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Articles 1 - 30 of 117
Full-Text Articles in Life Sciences
The Decline In Monarch Butterfly, Danaus Plexippus, Populations: An Example Of The Global Threat To Biodiversity, Olivia Sidoti
The Decline In Monarch Butterfly, Danaus Plexippus, Populations: An Example Of The Global Threat To Biodiversity, Olivia Sidoti
Honors Projects
Biodiversity encompasses the variety of all life on Earth and how these aspects of nature interact with each other. To have stable and abundant biodiversity, vast amounts of species and organisms are required within an ecosystem. As a result of the increase in negative impacts of human activities and behaviors on the health of nature, biodiversity has been decreasing. An example of the decrease in biodiversity is depicted by the recent decline of the monarch butterfly species. The monarch butterfly is an iconic North American insect that is experiencing a decline in its population due to threats such as deforestation, …
Hydropower To The People: Implications Of A Comparative Macroinvertebrate Study On Either Side Of The Central Hidroeléctrica Topo In Tungurahua, Ecuador, Grace Mazur
Independent Study Project (ISP) Collection
This study uses macroinvertebrates as bioindicators to assess the water quality upstream and downstream of a hydroelectric project in Ecuador’s eastern cloud forest. Ecuador has increasingly turned to hydropower to supply its energy needs as pressure mounts to turn away from fossil fuels. This transition has been realized on the Río Topo, located in the province of Tungurahua. This study aims to determine how the Central Hidroeléctrica Topo (CHT), a diversion hydroelectric project (HEP) constructed on the Río Topo in the 2010s, has affected the water quality of the river. Samples were taken of benthic (bottom-dwelling) macroinvertebrates in the Río …
Cutaneous Microbiome Of Red Fox (Vulpes Vulpes) Infected With Sarcoptic Mange (Sarcoptes Scabiei), Jacqueline C. Robidoux
Cutaneous Microbiome Of Red Fox (Vulpes Vulpes) Infected With Sarcoptic Mange (Sarcoptes Scabiei), Jacqueline C. Robidoux
Honors Theses and Capstones
Sarcoptic mange is a parasitic skin disease that affects countless mammals worldwide, including red foxes (Vulpes vulpes). The symptoms, such as hair loss, crusting, and the number of mites, vary between individual foxes. Sarcoptic mange damages the skin barrier, which in turn disrupts the biodiversity of bacteria in the microbiome. It is unknown what the biodiversity of bacteria is at each stage of the disease. This experiment will compare the microbiomes of different samples with and without mange; in hopes to reveal a connection between the different severities of sarcoptic mange and the biodiversity of bacteria and fungi …
Biodiversity Of Philippine Marine Fishes: A Dna Barcode Reference Library Based On Voucher Specimens, Katherine E. Bemis, Matthew G. Girard, Mudjekeewis D. Santos, Kent E. Carpenter, Jonathan R. Deeds, Diane E. Pitassy, Nicko Amor L. Flores, Elizabeth S. Hunter, Amy C. Driskell, Kenneth S. Macdonald Iii, Lee A. Weigt, Jeffrey T. Williams
Biodiversity Of Philippine Marine Fishes: A Dna Barcode Reference Library Based On Voucher Specimens, Katherine E. Bemis, Matthew G. Girard, Mudjekeewis D. Santos, Kent E. Carpenter, Jonathan R. Deeds, Diane E. Pitassy, Nicko Amor L. Flores, Elizabeth S. Hunter, Amy C. Driskell, Kenneth S. Macdonald Iii, Lee A. Weigt, Jeffrey T. Williams
Biological Sciences Faculty Publications
Accurate identification of fishes is essential for understanding their biology and to ensure food safety for consumers. DNA barcoding is an important tool because it can verify identifications of both whole and processed fishes that have had key morphological characters removed (e.g., filets, fish meal); however, DNA reference libraries are incomplete, and public repositories for sequence data contain incorrectly identified sequences. During a nine-year sampling program in the Philippines, a global biodiversity hotspot for marine fishes, we developed a verified reference library of cytochrome c oxidase subunit I (COI) sequences for 2,525 specimens representing 984 species. Specimens were primarily purchased …
Postmucilage Biodiversity Of Shallow Water Fish Assemblages: A Case Study In The Marmara Sea, Turkey, İsmai̇l Burak Daban, Yusuf Şen, Adnan Ayaz, Uğur Altinağaç, Alkan Özteki̇n, Uğur Özeki̇nci̇, Ali̇ İşmen, Fi̇kret Çakir, Ahsen Yüksek, Teki̇n Demi̇rkiran, Oğuzhan Ayaz, Gençtan Erman Uğur, Bumi̇nhan Burkay Selçuk
Postmucilage Biodiversity Of Shallow Water Fish Assemblages: A Case Study In The Marmara Sea, Turkey, İsmai̇l Burak Daban, Yusuf Şen, Adnan Ayaz, Uğur Altinağaç, Alkan Özteki̇n, Uğur Özeki̇nci̇, Ali̇ İşmen, Fi̇kret Çakir, Ahsen Yüksek, Teki̇n Demi̇rkiran, Oğuzhan Ayaz, Gençtan Erman Uğur, Bumi̇nhan Burkay Selçuk
Turkish Journal of Zoology
A dense mucilage event occurred between November 2020 and August 2021 in the Marmara Sea, Turkey. In this study, the aim was to understand the effect of mucilage on coastal fish biodiversity. For this purpose, juvenile and small-sized adult fish species were sampled with an experimental beach seine at 12 equally-spaced stations around the Marmara Sea between November 2021 and April 2022. In total, 34 species belonging to 19 families were sampled. Approximately 70% of the total fish abundance were Atherina boyeri Risso, 1810, Chelon auratus (Risso, 1810) and Chelon saliens (Risso, 1810). Highest abundance was detected from S5 …
Nexus Between Animal Welfare, Environment, And Sustainable Development: Resource Document, Wellbeing International
Nexus Between Animal Welfare, Environment, And Sustainable Development: Resource Document, Wellbeing International
Nexus – UNEP – Animal Welfare, Environment, Sustainable Development
This Resource Document has been developed to explore the Nexus (links) between Animal Welfare, the Environment, and Sustainable Development. The document includes relevant citations and reports addressing the topics encompassed by the Nexus. It will be maintained as a “living document” (subject to revision) in the WellBeing International Studies Repository. The original document and subsequent revisions will be kept in the Repository to provide a record of the changes.
Can Financialization Save Nature? The Case Of Endangered Species, Diane-Laure Arjalies, Delphine Gibassier
Can Financialization Save Nature? The Case Of Endangered Species, Diane-Laure Arjalies, Delphine Gibassier
Business Publications
The current biodiversity loss is dramatic. Over the past 50 years, more than 68% of the mammals, birds, amphibians, reptiles, and fish on earth have disappeared, putting the planet's survival and its inhabitants – including human beings – at risk (WWF, 2020). Financialization, or the transformation of nature into financial assets, is increasingly proposed as a solution to the biodiversity crisis. Proponents of financialization believe that assigning a monetary value to nature will incentivize human beings to protect habitats and their species. This article offers a four-mechanism model of nature’s financialization, explaining why it is virtually impossible to financialize nature. …
Shape Variation In Head Scales Of Species Of The Genus Ophiomorus Duméril & Bibron, 1839 In Iran, A Geometric Morphometrics Approach, Hossein Nabizadeh, Nasrullah Rastegar-Pouyani, Eskandar Rastegar Pouyani, Mehdi Rajabizadeh, Roman Nazarov, Omid Mozaffari
Shape Variation In Head Scales Of Species Of The Genus Ophiomorus Duméril & Bibron, 1839 In Iran, A Geometric Morphometrics Approach, Hossein Nabizadeh, Nasrullah Rastegar-Pouyani, Eskandar Rastegar Pouyani, Mehdi Rajabizadeh, Roman Nazarov, Omid Mozaffari
Turkish Journal of Zoology
Twelve species of the genus Ophiomorus DUMÉRIL & BIBRON, 1839 have been identified and introduced so far and seven species of this genus have been found in Iran which include four endemic species and three nonendemic species. Although geometric morphometry is a powerful tool to analyze morphological changes, the discovery and identification of these species have long relied on traditional morphometric analysis. In this study, geometric morphometric analyses were used to determine the geometric morphometrics of different species of the genus Ophiomorus in Iran. The Multi Focus technique was used to obtain the best image of the dorsal surface of …
Final Report Floating Upwelling System Harvest Road Oceans, Robert Michael, Scott Bennett
Final Report Floating Upwelling System Harvest Road Oceans, Robert Michael, Scott Bennett
Fisheries occasional publications
A Floating Upwelling System or FLUPSY is a mechanical system for the culture of seed stock during the nursery stage of commercial bivalve production.
Vertebrate Scavenger Diversity And Ecosystem Services Along An Elevational Gradient In Central Nepal, Aishwarya Bhattacharjee
Vertebrate Scavenger Diversity And Ecosystem Services Along An Elevational Gradient In Central Nepal, Aishwarya Bhattacharjee
Dissertations, Theses, and Capstone Projects
A growing number of studies recognize the ecological significance of vertebrate scavengers, and several species belonging to this diverse, functional guild are of high conservation importance around the globe. Studies on taxonomic and functional components of biodiversity often use elevation gradients to comprehensively examine patterns and drivers across multiple spatial scales. Yet, there are relatively few elevational studies on large vertebrates or multi-taxa guilds, and the related variation of their ecosystem services. In particular, scavenger research has largely focused on local-scale studies or regional/global comparisons of local-scale investigations. Moreover, these studies primarily consider taxonomic community characteristics and the patterns of …
Abundance And Distribution Of The Forest Cockroaches In Different Algerian Ecosystems, Zakaria Hedjouli, Wafa Habbachi, Fatiha Masna, Saliha Benhissen, Sarra Habbachi, Abdelmadjid Yagoub Asloum, Abdelkrim Tahraoui
Abundance And Distribution Of The Forest Cockroaches In Different Algerian Ecosystems, Zakaria Hedjouli, Wafa Habbachi, Fatiha Masna, Saliha Benhissen, Sarra Habbachi, Abdelmadjid Yagoub Asloum, Abdelkrim Tahraoui
Journal of Bioresource Management
Forests have many insect species that are unique to biodiversity and play a crucial role in the functioning of ecosystems. Forest cockroaches are the best example of forest litter insects, which also help decompose fallen leaves. The composition of the Blattoptera fauna can vary from one region to another, depending on the habitat and numerous biotic and abiotic factors In order to study the diversity, abundance, and distribution of forest cockroaches in different Algeria ecosystems, we have selected four sites from three Wilayas: Senalba (Djelfa), Ain achir (Annaba), Seraidi (Annaba), and Lehnaya (El-taref). These sites are classified into two distinct …
Vertebrates At The University Of Southern Mississippi: A Wildlife Survey Of The Bear Point Bayou And Surrounding Gulf Park Campus, Hannah Mcduffie
Vertebrates At The University Of Southern Mississippi: A Wildlife Survey Of The Bear Point Bayou And Surrounding Gulf Park Campus, Hannah Mcduffie
Honors Theses
This project originated through interest in pursuing a field-based research project involving vertebrates. After conducting literature reviews, it was found that the Bear Point Bayou running through the University of Southern Mississippi Gulf Park Campus has never been thoroughly surveyed for species richness (Mohrman et al. 2016). Four sites on the Gulf Park Campus were chosen and vertebrate species were documented and identified through observations, camera trapping, and vocalization recordings. These data, along with species previously recorded on campus, were combined, and compared to data from the Gulf Coast Phenology Trail of which the Gulf Park Campus was recently added …
Conspecific Aggression Of Invasive Crayfish, P. Clarkii, In Response To Chemical Cues, Elyse Vetter, Elise Dearment, Audrey Fontes, Gary Bucciarelli, Lee Kats
Conspecific Aggression Of Invasive Crayfish, P. Clarkii, In Response To Chemical Cues, Elyse Vetter, Elise Dearment, Audrey Fontes, Gary Bucciarelli, Lee Kats
Seaver College Research And Scholarly Achievement Symposium
Red Swamp Crayfish, Procambarus clarkii, have caused vast damage to the stream ecosystem of the Santa Monica Mountains, following their invasive introduction. Through their extensive eating habits, high levels of aggression, and responsiveness to environmental stimuli, P. clarkii have a tremendous impact on the success of native species in the Santa Monica Mountains. With exposure to chemical cues, crayfish are able to perceive threats and react accordingly. To determine the extent of such chemoreception, pairs of P. clarkii were tested in the laboratory for conspecific aggression in the presence of native newt, native frog, and conspecific alarm cues. The …
The Effects Of Symbiote Ostracods On Invasive Crayfish Behavior, Audrey Fontes, Elyse Vetter, Gary Bucciarelli, Lee Kats
The Effects Of Symbiote Ostracods On Invasive Crayfish Behavior, Audrey Fontes, Elyse Vetter, Gary Bucciarelli, Lee Kats
Seaver College Research And Scholarly Achievement Symposium
Invasive crayfish, Procambarus clarkii, are known to negatively impact the biodiversity of Santa Monica Mountain streams. Small symbiotes, ostracods, live on Procambarus clarkii in some local streams. However, their effect on the behaviour of invasive crayfish is unknown. We used an aqueous chlorobutanol solution to remove ostracods from crayfish. We paired control crayfish with those that had ostracods removed and scored aggressive interactions. Crayfish without ostracods were found to be significantly more aggressive towards crayfish with ostracods. When we compared feeding behavior, we found that crayfish without ostracods consumed food more quickly than control crayfish. We again subjected crayfish …
First Description Of Deep Benthic Habitats And Communities Of Oceanic Islands And Seamounts Of The Nazca Desventuradas Marine Park, Chile, Jan M. Tapia-Guerra, Ariadna Mecho, Erin E. Easton, María De Los Ángeles Gallardo, Matthias Gorny, Javier Sellanes
First Description Of Deep Benthic Habitats And Communities Of Oceanic Islands And Seamounts Of The Nazca Desventuradas Marine Park, Chile, Jan M. Tapia-Guerra, Ariadna Mecho, Erin E. Easton, María De Los Ángeles Gallardo, Matthias Gorny, Javier Sellanes
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
Seamounts and oceanic islands of the Chilean Exclusive Economic Zone at the intersection of the Nazca and Salas y Gómez ridges lie within one of the least explored areas in the world. The sparse information available, mainly for seamounts outside Chilean jurisdiction and shallow-water fauna of the Desventuradas Islands, suggests that the area is a hotspot of endemism. This apparent uniqueness of the fauna motivated the creation of the large Nazca-Desventuradas Marine Park (NDMP, ~ 300,000 km2) around the small islands San Felix and San Ambrosio in 2015. We report for the first time a detailed description of benthic microhabitats …
Dung Beetle (Scarabaeinae) Diversity Of The Highest Elevation In West Africa: The Nimba Mountain Range, Jacob Bowen
Dung Beetle (Scarabaeinae) Diversity Of The Highest Elevation In West Africa: The Nimba Mountain Range, Jacob Bowen
Mahurin Honors College Capstone Experience/Thesis Projects
The Nimba Mountain Range in Guinea, Ivory Coast, and Liberia is within the Upper Guinean Forests, a critical biodiversity hotspot highly threatened by various human activities. The region is home to many endemic species including the viviparous Nimba toad, Nimba otter-shrew, and the discrete Bossou chimpanzee population. Dung beetles can act as a focal taxon from which extrapolation to the diversity of other taxa and ecosystem health can be made. Elevational trends in dung beetle diversity were investigated on the Nimba Mountain Range and in the nearby Bossou Chimpanzee reserve in Guinea. Dung beetle species diversity surveys aimed to document …
Environmental Controls On The Spatial Distribution Of Greenfin Darters And Biodiversity In The Blue Ridge Mountains, Dri Tattersfield
Environmental Controls On The Spatial Distribution Of Greenfin Darters And Biodiversity In The Blue Ridge Mountains, Dri Tattersfield
CMC Senior Theses
Disproportionate concentrations of biodiversity in mountains worldwide suggest linkages between geologic processes and biodiversity that are not yet well understood. The Tennessee River Basin in the Blue Ridge Mountains of the southeastern U.S. is a global hotspot for freshwater fish biodiversity. To investigate drivers of biodiversity in the Tennessee River Basin, and explore links to geologic processes, I study the Greenfin Darter (Nothonotus chlorobranchius), a small fish endemic to the upper Tennessee River Basin. I use generalized linear models (GLMs) to evaluate the influence of topography, lithology, climate and land use on the distribution of the Greenfin Darter, …
Contributions To The Knowledge Of Water Bugs In Mindoro Island, Philippines, With A Species Checklist Of Nepomorpha And Gerromorpha (Insecta, Hemiptera, Heteroptera), Arthien Lovell Pelingen, Herbert Zettel, Clister V. Pangantihon, Kyra Mari Dominique Aldaba, Earl Kevin Fatallo, Jemillie Madonna De Leon, Hendrik Freitag
Contributions To The Knowledge Of Water Bugs In Mindoro Island, Philippines, With A Species Checklist Of Nepomorpha And Gerromorpha (Insecta, Hemiptera, Heteroptera), Arthien Lovell Pelingen, Herbert Zettel, Clister V. Pangantihon, Kyra Mari Dominique Aldaba, Earl Kevin Fatallo, Jemillie Madonna De Leon, Hendrik Freitag
Biology Faculty Publications
This survey aims to provide an updated species checklist of aquatic and semi-aquatic bugs in the intra-Philippine biogeographic Region of Mindoro. An assessment survey of water bugs (Hemiptera, Heteroptera) was conducted mostly by manual collection in selected areas of Oriental Mindoro from 2017 to 2018, in which some of the collecting activities were undertaken by graduate students of Ateneo de Manila University. Twenty-nine aquatic and semi-aquatic heteropteran species were documented and some are known island-endemic species or subspecies, including Enithares martini mindoroensis Nieser & Zettel, 1999, Hydrotrephes stereoides mindoroensis Zettel, 2003, Aphelocheirus freitagi Zettel & Pangantihon, 2010, Rhagovelia mindoroensis Zettel, …
First Contribution On Distribution, Abundance, And Species Richness Of Blowfly Species (Diptera) Of Isparta Province With Five New Records For The Turkish Fauna, Ozan Demi̇rözer, Gamze Pekbey, Rüstem Hayat, Azi̇me Herdoğan, Jelena Acanski, Marija Milicic, Asi̇ye Uzun
First Contribution On Distribution, Abundance, And Species Richness Of Blowfly Species (Diptera) Of Isparta Province With Five New Records For The Turkish Fauna, Ozan Demi̇rözer, Gamze Pekbey, Rüstem Hayat, Azi̇me Herdoğan, Jelena Acanski, Marija Milicic, Asi̇ye Uzun
Turkish Journal of Zoology
Despite the increasing importance of species richness of blowfly fauna and their environmental, medical, and agricultural importance in the world they are poorly studied in Turkey. This study was carried out in 2014 and 2015 to determine the distribution, abundance, and species richness of blowfly species in Isparta Province of Turkey. A total of 15 species (10 from Calliphoridae, 4 from Polleniidae, and 1 from Rhiniidae) were identified from 13 different localities. The adult specimens were obtained from areas of organic and decayed organic matters, waste and dumpsite, surrounding waste water deposits, and flowering plants. While all the species were …
A Survey Of The Reptiles And Amphibians At The University Of Georgia Costa Rica Field Station In San Luis De Monteverde, Costa Rica, John David Curlis, Elliot Convery Fisher, W. Kody Muhic, James Moy, Martha Garro-Cruz, José Joaquín Montero-Ramírez
A Survey Of The Reptiles And Amphibians At The University Of Georgia Costa Rica Field Station In San Luis De Monteverde, Costa Rica, John David Curlis, Elliot Convery Fisher, W. Kody Muhic, James Moy, Martha Garro-Cruz, José Joaquín Montero-Ramírez
Biological Sciences Faculty Publications
Reptiles and amphibians are experiencing declines across the globe. In Monteverde, Costa Rica, these declines and their underlying causes have been relatively well studied since the early 1990s, and many protected areas have been set aside to conserve these species. However, thorough surveys of the herpetofaunal diversity in these areas have been scarce over the last 20 years. We conducted a survey of all reptile and amphibian species at the University of Georgia Costa Rica (UGACR), a field station in San Luis de Monteverde. Herein, we present an annotated checklist of the 48 species (35 reptiles and 13 amphibians) that …
Invasive Rat Establishment And Changes In Small Mammal Populations On Caribbean Islands Following Two Hurricanes, Aaron B. Shiels, Claudia D. Lombard, Laura Shiels, Zandy Hillis-Starr
Invasive Rat Establishment And Changes In Small Mammal Populations On Caribbean Islands Following Two Hurricanes, Aaron B. Shiels, Claudia D. Lombard, Laura Shiels, Zandy Hillis-Starr
USDA Wildlife Services: Staff Publications
Invasive mammals, particularly black rats (Rattus rattus), house mice (Mus musculus), and mongoose (Herpestes auropunctatus) are established on many tropical islands and threaten natural resources such as native birds, sea turtles, lizards, invertebrates, and plants. St. Croix (U.S. Virgin Islands, Caribbean) has a diversity of natural resources being protected from invasive mammals by U.S. conservation agencies. Sandy Point National Wildlife Refuge and Buck Island Reef National Monument receive among the highest density of nesting sea turtles in the region, including annual nesting populations of 50e250 leatherbacks (Dermochelys coriacea), 25e80 hawksbills (Eretmochelys imbricata), and 100e250 green turtles (Chelonia mydas). Buck Island …
New Approach To Health And The Environment To Avoid Future Pandemics, Serge Morand
New Approach To Health And The Environment To Avoid Future Pandemics, Serge Morand
Animal Sentience
This commentary expands Wiebers & Feigin’s target article by pinpointing how declining wildlife, expanding livestock and globalisation contribute to the increase in epidemics of zoonotic diseases, the COVID-19 crisis and future health crises. Epidemics and the emergence of zoonoses are manifestations of dysfunctional links with animals, both wild and domestic, requiring a new approach to health and the environment.
Mammal Species Inventory Using Various Trapping Methods In Zone 4 Of Billy Barquedier National Park, Belize During Rainy Season, Mersady Redding
Mammal Species Inventory Using Various Trapping Methods In Zone 4 Of Billy Barquedier National Park, Belize During Rainy Season, Mersady Redding
Animal Science Undergraduate Honors Theses
Belize is a small country, but it is extremely ecologically diverse. Based on the few studies conducted in Belize, the abundance of mammals is low but diversity is high. Particular findings note the number and identity of species differed between four sites in the Maya Mountains of Belize, indicating that a data set from a single site is not representative of the Neotropical region. Insufficient data is available to estimate current species richness of many areas in Belize, including Billy Barquedier National Park (BBNP). The objective of this study was to explore trapping and documentation methods of terrestrial mammals in …
Impact Of The Human Footprint On Anthropogenic Mortality Of North American Reptiles, Jacob E. Hill, Travis L. Devault, Jerrold L. Belant
Impact Of The Human Footprint On Anthropogenic Mortality Of North American Reptiles, Jacob E. Hill, Travis L. Devault, Jerrold L. Belant
USDA Wildlife Services: Staff Publications
Human activities frequently result in reptile mortality, but how direct anthropogenic mortality compares to natural morality has not been thoroughly investigated. There has also been a limited examination of how anthropogenic reptile mortality changes as a function of the human footprint. We conducted a synthesis of causespecific North American reptile mortality studies based on telemetry, documenting 550 mortalities of known cause among 2461 monitored individuals in 57 studies. Overall 78% of mortality was the result of direct natural causes, whereas 22% was directly caused by humans. The single largest source of mortality was predation, accounting for 62% of mortality overall. …
Wildlife Survey Of National Parks To Assess Reptilian Biodiversity, Ajk, Jibran Haider, Inayatullah Malik, Sabiha Shamim
Wildlife Survey Of National Parks To Assess Reptilian Biodiversity, Ajk, Jibran Haider, Inayatullah Malik, Sabiha Shamim
Journal of Bioresource Management
The class Reptilia belongs to phylum Chordata. This group forms a large community of the land vertebrates. However, they remain relatively under-examined. Roll et al. (2017) studied the global distribution of more than 10,000 reptiles. Nearly194 reptilian species have been reported from Pakistan (WWF, n.d.). Five protected parks were studied from February 2008 to May 2010. Dhirkot Nature Reserve (DNR), Banjosa Nature Reserve (BNR), Tolipir National Park (TNP), Pir Chanasi National Park (PCNP) and Pir Lasura National Park (PLNP) were considered. Fifteen species of reptiles were observed in TNP. Ten species of reptiles were recorded from PCNP. Ten species of …
The Neotropical Variegated Squirrel, Sciurus Variegatoides (Rodentia: Sciuridae) In Nicaragua, With The Description Of A New Subspecies, Hugh H. Genoways, Robert M. Timm
The Neotropical Variegated Squirrel, Sciurus Variegatoides (Rodentia: Sciuridae) In Nicaragua, With The Description Of A New Subspecies, Hugh H. Genoways, Robert M. Timm
University of Nebraska State Museum: Mammalogy Papers
The Neotropical variegated squirrel, Sciurus variegatoides, is represented in Nicaragua by five known subspecies—adolphei, belti, boothiae, dorsalis, and underwoodi. Analyses of morphometrics, color, and color patterns of 394 specimens from throughout the country and all available literature support the retention of these subspecies, but also reveal the presence of a sixth population of these squirrels, which is worthy of description and recognition as a new subspecies. This new subspecies is confined to Isla de Ometepe in Lago de Nicaragua. Variegated squirrels on Ometepe are on average the smallest variegated squirrels in the country …
Effectiveness Of Snap And A24-Automated Traps And Broadcast Anticoagulant Bait In Suppressing Commensal Rodents In Hawaii, Aaron B. Shiels, Tyler Bogardus, Jobriath Rohrer, Kapua Kawelo
Effectiveness Of Snap And A24-Automated Traps And Broadcast Anticoagulant Bait In Suppressing Commensal Rodents In Hawaii, Aaron B. Shiels, Tyler Bogardus, Jobriath Rohrer, Kapua Kawelo
USDA Wildlife Services: Staff Publications
Commensal rodents (invasive rats, Rattus spp.; house mice, Mus musculus) are well established globally. They threaten human health by disease transfer and impact economies by causing agricultural damage. On island landscapes, they are frequent predators of native species and affect biodiversity. To provide managers with better information regarding methods to suppress commensal rodent populations in remote island forests, in 2016 we evaluated the effectiveness of continuous rat trapping using snap-traps, Goodnature® A24 self-resetting rat traps, and a 1-time (2-application) hand-broadcast of anticoagulant rodenticide bait pellets (Diphacinone-50) applied at 13.8 kg/ha per application in a 5-ha forest on Oahu, Hawaii, USA. …
Cavity Nest Webs As A Template For Studying Non-Trophic Interactions In Invasion Ecology, Joshua M. Diamond
Cavity Nest Webs As A Template For Studying Non-Trophic Interactions In Invasion Ecology, Joshua M. Diamond
FIU Electronic Theses and Dissertations
Invasive exotic animals are considered destructive forces in cities for preying on and competing with native species. I examined an aspect of competition from a different perspective, focusing on the role of Miami’s rich exotic bird assemblage in its cavity nest web, where a supply of woodpecker-created cavity nests limited by urbanization is the focal point of competition. We located 967 nest trees with 1,864 cavities and determined that woodpeckers successfully nested in this tropical urban region by exploiting standing dead palms (snags). Native upland forests were the most important cover type for woodpeckers but planted landscapes like parks and …
Hiding In The Lianas Of The Tree Of Life: Molecular Phylogenetics And Species Delimitation Reveal Considerable Cryptic Diversity Of New World Vine Snakes, Robert C. Jadin, Christopher Blair, Michael J. Jowers, Anthony Carmona, John C. Murphy
Hiding In The Lianas Of The Tree Of Life: Molecular Phylogenetics And Species Delimitation Reveal Considerable Cryptic Diversity Of New World Vine Snakes, Robert C. Jadin, Christopher Blair, Michael J. Jowers, Anthony Carmona, John C. Murphy
Publications and Research
The Brown Vine Snake, Oxybelis aeneus, is considered a single species despite the fact its distribution covers an estimated 10% of the Earth’s land surface, inhabiting a variety of ecosystems throughout North, Central, and South America and is distributed across numerous biogeographic barriers. Here we assemble a multilocus molecular dataset (i.e. cyt b, ND4, cmos, PRLR) derived from Middle American populations to examine for the first time the evolutionary history of Oxybelis and test for evidence of cryptic lineages using Bayesian and maximum likelihood criteria. Our divergence time estimates suggest that Oxybelis diverged from its sister genus, Leptophis …
The Intrinsic Value Of Nature, Joanna E. Lambert
The Intrinsic Value Of Nature, Joanna E. Lambert
Animal Sentience
Treves et al. explain the need to preserve the rights of nonhuman species, human youth, and future generations. Although conservation biology has claimed to have an intrinsic valuation ethic since its inception in the 1980s, many aspects of the field have taken a decidedly anthropocentric and instrumentalist trajectory. This has important consequences for conservation-related policy and practice at all scales: local, regional, and global.