Life Sciences Commons^™

Prevalence Of Cymothoidae (Isopoda) Infestation In Bigeye Scad (Selar Crumenophtalmus) From Batangas, Philippines, Tanya Faye S. Muji, Joaquin R. Sorreta, Janice A. Ragaza

Biology Faculty Publications

Cymothoid isopod research is relatively scarce in the Philippines, despite the local economic significance of bigeye scad as an inexpensive source of protein and other nutrients. Isopod parasitism has also been shown to have detrimental effects on their fish hosts. The current study aimed to define the host-parasite relationship between cymothoid isopod and bigeye scad by determining cymothoid isopod prevalence, intensity, and host-parasite length correlations in bigeye scad (Selar crumenophthalmus) hosts sourced from Batangas, Philippines. Fish samples were sampled from the Tagaytay City Market in Cavite, which sources fish directly from Batangas. Fish samples were immediately measured and …

Conservation Status And Natural History Of Ctenomys, Tuco-Tucos In Bolivia, Scott Lyell Gardner, Sebastian Botero-Cañola, Enzo Aliaga Rossel, Altangerel Tsogtsaikhan Dursahinhan, Jorge A. Salazar-Bravo

Scott L. Gardner Publications

The genus Ctenomys consists of about 70 species and in addition to the Geomyidae of the Nearctic, Neotropical tuco-tucos represent a well-documented case of diversification in the subterranean biotype. Here we will: i) Provide an updated summary of the natural history of the 12 species of extant tuco-tucos from Bolivia; ii) Update information on distributions of each species; and iii) Using ecological niche modeling, evaluate recent and projected habitat transformation or habitat degradation within the known range of each species to provide a preliminary assessment of the preservation or conservation status of ctenomyids within Bolivia. We follow Gardner et al. …

Cooperative Feeding In Common Dolphins As Suggested By Ontogenetic Patterns In Δ15N Bulk And Amino Acids, Rocio I. Ruiz-Cooley, Tim Gerrodette, Susan Chivers, Kerri Danil

United States Department of Commerce: Staff Publications

1. Understanding the effect of stage-specific traits on species feeding habits can reveal how natural selection shapes life strategies. Amino acid (AA) nitrogen stable isotopes (δ¹⁵N) provide multiple proxies of habitat baseline values and diet that can improve our understanding of species feeding strategies relative to their animal metabolism. We evaluated the effect of body length as a proxy for life stage and sex on the feeding habits of the common dolphin Delphinus delphis delphis using δ¹³C and δ¹⁵N in bulk tissue and AAs δ¹⁵N from skin samples collected for almost two …

Incorporating Animal Movement Into Distance Sampling, R. Glennie, S. T. Buckland, R. Langrock, Tim Gerrodette, Susan Chivers, M. D. Scott

United States Department of Commerce: Staff Publications

Distance sampling is a popular statistical method to estimate the density of wild animal populations. Conventional distance sampling represents animals as fixed points in space that are detected with an unknown probability that depends on the distance between the observer and the animal. Animal movement can cause substantial bias in density estimation. Methods to correct for responsive animal movement exist, but none account for nonresponsive movement independent of the observer. Here, an explicit animal movement model is incorporated into distance sampling, combining distance sampling survey data with animal telemetry data. Detection probability depends on the entire unobserved path the animal …

Blood Parasites Of Fish Of The Baikal Basin, T. R. Khamnueva, Darima R. Baldanova

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Eight species of trypanosomes were found in nine species of fish in the Lake Baikal: Trypanosoma percae, T. amurensis, T. schulmani, T. dogieli, T. magna, T. sp.1, T. sp.2. Five species of trypanoplasms were detected in the blood of 13 species of Baikal fish: Trypanoplasma lomakini, T. littoralis, T. cotti, T. zaikai, T. sp. In the erythrocytes of the sand sculpin, Leocottus kesslerii were observed haemogregarins.

The First Detection Of Ceratophyllus Fleas And An Ischnocera Louse On The Great Cormorant Phalacrocorax Carbo In Mongolia, Daniel Kiefer, Michael Stubbe, Annegret Stubbe, Volker Neumann, Sundev Gombobaatar, Davaa Lchagvasuren, Mathias Kiefer

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

There are summarized data on ectoparasites of Mongolian birds. The Mongolian-German Biological Expeditions found first records for the flea Ceratophyllus vagabundus and the Ischnocera louse Pectinopygus gyricornis at the host Phalacrocorax carbo.

Records Of Hippoboscidae From Mongolian Birds Of Prey With Checklist, Update, Matthias Jentzsch, Benjamin Meissner, Nayamsuren Batsaikhan, Annegret Stubbe, Michael Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The hippoboscid species Ornithophila gestroi has been rediscovered from Mongolia. It is the easternmost of all the known occurrences. Specimens were collected from Amur Falcon Falco amurensis, Saker Falcon Falco cherrug, Lesser Kestrel Falco naumanni, Eurasian Hobby, Falco subbuteo, Common Kestrel Falco tinnunculus Linnaeus, 1758 and Black Kite Milvus migrans in a breeding area located in southern Mongolia. Amur Falcon, Eurasian Hobby and Black Kite were identified as hosts of O. gestroi for the first time.

Progress On Research Regarding Ecology And Biodiversity Of Coastal Fisheries And Nektonic Species And Their Habitats Within Coastal Landscapes, Mark S. Peterson, Michael J. Andres

Faculty Publications

This paper aims to highlight the new research and significant advances in our understanding of links between coastal habitat quality/quantity/diversity and the diversity of fisheries species and other mobile aquatic species (hereafter nekton) that use them within coastal landscapes. This topic is quite diverse owing to the myriad of habitat types found in coastal marine waters and the va-riety of life history strategies fisheries species and nekton use in these environments. Thus, we focus our mini-review on five selective but relevant topics, habitat templates, essential fish habitat, habitat mosaics/habitat connectivity, transitory/ephemeral habitat, and the emerging/maturing approaches to the study of …

Phylogenomics Reveals Ancient And Contemporary Gene Flow Contributing To The Evolutionary History Of Sea Ducks (Tribe Mergini), Philip Lavretsky, Robert E. Wilson, Sandra L. Talbot, Sarah A. Sonsthagen

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Insight into complex evolutionary histories continues to build through broad comparative phylogenomic and population genomic studies. In particular, there is a need to understand the extent and scale that gene flow contributes to standing genomic diversity and the role introgression has played in evolutionary processes such as hybrid speciation. Here, we investigate the evolutionary history of the Mergini tribe (sea ducks) by coupling multi-species comparisons with phylogenomic analyses of thousands of nuclear ddRAD-seq loci, including Z-sex chromosome and autosomal linked loci, and the mitogenome assayed across all extant sea duck species in North America. All sea duck species are strongly …

Text Mining To Identify The Origin Of Chronic Wasting Disease, G. Webb

Faculty Research, Scholarly, and Creative Activity

Chronic wasting disease (CWD) is a 100 percent fatal, prion disease of deer that has the potential to decimate the deer population and jump to the human population. A simple Google search on the “origin of chronic wasting disease” yielded a total of 56 relevant articles. Of these, 75 percent report that the origin is unknown, 19.6 percent report that the disease may have originated in a Fort Collins, Colorado, government research facility, and 5.4 percent report other possible origins. Government sources reported the Fort Collins theory 4.3 percent of the time while non-governmental sources, such as news articles, reported …

A Summary Of Collaborative Discussions On Existing Management Within The Channeled Whelk, Samantha E. Askin, Robert A. Fisher

Reports

In 2014 during the 16th International Conference on Shellfish Restoration, representatives from states along the U.S. Atlantic coast from Massachusetts to Georgia discussed various strategies for management of the channeled whelk fishery. The purpose of that meeting was to initiate a collaborative effort among industry, academia, and regulatory agencies to address concerns related to the channeled whelk resource and to provide guidelines for the development of a sustainable whelk fishery along the U.S. Atlantic coast (Fisher 2015a). This was the first documented attempt to bring state managers together to address inconsistencies involved with what is known about channeled whelk biology …

Monitoring Living Marine Resources In The Mid‐Atlantic Bight, Northeast Area Monitoring & Assessment Program (Neamap), Virginia Shark Monitoring & Assessment Program (Vasmap), Robert J. Latour, James Gartland, Christopher F. Bonzek

Reports

The NEAMAP Mid‐Atlantic/Southern New England (M‐A/SNE) Near Shore Bottom Trawl Survey is a fishery‐independent monitoring program designed to collect information on the late juvenile and adult stages of the majority of the finfish species and several exploited invertebrates inhabiting the coastal ocean of the Mid‐Atlantic Bight Ecological Production Unit (Figure 1). This survey yields indices of relative abundance, expressed in terms of both number and biomass, spatiotemporal distribution, and length‐frequency data for all species collected by the sampling gear.

VASMAP is a research program that focuses on advancing the scientific enterprise associated with juvenile and adult stages of several shark …

2021 Annual Report Estimating Relative Juvenile Abundance Of Ecologically Important Finfish In The Virginia Portion Of Chesapeake Bay (1 July 2020 – 30 June 2021), Troy D. Tuckey, Mary C. Fabrizio

Reports

The Trawl Survey provides crucial data to state, regional, and national fisheries management agencies, including the Virginia Marine Resources Commission (VMRC), the Atlantic States Marine Fisheries Commission (ASMFC), the Mid‐Atlantic Fisheries Management Council (MAFMC), and the National Marine Fisheries Service (NMFS). The MAFMC recognizes the juvenile trawl survey as one of the key predictors of Summer Flounder recruitment. Annual indices of juvenile abundance have been generated from trawl survey data for species of key recreational and ecological importance in the Virginia portion of Chesapeake Bay. These include Spot, Atlantic Croaker, Weakfish, Summer Flounder, Black Sea Bass, Scup, Striped Bass, White …

Influence Of Gonadal Stage And Ploidy On Human-Pathogenic Vibrio Levels In The Oyster Crassostrea Virginica - Final Report, Corinne Audemard, Ryan Carnegie, Kimberly S. Reece

Reports

To determine whether oyster reproductive status and particularly ploidy influences levels of human-pathogenic Vibrio spp. in oyster tissues was the overall aim of this project

Our project objectives were three-fold:

1) To determine the relationship between oyster gonadal stage and levels of humanpathogenic Vibrio spp. in two separate pairs of genetically related diploid and triploid oysters through analyses of individual oysters conducted during peak Vibrio season in the York River, Virginia;

2) To determine the relationship between oyster ploidy and levels of humanpathogenic Vibrio spp. in those same oysters; and

3) To determine the degree to which farm-level marine aquaculture …