DOCSLIB.ORG

Effects of Pumped Flows Into Rincon Bayou on Water Quality and Benthic Macrofauna Coastal Bend Bays & Estuaries Program

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Effects of Pumped Flows Into Rincon Bayou on Water Quality and Benthic Macrofauna Coastal Bend Bays & Estuaries Program Effects of Pumped Flows into Rincon Bayou on Water Quality and Benthic Macrofauna Final Report CBBEP Publication - 101 Project Number –1417 August 2015 Prepared by: Dr. Paul A. Montagna, Principal Investigator Harte Research Institute for Gulf of Mexico Studies Texas A&M University-Corpus Christi 6300 Ocean Dr., Unit 5869 Corpus Christi, Texas 78412 Phone: 361-825-2040 Email: [email protected] Submitted to: Coastal Bend Bays & Estuaries Program 615 N. Upper Broadway, Suite 1200 Corpus Christi, TX 78401 The views expressed herein are those of the authors and do not necessarily reflect the views of CBBEP or other organizations that may have provided funding for this project. Effects of Pumped Flows into Rincon Bayou on Water Quality and Benthic Macrofauna Principal Investigator: Dr. Paul A. Montagna Co-Authors: Leslie Adams, Crystal Chaloupka, Elizabeth DelRosario, Amanda Gordon, Meredyth Herdener, Richard D. Kalke, Terry A. Palmer, and Evan L. Turner Harte Research Institute for Gulf of Mexico Studies Texas A&M University - Corpus Christi 6300 Ocean Drive, Unit 5869 Corpus Christi, Texas 78412 Phone: 361-825-2040 Email: [email protected] Final report submitted to: Coastal Bend Bays & Estuaries Program, Inc. 615 N. Upper Broadway, Suite 1200 Corpus Christi, TX 78401 CBBEP Project Number 1417 August 2015 Cite as: Montagna, P.A., L. Adams, C. Chaloupka, E. DelRosario, A. Gordon, M. Herdener, R.D. Kalke, T.A. Palmer, and E.L. Turner. 2015. Effects of Pumped Flows into Rincon Bayou on Water Quality and Benthic Macrofauna. Final Report to the Coastal Bend Bays & Estuaries Program for Project # 1417. Harte Research Institute, Texas A&M University-Corpus Christi, Corpus Christi, Texas, 46 pp. Table of Contents List of Figures ................................................................................................................................. ii List of Tables ................................................................................................................................. iv Abstract ........................................................................................................................................... v Introduction ..................................................................................................................................... 1 Methods........................................................................................................................................... 2 Sampling ..................................................................................................................................... 2 Water Quality .............................................................................................................................. 4 Macrofauna-Infauna .................................................................................................................... 4 Macrofauna-Epifauna ................................................................................................................. 5 Analytics ..................................................................................................................................... 5 Water Quality Response to Inflow .......................................................................................... 5 Community Structure .............................................................................................................. 6 Biotic Response to Salinity ..................................................................................................... 6 Hydrology ................................................................................................................................... 7 Results ............................................................................................................................................. 8 Hydrology and Salinity ............................................................................................................... 8 Water Quality ............................................................................................................................ 18 Macroinfauna ............................................................................................................................ 21 Long-term Trend ....................................................................................................................... 21 Response to Physical Variables ................................................................................................ 27 Relationship to Water Quality .............................................................................................. 27 Relationship to Salinity ......................................................................................................... 27 Epifauna .................................................................................................................................... 35 Discussion ..................................................................................................................................... 40 Biotic Response to Salinity ....................................................................................................... 40 Infauna .................................................................................................................................. 40 Epifauna ................................................................................................................................ 40 Salinity Flow Relationships ...................................................................................................... 42 Management Recommendations ............................................................................................... 43 References ..................................................................................................................................... 44 i List of Figures Figure 1. Location of the Nueces Delta within the Nueces Estuary. .............................................. 3 Figure 2. Study area with sample locations. a) State of Texas with the Nueces Basin highlighted. b) Location of Choke Canyon Reservoir and Lake Corpus Christi within the Nueces Basin. c) Location of the Nueces Delta marsh containing Rincon Bayou. ........................ 3 Figure 3. Map of station locations for measuring flow, salinity, and weather in Rincon Bayou. .. 7 Figure 4. Salinity gradient (i.e., difference between downstream SALT03 and upstream NUDE2) and pumping events. The Rincon Bayou pipeline became operation in September 2009, and width of the box indicates pumping duration. .............................................................. 9 Figure 5. Percent occurrence of salinity ranges in Rincon Bayou (NUDE2) from May 2009 to May 2015. ......................................................................................................................... 10 Figure 6. Salinity at Station C in Rincon Bayou TX, with inflow and discharge from the Rincon Bayou channel gage and pumped inflow, 2014 to 2015. .................................................. 11 Figure 7. Salinity at Station C in Rincon Bayou TX, with Rainfall from CBI NUDEWX station, 2014 to 2015. .................................................................................................................... 12 Figure 8. Pumped inflow into Rincon Bayou, TX with rainfall from CBI NUDEWX station, 2014 to 2015. .................................................................................................................... 13 Figure 9. Inflow and discharge at the Rincon Bayou overflow channel gage, and pumped inflow from 2009 - 2015. ............................................................................................................. 14 Figure 10. Flow duration curve for Nueces River inflow and discharge at the Rincon Bayou channel gage, September 2009 to May 2015. Left: full inflow scale. Right: zoom to positive inflow values only. .............................................................................................. 15 Figure 11. Percent occurrence for Nueces River inflow and discharge at the Rincon Bayou channel gage September 2009 to May 2015. .................................................................... 16 Figure 12. Percent occurrence for inflow and discharge at the Rincon Bayou channel gage before (September 2009 to June 2014) and after the installation of the freshwater inflow management structure (July 2014 to May 2015). ............................................................. 17 Figure 13. Flow duration curve for Rincon Bayou before (September 2009 to June 2014) and after the installation of the freshwater inflow management structure (July 2014 to May 2015). Left: full inflow scale. Right: zoomed to positive inflow scale only. .................. 17 Figure 14. Principal Components Analysis (PCA) of water quality variables from Station C in Rincon Bayou. Top: Variable loads. Bottom: Sample scores using the number of days since the last pumping day for each sampling date as the symbol.................................... 19 Figure 15. Principal Components Analysis (PCA) of water quality variables from Station C in Rincon Bayou. Top: Variable loads. Bottom: Sample scores using the station name as the symbol. .............................................................................................................................. 20 Figure 16. Macroinfauna abundance and salinity over time since pumping began. ..................... 21
Load more

Recommended publications
  • Management Strategies for the Rincon Bayou Pipeline
    Management Strategies for the Rincon Bayou Pipeline Final Report CBBEP Publication – 128 Project Number -1817 January 2019 Prepared by: Dr. Paul A. Montagna, Principal Investigator Harte Research Institute for Gulf of Mexico Studies Texas A&M University-Corpus Christi 6300 Ocean Dr., Unit 5869 Corpus Christi, Texas 78412 Phone: 361-825-2040 Email: [email protected] Submitted to: Coastal Bend Bays & Estuaries Program 615 N. Upper Broadway, Suite 1200 Corpus Christi, TX 78401 The views expressed herein are those of the authors and do not necessarily reflect the views of CBBEP or other organizations that may have provided funding for this project. Management Strategies for the Rincon Bayou Pipeline Principal Investigator: Dr. Paul A. Montagna Harte Research Institute for Gulf of Mexico Studies Texas A&M University - Corpus Christi 6300 Ocean Drive, Unit 5869 Corpus Christi, Texas 78412 Phone: 361-825-2040 Email: [email protected] Final report submitted to: Coastal Bend Bays & Estuaries Program, Inc. 615 N. Upper Broadway, Suite 1200 Corpus Christi, TX 78401 CBBEP Project Number 1817 January 2019 Cite as: Montagna, P.A. 2019. Management Strategies for the Rincon Bayou Pipeline. Final Report to the Coastal Bend Bays & Estuaries Program for Project # 1817, CBBEP Publication – 128. Harte Research Institute, Texas A&M University- Corpus Christi, Corpus Christi, Texas, 45 pp. Left Blank for 2-sided printing Acknowledgements This project was funded in part by U.S. Environmental Protection Agency (EPA) Cooperative Agreement Numbers: C6-480000-54, EPA Q-TRAK# - 18-387. We thank Sharon R. Coleman, Texas Commission on Environmental Quality (TCEQ); Terry Mendiola, EPA; Cory Horan, TCEQ; Curry Jones, EPA; and Kerry Niemann, TCEQ for reviewing and approving the Quality Assurance Project Plan.
    [Show full text]
  • Boccardia Proboscidea Class: Polychaeta, Sedentaria, Canalipalpata
    Phylum: Annelida Boccardia proboscidea Class: Polychaeta, Sedentaria, Canalipalpata Order: Spionida, Spioniformia A burrowing spionid worm Family: Spionidae Taxonomy: Boccardia proboscidea’s senior Trunk: subjective synonym, Polydora californica Posterior: Pygidium is a round, flaring (Treadwell, 1914) and an un-typified name, disc with four unequal lobes where dorsal Spio californica (Fewkes, 1889) were both lobes are smaller (Fig. 4) (Hartman 1969). suppressed in 2012 by the International Parapodia: Biramous after first setiger. Commission on Zoological Nomenclature Podia on the first setiger are not lobed, small (ICZN, case 3520). The widely cited and and inconspicuous. The second setiger's used name, Boccardia proboscidea parapodial lobes become twice as large as (Hartman, 1940) was conserved (ICZN the first's, and continue to worm posterior. 2012). Setae (chaetae): All setae are simple and in- clude bunches of short, capillary spines to se- Description tiger six (except for modified setiger five) Size: Specimens up to 30–35 mm in length (Figs. 5a, b). A transverse row of and 1.5 mm in width, where length extends approximately eight neuropodial uncini with age (Hartman 1940). The illustrated (hooded hooks) with bifid (two-pronged) tips specimen has approximately 130 segments begins on setiger seven and continues to (Fig. 1). posterior end (Fig. 5e), with bunches of Color: Yellow-orange with red branchiae capillary setae below them (until setiger 11). and dusky areas around prostomium and Notosetae of setiger five are heavy, dark and parapodia (Hartman 1969). Sato-Okoshi arranged vertically in two rows of five with and Okoshi (1997) report black pigment fol- pairs of long, falcate spines (Fig.
    [Show full text]
  • History of Water and Habitat Improvement in the Nueces Estuary, Texas, USA
    An online, peer-reviewed journal texaswaterjournal.org published in cooperation with the Texas Water Resources Institute TEXAS WATER JOURNAL Volume 2, Number 1 2011 TEXAS WATER JOURNAL Volume 2, Number 1 2011 ISSN 2160-5319 texaswaterjournal.org THE TEXAS WATER JOURNAL is an online, peer-reviewed journal devoted to the timely consideration of Texas water resources management and policy issues. The jour- nal provides in-depth analysis of Texas water resources management and policies from a multidisciplinary perspective that integrates science, engineering, law, planning, and other disciplines. It also provides updates on key state legislation and policy changes by Texas administrative agencies. For more information on TWJ as well as TWJ policies and submission guidelines, please visit texaswaterjournal.org. Editor-in-Chief Managing Editor Todd H. Votteler, Ph.D. Kathy Wythe Guadalupe-Blanco River Authority Texas Water Resources Institute Texas A&M Institute of Renewable Natural Resources Editorial Board Kathy A. Alexander Layout Editor Leslie Lee Robert Gulley, Ph.D. Texas Water Resources Institute Texas A&M Institute of Renewable Natural Resources Texas A&M Institute of Renewable Natural Resources Robert Mace, Ph.D. Website Editor Texas Water Development Board Jaclyn Tech Texas Water Resources Institute Todd H. Votteler, Ph.D. Texas A&M Institute of Renewable Natural Resources Guadalupe-Blanco River Authority Ralph A. Wurbs, Ph.D. Texas Water Resources Institute The Texas Water Journal is published in cooperation with the Texas Water Resources Institute, part of Texas AgriLife Research, the Texas AgriLife Extension Service, and the College of Agriculture and Life Sciences at Texas A&M University. Cover photo: Texas Parks and Wildlife Department 97 Texas Water Resources Institute Texas Water Journal Volume 2, Number 1, Pages 97–111, December 2011 History of Water and Habitat Improvement in the Nueces Estuary, Texas, USA Erin M.
    [Show full text]
  • Effects on Benthic Macrofauna from Pumped Flows in Rincon Bayou
    Effects on Benthic Macrofauna from Pumped Flows in Rincon Bayou Annual Report CBBEP Publication – 110 Project Number –1517 August 2015 Prepared by: Dr. Paul A. Montagna, Principal Investigator Harte Research Institute for Gulf of Mexico Studies Texas A&M University-Corpus Christi 6300 Ocean Dr., Unit 5869 Corpus Christi, Texas 78412 Phone: 361-825-2040 Email: [email protected] Submitted to: Coastal Bend Bays & Estuaries Program 615 N. Upper Broadway, Suite 1200 Corpus Christi, TX 78401 The views expressed herein are those of the authors and do not necessarily reflect the views of CBBEP or other organizations that may have provided funding for this project. Effects on Benthic Macrofauna from Pumped Flows in Rincon Bayou Principal Investigator: Dr. Paul A. Montagna Co-Authors: Meredith Herdener Harte Research Institute for Gulf of Mexico Studies Texas A&M University - Corpus Christi 6300 Ocean Drive, Unit 5869 Corpus Christi, Texas 78412 Phone: 361-825-2040 Email: [email protected] Final report submitted to: Coastal Bend Bays & Estuaries Program, Inc. 615 N. Upper Broadway, Suite 1200 Corpus Christi, TX 78401 CBBEP Project Number 1517 August 2015 Cite as: Montagna, P.A. and M. Herdener. 2015. Effects on Benthic Macrofauna from Pumped Flows in Rincon Bayou. Final Report to the Coastal Bend Bays & Estuaries Program for Project # 1517. Harte Research Institute, Texas A&M University-Corpus Christi, Corpus Christi, Texas, 20 pp. Abstract Decreased inflow due to damming of the Nueces and Frio Rivers has resulted in increasing salinity in Nueces Bay and caused Rincon Bayou to become a reverse estuary disturbing the overall hydrology of the adjacent Corpus Christi Bay.
    [Show full text]
  • Thelepus Crispus Class: Polychaeta, Sedentaria, Canalipalpata
    Phylum: Annelida Thelepus crispus Class: Polychaeta, Sedentaria, Canalipalpata Order: Terebellida, Terebellomorpha A terebellid worm Family: Terebellidae, Theleponinae Description (Hartman 1969). Notosetae present from Size: Individuals range in size from 70–280 second branchial segment (third body mm in length (Hartman 1969). The greatest segment) and continue almost to the worm body width at segments 10–16 is 13 mm (88 posterior (to 14th segment from end in mature –147 segments). The dissected individual specimens) (Hutchings and Glasby 1986). All on which this description is based was 120 neurosetae short handled, avicular (bird-like) mm in length (from Coos Bay, Fig. 1). uncini, imbedded in a single row on oval- Color: Pinkish orange and cream with bright shaped tori (Figs. 3, 5) where the single row red branchiae, dark pink prostomium and curves into a hook, then a ring in latter gray tentacles and peristomium. segments (Fig. 3). Each uncinus bears a General Morphology: Worm rather stout thick, short fang surmounted by 4–5 small and cigar-shaped. teeth (Hartman 1969) (two in this specimen) Body: Two distinct body regions consisting (Fig. 4). Uncini begin on the fifth body of a broad thorax with neuro- and notopodia segment (third setiger), however, Johnson and a tapering abdomen with only neuropo- (1901) and Hartman (1969) have uncini dia. beginning on setiger two. Anterior: Prostomium reduced, with Eyes/Eyespots: None. ample dorsal flap transversely corrugated Anterior Appendages: Feeding tentacles are dorsally (Fig. 5). Peristomium with circlet of long (Fig. 1), filamentous, white and mucus strongly grooved, unbranched tentacles (Fig. covered. 5), which cannot be retracted fully (as in Am- Branchiae: Branchiae present (subfamily pharctidae).
    [Show full text]
  • 28.6-ACRE WATERFRONT RESIDENTIAL DEVELOPMENT OPPORTUNITY 28.6 ACRES of Leisure on the La Buena Vida Texas Coastline
    La Buena Rockport/AransasVida Pass, Texas 78336 La Buena Vida 28.6-ACRE WATERFRONT RESIDENTIAL DEVELOPMENT OPPORTUNITY 28.6 ACRES Of leisure on the La Buena Vida Texas coastline. ROCKPORT/ARANSAS PASS EXCLUSIVE WATERFRONT COMMUNITY ACCESSIBILITY Adjacent to Estes Flats, Redfish Bay & Aransas Bay, popular salt water fishing spots for Red & Black drum Speckled Trout, and more. A 95-acre residential enclave with direct channel access to the Intracoastal IDEAL LOCATION Waterway, Redfish Bay, and others Nestled between the two recreational’ sporting towns of Rockport & Aransas Pass. LIVE OAK COUNTRY CLUB TX-35 35 TEXAS PALM HARBOR N BAHIA BAY ISLANDS OF ROCKORT LA BUENA VIDA 35 TEXAS CITY BY THE SEA TX-35 35 TEXAS ARANSAS BAY GREGORY PORT ARANSAS ARANSAS McCAMPBELL PASS PORTER AIRPORT 361 SAN JOSE ISLAND 361 361 INGLESIDE INGLESIDE ON THE BAY REDFISH BAY PORT ARANSAS MUSTANG BEACH AIRPORT SPREAD 01 At Home in Rockport & Aransas Pass Intimate & Friendly Coastal Community RECREATIONAL THRIVING DESTINATION ARTS & CULTURE Opportunity for fishing, A strong artistic and waterfowl hunting, cultural identity boating, water sports, • Local art center camping, hiking, golf, etc. • Variety of galleries • Downtown museums • Cultural institutions NATURAL MILD WINTERS & PARADISE WARM SUMMERS Featuring some of the best Destination for “Winter birdwatching in the U.S. Texans,” those seeking Home to Aransas National reprieve from colder Wildlife Refuge, a protected climates. haven for the endangered Whooping Crane and many other bird and marine species. SPREAD 02 N At Home in Rockport & Aransas Pass ARANSAS COUNTY AREA ATTRACTIONS & AIRPORT AMENITIES FULTON FULTON BEACH HARBOUR LIGHT PARK SALT LAKE POPEYES COTTAGES PIZZA HUT HAMPTON INN IBC BANK THE INN AT ACE HARDWARE FULTON ELEMENTARY FULTON HARBOUR SCHOOL ENROLLMENT: 509 THE LIGHTHOUSE INN - ROCKPORT FM 3036 BROADWAY ST.
    [Show full text]
  • FY 2021 Operating Budget
    Annual Budget 2020-2021 Presented to City Council September 14, 2020 City of Aransas Pass, Texas Pass, Aransas of City CITY OF ARANSAS PASS, TEXAS FY 2020-2021 ANNUAL BUDGET CITY OF ARANSAS PASS ANNUAL OPERATING BUDGET FOR FISCAL YEAR 2020-2021 This budget will raise more total property taxes than last year’s budget by an amount of $473,814 (General Fund $289,0217 and Debt Service Fund $184,787), which is a 10.81% increase from last year’s budget. The property tax revenues to be raised from new property added to the tax roll this year is $278,536. City Council Recorded Vote The recoded vote for each member of the governing body voted by name voting on the adoption of the Fiscal Year 2020 (FY 2020) budget as follows: September 14, 2020 Ram Gomez, Mayor Jan Moore, Mayor Pro Tem Billy Ellis, Councilman Carrie Scruggs, Councilwoman Vick Abrego, Councilwoman Tax Rate Adopted FY 19-20 Adopted FY 20-21 Property Tax Rate $0.799194 $0.799194 No-New-Revenue Tax Rate $0.715601 $0.764378 NNR M&O Tax Rate $0.451317 $0.466606 Voter Approval Tax Rate $0.799194 $0.818847 Debt Rate $0.311772 $0.314914 At the end of FY 2020, the total debt obligation (outstanding principal) for the City of Aransas Pass secured by property taxes is $11,870,000. More information regarding the City’s debt obligation, including payment requirements for current and future years, can be found in the Debt Service Funds section of the budget document. i CITY OF ARANSAS PASS, TEXAS FY 2020-2021 ANNUAL BUDGET ii CITY OF ARANSAS PASS, TEXAS FY 2020-2021 ANNUAL BUDGET TABLE OF CONTENTS
    [Show full text]
  • Beach and Bay Access Guide
    Texas Beach & Bay Access Guide Second Edition Texas General Land Office Jerry Patterson, Commissioner The Texas Gulf Coast The Texas Gulf Coast consists of cordgrass marshes, which support a rich array of marine life and provide wintering grounds for birds, and scattered coastal tallgrass and mid-grass prairies. The annual rainfall for the Texas Coast ranges from 25 to 55 inches and supports morning glories, sea ox-eyes, and beach evening primroses. Click on a region of the Texas coast The Texas General Land Office makes no representations or warranties regarding the accuracy or completeness of the information depicted on these maps, or the data from which it was produced. These maps are NOT suitable for navigational purposes and do not purport to depict or establish boundaries between private and public land. Contents I. Introduction 1 II. How to Use This Guide 3 III. Beach and Bay Public Access Sites A. Southeast Texas 7 (Jefferson and Orange Counties) 1. Map 2. Area information 3. Activities/Facilities B. Houston-Galveston (Brazoria, Chambers, Galveston, Harris, and Matagorda Counties) 21 1. Map 2. Area Information 3. Activities/Facilities C. Golden Crescent (Calhoun, Jackson and Victoria Counties) 1. Map 79 2. Area Information 3. Activities/Facilities D. Coastal Bend (Aransas, Kenedy, Kleberg, Nueces, Refugio and San Patricio Counties) 1. Map 96 2. Area Information 3. Activities/Facilities E. Lower Rio Grande Valley (Cameron and Willacy Counties) 1. Map 2. Area Information 128 3. Activities/Facilities IV. National Wildlife Refuges V. Wildlife Management Areas VI. Chambers of Commerce and Visitor Centers 139 143 147 Introduction It’s no wonder that coastal communities are the most densely populated and fastest growing areas in the country.
    [Show full text]
  • Benthic Macroinvertebrate Sampling
    Benthic Macroinvertebrate Sampling Norton Basin, Little Bay, Grass Hassock Channel, and the Raunt Submitted to: The Port Authority of New York and New Jersey New York State Department of Environmental Conservation Submitted by: Barry A. Vittor & Associates, Inc. Kingston, NY February 2003 TABLE OF CONTENTS 1.0 INTRODUCTION...............................................................................................1 2.0 STUDY AREA......................................................................................................3 2.1 Norton Basin........................................................................................................ 3 2.2 Little Bay ............................................................................................................. 3 2.3 Reference Areas.................................................................................................... 3 2.3.1 The Raunt .................................................................................................... 3 2.3.2 Grass Hassock Channel ............................................................................... 4 3.0 METHODS..........................................................................................................4 3.1 Benthic Grab Sampling......................................................................................... 4 4.0 RESULTS.............................................................................................................7 4.1 Benthic Macroinvertebrates................................................................................
    [Show full text]
  • FAU Institutional Repository
    FAU Institutional Repository http://purl.fcla.edu/fau/fauir This paper was submitted by the faculty of FAU’s Harbor Branch Oceanographic Institute. Notice: ©1980 Springer. This manuscript is an author version with the final publication available at http://www.springerlink.com and may be cited as: Eckelbarger, K. J. (1980). An ultrastructural study of oogenesis in Streblospio benedicti (Spionidae), with remarks on diversity of vitellogenic mechanisms in Polychaeta. Zoomorphologie, 94(3), 241‐263. doi:10.1007/BF00998204 euLO ~ \ Zoomorphologie 94,241 -263 (1980) Zoomorphologie © by Springer-Verlag 1980 An Ultrastructural Study of Oogenesis in Streblospio benedicti (Spionidae) , with Remarks on Diversity of Vitellogenic Mechanisms in Polychaeta Kevin J. Eckelbarger* Harbor Branch Foundation, Inc.,RR I, Boxl96,Fort Pierce, Fla. 33450, USA . Summary. The ultrastructural features of oogenesis were examined in the spionid polychaete Streblospio benedicti. Paired ovaries are attached to the genital blood vessels extending into the coe lomic space from the circumintes­ tinal sinus. The genital blood vessel wall is composed of flattened, peritoneal cells, large follicle cells and developing oocytes. Vitellogenesis occurs while the oocytes are attached to the blood vessel wall. Two morphologically distinguishable types of yolk are synthesized. Type I is synthesized first by an autosynthetic process apparently involving pinocytosis and the conjoined efforts of the Golgi complex and rough endoplasmic reticulum. Type II yolk appears later through a heterosynthetic process involving the infolding of the oolemma and the sequestering of materials from the blood vessel lumen by endocytosis. During this process, blood pigment molecules appear to be incorporated into endocytotic pits, vesicles and eventually the forming yolk body.
    [Show full text]
  • The Genome of the Poecilogonous Annelid Streblospio Benedicti Christina Zakas1, Nathan D
    bioRxiv preprint doi: https://doi.org/10.1101/2021.04.15.440069; this version posted April 16, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. The genome of the poecilogonous annelid Streblospio benedicti Christina Zakas1, Nathan D. Harry1, Elizabeth H. Scholl2 and Matthew V. Rockman3 1Department of Genetics, North Carolina State University, Raleigh, NC, USA 2Bioinformatics Research Center, North Carolina State University, Raleigh, NC, USA 3Department of Biology and Center for Genomics & Systems Biology, New York University, New York, NY, USA [email protected] [email protected] Abstract Streblospio benedicti is a common marine annelid that has become an important model for developmental evolution. It is the only known example of poecilogony, where two distinct developmental modes occur within a single species, that is due to a heritable difference in egg size. The dimorphic developmental programs and life-histories exhibited in this species depend on differences within the genome, making it an optimal model for understanding the genomic basis of developmental divergence. Studies using S. benedicti have begun to uncover the genetic and genomic principles that underlie developmental uncoupling, but until now they have been limited by the lack of availability of genomic tools. Here we present an annotated chromosomal-level genome assembly of S. benedicti generated from a combination of Illumina reads, Nanopore long reads, Chicago and Hi-C chromatin interaction sequencing, and a genetic map from experimental crosses. At 701.4 Mb, the S. benedicti genome is the largest annelid genome to date that has been assembled to chromosomal scaffolds, yet it does not show evidence of extensive gene family expansion, but rather longer intergenic regions.
    [Show full text]
  • Drought Contingency Plan 2021
    Drought Contingency Plan 2021 City of Aransas Pass, Texas Table of Contents 1. Introduction . 1 2. Declaration of Policy, Purpose, and Intent . 1 3. Public Education . 2 4. Coordination with Regional Water Planning Groups . 2 5. Authorization . .2 6. Application . .3 7. Definitions . 3 8. Criteria for Initiation and Termination of Drought Response Stages . .4 8.1 Stage 1 – Mild Water Shortage Condition .......................................................................... 5 8.2 Stage 2 – Moderate Water Shortage Condition ................................................................. 5 8.3 Stage 3 –Critical Water Shortage Condition ....................................................................... 5 8.4 Stage 4 – Emergency Water Shortage Condition ............................................................... 5 9. Drought Stages Response Notification . .6 10. Reservoir System, Best Management Practices and Restrictions . .6 10.1. Stage 1 – Mild Water Shortage Conditions ............................................................................. 7 10.2. Stage 2 – Moderate Water Shortage Conditions .................................................................... 8 10.3. Stage 3 –Critical Water Shortage Conditions .......................................................................... 9 10.4. Stage 4 –Emergency Water Storage Condition ..................................................................... 10 11. Surcharges for Drought Stages 4-5 and Service Measures . 11 12. Requests for Exemptions and Variances.. .18
    [Show full text]