Zoology Commons^™

Swimming Dynamics And Propulsive Efficiency Of Squids Throughout Ontogeny, Ian K. Bartol, Paul S. Krueger, Joseph T. Thompson, William J. Stewart

Biological Sciences Faculty Publications

Synopsis Squids encounter vastly different flow regimes throughout ontogeny as they undergo critical morphological changes to their two locomotive systems: the fins and jet. Squid hatchlings (paralarvae) operate at low and intermediate Reynolds numbers (Re) and typically have rounded bodies, small fins, and relatively large funnel apertures whereas juveniles and adults operate at higher Re and generally have more streamlined bodies, larger fins, and relatively small funnel apertures. These morphological changes and varying flow conditions affect swimming performance in squids. To determine how swimming dynamics and propulsive efficiency change throughout ontogeny, digital particle image velocimetry (DPIV) and kinematic …

Oviposition Behavior Partitions Aquatic Landscapes Along Predation And Nutrient Gradients, C. A. Binckley, W. J. Resetarits Jr.

Biological Sciences Faculty Publications

That individuals attempt to minimize the ratio of mortality risk/growth rate (μ/g) when foraging within individual habitat patches is well established. Do species partition among spatially discrete communities embedded in complex landscapes in a similar manner? We investigated how 3 ovipositing species (2 Hyla treefrogs and a hydrophilid beetle, Tropisternus lateralis) responded to simultaneous gradients of nutrients and predation risk. Species partitioned our experimental metacommunity primarily by reducing oviposition with fish. Tropisternus positively responded to increased nutrients, but the effect decreased with increasing risk, as predicted by μ/g theory. Use of fish habitats by Tropisternus was unrelated to breeding …

Population Ecology Of The Golden Mouse, Robert K. Rose

Biological Sciences Faculty Publications

An understanding of the population dynamics of a species requires knowledge of the major life-history parameters of a population, including age at maturity, distribution of age classes, and lifetime reproductive contribution of the sexes, sex ratio, length of the breeding season, mean litter size, rates of growth and survival, and life span. Because few long-term studies have been conducted with Ochrotomys nuttalli as the focal species of investigation, only fragmentary information is available for many population parameters. As importantly, densities of golden mice often are low, making them difficult to evaluate statistically. Little has been published on age at maturity …

Prey Naiveté: Evolutionary And Ecological Implications, Jonathan G. Cox

All-Inclusive List of Electronic Theses and Dissertations

Despite its ecological importance, the concept of prey naivete has become a biological truism that receives little study. I explored the evolution of naivete and its likely influence on two major ecological patterns: a) the historically greater destructiveness of freshwater predator introductions, and b) the greater strength of aquatic trophic cascades. In a review of the ecological literature, I demonstrate that the conditions for the evolution of naivete (isolation) exist in freshwater habitats at multiple spatial scales. In addition, I show that freshwater prey exhibit naivete which could be responsible for the high impacts of freshwater predator introductions. I then …

Designation Of A Neotype For Leptodactylus Gracilis (Duméril And Bibron, 1840) (Amphibia: Leptodactylidae), Rafael O. De Sá, A. Dubois, A. Ohler

Biology Faculty Publications

The examination of the preserved specimens in the herpetological collection of the Museum National d'Histoire Naturelle, along with a review of the original literature, indicates that no extant specimen can be undoubtedly identified as the holotype of Leptodactylus gracilis (DumCri.l and Bibron, 1840). Furthermore, it revealed that the type locality recently assigned to this taxon is in error.

Effects Of Calcium Availability On The Reproductive Output Of Insectivorous Bats, Christina M. Booher

All-Inclusive List of Electronic Theses and Dissertations

Reproduction is a period of high calcium demand in vertebrates, and calcium deficiency can limit reproductive output in mammals. Insects are a poor calcium source, suggesting that insectivorous species are more likely to be calcium deficient. Pregnant big brown bats (Eptesicus fuscus) consume 10 times less calcium than they are estimated to require. To accommodate calcium demand during pregnancy, many mammals mobilize more calcium from the skeleton, and extensive bone loss has been observed in some bats during pregnancy. A conflict may arise between the female and developing embryo over allocation of limited calcium supplies, which could limit reproductive output …

Description Of The Tadpole Of Leptodactylus Pustulatus Peters, 1870 (Anura: Leptodactylidae), Rafael O. De Sá, Reuber Brandão, Lorena Dall'ara Guimarães

Biology Faculty Publications

The external morphology and oral disc of the tadpole of Leptodactylus pustulatus Peters, 1870, are described and illustrated for Gosner stage 39. The internal oral anatomy was analyzed with SEM at Gosner stage 36 whereas chondrocranial anatomy is reported for Gosner stage 35. The overall characteristics do not depart from those known for the genus Leptodactylus and they particularly agree for those of the melanonotus species group. The labial tooth row formula is 2(2)/3. Observations are presented that suggest that L. pustulatus engages in larval parental care.

Resumo

São descritas a morfologia externa e o disco oral do girino de …

The Tadpole Of Eupsophus Queulensis (Anura, Cycloramphidae), Diana R. Cárdenas-Rojas, Alberto Veloso, Rafael O. De Sá

Biology Faculty Publications

The genus Eupsophus is characterized by endotrophic larvae that inhabit water-filled cavities. The larvae feed from large yolk reserves during metamorphosis. The external morphology has been described for four of the ten known species and data on larval chondrocranial morphology are available only for one. We describe the extema1 morphology, oral disc and chondrocranial anatomy of the larvae of Eupsophus queulensis. The characteristics of E. queulensis tadpoles are compared with those of other Eupsophus larvae.

Identification And Control Of Pest Slugs And Snails For Broadacre Crops In Western Australia, Svetlana Micic, Ken Henry, Paul Horne

Bulletins 4000 -

The numbers of slugs and snails have increased in broadacre cropping in Western Australia with the use of minimum tillage and stubble-retention practices. The organic content of paddocks increases under such systems, providing an increased food source especially to young slugs and snails. Soil moisture content is greater over summer leading to higher survival levels of slugs and snails.

Slug and snail pests in Australia have come from other countries, mainly the Mediterranean region. They damage plant seeds (mainly legumes), recently germinated seeds, seedlings and leaves and can be a contaminant of grain at harvest.

The Tadpole Of Leptodactylus Notoaktites Heyer, 1978 (Anura, Leptodactylidae), Rafael O. De Sá, José A. Langone, Magno V. Segalla

Biology Faculty Publications

The external morphology and oral disc of the tadpole of Leptodactylus notoaktites Heyer, 1978, are described and illustrated for Gosner’s stage 33. The internal oral anatomy was analyzed under SEM at Gosner’s stage 36 whereas chondrocranial anatomy is reported for Gosner’ stage 38. The morphology of this tadpole is compared with those available for other species of the L. mystaceus complex. The overall characteristics do not depart from those known for the genus Leptodactylus and they particularly agree for those of the fuscus species group. The labial tooth row formula is 2(2)/3.

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.

Karyotypes Of Eight Species Of Leptodactylus (Anura, Leptodactylidae) With A Description Of A New Karyotype For The Genus, Renata Cecília Amaro-Ghilardi, Gabriel Skuk, Rafael O. De Sá, Miguel Trefaut Rodrigues, Yatiyo Yonenaga-Yassuda

Biology Faculty Publications

Karyotypes of eight species of Leptodactylus (Anura, Leptodactylidae) with a description of a new karyotype for the genus. Eight species of the Neotropical genus Leptodactylus were karyologically studied: seven of them (L. gracilis, L. mystacinus, L. petersii, L. pustulatus, L. macrosternum, L. ocellatus, L. labyrinthicus) presented 2n=22 and L. silvanimbus showed a distinctive karyotype with 2n=24. Nucleolar organizer regions (Ag-NORs) were detected in two different pairs of chromosomes: pair 4 at the proximal region of the long arm of one individual of L. mystacinus from São Paulo state and of L. petersii; and …

Genetic Resolution Of The Enigmatic Lesser Antillean Distribution Of The Frog Leptodactylus Validus (Anura, Leptodactylidae), Keneth Yanek, W. R. Heyer, Rafael O. De Sá

Biology Faculty Publications

Leptodactylus validus has an unusual distribution, inhabiting Trinidad, Tobago, and the Lesser Antilles, but not the mainland of South America. This distribution is inconsistent with other distribution patterns observed for these islands. Although slight variation in adult morphology has been observed among the different island populations of L. validus, call data suggest the presence of a single species. Calls of L. pallidirostris from Venezuela and Brazil suggested that this taxon might be conspecific with L. validus. Sequence data from the 12S and 16S mt rDNA genes indicate that L. validus represents a single species throughout its distribution and is conspecific …

Rana Ocellata Linnaeus, 1758 (Currently Leptodactylus Ocellatus; Amphibia, Anura): Proposed Conservation Of Usage Of The Specific Name By The Designation Of A Neotype, W. Ronald Heyer, Ulisses Caramaschi, Rafael O. De Sá

Biology Faculty Publications

The purpose of this application, under Article 75.6 of the Code, is to conserve the usage of the specific name of Rana ocellata Linnaeus, 1758 for a species of leptodactylid frog from South America by the designation of a neotype. Prevailing usage of the name is threatened by the identity of the type specimen which is a different species than that which is currently known as Leptodactylus ocellatus. It is proposed that all name-bearing types be set aside and a neotype designated in accord with prevailing usage.

An Experimental Approach To Modeling The Strength Of Canine Teeth, Patricia W. Freeman, Cliff A. Lemen

School of Natural Resources: Faculty Publications

The strength of canine teeth in several carnivores is found through direct fracture experiments. The average forces required to break the canines of adult animals are coyote 1170 N, red fox 533 N, bobcat 737 N and raccoon 512 N. Stresses created in teeth at the breaking load are predicted by finite-element analysis and beam theory. The ultimate tensile stress sustainable in these teeth is 338 MPa in adult animals. The large pulp cavity in the canines of young animals significantly weakens the bases of their teeth (by about 25%), but as the animal ages the pulp cavity decreases and …

Rapid Assimilation Of Yolk Enhances Growth And Development Of Lizard Embryos From A Cold Environment, Melissa Ann Blake

All-Inclusive List of Electronic Theses and Dissertations

Selection for rapid growth in cold environments results in a geographic pattern known as countergradient variation. The eastern fence lizard, Sceloporus undulatus, exhibits countergradient variation in growth rate across latitudinal clines. In a common-garden experiment, S. undulatus embryos from cold environments grew more efficiently than embryos warm environments, even when the energetic contents of eggs were equalized. To examine the physiological mechanisms of higher growth efficiency, I measured the energetics of embryos during the first 49 days of incubation. Specifically, I recorded body mass, residual yolk, total respiration, and developmental stage for embyos from two populations (Virginia and South Carolina). …

The Distress Calls Of Leptodactylus Chaquensis Cei, 1950 And Leptodactylus Elenae Heyer, 1978 (Anura: Leptodactylidae), José M. Padial, Rafael O. De Sá, Ignacio De La Riva

Biology Faculty Publications

We describe the distress calls of Leptodactylus chaquensis and Leptodactylus elenae. They each consist of a single, long, tonal sound with complex harmonic structure and complex frequency modulation. The distress calls of both species are different from their respective advertisement calls. Moreover, there are also clear interspecific differences. Harmonic frequencies in L. elenae are higher, there are fewer emphasized harmonics and the call is shorter and repeated at a higher rate (sometimes paired) than the call of L. chaquensis. Call duration, call rate, and position of the dominant harmonic change with the strength of the stimulus that the …

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.

Sexually Dimorphic Social Development And Female Intrasexual Chemical Signaling Of African Elephants (Loxodonta Africana), Jordana M. Meyer

College of Graduate Studies: Theses & Dissertations

Author's abstract: African elephants are a polygynous species in which males and females carry out dimorphic lifestyles. Males search and compete for reproductively active females, while females care for offspring and facilitate group cohesion. The objectives of this study was a) to compare the development of sexually dimorphic behaviors and developmental trends between young male and female wild African elephants and b) to determine the ability of captive female African elephants to discern between the follicular and luteal phase of conspecifics through trunk-tip contacts and the investigation of urine, and whether the reproductive phase of the receiver affected the response …

Leptodactylus Fragilis (Brocchi): White-Lipped Thin-Toed Frog, Miriam M. Heyer, W. Ronald Heyer, Rafael O. De Sá

Biology Faculty Publications

Adult Leptodactylus fragilis are small. The head is longer than wide, and the hind limbs are moderately long (Table 1; Heyer and Thompson 2000 provided definitions of adult size and leg length categories for Leptodactylus). Male vocal sacs are laterally expanded and range from lightly gray speckled to darkly pigmented. Male snout is spatulate; female snout is rounded. Male forearms are not hypertrophied and males lack asperities on the thumbs and chest. The dorsum is spotted or blotched with dark markings, which are often chevron-shaped and sometimes confluent. The supratympanic fold is dark brown. A pair of dorsolateral folds …

Hybridization Of Lythrurus Fasciolaris (Cope) And Lythrurus Umbratilis (Girard) (Cypriniformes: Cyprinidae) In The Ohio River Basin, Robert L. Hopkins Ii

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Robert L. Hopkins, II on November 14, 2005.

A Phylogenetic Analysis Of Vanzolinius Heyer, 1974 (Amphibia, Anura, Leptodactylidae): Taxonomic And Life History Implications, Rafael O. De Sá, W. Ronald Heyer, Arley Camargo

Biology Faculty Publications

The validity of the monotypic leptodactylid frog genus Vanzolinius Heyer, 1974 has been questioned recently. We explore the relationship of Vanzolinius discodactylus within the cluster of closely related genera Adenomera, Leptodacylus, and Lithodytes with both morphological and molecular data sets. Morphological and combined morphological and molecular data were analyzed using maximum parsimony; molecular data sets were analyzed with maximum likelihood methods. The resultant relationships are unambiguous in Vanzolinius being imbedded within Leptodactylus. In order to maintain Leptodactylus as a monophyletic genus, Vanzolinius is placed in the synonymy of Leptodactylus Fitzinger, 1826. The implications of relationships analyzed in …

Redescripción De La Morfología Larval Externa De Dos Especies Del Grupo De Leptodactylus Fuscus (Anura, Leptodactylidae), José A. Langone, Rafael O. De Sá

Biology Faculty Publications

Re-description of the larval external morphology of two species of the Leptodactylus fuscus group (Anura, Leptodactylidae). The larvae of Leptodactylus gracilis (D’Orbigny y Bibron, 1840) and L. mystacinus Bumeister, 1861 are re-described and compared with previous descriptions noting intraspecific variation in oral disc characteristics (arrangement of papillae and rows of cornified teeth). The external morphological analysis of larvae of the Leptodactylus fuscus group suggest that the lack of comparable descriptions among species, as well as the lack of analyses of their intraspecific variation, limits the use of larval characteristics for diagnostic purposes.

Online Dictionary Of Invertebrate Zoology: F, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

face facet facette facetted facial facialium facies facio-orbital factor facultative faeces Fahrenholz's falcate falces falciform falciger falcis falculate falsadentes false falx famulus fan fang farctate farinaceous fascia fasciate fascicle fasciculus fasciole fascio-maculata fascio-punctate fastening fastigiate fastigium fat fate fauces fauna faunal faveolate feces fecula fecundate fecundity feedback feeder feeding feeler feet felt female femoro-alary femorogenu femorotibial femur fenestra fenestrate fenestration fenestrella fenestrule fente feral ferment fermentation ferreous ferruginous ferrule fertile fertility fertilization fertilizin festivus festoon festoons fetid fiber fibril fibrillar fibrin fibrinogen fibrocyte fibroin fibroplasm fibrous fibula fide filament filamentary filaria filariform filate filator file filial filiation filibranch filicornia filiform …

Online Dictionary Of Invertebrate Zoology: B, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

baccate bacillary bacilliform back-cross back-mutation bacteremia bacteriophagous baculiform baculite baenomere baenopoda baenosome Baer's bailer balanced balancers balanoid balantin balantine Balbiani Balbiani's bald Baldwin ballonets ballooning band barb barbate, barbatus barbula bark baroceptor, baroreceptor barotropism barrier basad basal basalar basalia basalis base basement bases basicarnal basicerite basiconic basicosta basicostal basicoxite basifemoral basifemur basilaire basilar basilateral basilemma basimandibula basimaxilla basimetrical basinym basioccludent basiophthalmite basiperiphallus basipharynx basipod basipodite basiproboscis basipulvilli basirostral basis basiscopic basiscutal basisternum basistylus basitarsal basitarsus basitergal basitibial basitrich basitrichous basivalvula basket basopinacocytes batatiform Batesian bathmis bathyal bathylimnetic bathymetric bathypelagic battery batumen bave B-chromosome, bdelloid bead beaded beak beaked bean beard …

Online Dictionary Of Invertebrate Zoology: A, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

abactinal abambulacral A-band abapertural abapical abaxial abbreviate abcauline abdomen abduct aberrant abient abiocoen abiogenesis abiology abiotic abjugal ablation aboral aboriginal abortion abranchiate abreptor abscission absorption abterminal abullate abyssal abyssobenthos abyssopelagic acanthaceous acanthella acanthocephalans acanthocyst acanthodion acanthodrilin acanthoparia acanthophore acanthophorites acanthopod acanthosphenote acanthostegous acanthostyle acanthozooid acariasis Acarina acarinarium acarocecidium acarology acarophily acaryote acaudal acclimation acclivous accretion acelomate acentric Acephala acephalocyst acephalous acerata acervate acescence acetabulum achaetous achlamydate achroacyte achroglobin achroic achromasia achromatic A-chromosome achroous acia acicle aciculiform acidic acidobiontic acidophilic acidophobic acidotheca aciduric acies aciform acinacicate acinaciform acinarious aciniform acinose aclid acline aclitellate acme Acoelomata acoelous acone acontioids acraein Acraspeda acrembolic …

Online Dictionary Of Invertebrate Zoology: C, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

cadavericole caddis cadre caducous caecum Caenogaea caespitose Cainogea caisson calabar calamistrum calamus calathiform Calcarea calces calciferous calcipala calcospherites calice calicle calicoblastic caliology callous callow callus calobiosis calomus caloric calorigenic calorimetry calotte caltrop calva calx calyciform calycine calycle calyoptis calypto calyptra Calyptratae calyptron calyx camarodont camera camerostome campaniform campestral campi campodeiform campus Canadian canal canalaria canali cancellate cancrisocial cancroid cane canella canines canities cannibalism cannula canthariasis canthus capillary capillitium capita caprification capsule capuliform caput capylus caraboid carapace carbohydrates carcinoid carcinology cardate cardiac cardines cardinosternal cardinostipital cardioblasts cardiocoelomic cardo cardosubmental caria caridean caridoid carina carious carmine carnivore carnose Carolinian carolites carotene carotin …

Online Dictionary Of Invertebrate Zoology: D, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

dacryoid dactyl dactylethra dactylognathite dactyloid dactylopodite dactylopore dactylozooid dactylus dance daphnid dart dart sac Darwinism dauer larvae dauermodification daughter daughter cells daughter cyst day-eye De Vriesianism dealate dealation death deaurate decacanth decalcification decamerous decapodid larvae decathecal decephalic deciduous deck declinate declivitous declivous deconjugation decorticate decumbent decurved decussated dedetermination dedifferentiation defaunate defecate deferent deficiency definition definitive host deflected deflected front deflexed defoliator deformed degenerate degenerate code degeneration dehiscence dehiscent deirids delamination delimitation, diagnosis, differential diagnosis delthyrial delthyrium deltidial deltidium deltoid demanian demarcation deme demersal demibranchs demiplate demiprovinculum Demospongiae denatant dendriform dendrite dendritic thickening dendrobranch dendrogram dendroid dendron dendrophagous dendrophilous denematize denizen …

Online Dictionary Of Invertebrate Zoology: E, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

ear eave eaves eburnean ecalcarate ecarinate ecaudate ecbolic eccentric ecdemic ecdysial ecdysis ecdysone ecdysotrophic ecesis echinate echinating Echinodermata echinoderms echinopaedium echinostome echiopluteus Echiura echiurans ecitophile ecium eclectic eclipsed eclosion ecoclimate ecocline ecogeographical ecological ecology ecomorph ecomorphic economic ecoparasite ecophene ecophenotype eco¬phenotypic ecosite ecospecies ecosystem ecotone ecotype ecsoma ectad ectadenia ectal ectally ectoblast ectochone ectocochleate ectocommensal ectocrine ectocyst ectoderm ectodermal ectognathous ectohormones ectolecithal ectomere ectomesenchyme ectomesoderm ectoneural ectooecium ectoparasite ectopara¬sitic ectophagous ectophallus ectopic ectoplasm ectoproct Ectoprocta ectoprocts ectoptygma ectosomal ectosome ectospermalege ectostracum ectosymbion ectosymbi¬ont ectothermal ectotrophous ectozoon ecumenical edaphic edaphic factors edaphon edeagus edentate edentulous edge editum edoeagus effect effector efferent …

Online Dictionary Of Invertebrate Zoology: G, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott L. Gardner

Armand R. Maggenti Online Dictionary of Invertebrate Zoology

galea gallery gallicola gallicolae gallicolous galliphagous galvanotaxis galvanotropism gametangiogamy gametangium gamete gametocyte gametogamy gametogenesis gametogenetic gametogeny gametogonium gametogony gametotoky gamma gamobium gamodeme gamogenesis gamogonic gamogony gamones gamophase ganglia gangliate ganglion ganglionic gap gaper gaping gas gaseous gaster gasterostome gasterotheca gastraea gastraeum gastral gastralia gastric gastrilegous gastrocoele gastrocoelus gastrodermis gastro-ileal gastrolith gastroorbital Gastropoda gastropods gastropores Gastrotricha gastrotrichs gastrovascular gastrozooid gastrula gastrular gathering Gause's gelatigenous gelatin gelatine gelatinous geminate gemma gemmate gemmation gemmipara gemmipares gemmule gemmulostasin gena genacerore genae genal genaponta genatasinus gene genera generalized generation generative generitype generotype Gene's genesiology genetic genetics genic genicular geniculate genital genitalia genitointestinal genocline genocopy genodeme …