The Texas Journal of Science最新文献_第7页

PATTERNS OF GASTROPOD MOLLUSK PREDATION ON BIVALVE MOLLUSKS ALONG THE UPPER TEXAS GULF COAST 上德克萨斯海湾沿岸腹足类软体动物捕食双壳类软体动物的模式

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_ARTICLE5

S. Randolph, A. Maccarone

{"title":"PATTERNS OF GASTROPOD MOLLUSK PREDATION ON BIVALVE MOLLUSKS ALONG THE UPPER TEXAS GULF COAST","authors":"S. Randolph, A. Maccarone","doi":"10.32011/TXJSCI_70_1_ARTICLE5","DOIUrl":"https://doi.org/10.32011/TXJSCI_70_1_ARTICLE5","url":null,"abstract":"\u0000 Predation on bivalve mollusks by gastropod mollusks is common in coastal regions of the United States; however, few previous studies have examined whether drilling gastropods exhibit prey selection. In 2016, shells with small holes drilled by as many as two gastropod predators were collected at three sites separated by 30 km along the Texas Upper Gulf Coast on the Bolivar Peninsula (29° 40′N, 94° 90′W). The likeliest predators in these waters are the southern oyster drill (Stramonita haemastoma Linnaeus 1767) and the moon snail (Neverita duplicate Say 1822). Collected shells were identified to species and measurements were taken to examine statistical relationships between predators and prey species. These measurements included drill-hole diameter, shell thickness, drill-hole completeness, number of drill attempts, and collection site. Across the three locations, 17 different species of shells with drill holes were collected; of these, we focused on the ten most abundant species (n = 277 shells). The sample showed high variation in drill-hole diameter, shell thickness, and drill-hole completeness. Both the total number of holes and mean drill-hole diameter differed significantly among prey species (ANOVA, both P < 0.0001). In addition, drill-hole diameter correlated directly with prey shell thickness (P < 0.0001). Shells whose drill holes were complete were significantly thinner than shells with incomplete holes (P < 0.0001). Mean prey shell thickness, mean drill-hole diameter, and mean number of drill holes all differed significantly by collection site (all P < 0.0001). Ecological and morphological implications related to gastropod predation on mollusks are discussed.","PeriodicalId":54431,"journal":{"name":"The Texas Journal of Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48781920","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: 1

SEAGRASS MONITORING IN SAN ANTONIO BAY, TEXAS WITH IMPLICATIONS FOR MANAGEMENT 德克萨斯州圣安东尼奥湾的海草监测及其管理意义

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_ARTICLE1

C. Hobson, A. Whisenant

{"title":"SEAGRASS MONITORING IN SAN ANTONIO BAY, TEXAS WITH IMPLICATIONS FOR MANAGEMENT","authors":"C. Hobson, A. Whisenant","doi":"10.32011/TXJSCI_70_1_ARTICLE1","DOIUrl":"https://doi.org/10.32011/TXJSCI_70_1_ARTICLE1","url":null,"abstract":"\u0000 As resource managers have become more aware of the ecosystem services provided by seagrasses (providing food, cycling nutrients, stabilizing sediments, etc.), the need to evaluate and monitor the condition of seagrass beds over time has become a conservation priority. In 2012, the Texas Parks and Wildlife Department (TPWD) launched a pilot seagrass monitoring program designed to monitor changes in seagrass condition across coastal Texas. Given limited state resources, an ongoing monitoring plan needs to be feasible using existing staff and equipment in an efficient manner. As part of the pilot study, seagrass percent coverage and canopy height were measured at fifty stations in San Antonio Bay (the Guadalupe River estuary), Texas. Seagrass beds were monitored in early fall over three years (2012, 2014, and 2015) to capture peak above-ground biomass. Percent coverage of Halodule wrightii, the dominant seagrass species in San Antonio Bay, decreased significantly over time, as did canopy height. Two other seagrass species, Halophila engelmannii and Ruppia maritima, were documented at lower frequencies in the bay during the study. Higher occurrence of Ruppia maritima in the third and final year of the study may have been linked to reduced bay salinities.","PeriodicalId":54431,"journal":{"name":"The Texas Journal of Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49397856","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: 1

PORIFERAN ABUNDANCE IS NEGATIVELY ASSOCIATED WITH CORAL HEALTH IN THE MESOAMERICAN REEF 中美洲珊瑚礁中的孢子虫数量与珊瑚健康呈负相关

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_ARTICLE7

MacKenzie L. Kroll, Bobby A. Rodriguez, Andrea C. Edie, K. Phelps, Donna E. Hamilton, S. Randell, Stephanie A. Lockwood

{"title":"PORIFERAN ABUNDANCE IS NEGATIVELY ASSOCIATED WITH CORAL HEALTH IN THE MESOAMERICAN REEF","authors":"MacKenzie L. Kroll, Bobby A. Rodriguez, Andrea C. Edie, K. Phelps, Donna E. Hamilton, S. Randell, Stephanie A. Lockwood","doi":"10.32011/TXJSCI_70_1_ARTICLE7","DOIUrl":"https://doi.org/10.32011/TXJSCI_70_1_ARTICLE7","url":null,"abstract":"\u0000 The Mesoamerican Reef is the second largest coral reef in the world and has experienced a 50% loss of coral coverage in recent decades. Due to the high biodiversity of marine life that depend on the Mesoamerican Reef, identifying drivers of coral loss is crucial. This study was designed to assess the relationship between the presence of yellow band disease (YBD) and white plague type-II (WPII) on stony corals with environmental (water depth) and biological stressors (abundance of sponges in close proximity) in the reef surrounding the Bay Islands, Honduras. Both radial and parallel transect survey techniques were used to quantify the abundance of seven sponge species within a one-meter radius of Orbicella species and Montastraea cavernsoa. The strongest predictor of coral health was the abundance of Callyspongia plicifera, followed by Svenzea zeai, in close proximity to diseased coral. A weak, but positive, correlation between poriferan abundance and the presence of disease lesions on coral was observed. However, no significant relationship of disease prevalence with water depth was observed. Additionally, no differences in the prevalence of disease lesions between four species of native stony corals were observed. These findings suggest coral species are equally susceptible to bacterial pathogens, but that close association with poriferans may increase the transmission and persistence of harmful bacteria in coral reef ecosystems.","PeriodicalId":54431,"journal":{"name":"The Texas Journal of Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43380697","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: 1

SOIL CONTAMINANT SAMPLING RESULTS FROM LOWER RIO GRANDE VALLEY NATIONAL WILDLIFE REFUGE'S BOCA CHICA TRACT, CAMERON COUNTY, TEXAS 德克萨斯州卡梅伦县下里奥格兰德谷国家野生动物保护区博卡-奇卡地区土壤污染物采样结果

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/txjsci_70_1_note2

Christopher J. Perez, J. Downey

引用次数: 0

YEAR-ROUND BRIDGE COLONY OF MEXICAN FREE-TAILED BATS (TADARIDA BRASILIENSIS MEXICANA) IN TRANS-PECOS TEXAS 德克萨斯州跨佩科斯地区墨西哥无尾蝙蝠的一年四季桥群

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_ARTICLE4

S. Kasper, F. Yancey

引用次数: 5

REPRODUCTION IN THE CAPE REGION WHIPTAIL ASPIDOSCELIS TIGRIS MAXIMUS (SQUAMATA: TEIIDAE) FROM BAJA CALIFORNIA SUR, MEXICO 开普地区的繁殖:墨西哥下加利福尼亚地区的鞭尾蜘蛛(鳞目:虎蛛科)

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_NOTE1

S. Goldberg, Clark R. Mahrdt

{"title":"REPRODUCTION IN THE CAPE REGION WHIPTAIL ASPIDOSCELIS TIGRIS MAXIMUS (SQUAMATA: TEIIDAE) FROM BAJA CALIFORNIA SUR, MEXICO","authors":"S. Goldberg, Clark R. Mahrdt","doi":"10.32011/TXJSCI_70_1_NOTE1","DOIUrl":"https://doi.org/10.32011/TXJSCI_70_1_NOTE1","url":null,"abstract":"Stephen R. Goldberg1* and Clark R. Mahrdt2 1Whittier College, Department of Biology, Whittier, California 90608 2San Diego Natural History Museum, Department of Herpetology 1788 El Prado, San Diego, California 92101 *Corresponding author; Email: sgoldberg@whittier.edu ––––––––––––––––––––––––– The Western Whiptail, Aspidoscelis tigris is currently recognized as a polytypic species and comprises nine subspecies in Baja California, Mexico (Grismer 2002). The endemic Cape Region Whiptail, Aspidoscelis tigris maximus occurs throughout the arid tropical region of the Cape Region of Baja California Sur. Asplund (1967) previously reported on the reproduction of A. t. maximus (as Cnemidophorus maximus Cope, 1864) for the month of August during the summer rainfall season in the Cape Region. The purpose of this study is to provide additional information on the reproductive cycle of A. tigris from the Cape Region, Baja California Sur, Mexico utilizing a histological examination of gonadal material from museum specimens, a method often used to avoid removing additional specimens from a population. The minimum sizes for reproduction of males and females are provided.","PeriodicalId":54431,"journal":{"name":"The Texas Journal of Science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46065606","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

COUNTY RECORDS AND MAJOR RANGE EXTENSIONS FOR VASCULAR PLANTS FROM THE WEST CROSS TIMBERS IN ERATH COUNTY, TEXAS 得克萨斯州erath县维管植物的县记录和主要范围扩展

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_ARTICLE3

T. Cotton, A. Nelson

引用次数: 1

POTENTIAL SIGNIFICANCE OF FALL BREEDING OF THE MONARCH BUTTERFLY (DANAUS PLEXIPPUS) IN THE ROLLING PLAINS ECOREGION OF WEST TEXAS 西德克萨斯起伏平原生态地区黑脉金斑蝶秋季繁殖的潜在意义

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_NOTE4

M. Brym, C. Henry, R. Kendall

引用次数: 4

RANGE EXPANSION OF THE NORTHERN PYGMY MOUSE (BAIOMYS TAYLORI) INTO EASTERN NEW MEXICO 北侏儒鼠（BAIOMYS TAYLORI）向新墨西哥州东部的活动范围扩大

The Texas Journal of Science Pub Date : 2018-10-01 DOI: 10.32011/TXJSCI_70_1_NOTE3

Keith Geluso, K. Geluso

引用次数: 0

In vitro Digestability of Fall Forages by Coexisting Deer Species in Texas 德克萨斯州共存鹿种对秋季牧草体外消化率的研究

The Texas Journal of Science Pub Date : 1992-01-01 DOI: 10.1007/978-1-4612-2782-3_112

James J. Jackley, S. Demarais, L. Varner, T. Barnes

引用次数: 6