Henry W. Robison
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View article: A New Species of Myxobolus (Cnidaria: Myxosporea: Myxobolidae) from the Mesenteries of Blackspotted Topminnow, Fundulus olivaceus (Cyprinodontiformes: Fundulidae), from the Upper Ouachita River Drainage, Arkansas, USA
A New Species of Myxobolus (Cnidaria: Myxosporea: Myxobolidae) from the Mesenteries of Blackspotted Topminnow, Fundulus olivaceus (Cyprinodontiformes: Fundulidae), from the Upper Ouachita River Drainage, Arkansas, USA Open
Between March and August 2024, three species of Fundulus topminnows, including two northern studfish, Fundulus catenatus, six blackspotted topminnows, Fundulus olivaceus, and eleven blackstriped topminnows, Fundulus notatus, were collected…
View article: New Record of Leucistic Blue Catfish, Ictalurus furcatus (Siluriformes: Ictaluridae) from the Black River, Lawrence County, Arkansas
New Record of Leucistic Blue Catfish, Ictalurus furcatus (Siluriformes: Ictaluridae) from the Black River, Lawrence County, Arkansas Open
The Blue Catfish, Ictalurus furcatus (Lesueur), the largest North American ictalurid, inhabits deep watersheds, impoundments, and main channels and backwaters of medium to large rivers, over mud, sand, and gravelly substrate. Its native ra…
View article: Fish Leeches of Arkansas
Fish Leeches of Arkansas Open
Recent collection within Arkansas greatly enlarges the knowledge concerning hosts and distributions of fish leeches within the state. The natural history of the 6 species of fish leeches known from Arkansas (Placobdella montifera, Placobde…
View article: An Annotated Checklist of the Camel Crickets (Insecta: Orthoptera: Rhaphidophoridae) of Arkansas
An Annotated Checklist of the Camel Crickets (Insecta: Orthoptera: Rhaphidophoridae) of Arkansas Open
A total of 14 native species of camel crickets and one introduced taxon representing three genera (Ceuthophilus, Phrixocnemis, and Diestrammena) of the orthopteran family Rhaphidophoridae, are herein reported from Arkansas. The most divers…
View article: Novel Reproductive Data on Blue Sucker, Cycleptus elongatus (Cypriniformes: Catostomidae), from Northeastern Arkansas
Novel Reproductive Data on Blue Sucker, Cycleptus elongatus (Cypriniformes: Catostomidae), from Northeastern Arkansas Open
Nothing has been published in the scientific literature concerning the reproductive biology of the Blue Sucker, Cycleptus elongatus in Arkansas. We examined seven female C. elongatus collected in late February 2021 and 2022 and again in ea…
View article: New Geographic Distributional Records for Two Lampreys (Petromyzontiformes: Petromyzontidae) in Arkansas, with Notes on Histopathology
New Geographic Distributional Records for Two Lampreys (Petromyzontiformes: Petromyzontidae) in Arkansas, with Notes on Histopathology Open
The recent update (2nd edition) of the Fishes of Arkansas includes what is known, to date, on the geographic distribution of five species of lampreys that occur in the state. Here, we provide new distributional records on two of those spec…
View article: Helminth Parasites of Northern Cottonmouth, Agkistrodon piscivorus (Ophidia: Viperidae), from Arkansas
Helminth Parasites of Northern Cottonmouth, Agkistrodon piscivorus (Ophidia: Viperidae), from Arkansas Open
The Northern cottonmouth, Agkistrodon piscivorus is a large, semiaquatic viperid snake found statewide in Arkansas. Although a great deal has been published on helminth parasites of A. piscivorus from other parts of its range, little (outs…
View article: Noteworthy Parasites (Trematoda, Cestoda, Phthiraptera) of Three Birds (Aves: Passeriformes; Pelecaniformes; Piciformes) from Arkansas
Noteworthy Parasites (Trematoda, Cestoda, Phthiraptera) of Three Birds (Aves: Passeriformes; Pelecaniformes; Piciformes) from Arkansas Open
Between November 2020 and March 2021, three species of birds, one each of a tufted titmouse (Baeolophus bicolor), pileated woodpecker (Dryocopus pileatus), and great blue heron (Ardea herodias) were salvaged from Lawrence and Polk counties…
View article: Hemoparasites (Apicomplexa: Hepatozoon; Kinetoplastida: Trypanosoma) of Two Anurans (Hylidae; Ranidae), from Polk County, Arkansas
Hemoparasites (Apicomplexa: Hepatozoon; Kinetoplastida: Trypanosoma) of Two Anurans (Hylidae; Ranidae), from Polk County, Arkansas Open
Arkansas supports 26 species/subspecies of anurans and only one (4%), the green frog, Rana clamitans, has been previously reported with hemoparasites. Here, we collected blood samples from three species of anurans, five American green tree…
View article: New Records of Distribution and Natural History of Vertebrates in Arkansas: 2020-2023
New Records of Distribution and Natural History of Vertebrates in Arkansas: 2020-2023 Open
Small details of natural history often go undocumented to science if those details are not parts of larger studies. However, knowledge of small details can provide insights that lead to interesting questions about ecological relationships …
View article: New Host Records of Apicomplexan Blood Parasites (Haemogregarinidae and Hepatozoidae) Infecting Two Reptiles (Testudines; Ophidia) from Arkansas
New Host Records of Apicomplexan Blood Parasites (Haemogregarinidae and Hepatozoidae) Infecting Two Reptiles (Testudines; Ophidia) from Arkansas Open
Relatively few records of apicomplexan blood parasites from reptiles in Arkansas have been published although the effects of these parasites on reptilian health may be of concern. Using photomicrographs we describe the morphotypes of paras…
View article: A New Species of Myxobolus (Cnidaria: Myxosporea: Myxobolidae) from the Blue Sucker, Cycleptus elongatus (Lesueur) (Cypriniformes: Catostomidae: Cycleptinae), from Arkansas
A New Species of Myxobolus (Cnidaria: Myxosporea: Myxobolidae) from the Blue Sucker, Cycleptus elongatus (Lesueur) (Cypriniformes: Catostomidae: Cycleptinae), from Arkansas Open
During 9-10 February 2018 and 21-22 February 2020, 7 adult Blue Suckers, Cycleptus elongatus, were collected by hoop nets from the Red River, Little River County (n = 3), and the Black River, Lawrence County (n = 4), Arkansas, and their gi…
View article: Novel Reproductive Data on Pealip Redhorse, Moxostoma pisolabrum (Cypriniformes: Catostomidae), from Northeastern Arkansas
Novel Reproductive Data on Pealip Redhorse, Moxostoma pisolabrum (Cypriniformes: Catostomidae), from Northeastern Arkansas Open
Little is known about the natural history of the Pealip Redhorse (Moxostoma pisolabrum), particularly on its reproductive biology in Arkansas. We examined 11 female M. pisolabrum collected in late February 2020 and 2021 from the Black Rive…
View article: Eimeria lancasterensis (Apicomplexa: Eimeriidae), Three Nematodes (Heligmosomoidea: Boehmiellidae, Heligmonellidae), and a Flea (Siphonaptera: Ceratophyllidae) from the Eastern Fox Squirrel, Sciurus niger (Rodentia: Sciuridae) in Arkansas
Eimeria lancasterensis (Apicomplexa: Eimeriidae), Three Nematodes (Heligmosomoidea: Boehmiellidae, Heligmonellidae), and a Flea (Siphonaptera: Ceratophyllidae) from the Eastern Fox Squirrel, Sciurus niger (Rodentia: Sciuridae) in Arkansas Open
In Arkansas, the eastern fox squirrel (Sciurus niger) is a common inhabitant of the state. Although information is available on ectoparasites of this host in Arkansas, little is known about the endoparasites of this squirrel. A single spec…
View article: Selected Helminth Parasites (Cestoda, Nematoda) of Bobcat, Lynx rufus (Carnivora: Felidae), in Northeastern Arkansas
Selected Helminth Parasites (Cestoda, Nematoda) of Bobcat, Lynx rufus (Carnivora: Felidae), in Northeastern Arkansas Open
The bobcat, Lynx rufus is a relatively common Arkansas carnivore that ranges statewide. Although there is a great deal of information on the natural history of this species in the state, there have been few studies where parasites have bee…
View article: An Updated Checklist of the Spiders (Arachnida: Araneae) of Arkansas
An Updated Checklist of the Spiders (Arachnida: Araneae) of Arkansas Open
A total of 510 species of spiders representing 43 families and 215 genera are herein reported from Arkansas. The most diverse families of state spiders were Salticidae (64 species), Lycosidae (59 species), Araneidae (55 species), and Gnaph…
View article: Revision of monogeneans parasitising Lythrurus (Cypriniformes: Leuciscidae) in eastern U.S.A., with description of Dactylogyrus lythruri sp. n. and new records of Dactylogyrus crucis Rogers, 1967 (Monogenoidea: Dactylogyridae)
Revision of monogeneans parasitising Lythrurus (Cypriniformes: Leuciscidae) in eastern U.S.A., with description of Dactylogyrus lythruri sp. n. and new records of Dactylogyrus crucis Rogers, 1967 (Monogenoidea: Dactylogyridae) Open
A revisionary study revealed two species of monogeneans, Dactylogyrus crucis Rogers, 1967 and Dactylogyrus lythruri sp. n., parasitising Lythrurus Jordan (formerly a subgenus of Notropis Rafinesque, 1818). New records and updated taxonomy …
View article: Dactylogyrus pisolabrae n. sp. (Monogenoidea: Dactylogyridae) Parasitizing the Pealip Redhorse, Moxostoma pisolabrum (Teleostei: Catostomidae), from Oklahoma, U.S.A.
Dactylogyrus pisolabrae n. sp. (Monogenoidea: Dactylogyridae) Parasitizing the Pealip Redhorse, Moxostoma pisolabrum (Teleostei: Catostomidae), from Oklahoma, U.S.A. Open
A new species of monogenean, Dactylogyrus pisolabrae n. sp., was found parasitizing the gills of the Pealip Redhorse, Moxostoma pisolabrum, from Oklahoma. Dactylogyrus pisolabrae is morphologically similar to Dactylogyrus apos, Dactylogyru…
View article: Clinostomum marginatum (Digenea: Clinostomidae) from Fishes of Crooked Creek, Boone and Marion Counties, Arkansas
Clinostomum marginatum (Digenea: Clinostomidae) from Fishes of Crooked Creek, Boone and Marion Counties, Arkansas Open
Crooked Creek is a renowned trophy (blue ribbon) Smallmouth Bass (Micropterus dolomieu) fishing stream. This fish, however, has been previously reported to commonly harbor some of the highest population densities of the digenean trematode …
View article: Ecto- and Endoparasites of the Texas Deermouse, Peromyscus attwateri and Eastern Woodrat, Neotoma floridana (Rodentia: Cricetidae) from Polk County, Arkansas
Ecto- and Endoparasites of the Texas Deermouse, Peromyscus attwateri and Eastern Woodrat, Neotoma floridana (Rodentia: Cricetidae) from Polk County, Arkansas Open
In Arkansas, the Texas deermouse (Peromyscus attwateri) occurs in the western part of the state where it is restricted to the uplands of the Interior Highlands. The eastern woodrat (Neotoma floridana) is found statewide but is less common …
View article: Additional Records of Hemoparasites (Apicomplexa) and Helminth Parasites (Trematoda, Cestoda, Nematoda, Acanthocephala) from Oklahoma Amphibians (Anura) and Reptiles (Testudines: Ophidia)
Additional Records of Hemoparasites (Apicomplexa) and Helminth Parasites (Trematoda, Cestoda, Nematoda, Acanthocephala) from Oklahoma Amphibians (Anura) and Reptiles (Testudines: Ophidia) Open
Over the last few years, we have learned more about hematozoan (blood) parasites and helminth parasites of Oklahoma herpetofauna than we have gained in many years past. To that end, we continue to provide information on various intraerythr…
View article: Helminth Parasites of the Golden Topminnow, Fundulus chrysotus (Cyprinidontiformes: Fundulidae) from Desha County, Arkansas
Helminth Parasites of the Golden Topminnow, Fundulus chrysotus (Cyprinidontiformes: Fundulidae) from Desha County, Arkansas Open
During July 2019, 21 Golden Topminnows (Fundulus chrysotus) were collected from an oxbow lake in McGehee, Desha County, Arkansas, and examined for parasites. Found were 4 taxa of endoparasites, including 3 digeneans (Clinostomum marginatum…
View article: Hemoparasites (Apicomplexa: Hepatozoon; Kinetoplastida: Trypanosoma) of Green Frogs, Rana clamitans (Anura: Ranidae) from Arkansas
Hemoparasites (Apicomplexa: Hepatozoon; Kinetoplastida: Trypanosoma) of Green Frogs, Rana clamitans (Anura: Ranidae) from Arkansas Open
The green frog, Rana clamitans, has been reported as a host of several hemoparasites, including trypanosomes and Hepatozoon spp. In Arkansas, however, there are no reports of any hemoparasites in R. clamitans nor from any other anuran from…
View article: Vertebrate Natural History Notes from Arkansas, 2020
Vertebrate Natural History Notes from Arkansas, 2020 Open
Smaller details of natural history often go undocumented to science if those details are not parts of larger studies, but small details can provide insights that lead to interesting questions about ecological relationships or environmental…
View article: Helminth Parasites of Eastern Screech Owl, Megascops asio (Aves: Strigiformes: Strigidae) from Arkansas
Helminth Parasites of Eastern Screech Owl, Megascops asio (Aves: Strigiformes: Strigidae) from Arkansas Open
The eastern screech owl (Megascops asio) is a small owl that is relatively common in eastern North America. Nothing is known of the parasites of this owl in Arkansas. Here, we document 3 helminths from a single injured M. asio that subsequ…
View article: Parasites (Cestoda, Nematoda, Mollusca) of Western Starhead Topminnow, Fundulus blairae (Cypriniformes: Fundulidae), from the Red River Drainage, Southwestern Arkansas
Parasites (Cestoda, Nematoda, Mollusca) of Western Starhead Topminnow, Fundulus blairae (Cypriniformes: Fundulidae), from the Red River Drainage, Southwestern Arkansas Open
Between July 2016 and October 2017, and again during May and September 2018, 64 Western Starhead Topminnows, Fundulus blairae, were collected from a single site in the Red River drainage of southwestern Arkansas and examined for gill/fin e…
View article: Parasites (Cnidaria, Trematoda, Cestoda, Nematoda, Crustacea) of Select Fishes (Lepisosteidae, Catostomidae, Hiodontidae, Cyprinidae, Ictaluridae) of Lake Texoma, Oklahoma
Parasites (Cnidaria, Trematoda, Cestoda, Nematoda, Crustacea) of Select Fishes (Lepisosteidae, Catostomidae, Hiodontidae, Cyprinidae, Ictaluridae) of Lake Texoma, Oklahoma Open
Twenty-seven fishes, including a Longnose Gar (Lepisosteus osseus), a Shortnose Gar (L. platostomus), three Goldeye (Hiodon alosoides), eight Highfin Carpsucker (Carpiodes velifer), a Bigmouth Buffalo (Ictiobus cyprinellus), four Smallmout…
View article: Additional Information on the Natural History and Ecology of Select Fauna (Decapoda; Actinopterygii; Mammalia) from Oklahoma
Additional Information on the Natural History and Ecology of Select Fauna (Decapoda; Actinopterygii; Mammalia) from Oklahoma Open
In our third contribution on the subject, we include noteworthy observations on the natural history and ecology of three species of crayfishes, eight native fishes, and two mammals in Oklahoma. Here, additional records of three uncommon sp…
View article: Species of Ligictaluridus (Monogenoidea: Dactylogyridae) Parasitizing Large Catfishes (Siluriformes: Ictaluridae) from Arkansas, Oklahoma, and Texas
Species of Ligictaluridus (Monogenoidea: Dactylogyridae) Parasitizing Large Catfishes (Siluriformes: Ictaluridae) from Arkansas, Oklahoma, and Texas Open
Three species of Ligictaluridus (Monogenoidea: Dactylogyridae) were found on large ictalurid catfishes in Arkansas, Oklahoma, and Texas. We provide the second report of Ligictaluridus michaelalicea from the gills of the Flathead Catfish (P…
View article: Distribution, Habitat, and Life History Aspects of the Dwarf Crayfishes of the Genus Cambarellus (Decapoda: Cambaridae) in Arkansas
Distribution, Habitat, and Life History Aspects of the Dwarf Crayfishes of the Genus Cambarellus (Decapoda: Cambaridae) in Arkansas Open
The dwarf crayfishes of the genus Cambarellus are represented in Arkansas by only 2 species: Cambarellus (Pandicambarus) puer (Hobbs) and C. (P.) shufeldtii (Faxon). Both species are quite small and uncommonly encountered in the state. Bet…