Transactions of the Missouri Academy of Science最新文献

A Comparison of the Thermodynamic and Kinematic Features in Recent Blizzard and Near-Blizzard Events in Iowa 爱荷华州近期暴雪和近暴雪事件的热力学和运动学特征比较

Transactions of the Missouri Academy of Science Pub Date : 2022-01-01 DOI: 10.30956/mas-11

Jennifer L. Power, P. Market, Craig Cogil

{"title":"A Comparison of the Thermodynamic and Kinematic Features in Recent Blizzard and Near-Blizzard Events in Iowa","authors":"Jennifer L. Power, P. Market, Craig Cogil","doi":"10.30956/mas-11","DOIUrl":"https://doi.org/10.30956/mas-11","url":null,"abstract":"The purpose of this research is to determine the validity of the subjective, anecdotal rule that four isobars present across Iowa during a wintertime, snow-bearing, extratropical cyclone is sufficient to create the winds that attend a blizzard (the “Four Isobar Rule”). Using data from the National Centers for Environmental Information's online Storm Event Database, we identified 15 cases of blizzards in Iowa over the course of 10 years (1999-2009 plus one event in 2010). Subjective analyses of mean sea level pressure for those 15 events revealed an 87% success rate of having four isobars present corresponding with the Blizzard events. Conversely, we also analyzed 23 Near-Blizzard events and discovered that approximately 74% did not have four isobars present. Clearly, there is overlap between these types of events. Composite meteorological fields of both case sets were completed using the North America Regional Reanalysis datasets. The composite results are generally consistent with other recent findings on Iowa blizzards. The surface low is often fairly deep (<1000 hPa), occluded or nearly so, featuring a convergent, descending lower troposphere, with 850-hPa winds of 45 kt or greater, and a near-surface layer whose lapse rate is nearly dry adiabatic. The composites of storms in the Blizzard category are slightly weaker than in prior literature, but the composites of storms in the Near-Blizzard category fail to meet any of the criteria for a blizzard in the state of Iowa.","PeriodicalId":443111,"journal":{"name":"Transactions of the Missouri Academy of Science","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126413545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence of Aggression as it Relates to Territory Size, Fish Density, and Neighbor Number in the Yellowtail Damselfish, Stegastes arcifrons 黄尾雀鲷中与领地大小、鱼类密度和邻居数量有关的攻击性流行程度

Transactions of the Missouri Academy of Science Pub Date : 2022-01-01 DOI: 10.30956/mas-42

Reid W. Collis

{"title":"Prevalence of Aggression as it Relates to Territory Size, Fish Density, and Neighbor Number in the Yellowtail Damselfish, Stegastes arcifrons","authors":"Reid W. Collis","doi":"10.30956/mas-42","DOIUrl":"https://doi.org/10.30956/mas-42","url":null,"abstract":"\u0000 Territoriality plays a key role in the survival and reproduction of many species. Damselfish (Family: Pomacentridae), reef-dwelling fish found in tropical locations, are territorial and competitively engage both intra- and inter-specific fish in order to protect their algal lawns. While damselfish territoriality has been examined as it relates to attack distance in con- and hetero-specifics, aggression in damselfish has not yet been related to fish density and proximity. The Galápagos yellowtail damselfish, Stegastes arcifrons, was selected for analysis of the factors that affect its behavioral aggression. Yellowtail damselfish individuals (n=31) were observed in the wild in 5-minute counts for aggressive interactions toward con- and hetero-specifics. The average location of the observed damselfish, including the locations of its nearby neighbors, was noted and dive markers were placed at these locations following the 5-minute count. Photographs of the average locations of the damselfish during the test, as shown by the dive markers, were taken and imaging software was used to determine damselfish density and an approximation of controlled territory through conversion into Voronoi diagrams. Aggression rates toward conspecific encounters, measured in aggressive attacks/minute, were positively correlated with damselfish density and inversely correlated with controlled territory size (p < 0.001 for both correlations, R2 = 0.52 and 0.35 respectively). There were no significant correlations between aggression rates toward heterospecific encounters and any measured variables (p > 0.05 for all correlations). The number of nearby neighbors was also not significantly correlated with aggression (p > 0.05). Damselfish aggression is a direct function of both controlled area and conspecific density, but not of the number of nearby neighbors nor heterospecific individuals.","PeriodicalId":443111,"journal":{"name":"Transactions of the Missouri Academy of Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130423856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

yozG is needed for swarming in the undomesticated Bacillus subtilis strain NCIB 3610 未驯化的枯草芽孢杆菌菌株NCIB 3610需要yozG才能成群

Transactions of the Missouri Academy of Science Pub Date : 2022-01-01 DOI: 10.30956/mas-50

Erin I. Hayes, J. E. Patrick

引用次数: 0

First state records and habitat characteristics associated with occurrence of Telopelopia Kieffer (Diptera: Chironomidae) from wadeable streams in Missouri 密苏里州可涉水溪流中与基氏盲蝽(双翅目:手蛾科)发生有关的第一个州记录和栖息地特征

Transactions of the Missouri Academy of Science Pub Date : 2022-01-01 DOI: 10.30956/mas-46

Brandy S. Bergthold, Carl K. Wakefield, W. R. Mabee, M. Combes

引用次数: 0

Assessing Summer Pond and Lake Inlet Use by Gray Treefrogs (Hyla versicolor/chrysoscelis complex) Using PVC Pipe Traps in Northwest Missouri 利用PVC管捕集器评估密苏里州西北部灰树蛙(Hyla versicolis /chrysoscelis complex)对夏季池塘和湖泊入口的利用

Transactions of the Missouri Academy of Science Pub Date : 2020-01-01 DOI: 10.30956/mas-33

J. D. McGhee

{"title":"Assessing Summer Pond and Lake Inlet Use by Gray Treefrogs (Hyla versicolor/chrysoscelis complex) Using PVC Pipe Traps in Northwest Missouri","authors":"J. D. McGhee","doi":"10.30956/mas-33","DOIUrl":"https://doi.org/10.30956/mas-33","url":null,"abstract":"\u0000 The widespread decline in amphibian populations highlights the need for establishing rigorous monitoring methods for long-term population studies. In an attempt to launch a long-term monitoring study for a Gray Treefrog complex (Hyla versicolor LeConte /chrysoscelis Cope, hereafter treefrog) population in northwest Missouri, I tested the use of PVC pipe traps in a system of ponds and inlets along a lakeside habitat for three years. For each pond (3) and inlet (2), I established an array of 16 pipes so as to compare differences in use between pipe location, ponds and inlets, and sex ratio between sites. Pipes were checked twice a week during the summer for the presence of treefrogs. Treefrog usage of pipes between ponds and inlets were compared using a contingency table analysis, while an ANOVA was used to assess differences in sex ratios between sites (α = 0.05). A single inlet was used by treefrogs more heavily than the other ponds or inlet (G = 13.61, df = 3, P = 0.0035), however, I found no differences in terms of pipe location within a pond or inlet. Mean sex ratio between water bodies varied but did not significantly differ. There appears to be little effect in terms of pipe placement within our 50 m buffer from the water's edge, but unique habitat effects at sampling locations may significantly affect detection rates or usage.","PeriodicalId":443111,"journal":{"name":"Transactions of the Missouri Academy of Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124681414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Note On December Breeding By the Eastern Woodrat (Neotoma floridana) 关于东部木鼠(Neotoma floridana) 12月繁殖的说明

Transactions of the Missouri Academy of Science Pub Date : 2020-01-01 DOI: 10.30956/MAS-37

R. M. Pitts, L. L. Lindsey

引用次数: 0

New State Records and Habitat Characteristics for Kloosia Kruseman (Diptera: Chironomidae) from Wadeable Streams in Missouri 密苏里州可涉水溪流中赤蝽新记录及生境特征(双翅目:手蛾科)

Transactions of the Missouri Academy of Science Pub Date : 2020-01-01 DOI: 10.30956/mas-23r1

W. R. Mabee, Brandy S. Bergthold, Carl K. Wakefield, M. Combes

引用次数: 0

Effect of warmed semen extender on boar sperm quality post-collection 温热增精剂对猪采集后精子质量的影响

Transactions of the Missouri Academy of Science Pub Date : 2019-06-25 DOI: 10.30956/MAS-30

K. W. Lovercamp, A. Giri

{"title":"Effect of warmed semen extender on boar sperm quality post-collection","authors":"K. W. Lovercamp, A. Giri","doi":"10.30956/MAS-30","DOIUrl":"https://doi.org/10.30956/MAS-30","url":null,"abstract":"\u0000 Semen used for artificial insemination (AI) in the swine industry is typically collected into a warmed semen collection cup containing an empty collection bag. If the ambient temperature does not closely match the temperature of the warmed collection cup and semen at the time of collection then negative effects to the motility and morphology of the sperm cells may occur due to temperature shock. The purpose of this research was to determine if collecting boar semen directly into semen extender warmed to 38.5°C would affect sperm quality post-collection. Sexually mature Berkshire x Duroc crossbred boars (n = 7) were semen collected once per week for four consecutive weeks. Every other collection, the boar's ejaculate was collected into a collection cup and plastic collection bag warmed to 38.5°C containing either no semen extender (control) or 100 mLs of a commercially available long-term semen extender warmed to 38.5°C (treatment). Following collection and processing, the semen was extended to 37.5 × 106 sperm/mL and stored for 6 days post-collection in a semen cooler at 17°C. Motility and morphology were evaluated on day 0 (day of collection) and day 6. There was no day x treatment effect (P > 0.05). Statistical differences (P = 0.03) were found between the treatment and control for sperm motility (82.2 vs. 75.2%) and sperm progressive motility (64.1 vs. 53.5%). No differences (P = 0.96) were present for normal sperm morphology in the treatment compared to the control (89.1 vs. 89.0%). These data suggest that boar semen ejaculates collected into a collection cup and plastic collection bag containing 100 mLs of semen extender warmed to 38.5°C will have greater percentages of motile and progressively motile sperm compared to boar sperm collected into a collection cup and plastic collection bag warmed to 38.5°C containing no semen extender.","PeriodicalId":443111,"journal":{"name":"Transactions of the Missouri Academy of Science","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128214083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Presentation Abstracts 55th Annual Meeting Missouri Academy of Science April 12-13, 2019 Northwest Missouri State University Maryville, MO 第55届密苏里科学院年会2019年4月12日至13日西北密苏里州立大学，密苏里州玛丽维尔

Transactions of the Missouri Academy of Science Pub Date : 2019-01-01 DOI: 10.30956/mas-36

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Trichoclinocera (Diptera: Empididae): a new aquatic dance fly record for Missouri 毛缕蝇(双翅目:蠓科):密苏里水生舞蝇新记录

Transactions of the Missouri Academy of Science Pub Date : 2019-01-01 DOI: 10.30956/mas-28r1

Seth W. Lanning, B. Sinclair, W. R. Mabee, M. Combes

引用次数: 0