid Island) off the coast of southeastern.


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Morphology, reproduction, and ecology of Colorado species of Chaetogaster (Oligochaeta, Annelida) by Donald Lee Elrick Download PDF EPUB FB2

Chaetogaster is a genus belonging to the segmented worms ().It is classified in the family Naididae (subfamily Naidinae) in the order are ca. 2–25 mm long transparent worms that are very common in fresh water and often form chains of individuals through asexual : Oligochaeta. Abstract.

Feeding habits and dietary overlap of three species of naidid oligochaetes (Chaetogaster diastrophus, Dero digitata, Dero nivea) were studied during June –December from a bog stream in Wisconsin, gaster diastrophus primarily ingested diatoms, and ecology of Colorado species of Chaetogaster book D.

digitata and D. nivea primarily ingested detritus. Dietary overlap was substantial (97–98%) between D. digitata Cited by:   Asexual reproduction is employed by species of Naididae during favorable environmental conditions.

In species characteristic of aquatic habitats subject to rapid fluctuations in morphology levels and temperatures most individuals in a population become sexually mature, and there is degeneration of the alimentary tract, a shortened breeding season, and aclitellar formation of by: Plant Parasitic Nematodes, Volume 1: Morphology, Anatomy, Taxonomy, and Ecology is a masterful reference work in nematology that also includes information about ultrastructure, enzymology, and chemistry of body composition; culturing; virus transmission; biological races; and nature of plant resistance.

This volume includes a discussion of the history and development of plant nematology, the. Morphology, bioacoustics, and ecology of Tibicen neomexicensis sp. n., a new species of cicada from the Sacramento Mountains in New Mexico, U.S.A. (Hemiptera, Cicadidae, Tibicen) Brian J. Stucky 1 1 Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, USACited by: 4.

Book Description. Written as a stand-alone textbook for students and a useful reference for professionals in government and private agencies, academic institutions, and consultants, Ecology and Conservation of Fishes provides broad, comprehensive, and systematic coverage of all aquatic systems from the mountains to the oceans.

The book begins with overview discussions on the ecology, evolution. A few species occur in slightly brackish environments. This chapter provides a classification of all known freshwater representatives of the Phaeophyceae, with descriptions of their morphology, reproduction, and ecology, as well as color photographs and line drawings of the taxa and a key to genera.

Chaetogaster limnaei von Baer, (Oligochaeta: Naididae) is a cosmopolitan freshwater oligochaete commonly associated with molluscs (Brinkhurst and Jamieson, ). Chaetogaster limnaei is the type species of the genus, which includes 5 other species (Brinkhurst and Jamieson, ).

It was first described by von. If, then, reproductive isolation is based more on song than on visual cues such as bill morphology, may song divergence be driven by ecological selection. Yes, the authors suggest, for two reasons. Some elements of the song, such as maximum pulse repetition rate, are “pleiotropic” effects of bill size, for mechanical reasons (Podos et.

on shell morphology, reproductive structures and, in a very few cases, genetic information. Species taxonomy will no doubt change as genetic relationships are clarified through ongoing molecular and morphological studies.

Invasive Species Non-native, invasive mollusk species are included in this guide. Invasive species are non-native organisms. Michal Ronel, Gidi Néeman, Simcha Lev-yadun, Spiny east Mediterranean plant species flower later and in a drier season than non-spiny species, Flora - Morphology, Distribution, Functional Ecology of Plants, /,4, (), ().

Thomas L. Bott, in Algal Ecology, E. Oligochaetes and Chironomid Larvae. Oligochaetes and chironomids were important diatom grazers in the WCC epibenthos (Table I), especially the oligochaete Amphichaeta sp. (Borchardt and Bott, ).Amphichaeta species were considered to be significant algivores in other haeta leydigii fed almost exclusively on diatoms in the benthos of.

Important criteria for the distinction of the different species of Chaetogaster are, according to Sperber (), among others: form, number and length of the setae.

Values for the dimension of the worm chains as well as number and length of the setae of segment II and VI.

These two segments are the most important for taxonomic determination. This guide is one of the only complete lichen inventories of a sandstone formation in North America and covers all constituents including the crustose microlichen biota, traditionally excluded from other inventories.

A short introduction and glossary equip the reader with basic information on lichen morphology, reproduction, and ecology.

Chaetogaster is a genus belonging to the segmented worms (Annelida). It is classified in the family Naididae (subfamily Naidinae) in the order are ca.

2–25 mm long transparent worms that are very common in fresh water and often form chains of individuals through asexual multiplication. Mercury bioaccumulation in two species of insectivorous bats from urban China: influence of species, age, and land use type. Archives of Environmental Contamination and.

Explore the latest full-text research PDFs, articles, conference papers, preprints and more on POLLEN MORPHOLOGY. Find methods information, sources, references or conduct a literature review on. Untangling the Ecology, Taxonomy, and Evolution of Chaetogaster limnaei (Oligochaeta: Naididae) Species Complex.

Smythe AB(1), Forgrave K(1), Patti A(1), Hochberg R(1), Litvaitis MK(1). Author information: (1)Department of Biology, Virginia Military Institute. A total of 31 species of ten families (29 species of cercariae, seven species of metacercariae, and five species found of both) were found in (%) molluscs of 15 species.

Adults inhabit inshore reef areas over hard bottoms. Generally solitary (Ref. ).Juveniles are sometimes encountered in shallow coastal waters and estuaries (Ref. ).Carnivorous, feed on invertebrates and fishes (Ref.

).Marketed fresh or frozen (Ref. Fourteen different types of food resource are exploited by different species.

They range in size from 4 cm, small enough to live in a snail shell, to 90 cm (about 3 feet). There are differences in morphology, particularly of feeding mechanisms, as well as many behavioral differences between the various species.Field Guide to the Lichens of White Rocks is a careful examination of the lichens that occur at the ecologically important and lichenologically rich urban outcropping of Fox Hills sandstone known as White Rocks Nature Preserve, located in Boulder County, Colorado.

This extensively illustrated field guide presents detailed information on the macroscopic and microscopic features needed to.Morphology and life cycle. In its natural environment at certain moments of the year Artemia produces cysts that float at the water surface (Fig.

) and that are thrown ashore by wind and cysts are metabolically inactive and do not further develop as long as they are kept dry.