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Articles 31 - 60 of 378
Full-Text Articles in Animal Sciences
What Sets Us Apart Could Be Our Salvation, Anne Fawcett, Paul Mcgreevy
What Sets Us Apart Could Be Our Salvation, Anne Fawcett, Paul Mcgreevy
Paul McGreevy, PhD
We agree with Chapman & Huffman that human capacities are often assumed to be unique — or attempts are made to demonstrate uniqueness scientifically — in order to justify the exploitation of animals and ecosystems. To extend the argument that human exceptionalism is against our interests, we recommend adopting the One Welfare framework, according to which animal welfare, environmental sustainability and human wellbeing are inseparably linked. Let us distinguish ourselves from other animals by resisting our short- and mid-term Darwinian inclinations, consuming less, reproducing less, and striving for a much longer-term biological fitness for us all.
Farm Animals Are Not Humans In Sheep Clothing, Lorenz Gygax, Christian Nawroth
Farm Animals Are Not Humans In Sheep Clothing, Lorenz Gygax, Christian Nawroth
Christian Nawroth, PhD
Research on the mental lives of farm animals is crucial to assess not only their physical but also their psychological wellbeing. Their current housing and handling practices are highly unlikely to meet their cognitive needs and demands, but our knowledge of their mental capacities is still limited. Although folk wisdom often refers to farm animals as dull and inflexible, recent studies show they have a rich interpretation of their environment and can solve complex problems. Yet an uncritical and anthropomorphic assessment of farm animal cognition and behaviour may lead to the attribution of an exaggerated amount of cognitive flexibility. Contrary …
Varanus Panoptes (Yellow-Spotted Monitor) Toxic Prey Avoidance, J. Sean Doody, Hugh James, Christopher Walmsley, David Rhind, Matt Edgar, Maik Fidel, Domenic D'Amore, Simon Clulow, Colin Mchenry
Varanus Panoptes (Yellow-Spotted Monitor) Toxic Prey Avoidance, J. Sean Doody, Hugh James, Christopher Walmsley, David Rhind, Matt Edgar, Maik Fidel, Domenic D'Amore, Simon Clulow, Colin Mchenry
J. Sean Doody
No abstract provided.
Strophurus Ciliaris (Northern Spiny-Tailed Gecko) Communal Nesting, J. Sean Doody, Huge James, Derek Dunlop, Domenic D'Amore, Matt Edgar, Maik Fidel, David Meadows, Christopher Walmsley, Simon Clulow, Colin Mchenry
Strophurus Ciliaris (Northern Spiny-Tailed Gecko) Communal Nesting, J. Sean Doody, Huge James, Derek Dunlop, Domenic D'Amore, Matt Edgar, Maik Fidel, David Meadows, Christopher Walmsley, Simon Clulow, Colin Mchenry
J. Sean Doody
No abstract provided.
The Dry Season Shuffle: Gorges Provide Refugia For Animal Communities In Tropical Savannah Ecosystems, J. Sean Doody, Simon Clulow, Geoff Kay, Domenic D'Amore, David Rhind, Steve Wilson, Ryan Ellis, Christina Castellano, Colin Mchenry, Michelle Quayle, Kim Hands, Graeme Sawyer, Michael Bass
The Dry Season Shuffle: Gorges Provide Refugia For Animal Communities In Tropical Savannah Ecosystems, J. Sean Doody, Simon Clulow, Geoff Kay, Domenic D'Amore, David Rhind, Steve Wilson, Ryan Ellis, Christina Castellano, Colin Mchenry, Michelle Quayle, Kim Hands, Graeme Sawyer, Michael Bass
J. Sean Doody
In the wet-dry tropics, animal species face the major challenges of acquiring food, water or shelter during an extended dry season. Although large and conspicuous animals such as ungulates and waterfowl migrate to wetter areas during this time, little is known of how smaller and more cryptic animal species with less mobility meet these challenges. We fenced off the entire entrance of a gorge in the Australian tropical savanna, offering the unique opportunity to determine the composition and seasonal movement patterns of the small vertebrate community. The 1.7 km-long fence was converted to a trapline that was deployed for 18-21 …
The Dry Season Shuffle: Gorges Provide Refugia For Animal Communities In Tropical Savannah Ecosystems, J. Sean Doody, Simon Clulow, Geoff Kay, Domenic D'Amore, David Rhind
The Dry Season Shuffle: Gorges Provide Refugia For Animal Communities In Tropical Savannah Ecosystems, J. Sean Doody, Simon Clulow, Geoff Kay, Domenic D'Amore, David Rhind
J. Sean Doody
In the wet-dry tropics, animal species face the major challenges of acquiring food, water or shelter during an extended dry season. Although large and conspicuous animals such as ungulates and waterfowl migrate to wetter areas during this time, little is known of how smaller and more cryptic animal species with less mobility meet these challenges. We fenced off the entire entrance of a gorge in the Australian tropical savanna, offering the unique opportunity to determine the composition and seasonal movement patterns of the small vertebrate community. The 1.7 km-long fence was converted to a trapline that was deployed for 18-21 …
Novel Habitat Causes A Shift To Diurnal Activity In A Nocturnal Species, J. Sean Doody, Colin R. Mchenry, David Rhind, Simon Clulow
Novel Habitat Causes A Shift To Diurnal Activity In A Nocturnal Species, J. Sean Doody, Colin R. Mchenry, David Rhind, Simon Clulow
J. Sean Doody
Plastic responses may allow individuals to survive and reproduce in novel environments, and can facilitate the establishment of viable populations. But can novel environments reveal plasticity by causing a shift in a behavior as fundamental and conspicuous as daily activity? We studied daily activity times near the invasion front of the cane toad (Rhinella marina), an invasive species that has colonized much of northern Australia. Cane toads in Australia are nocturnal, probably because diurnal activity would subject them to intolerably hot and dry conditions in the tropical savannah during the dry season. Our study can demonstrate, however, that upon reaching …
Conceptual Model For Thermal Limits On The Distribution Of Reptiles, J. Sean Doody, Jennifer A. Moore
Conceptual Model For Thermal Limits On The Distribution Of Reptiles, J. Sean Doody, Jennifer A. Moore
J. Sean Doody
Recent climate change has re-invigorated scientific interest in the dynamics of geographic distributions of organisms. Climate responses and their biogeographical ramifications can be predicted indirectly by studying variation in fitness-related traits across environmental gradients in wide-ranging species. We review evidence for such variation in reptiles. Clinal variation in seasonal timing (onset) of nesting is common but may offer only minor compensation. In contrast, clinal variation in nesting behavior in two wide-ranging species suggests that reptiles can use nest site choice to counter climate differences. We suggest that when range boundaries located at climate extremes are determined by thermal conditions of …
Claw Morphometrics In Monitor Lizards: Variable Substrate And Habitat Use Correlate To Shape Diversity Within A Predator Guild, Domenic C. D'Amore, Simon Clulow, J. Sean Doody, David Rhind, Colin R. Mchenry
Claw Morphometrics In Monitor Lizards: Variable Substrate And Habitat Use Correlate To Shape Diversity Within A Predator Guild, Domenic C. D'Amore, Simon Clulow, J. Sean Doody, David Rhind, Colin R. Mchenry
J. Sean Doody
Numerous studies investigate morphology in the context of habitat, and lizards have received particular attention. Substrate usage is often reflected in the morphology of characters associated with locomotion, and, as a result, claws have become well-studied ecomorphological traits linking the two. The Kimberley predator guild of Western Australia consists of 10 sympatric varanid species. The purpose of this study was to quantify claw size and shape in the guild using geometric morphometrics, and determine whether these features correlated with substrate use and habitat. Each species was assigned a Habitat/substrate group based on the substrate their claws interact with in their …
Employing Natural History Collections In The Aid Of Conservation: Streamlining An Approach To Model Species Distributions En Masse For The Preservation Of Biodiversity, Alice Fornari
Alice Fornari
Using species distribution models (SDMs) in Natural History Collections (NHCs) can influence how humans implement conservation changes in flora and fauna communities and ecosystems. Through the use of legacy data (old NHCs and their associated locality/collection information), data correction (background data or pseudo absences added to presence-only data), and the SDM software, Maxent (and its associated geographic information systems or GIS projected models), it has been shown that it is feasible to create a low budget protocol/setup to project the past, present and future of species population changes. This has been done in the past few decades as more collections …
Support For The Precautionary Principle, Jennifer Mather
Support For The Precautionary Principle, Jennifer Mather
Jennifer Mather, PhD
The precautionary principle gives the animal the benefit of the doubt when its sentient status is not known. This is necessary for advanced invertebrates such as cephalopods because research and evidence concerning the criteria for sentience are scattered and often insufficient to give us the background for the decision.
Cephalopods Are Best Candidates For Invertebrate Consciousness, Jennifer A. Mather, Claudio Carere
Cephalopods Are Best Candidates For Invertebrate Consciousness, Jennifer A. Mather, Claudio Carere
Jennifer Mather, PhD
Insects might have been the first invertebrates to evolve sentience, but cephalopods were the first invertebrates to gain scientific recognition for it.
An Invertebrate Perspective On Pain, Jennifer A. Mather
An Invertebrate Perspective On Pain, Jennifer A. Mather
Jennifer Mather, PhD
Although Key (2016) argues that mammals feel pain and fish do not, from an invertebrate perspective, it is obvious that the pain experience is shared by animals from a number of different animal groups.
Rapid Range Expansion Of The Brazilian Free-Tailed Bat In The Southeastern United States, 2008-2016, Gary F. Mccracken, Riley F. Bernard, Melquisidec Gamba-Rios, Randy Wolfe, Jennifer J. Krauel, Devin N. Jones, Amy L. Russell, Veronica A. Brown
Rapid Range Expansion Of The Brazilian Free-Tailed Bat In The Southeastern United States, 2008-2016, Gary F. Mccracken, Riley F. Bernard, Melquisidec Gamba-Rios, Randy Wolfe, Jennifer J. Krauel, Devin N. Jones, Amy L. Russell, Veronica A. Brown
Amy L. Russell
Revision Of The Mesobuthus Caucasicus Complex From Central Asia, With Descriptions Of Six New Species (Scorpiones: Buthidae), Victor Fet, František Kovařík, Benjamin Gantenbein, Ronald C. Kaiser, Alexander K. Stewart, Matthew R. Graham
Revision Of The Mesobuthus Caucasicus Complex From Central Asia, With Descriptions Of Six New Species (Scorpiones: Buthidae), Victor Fet, František Kovařík, Benjamin Gantenbein, Ronald C. Kaiser, Alexander K. Stewart, Matthew R. Graham
Victor Fet
A widespread Mesobuthus caucasicus complex, which includes some of the most common scorpions found from the Caucasus to China, is revised for the first time based on new extensive collections from Central Asia, using both morphological and DNA marker data. Mesobuthus caucasicus (Nordmann, 1840), s.str. is restricted to the Caucasus Mts. Four taxa are elevated to species rank: M. fuscus (Birula, 1897) (Tajikistan), M. intermedius (Birula, 1897) (Tajikistan), M. kaznakovi (Birula, 1904) (Tajikistan, Uzbekistan), and M. parthorum (Pocock, 1889) (Afghanistan, Iran, Turkmenistan). Six new species are described: M. brutus sp. n. (Iran), M. elenae sp. n. (Tajikistan, Uzbekistan), M. gorelovi …
Catalinia, A New Scorpion Genus From Southern California, Usa And Northern Baja California, Mexico (Scorpiones: Vaejovidae), Michael E. Soleglad, Richard F. Ayrey, Matthew R. Graham, Victor Fet
Catalinia, A New Scorpion Genus From Southern California, Usa And Northern Baja California, Mexico (Scorpiones: Vaejovidae), Michael E. Soleglad, Richard F. Ayrey, Matthew R. Graham, Victor Fet
Victor Fet
Genus Catalinia, gen. nov. (Scorpiones: Vaejovidae) is described from southern California, USA and Baja California, Mexico. The genus is composed of four species formerly placed in Pseudouroctonus: Catalinia minima (Kraepelin, 1911), comb. nov. (type species), C. andreas (Gertsch et Soleglad, 1972), comb. nov., C. castanea (Gertsch et Soleglad, 1972), comb. nov., and C. thompsoni, comb. nov. (Gertsch et Soleglad, 1972). Major diagnostic characters of Catalinia include a carapace with a very weak anterior indentation, a very stout metasoma with little or no tapering from segment I to V, and a mating plug with two partial bases. Evidence is presented suggesting …
The Second Record Of A Relict Akrav Israchanani Levy, 2007 (Scorpiones: Akravidae) From Levana Cave, Israel, Victor Fet, Michael E. Soleglad, Sergei L. Zonstein, Israel Naaman, Shlomi Lubaton, Boaz Langford, Amos Frumkin
The Second Record Of A Relict Akrav Israchanani Levy, 2007 (Scorpiones: Akravidae) From Levana Cave, Israel, Victor Fet, Michael E. Soleglad, Sergei L. Zonstein, Israel Naaman, Shlomi Lubaton, Boaz Langford, Amos Frumkin
Victor Fet
We report the remnants of five new scorpion specimens discovered dead in Levana Cave in Israel in December 2015. We confirm that they belong to the relict scorpion Akrav israchanani Levy, 2007 (Akravidae), famously described from the neighboring Ayyalon Cave, also from dead specimens. The details of morphology of the new specimens are given; they match completely the characters of A. israchanani redescribed by Fet, Soleglad & Zonstein (2011). This second record indicates a wider distribution of this unique cave scorpion, which, however, is extinct in both caves. There is still no evidence that live populations of this species exist.
Genetic Demography At The Leading Edge Of The Distribution Of A Rabies Virus Vector, Antoinette J. Piaggio, Amy L. Russell, Ignacio A. Osorio, Alejandro J. Ramirez, Justin W. Fischer, Jennifer L. Neuwald, Annie E. Tibbels, Luis Lecuona, Gary F. Mccracken
Genetic Demography At The Leading Edge Of The Distribution Of A Rabies Virus Vector, Antoinette J. Piaggio, Amy L. Russell, Ignacio A. Osorio, Alejandro J. Ramirez, Justin W. Fischer, Jennifer L. Neuwald, Annie E. Tibbels, Luis Lecuona, Gary F. Mccracken
Amy L. Russell
African Penguins Follow The Gaze Direction Of Conspecifics, Christian Nawroth, Livio Favaro
African Penguins Follow The Gaze Direction Of Conspecifics, Christian Nawroth, Livio Favaro
Christian Nawroth, Ph.D.
Investigation Of The Impact Of Increased Dietary Insoluble Fiber Through The Feeding Of Distillers Dried Grains With Solubles (Ddgs) On The Incidence And Severity Of Brachyspira-Associated Colitis In Pigs, Bailey Lauren Wilberts, Paulo Elias Arruda, Joann M. Kinyon, Timothy S. Frana, Chong Wang, Drew Robert Magstadt, Darin M. Madson, John F. Patience, Eric Ryan Burrough
Investigation Of The Impact Of Increased Dietary Insoluble Fiber Through The Feeding Of Distillers Dried Grains With Solubles (Ddgs) On The Incidence And Severity Of Brachyspira-Associated Colitis In Pigs, Bailey Lauren Wilberts, Paulo Elias Arruda, Joann M. Kinyon, Timothy S. Frana, Chong Wang, Drew Robert Magstadt, Darin M. Madson, John F. Patience, Eric Ryan Burrough
Bailey (Wilberts) Arruda
Diet has been implicated as a major factor impacting clinical disease expression of swine dysentery and Brachyspira hyodysenteriae colonization. However, the impact of diet on novel pathogenic strongly beta-hemolytic Brachyspira spp. including “B. hampsonii” has yet to be investigated. In recent years, distillers dried grains with solubles (DDGS), a source of insoluble dietary fiber, has been increasingly included in diets of swine. A randomized complete block experiment was used to examine the effect of increased dietary fiber through the feeding of DDGS on the incidence of Brachyspira-associated colitis in pigs. One hundred 4-week-old pigs were divided …
Why Animal Welfarism Continues To Fail, Lori Marino
Why Animal Welfarism Continues To Fail, Lori Marino
Lori Marino, PhD
Welfarism prioritizes human interests over the needs of nonhuman animals. Despite decades of welfare efforts other animals are mostly worse off than ever before, being subjected to increasingly invasive and harmful treatments, especially in the factory farming and biomedical research areas. A legal rights-based approach is essential in order for other animals to be protected from the varying ethical whims of our species.
Thinking Pigs: Cognition, Emotion, And Personality, Lori Marino, Christina M. Colvin
Thinking Pigs: Cognition, Emotion, And Personality, Lori Marino, Christina M. Colvin
Lori Marino, PhD
An exploration of the cognitive complexity of Sus domesticus, the domestic pig.
Experimental Exposure To Urban And Pink Noise Affects Brain Development And Song Learning In Zebra Finches (Taenopygia Guttata), Dominique A. Potvin, Michael T. Curcio, John P. Swaddle, Scott A. Macdougall-Shackleton
Experimental Exposure To Urban And Pink Noise Affects Brain Development And Song Learning In Zebra Finches (Taenopygia Guttata), Dominique A. Potvin, Michael T. Curcio, John P. Swaddle, Scott A. Macdougall-Shackleton
John Swaddle
Recently, numerous studies have observed changes in bird vocalizations—especially song—in urban habitats. These changes are often interpreted as adaptive, since they increase the active space of the signal in its environment. However, the proximate mechanisms driving cross-generational changes in song are still unknown. We performed a captive experiment to identify whether noise experienced during development affects song learning and the development of song-control brain regions. Zebra finches (Taeniopygia guttata) were bred while exposed, or not exposed, to recorded traffic urban noise (Study 1) or pink noise (Study 2). We recorded the songs of male offspring and compared these to fathers’ …
Two New Euscorpius Species From Central-Western Greece (Scorpiones: Euscorpiidae), Gioele Tropea, Victor Fet
Two New Euscorpius Species From Central-Western Greece (Scorpiones: Euscorpiidae), Gioele Tropea, Victor Fet
Victor Fet
Two new Euscorpius species are described, based on specimens collected by P.M. Giachino & D. Vailati in central-western Greece in neighboring Aitoloakarnania (Western Greece) and Fokida (Central Greece) regional units. No Euscorpius specimens were previously available from this area. The first new species, Euscorpius giachinoi sp. n., is very similar to a recently described E. birulai Fet et al., 2014 from Euboea Island, and is also characterized by a low trichobothrial count (Pv = 7, et = 5), a low pectinal teeth count (Dp = 7 in males, 6 in females), and long-limbed features. The second species, E. vailatii sp. …
Three New Species Of Euscorpius (Scorpiones: Euscorpiidae) From Greece, Gioele Tropea, Victor Fet, Aristeidis Parmakelis, Panayiota Kotsakiozi, Iasmi Stathi
Three New Species Of Euscorpius (Scorpiones: Euscorpiidae) From Greece, Gioele Tropea, Victor Fet, Aristeidis Parmakelis, Panayiota Kotsakiozi, Iasmi Stathi
Victor Fet
Three new species of the genus Euscorpius Thorell, 1876 are described from Greece: E. stahlavskyi sp.n. from Epirus in the northwestern Greece; E. kinzelbachi sp.n. from Mt. Olympus at the eastern border between Thessaly and Central Macedonia, and E. vignai sp.n. from Karpathos and Kasos Islands (eastern Aegean Sea). Species-level divergence of these taxa is also confirmed by multiple DNA markers in Parmakelis et al. (2013).
The Systematic Position Of The Scorpion Genera Heteroscorpion Birula, 1903 And Urodacus Peters, 1861 (Scorpiones: Scorpionoidea), Michael E. Soleglad, Victor Fet, František Kovařík
The Systematic Position Of The Scorpion Genera Heteroscorpion Birula, 1903 And Urodacus Peters, 1861 (Scorpiones: Scorpionoidea), Michael E. Soleglad, Victor Fet, František Kovařík
Victor Fet
Stockwell (1989), in an unpublished revision, suggested the elevation of subfamily Urodacinae to the family rank, and considered Heteroscorpioninae a subfamily of Ischnuridae. Heteroscorpioninae was formally elevated to the family rank by Lourenço (1996a), and Urodacinae, by Prendini (2000). As a result of a detailed cladistic analysis, Prendini (2000, 2003b) considered families Heteroscorpionidae and Urodacidae to be sister groups, although an al-ternative topology was available. Soleglad & Fet (2003b) questioned the results of Prendini (2000) but nevertheless retained the monophyly of Heteroscorpion and Urodacus pending more detailed analysis; they recognized two valid monotypic subfamilies, Heteroscorpioninae and Urodacinae, under Urodacidae. Our …
Vestigial Serrula In Scorpion Genera Paravaejovis, , Smeringurus And Vejovoidus (Scorpiones: Vaejovidae), Victor Fet, Michael E. Soleglad, Michael S. Brewer, David P. A. Neff, Michael L. Norton
Vestigial Serrula In Scorpion Genera Paravaejovis, , Smeringurus And Vejovoidus (Scorpiones: Vaejovidae), Victor Fet, Michael E. Soleglad, Michael S. Brewer, David P. A. Neff, Michael L. Norton
Victor Fet
The presence of vestigial serrula on the ventral edge of the cheliceral movable finger is established for vaejovid genera Paravaejovis, Paruroctonus, Smeringurus, and Vejovoidus. Detailed descriptions and SEM images illustrating the various manifestations of this interesting cheliceral structure are provided for many species of these four genera. A brief systematic overview of this structure as it exists in Recent scorpions is also presented.
Three More Species Of Euscorpius Confirmed For Greece (Scorpiones: Euscorpiidae), Victor Fet, Michael E. Soleglad, Aristeidis Parmakelis, Panayiota Kotsakiozi, Iasmi Stathi
Three More Species Of Euscorpius Confirmed For Greece (Scorpiones: Euscorpiidae), Victor Fet, Michael E. Soleglad, Aristeidis Parmakelis, Panayiota Kotsakiozi, Iasmi Stathi
Victor Fet
In Greece, scorpion genus Euscorpius has been insufficiently studied. Taxonomy of several species and subspecies has been inconsistent and confusing. We provide new morphological data and redescriptions of type specimens of three “old” taxa, described from Greece and formerly listed under a “catch-all” taxon Euscorpius carpathicus. We elevate to, or confirm at species status: Euscorpius scaber Birula, 1900 (type locality: Mt. Athos), E. candiota Birula, 1903 (type locality: Heraklion, Crete), and E. ossae Di Caporiacco, 1950, stat.n. (type locality: Mt. Ossa, Thessaly). Species-level separation of these taxa is also confirmed by multiple species delimitation methods implemented on the phylogenetic data …
The First Record Of Upper Permian And Lower Triassic Scorpions From Russia (Chelicerata: Scorpiones), Victor Fet, Dmitry E. Shcherbakov, Michael E. Soleglad
The First Record Of Upper Permian And Lower Triassic Scorpions From Russia (Chelicerata: Scorpiones), Victor Fet, Dmitry E. Shcherbakov, Michael E. Soleglad
Victor Fet
Several small fragments of fossil scorpions are reported from two localities in Vologda Province, Russia, representing the Upper Permian (Severodvinian, correlated to Wuchiapingian) (Isady) and Lower Triassic just above the Permian-Triassic boundary (Induan) (Nedubrovo). Most observed structures are not diagnostic at genus or family level. The Isady leg fragment possesses ungues (claws), which are both denticulated and setaceous, and resembles a Carboniferous Eobuthus sp. (Eobuthidae). It is the latest record of this type of ungues, which are known in some Paleozoic scorpions (extinct suborder Mesoscorpiones); all extant scorpions have smooth claws without denticulation or setation.
The Genus Akrav Levy, 2007 (Scorpiones: Akravidae) Revisited, Victor Fet, Michael E. Soleglad, Sergei L. Zonstein
The Genus Akrav Levy, 2007 (Scorpiones: Akravidae) Revisited, Victor Fet, Michael E. Soleglad, Sergei L. Zonstein
Victor Fet
Akrav israchanani, a relict chactoid scorpion from the famous Ayyalon Cave in Israel, is analyzed for the first time since its original description by Gershom Levy (2007). All scorpions found in this cave (20 specimens) were dead, represented by exoskeletons; they are mostly fragmented during collection, many incomplete, but extremely well preserved, and have no evidence of fossilization. Time and cause of death are unknown. Diagnostic characters described by Levy are largely confirmed, and some are further clarified. An exhaustive set of microscopic images is published, encompassing data from all best preserved specimens. Previously unpublished morphological details are illustrated such …