The family Urticaceae in Canada

1974 ◽  
Vol 52 (3) ◽  
pp. 503-516 ◽  
Author(s):  
I. J. Bassett ◽  
C. W. Crompton ◽  
D. W. Woodland
Keyword(s):  
Rocky Mountains ◽  
East Coast ◽  
Seed Set ◽  
Urtica Dioica ◽  
Distribution Data ◽  
Chromosome Counts ◽  
The West ◽  
The Family ◽  
Mother Cells ◽  
Pilea Pumila

Descriptions of major morphological features including those of the pollen, chromosome counts, and distribution data of the taxa of the family Urticaceae found in Canada are presented. There has been confusion in the species epithets applied to the genus Urtica. This study indicates that there are only three taxa in Canada: U. urens, 2n = 26; U. dioica ssp. dioica, 2n = 52; and U. dioica ssp. gracilis, 2n = 26 and 52. The tetraploid U. dioica ssp. gracilis ranges from the Rocky Mountains to the west coast while the diploid race occurs from the eastern side of the Rocky Mountains to the east coast. Artificial hybrids within the diploid race of Urtica dioica ssp. gracilis produced F1 plants with plenty of fertile seeds while a cross between a diploid and a tetraploid race of this taxon produced F1 plants with irregular chromosome pairing in the pollen mother cells and no seed set. The introduced U. dioica ssp. dioica ranges from Ontario to Newfoundland and the annual U. urens is widely scattered from the Yukon to Newfoundland. Laportea canadensis and Pilea pumila were found to have 26 somatic chromosomes; Boehmeria cylindrica, 28; and Parietaria pensylvanica, 16.

A catalog of the Lampyridae (Coleoptera) of the West Indies

Zootaxa ◽  
2021 ◽  
Vol 4970 (1) ◽  
pp. 53-105
Author(s):  
OLIVER KELLER ◽  
MARC A. BRANHAM
Keyword(s):  
West Indies ◽  
Distribution Data ◽  
Short Discussion ◽  
The West ◽  
Starting Point ◽  
The Family ◽  
Taxonomic Research ◽  
Exhaustive List

The West Indies represents one of the world’s hotspots for beetles in the family Lampyridae and includes many endemic taxa. Nine out of 19 genera and 181 out of 186 species of the currently described firefly taxa present in the West Indies are endemic to the region. The objective of this catalog and bibliography is to generate an exhaustive list of firefly taxa present in the West Indies. A short discussion of previous efforts to catalog this fauna is presented, and all published distribution data is herein synthesized. This catalog serves as a starting point for systematic and taxonomic research on the fireflies of this region and provides a full bibliography for each species. The following species were deemed subspecific and unavailable: Callopisma rufa var. humeralis E. Olivier, Lucidota fulvotincta var. flavicollis Mutchler, and Robopus magnus var. turquino (Mutchler). 

scholarly journals INVENTORY AND DISTRIBUTION OF MOLLUSC IN CORAL REEF OF BACAN ISLAND WATERS, NORTH MALUKU PROVINCE

2017 ◽  
Vol 9 (1) ◽  
pp. 265
Author(s):  
Hendrik A.W. Cappenberg
Keyword(s):  
Coral Reef ◽  
West Coast ◽  
Reef Flat ◽  
East Coast ◽  
Resource Assessment ◽  
Species Level ◽  
Marine Biodiversity ◽  
The West ◽  
Important Species ◽  
The Family

<p><em>Bacan Island waters of </em><em>North Maluku Province </em><em>consist</em><em>ed</em><em> of three </em><em>main tropical </em><em>ecosystem</em><em>s, namely</em><em> mangrove, seagrass, and coral reef with </em><em>the</em><em> highest marine biodiversity. Mollusc is </em><em>a group of </em><em>marine </em><em>fauna that most of them </em><em>associate</em><em>d</em><em> </em><em>with </em><em>coral reef</em><em>.  However, little is known about their information in the Bacan Island due to lack of study conducted there. </em><em>The purpose of </em><em>this study is to observe the diversity and distribution of mollusc fauna in the </em><em>coral reef flat of</em><em> Bacan Island. M</em><em>ollusc</em><em> i</em><em>nventory was done using Rapid Reef Resource Assessment (RRA) </em><em>method </em><em>by </em><em>snorkling in the reefs of east coast (25 sites) and west coast (10 sites) of Bacan Island. </em><em>The </em><em>mollus</em><em>cs found </em><em>were directly identified into species level and recorded.  </em><em>Results of inventory </em><em>show that there are </em><em>47 species </em><em>belong to </em><em>19 famil</em><em>ies with the family of </em><em>Muricidae is</em><em> the </em><em>highest </em><em>diversity (</em><em>6 species</em><em>), while the lowest are </em><em>Buccinidae, Bursidae, Haliotidae, Olividae, Cardiidae, Isognomonidae and Spondylidae</em><em>, respectively with only 1</em><em> species</em><em> in each of those families. T</em><em>he highest </em><em>species </em><em>number of mollusc was </em><em>distributed along the east coast of the island (</em><em>40 species)</em><em>, </em><em>and </em><em>the</em><em> </em><em>lowest one was i</em><em>n </em><em>the west coast (</em><em>37 species</em><em>)</em><em>. Some species such as Tridacna spp., Pinctada margaritifera and Pteria pengui</em><em>n are important species, because they have economical values.</em><em></em></p><p><em> </em></p><strong><em>Keywords</em></strong><em>:       biodiversity, molluscs, coral reef, Bacan Island, North Maluku</em>

Peregrinação Acadêmica: A mulher Romeira do Bom Jesus da Lapa

2020 ◽  
Author(s):  
Sandra Célia Coelho Gomes da Silva
Keyword(s):  
Gender Identity ◽  
Social Reproduction ◽  
Participant Observation ◽  
Female Gender ◽  
Age Group ◽  
Structured Interviews ◽  
The West ◽  
Patriarchal Family ◽  
The Family ◽  
West Part

This work is the result of the doctoral thesis entitled Pilgrimage of Bom Jesus da Lapa: Social Reproduction of the Family and Female Gender Identity, specifically the second chapter that talks about women in the Pilgrimage of Bom Jesus da Lapa, emphasizing gender relations, analyzing the location of the pilgrimage as a social reproduction of the patriarchal family and female gender identity. The research scenario is the Bom Jesus da Lapa Pilgrimage, which has been held for 329 years, in that city, located in the West part of Bahia. The research participants are pilgrim women who are in the age group between 50 and 70 years old and have participated, for more than five consecutive years in the Bom Jesus da Lapa Pilgrimage, belonging to five Brazilian states (Bahia, Minas Gerais, São Paulo, Espírito Santo and Goiás) that register a higher frequency of attendance at this religious event. We used bibliographic, qualitative, field and documentary research and data collection as our methodology; we applied participant observation and semi-structured interviews as a technique. We concluded that the Bom Jesus da Lapa Pilgrimage is a location for family social reproduction and the female gender identity, observing a contrast in the resignification of the role and in the profile of the pilgrim women from Bom Jesus da Lapa, alternating between permanence and the transformation of gender identity coming from patriarchy.

Fossil impression of a nephtyid polychaete (Polychaeta: Nephtyidae) in the Miocene sediments of Sakhalin (NW Pacific)

2018 ◽  
Vol 27 (2) ◽  
pp. 200-204
Author(s):  
S.Yu. Gagaev
Keyword(s):  
Zoological Institute ◽  
The West ◽  
Upper Miocene ◽  
Russian Academy Of Sciences ◽  
The Family ◽  
Academy Of Sciences

During the expedition of the Zoological Institute of the Russian Academy of Sciences (ZIN RAS) in 1998, a fossil impression of a polychaete worm belonging to the family Nephtyidae Grube, 1850, containing fragments of jaws, was found in the west of Sakhalin. The find is dated to the Middle and Upper Miocene. There are no published records of any finds of fossil nephtyids in the area. Based on the analysis of the jaw shape, it is concluded that the nephtyid impression may belong to the genus Nephtys Cuvier 1817 or the genus Aglaophamus Kinberg, 1865.

scholarly journals ENSO and Wintertime Extreme Precipitation Events over the Contiguous United States

2008 ◽  
Vol 21 (1) ◽  
pp. 22-39 ◽  
Author(s):  
Siegfried D. Schubert ◽  
Yehui Chang ◽  
Max J. Suarez ◽  
Philip J. Pegion
Keyword(s):  
United States ◽  
West Coast ◽  
Extreme Precipitation ◽  
East Coast ◽  
Daily Precipitation ◽  
Precipitation Variability ◽  
The West ◽  
Extreme Precipitation Events ◽  
The Impact ◽  
Precipitation Events

Abstract In this study the authors examine the impact of El Niño–Southern Oscillation (ENSO) on precipitation events over the continental United States using 49 winters (1949/50–1997/98) of daily precipitation observations and NCEP–NCAR reanalyses. The results are compared with those from an ensemble of nine atmospheric general circulation model (AGCM) simulations forced with observed SST for the same time period. Empirical orthogonal functions (EOFs) of the daily precipitation fields together with compositing techniques are used to identify and characterize the weather systems that dominate the winter precipitation variability. The time series of the principal components (PCs) associated with the leading EOFs are analyzed using generalized extreme value (GEV) distributions to quantify the impact of ENSO on the intensity of extreme precipitation events. The six leading EOFs of the observations are associated with major winter storm systems and account for more than 50% of the daily precipitation variability along the West Coast and over much of the eastern part of the country. Two of the leading EOFs (designated GC for Gulf Coast and EC for East Coast) together represent cyclones that develop in the Gulf of Mexico and occasionally move and/or redevelop along the East Coast producing large amounts of precipitation over much of the southern and eastern United States. Three of the leading EOFs represent storms that hit different sections of the West Coast (designated SW for Southwest coast, WC for the central West Coast, and NW for northwest coast), while another represents storms that affect the Midwest (designated by MW). The winter maxima of several of the leading PCs are significantly impacted by ENSO such that extreme GC, EC, and SW storms that occur on average only once every 20 years (20-yr storms) would occur on average in half that time under sustained El Niño conditions. In contrast, under La Niña conditions, 20-yr GC and EC storms would occur on average about once in 30 years, while there is little impact of La Niña on the intensity of the SW storms. The leading EOFs from the model simulations and their connections to ENSO are for the most part quite realistic. The model, in particular, does very well in simulating the impact of ENSO on the intensity of EC and GC storms. The main model discrepancies are the lack of SW storms and an overall underestimate of the daily precipitation variance.

Climatic implications of latest Pleistocene and earliest Holocene mammalian sympatries in eastern Washington state, USA

2008 ◽  
Vol 70 (3) ◽  
pp. 426-432 ◽  
Author(s):  
R. Lee Lyman
Keyword(s):  
North America ◽  
Late Pleistocene ◽  
Rocky Mountains ◽  
Taxonomic Composition ◽  
Washington State ◽  
The West ◽  
Mammalian Faunas ◽  
Eastern Washington

AbstractFor more than fifty years it has been known that mammalian faunas of late-Pleistocene age are taxonomically unique and lack modern analogs. It has long been thought that nonanalog mammalian faunas are limited in North America to areas east of the Rocky Mountains and that late-Pleistocene mammalian faunas in the west were modern in taxonomic composition. A late-Pleistocene fauna from Marmes Rockshelter in southeastern Washington State has no modern analog and defines an area of maximum sympatry that indicates significantly cooler summers than are found in the area today. An earliest Holocene fauna from Marmes Rockshelter defines an area of maximum sympatry, including the site area, but contains a single tentatively identified taxon that may indicate slightly cooler than modern summers.

A curious case of nematode parasitism in a West African Hadada, Gevonticus hagedash

1945 ◽  
Vol 21 (2-3) ◽  
pp. 99-103 ◽  
Author(s):  
Phyllis A. Clapham
Keyword(s):  
Small Intestine ◽  
West Africa ◽  
West Coast ◽  
West African ◽  
The West ◽  
The Family ◽  
Nematode Parasitism

In the following article is described an interesting parasitic condition which is difficult to interpret. The small intestine of an Hadada, Geronticus hagedash, was brought back from the West Coast of Africa by Major T. A. Cockburn, M.D., R.A.M.C, who kindly passed it to me for further examination. The bird is a member of the family Plataleidae, living in wooded districts in West Africa in the neighbourhood of water and feeding on invertebrates, mainly annelids and small crustaceans which it finds at the bottom of ponds and streams in the mud.

CYTOLOGY OF 2n POLLEN FORMATION IN DIPLOID ALFALFA, MEDICAGO SATIVA

1979 ◽  
Vol 21 (4) ◽  
pp. 525-530 ◽  
Author(s):  
Nicholi Vorsa ◽  
E. T. Bingham
Keyword(s):  
Medicago Sativa ◽  
Seed Set ◽  
Pollen Grains ◽  
Genetic Constitution ◽  
2N Pollen ◽  
Diploid Parent ◽  
2N Gamete ◽  
Medicago Sativa L ◽  
Pollen Formation ◽  
Mother Cells

Four diploid (2x) clones of alfalfa, Medicago sativa L., which produced good seed set when used as male parents in 4x-2x crosses were selected for study. The 2x clones descended from 2x haploids of cultivated 4x alfalfa. Fertility in the 4x-2x cross was due to the production of pollen with the unreduced chromosome number (2n pollen) from the 2x parent. The cytological mechanism of 2n pollen formation was found to be disorientation of spindles at metaphase II in up to 38% of the pollen mother cells. Thus, both n and 2n pollen were produced by all four diploids examined. Normal spindles at metaphase II were oriented such that they defined the poles of a tetrahedron and resulted in normal tetrads in a tetrahedral arrangement. Disoriented spindles were basically parallel to each other and resulted in formation of dyads and occasionally a triad. Dyads developed into two 2n pollen grains; triads developed into one 2n and two n pollen grains. Since both n and 2n pollen grains are produced by the diploids, they can be maintained as diploids or they can be used as male parents in crosses to tetraploids. The genetic constitution of 2n pollen resulting from parallel spindles is similar to that expected after first division restitution of meiosis and much of the heterozygosity of the diploid parent is conserved in the gametes. The 2n gamete mechanism has potential application in germplasm transfer and in maximizing heterozygosity in tetraploid hybrids.

Fireworms (Amphinomidae: Annelida) from Ascension and Saint Helena Island, Central South Atlantic Ocean

2015 ◽  
Vol 8 ◽  
Author(s):  
Beatriz Yáñez-Rivera ◽  
Judith Brown
Keyword(s):  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Genetic Connectivity ◽  
The West ◽  
Hermodice Carunculata ◽  
The Family ◽  
Volcanic Islands ◽  
Central South

Ascension and Saint Helena Islands are isolated volcanic islands in the South Atlantic Ocean. Records of annelids from the family Amphinomidae, commonly known as fireworms, are rare. Fireworm species recorded in both localities includeEurythoe complanataandHermodice carunculata,which are broadly distributed throughout the Atlantic Ocean. Here we present the characterization of both species from a recent expedition to Ascension and Saint Helena. Morphologically, specimens fromH. carunculatacorrespond to the West Atlantic population, whileE. complanataspecimens were clearly identified based on chaetal type. A genetic analysis, including material from Ascension and Saint Helena Islands, will be necessary to elucidate the genetic connectivity across the Atlantic Ocean.

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