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Articles 5131 - 5160 of 11462

Full-Text Articles in Entomology

Woody Ornamentals For Bee-Friendly Landscapes (Ohio Valley Region), Bernadette Maria Mach, Daniel A. Potter Jan 2017

Woody Ornamentals For Bee-Friendly Landscapes (Ohio Valley Region), Bernadette Maria Mach, Daniel A. Potter

Entomology Reports

No abstract provided.


Attack And Defense Movements Involved In The Interaction Of Spodoptera Frugiperda And Helicoverpa Zea (Lepidoptera: Noctuidae), José P. F. Bentivenha, Edson L. L. Baldin, Débora Goulart Montezano, Thomas E. Hunt, Silvana L. Vieira De Paula Moraes Jan 2017

Attack And Defense Movements Involved In The Interaction Of Spodoptera Frugiperda And Helicoverpa Zea (Lepidoptera: Noctuidae), José P. F. Bentivenha, Edson L. L. Baldin, Débora Goulart Montezano, Thomas E. Hunt, Silvana L. Vieira De Paula Moraes

Department of Entomology: Faculty Publications

The fall armyworm, Spodoptera frugiperda (J. E. Smith) and the corn earworm, Helicoverpa zea (Boddie) are among the main pests of maize. Both species exhibit cannibalistic behavior and quite often share the same feeding guild in maize (maize ears), which can result in several interspecific and intraspecific interactions. Paired interaction scenarios of intraspecific and interspecific larvae were assessed in arenas in the presence and absence of food to characterize movements resulting from interactions of these insects. There was a difference in the frequency of behavioral movements in all the interactions, except for S. frugiperda in the presence of food. …


Amitraz And Its Metabolite Modulate Honey Bee Cardiac Function And Tolerance To Viral Infection, Scott T. O'Neal, Carlyle C. Brewster, Jeffrey R. Bloomquist, Troy D. Anderson Jan 2017

Amitraz And Its Metabolite Modulate Honey Bee Cardiac Function And Tolerance To Viral Infection, Scott T. O'Neal, Carlyle C. Brewster, Jeffrey R. Bloomquist, Troy D. Anderson

Department of Entomology: Faculty Publications

The health and survival of managed honey bee (Apis mellifera) colonies are affected by multiple factors, one of the most important being the interaction between viral pathogens and infestations of the ectoparasitic mite Varroa destructor. Currently, the only effective strategy available for mitigating the impact of viral infections is the chemical control of mite populations. Unfortunately, the use of in-hive acaricides comes at a price, as they can produce sublethal effects that are difficult to quantify, but may ultimately be as damaging as the mites they are used to treat. The goal of this study was to …


The Fourteenth Amithao Thomson, 1878 (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini): A Remarkable New Species From Ecuador, Brett C. Ratcliffe Jan 2017

The Fourteenth Amithao Thomson, 1878 (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini): A Remarkable New Species From Ecuador, Brett C. Ratcliffe

Department of Entomology: Faculty Publications

Anew species in the Neotropical genus Amithao Thomson, 1878 is described from Ecuador, with supporting illustrations and a diagnosis. A revised key to the 14 species in the genus is provided along with an annotated checklist.


Effects Of Neonicotinoid Imidacloprid Exposure On Bumble Bee (Hymenoptera: Apidae) Queen Survival And Nest Initiation, Judy Wu-Smart, Marla Spivak Jan 2017

Effects Of Neonicotinoid Imidacloprid Exposure On Bumble Bee (Hymenoptera: Apidae) Queen Survival And Nest Initiation, Judy Wu-Smart, Marla Spivak

Department of Entomology: Faculty Publications

Neonicotinoids are highly toxic to insects and may systemically translocate to nectar and pollen of plants where foraging bees may become exposed. Exposure to neonicotinoids can induce detrimental sublethal effects on individual and colonies of bees and may have long-term impacts, such as impaired foraging, reduced longevity, and reduced brood care or production. Less well-studied are the potential effects on queen bumble bees that may become exposed while foraging in the spring during colony initiation. This study assessed queen survival and nest founding in caged bumble bees [Bombus impatiens (Cresson) (Hymenoptera: Apidae)] after chronic (18-d) dietary exposure of imidacloprid …


Cave Millipedes Of The United States. Xiv. Revalidation Of The Genus Speorthus Chamberlin, 1952 (Diplopoda, Polydesmida, Macrosternodesmidae), With A Description Of A New Species From Texas And Remarks On The Families Polydesmidae And Macrosternodesmidae In North America, William A. Shear, James M. Reddell Jan 2017

Cave Millipedes Of The United States. Xiv. Revalidation Of The Genus Speorthus Chamberlin, 1952 (Diplopoda, Polydesmida, Macrosternodesmidae), With A Description Of A New Species From Texas And Remarks On The Families Polydesmidae And Macrosternodesmidae In North America, William A. Shear, James M. Reddell

Insecta Mundi

The genus Speorthus Chamberlin is revalidated for S. tuganbius Chamberlin and S. reyesi, new species (Diplopoda, Polydesmida, Macrosternodesmidae). The families Polydesmidae and Macrosternodesmidae (as they occur in North America) are briefly discussed, and their component North American genera listed. The validity of Macrosternodesmidae is reaffirmed; the family is predominantly North American. Nearctodesminae, new status, is formally designated as a subfamily of Macrosternodesmidae. The superfamily Trichopolydesmoidea is synonymized with the superfamily Polydesmoidea, new combination.


Una Nueva Especie De Eraina Clarke (Lepidoptera: Autostichidae) De Chile Central, Francisco Urra Jan 2017

Una Nueva Especie De Eraina Clarke (Lepidoptera: Autostichidae) De Chile Central, Francisco Urra

Insecta Mundi

Se describe una nueva especie de Autostichidae, Eraina beechei nov. sp., a partir de ejemplares recolectados en la precordillera andina de la Provincia de Ñuble, Región del Biobío. Se presentan caracteres de diagnóstico para la especie; se entregan fotografías del adulto, ilustraciones de las estructuras genitales del macho y de la hembra, y una clave para la determinación de las especies del género Eraina.


Morphological Revision Of The Western Palaearctic Species Of The Genus Copris Geoffroy, 1762 With Three Foretibial External Teeth (Coleoptera: Scarabaeoidea: Scarabaeidae), Stefano Ziani Jan 2017

Morphological Revision Of The Western Palaearctic Species Of The Genus Copris Geoffroy, 1762 With Three Foretibial External Teeth (Coleoptera: Scarabaeoidea: Scarabaeidae), Stefano Ziani

Insecta Mundi

This revision concerns a small group of Western Palaearctic Copris species (Coleoptera: Scarabaeoidea: Scarabaeidae) distinguished by having three lateral teeth on the foretibae. According to the literature, this group consists of four taxa: Copris armeniacus Faldermann, 1835, C. felschei Reitter, 1892, C. pueli Mollandin de Boissy, 1905 and C. umbilicatus Abeille de Perrin, 1901. Copris armeniacus is herein deemed a species inquirenda, and C. felschei, for which a neotype is designated, is deemed valid. Copris umbilicatus is recorded for the first time from Turkey. A key to all species of the genus Copris known from the Western Palaearctic …


Key To The Korean Species Of Armored Scale Insects (Hemiptera: Diaspididae), Soo-Jung Suh Jan 2017

Key To The Korean Species Of Armored Scale Insects (Hemiptera: Diaspididae), Soo-Jung Suh

Insecta Mundi

A list of all 80 species of armored scale insects (Hemiptera: Diaspididae) in 30 genera that have been identified or documented in Korea, along with a dichotomous key to separate them, is provided.


Species Groups Of Traumatomutilla André (Hymenoptera: Mutillidae), Kevin A. Williams, Pedro R. Bartholomay, Márcio Luiz De Oliveira Jan 2017

Species Groups Of Traumatomutilla André (Hymenoptera: Mutillidae), Kevin A. Williams, Pedro R. Bartholomay, Márcio Luiz De Oliveira

Insecta Mundi

Females of Traumatomutilla André (Hymenoptera: Mutillidae) are organized into 14 species groups; 136 of the 138 Traumatomutilla taxa known from females were studied. Of these species groups, only the inermis species group was adequately established and diagnosed in the literature (Casal 1969). The remaining newly established species groups are as follows: americana, auriculata, bellica, bifurca, diabolica, gemella, indica, integella, juvenilis, quadrinotata, tabapua, trochanterata, and vitelligera. Diagnoses and lists of included species are provided for each species group. Eighty-three new country records are provided for 49 species.


Annotated World Bibliography Of Host Plants Of The Melon Fly, Bactrocera Cucurbitae (Coquillett) (Diptera: Tephritidae), Grant T. Mcquate, Nicanor J. Liquido, Kelly A. A. Nakamichi Jan 2017

Annotated World Bibliography Of Host Plants Of The Melon Fly, Bactrocera Cucurbitae (Coquillett) (Diptera: Tephritidae), Grant T. Mcquate, Nicanor J. Liquido, Kelly A. A. Nakamichi

Insecta Mundi

The melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae), is a widespread, economically important tephritid fruit fly species. Bactrocera cucurbitae infests fruits and vegetables of a number of different plant species, with many host plants in the plant family Cucurbitaceae, but with additional hosts scattered across many other plant families. Although thought to be native to India, its distribution has spread throughout many countries in Oriental Asia, into a number of Pacific Island nations, and into Africa. The documented introductions into countries outside its native distribution show that this species could establish in other countries where it does not presently occur, …


The Plecoptera Of Panama. I. The Stonefly Fauna Of Mount Totumas Cloud Forest And Biological Reserve, Including A New Country Record, Brian J. Armitage, Bill P. Stark Jan 2017

The Plecoptera Of Panama. I. The Stonefly Fauna Of Mount Totumas Cloud Forest And Biological Reserve, Including A New Country Record, Brian J. Armitage, Bill P. Stark

Insecta Mundi

The Republic of Panama currently has 21 recorded species of stoneflies, all in the genus Anacroneuria (Plecoptera: Perlidae). Herein, we record five species of this genus from the Mount Totumas Cloud Forest and Biological Reserve, in the upper reaches of the Río Chiriquí Viejo watershed. One of these species, A. plutonis (Banks), represents a new country record for Panama. These results are part of an ongoing effort to characterize the aquatic insect fauna of Panama, and to evaluate that country’s major watersheds.


Myrmeconycha New Genus: The Fi Rst Myrmecophilous Fl Ea Beetle (Coleoptera: Chrysomelidae: Galerucinae: Alticini), A. S. Konstantinov, A. K. Tishechkin Jan 2017

Myrmeconycha New Genus: The Fi Rst Myrmecophilous Fl Ea Beetle (Coleoptera: Chrysomelidae: Galerucinae: Alticini), A. S. Konstantinov, A. K. Tishechkin

Insecta Mundi

The first myrmecophilous flea beetle genus (Myrmeconycha Konstantinov and Tishechkin, new genus) with four new species (M. erwini Konstantinov and Tishechkin, new species – Ecuador, M. gordoni Konstantinov and Tishechkin, new species – Brazil, M. pakaluki Konstantinov and Tishechkin, new species – Panama, and M. pheidole Konstantinov and Tishechkin, new species – Costa Rica) is described and illustrated. It is compared with flea beetles of the subtribe Disonychina (Coleoptera: Chrysomelidae: Galerucinae: Alticini) and may be easily differentiated based on the external and internal features, which include the waxy surface of the head and pronotum, reticulated surface of …


A New Species Of Madoniella Pic (Coleoptera: Cleridae) From Chiapas, Mexico, Jacques Rifkind, Weston Opitz Jan 2017

A New Species Of Madoniella Pic (Coleoptera: Cleridae) From Chiapas, Mexico, Jacques Rifkind, Weston Opitz

Insecta Mundi

Opitz (2011) revised the New World clerid genus Madoniella Pic, and recognized 74 species. We describe and illustrate Madoniella fitzgeraldae, new species (Coleoptera: Cleridae), recently discovered in Chiapas, México.


Southeast Farallon Island Arthropod Survey, Jeffrey Honda, Bret Robinson, Michael Valainis, Rick Vetter, Jaime Jahncke Jan 2017

Southeast Farallon Island Arthropod Survey, Jeffrey Honda, Bret Robinson, Michael Valainis, Rick Vetter, Jaime Jahncke

Insecta Mundi

Effective island conservation depends on thorough biodiversity surveys and species assessment. The U.S. Fish and Wildlife Service in coordination with Point Blue Conservation Science undertook a two-year insect survey of the Farallon Islands, California, in order to catalog current insect and spider species on the island and to gather information that will be used to examine prey dynamics to aid in the conservation of the endemic salamander Aneides lugubris (Hallowell). The report lists 11 insect orders representing 60 families, 107 genera and 112 insect species on Southeast Farallon Island. Holometabolous orders were the most represented on the island with Coleoptera …


Identifi Cation Of A New Species Of Aphis (Hemiptera: Aphididae) Based On Distinct Morphology Rather Than Dna Barcoding, Doris Lagos-Kutz, D. J. Voegtlin, Glen Hartman Jan 2017

Identifi Cation Of A New Species Of Aphis (Hemiptera: Aphididae) Based On Distinct Morphology Rather Than Dna Barcoding, Doris Lagos-Kutz, D. J. Voegtlin, Glen Hartman

Insecta Mundi

Aphis elena Lagos-Kutz and Voegtlin, sp. nov. (Hemiptera: Aphididae), is described from specimens collected in Illinois, USA, on the North American native plant, Pycnanthemum virginianum (L.) T. Dur. & B.D. Jacks. ex B.L. Rob. & Fernald (Family: Lamiaceae). Both apterous and alate viviparae are described and illustrated, and a dichotomous key is provided to apterous and alate viviparae of the six species of Aphis that have been recorded on plants in the family Lamiaceae in North America. Neighbor-joining analysis of cytochrome oxidase 1 (Cox1) indicated a close relationship of the new species with Aphis monardae Oestlund, which also …


Two New Species Of Cerambycidae (Coleoptera) From Colombia, Antonio Santos-Silva, Juan Pablo Botero Jan 2017

Two New Species Of Cerambycidae (Coleoptera) From Colombia, Antonio Santos-Silva, Juan Pablo Botero

Insecta Mundi

Taeniotes antonkozlovi Santos-Silva and Botero, new species (Cerambycidae, Lamiinae, Monochamini) and Amphelictus antonkozlovi Santos-Silva and Botero, new species (Cerambycidae, Cerambycinae, Cerambycini, Sphallotrichina) are described from Colombia.


Population Dynamics Of The Wheat Curl Mite (Acari: Eriophyidae) During The Heading Stages Of Winter Wheat, Anthony J. Mcmechan, Gary Hein Jan 2017

Population Dynamics Of The Wheat Curl Mite (Acari: Eriophyidae) During The Heading Stages Of Winter Wheat, Anthony J. Mcmechan, Gary Hein

Department of Entomology: Faculty Publications

The wheat curl mite (Aceria tosichella Keifer) is the only known vector of three viruses in wheat—Wheat streak mosaic virus, Wheat mosaic virus, and Triticum mosaic virus. The economic impact of this disease complex is linked to the presence of suitable hosts prior to winter wheat maturing in early summer and the movement of wheat curl mite from wheat to oversummering hosts prior to wheat harvest. Previous research has documented the prevalence and density of mite populations on maturing wheat heads; however, these studies were limited to a few late stages of wheat. A study was conducted …


Record Breaking Achievements By Spiders And The Scientists Who Study Them, Stefano Mammola, Peter Michalik, Eileen Hebets, Marco Isaia Jan 2017

Record Breaking Achievements By Spiders And The Scientists Who Study Them, Stefano Mammola, Peter Michalik, Eileen Hebets, Marco Isaia

Eileen Hebets Publications

Organismal biology has been steadily losing fashion in both formal education and scientific research. Simultaneous with this is an observable decrease in the connection between humans, their environment, and the organisms with which they share the planet. Nonetheless, we propose that organismal biology can facilitate scientific observation, discovery, research, and engagement, especially when the organisms of focus are ubiquitous and charismatic animals such as spiders. Despite being often feared, spiders are mysterious and intriguing, offering a useful foundation for the effective teaching and learning of scientific concepts and processes. In order to provide an entryway for teachers and students—as well …


Rag1 Soybean Photosynthetic Response To Biotype 2 Aphid Colonization And Feeding, Katy Hillard Jan 2017

Rag1 Soybean Photosynthetic Response To Biotype 2 Aphid Colonization And Feeding, Katy Hillard

Department of Entomology: Distance Master of Science Projects

Over the past ten years, the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), has been one of the principal insect threats to commercial soybean, Glycine max (L.) Merr., production in the United States. Resistance genes identified from native soybean have been incorporated into commercial varieties to provide protection against aphid feeding damage. The biology of the pest lends itself to rapid buildup of biotypes capable of overcoming host plant resistance. Single gene resistance sources have displayed low levels of durability against aphids. The first aphid resistant commercial soybean line released in the United States contained the Rag1 gene, which was …


Interdependent Relationships And Biodiversity, Lena Teselle Jan 2017

Interdependent Relationships And Biodiversity, Lena Teselle

Department of Entomology: Distance Master of Science Projects

This project is a composite of three Next Generation Science Standard(NGSS) aligned lessons aimed at middle school science students. Three E-Learning modules have been developed and uploaded to www.DiscoverEntomology.comto supplement the classroom lessons in a flipped model, whereby students complete the online lesson prior to attending class, application of concepts are explored through activity. Over the course of five to six class sessions and a field trip, students will build their understanding of interactions within ecosystems, the interdependent relationships that form between and among organisms, and the importance of biodiversity, using insects as model study subjects. This project serves to …


Use Of Baited Attract And Kill Stations As Ipm Alternative To Control Invasive Drosophila Suzukii Matsumura (Spotted Wing Drosophila), Timothy Lampasona Jan 2017

Use Of Baited Attract And Kill Stations As Ipm Alternative To Control Invasive Drosophila Suzukii Matsumura (Spotted Wing Drosophila), Timothy Lampasona

Department of Entomology: Distance Master of Science Projects

The newly invasive Drosophila suzukii Matsumura (Spotted Wing Drosophila, SWD) is an economically significant pest of berries and other small fruit in the Northeast United States. Methods of controlling this insect typically consist of frequent sprays of conventional insecticide, often with long pre-harvest intervals. This experiment is intended to determine the efficacy of a unique Attract and Kill (AtK) design using super-absorbent gelatinous media saturated with highly attractive SWD bait adhered to durable netting, sprayed regularly with a range of insecticides. Our lab and field studies determined that presence of AtK stations treated with insecticides placed in vicinity of raspberries …


Pest Management: The Historical Management And Developed Resistance Of Western Corn Rootworm, Insect Resistance Management, And The Future Of Control, Mollie Mcmahon Jan 2017

Pest Management: The Historical Management And Developed Resistance Of Western Corn Rootworm, Insect Resistance Management, And The Future Of Control, Mollie Mcmahon

Department of Entomology: Distance Master of Science Projects

Western corn rootworm, Diabrotica virgifera virgifera Le Conte, is a corn pest in the United States that has demonstrated overwhelming success an overcoming pest management strategies. Whether it is cultural, chemical, or transgenic control, western corn rootworm has managed to adapt, develop resistance, and create chaos among farmers and agriculture industries. Insect Resistance Management is a component of the Environmental Protection Agency and the Excellence Through Stewardship global organization. The Environmental Protection Agency regulates resistance through laws and regulations and with the help of other government organizations. The goal is to delay resistance, extend trait durability, and protect the environment …


Entomophagy: Insect And Arthropod Grub!, Buddy Roper Jan 2017

Entomophagy: Insect And Arthropod Grub!, Buddy Roper

Department of Entomology: Distance Master of Science Projects

Recipes:

Appetizers………………………………. 3

Entrees………………………………….. 27

Desserts…………………………………. 44

Recipe Sources…………………………. 56

Discussion and PowerPoint slides attached below as supplemental file


What Induces Female Kicking In Callosobruchus Maculatus? Disentangling The Effects Of Male Traits On Female Mating Decisions, William I. Licht Jan 2017

What Induces Female Kicking In Callosobruchus Maculatus? Disentangling The Effects Of Male Traits On Female Mating Decisions, William I. Licht

Theses and Dissertations--Entomology

Sexual conflict over mating duration drives the evolution of male and female adaptations that facilitate the manipulation of mating interactions in their favor. This conflict drives the evolution of traits that improve the fitness of the focal sex despite inflicting costs on mates. However, males can express multiple traits that increase and decrease female fitness simultaneously. When the effects of male traits on female fitness increase or decrease with duration of exposure, females traits that influence mating duration are selected upon. Females of Callosobruchus maculatus, a bruchid bean beetle, kick mates to forcefully end copulation. Although both negative effects …


A New Tachinid Genus And Species Record For North America: Iceliopsis Borgmeieri Guimarães, John O. Stireman Iii, Jane E. Dell Jan 2017

A New Tachinid Genus And Species Record For North America: Iceliopsis Borgmeieri Guimarães, John O. Stireman Iii, Jane E. Dell

Biological Sciences Faculty Publications

The Iceliini are a small, enigmatic New World tribe of Tachininae consisting of three genera, Icelia RobineauDesvoidy, Iceliopsis Guimarães, and Erviopsis Townsend, and five recognized species (Guimarães 1976). All known species are exclusively Neotropical in distribution with the exception of Icelia triquetra (Olivier), which ranges from Brazil, through Central America, and as far north as New York state (O’Hara & Wood 2004). Members of the tribe are generally medium-sized (ca. 7–12 mm), elongate, yellowish or grayish in color, and resemble Dexiini or Leskiini in general appearance. Species of Iceliini are relatively rarely collected and there is but a single host …


The Fleas (Arthropoda: Insecta: Siphonaptera) Of Arkansas, Chris T. Mcallister, Lance A. Durden, Henry W. Robison, Matthew B. Connior Jan 2017

The Fleas (Arthropoda: Insecta: Siphonaptera) Of Arkansas, Chris T. Mcallister, Lance A. Durden, Henry W. Robison, Matthew B. Connior

Journal of the Arkansas Academy of Science

Fleas (Insecta: Siphonaptera) are important ectoparasites of cats, dogs, other mammals (including humans), and birds, and are an important component of the biota of North America. In addition, they can be nuisance biters and serve as vectors or intermediate hosts of several flea-borne disease agents and parasites that negatively affect mammals and birds. In Arkansas, there have been no recent comprehensive summaries of fleas in the last 45+ years. Here, we provide a summary of the 29 species of fleas within 7 families that have been recorded from the state, update their taxonomy, and note their medical and veterinary importance.


A Survey Of Non-Crop Plants As Alternative Hosts To Raspberries For Drosophila Suzukii (Spotted Wing Drosophila), Bennur Agbaba Jan 2017

A Survey Of Non-Crop Plants As Alternative Hosts To Raspberries For Drosophila Suzukii (Spotted Wing Drosophila), Bennur Agbaba

Electronic Theses and Dissertations

The spotted wing fruit fly (SWD), Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), is a pest of small fruit crops. Unlike most other Drosophila species, this insect can oviposit into ripe fruits, rendering them unmarketable. Drosophila suzukii is spreading quickly throughout the continental United States including South Dakota, and causing serious damage to horticultural crops, particularly those within the fruit industry. This study determines the D. suzukii host plant both commercial crops and native plants, and defines non-crop host plants by season in South Dakota. Further, it confirms the occurrence of the fly in southeastern South Dakota and identifies high-risk infestation areas …


A Description Of Variation In Fecundity Between Two Populations Of Wolf Spider Rabidosa Rabida In Searcy Arkansas Using Brood Size Measurements, Brandon Hogland, Ryan Stork, Amber Hug Jan 2017

A Description Of Variation In Fecundity Between Two Populations Of Wolf Spider Rabidosa Rabida In Searcy Arkansas Using Brood Size Measurements, Brandon Hogland, Ryan Stork, Amber Hug

Journal of the Arkansas Academy of Science

Fecundity, a very important population variable, can be estimated by measuring the number of juveniles hatching out of individual egg sacs. Rabidosa rabida is a large wolf spider that is common in Arkansas and much of the eastern portion of North America. This study attempts to expand previous estimates of variation in fecundity made for this species by Reed and Nicholas in Mississippi. We hypothesized that a significant variation would be found in fecundity estimates between two populations in Arkansas. We also hypothesized that this variation would be similar to the variation reported in Mississippi. Two populations of R. rabida …


A Comparison Of Benthic Macroinvertebrate Assemblages Between Perennial And Intermittent Headwater Streams Of The Mattole River In Northern California, Usa, Mason S. London Jan 2017

A Comparison Of Benthic Macroinvertebrate Assemblages Between Perennial And Intermittent Headwater Streams Of The Mattole River In Northern California, Usa, Mason S. London

Cal Poly Humboldt theses and projects

Intermittent streams are common throughout the world and comprise 60% or more of total river lengths in the conterminous United States. Despite their prevalence, intermittent streams are understudied, particularly first-order headwater streams, which are vital for maintaining the function, health and biotic diversity of river networks. In June 2016, I sampled five intermittent and five perennial headwater streams in the Mattole River watershed in northwestern coastal California, USA, to compare benthic macroinvertebrate (BMI) assemblages between intermittent and perennial streams. BMI samples were collected using a 500µm mesh D-net at eight randomly located riffles along a 150-m reach, and then composited, …