Revista Nicaraguense De Biodiversidad
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Rainforest Plant Developed 'Sonar Dish' to Attract Pollinating Bats
Rainforest plant developed 'sonar dish' to attract pollinating bats How plants sound as well as how they look helps them to attract pollinators, a new study has found. Researchers discovered that a rainforest vine, pollinated by bats, has evolved dish-shaped leaves with such conspicuous echoes that nectar-feeding bats can find its flowers twice as fast by echolocation. Flowering inflorescence of Marcgravia evenia. (A) dish-shaped leaf, (B) ring of flowers most of them in the male phase with anthers shedding pollen, (C) cup-like nectaries. How plants sound as well as how they look helps them to attract pollinators, a new study by scientists at the University of Bristol, UK, and the Universities of Erlangen and Ulm, Germany has found. The researchers discovered that a rainforest vine, pollinated by bats, has evolved dish-shaped leaves with such conspicuous echoes that nectar-feeding bats can find its flowers twice as fast by echolocation. The study is published in Science. While it is well known that the bright colours of flowers serve to attract visually-guided pollinators such as bees and birds, little research has been done to see whether plants which rely on echolocating bats for pollination and seed dispersal have evolved analogous echo-acoustic signals. The Cuban rainforest vine Marcgravia evenia has developed a distinctively shaped concave leaf next to its flowers which, the researchers noticed, is reminiscent of a dish reflector. By analyzing the leaf's acoustic reflection properties, they found that it acts as an ideal echo beacon, sending back strong, multidirectional echoes with an easily recognizable, and unvarying acoustic signature -- perfect for making the flower obvious to echolocating bats. -
Evolution and Ontology 1 This Is a Final Manuscript in Press: To
Evolution and Ontology 1 This is a Final Manuscript In Press: To appear in the International Journal of Science Education The Nature of Naive Explanations of Natural Selection Michel Ferrari & Michelene T.H. Chi Learning Research and Development Center University of Pittsburgh [email protected] Running head: Evolution and Ontology Address correspondence to: Michelene T.H Chi Learning Research and Development Center 3939 O’Hara Street Pittsburgh, PA 15260 email: [email protected] 31 March 1998 Evolution and Ontology 2 Abstract Unlike some pivotal ideas in the history of science, the basic notion of natural selection is remarkably simple and so one might expect most students to easily grasp the basic principles of the Darwinian theory; yet many students nevertheless have difficulty understanding Darwinian evolution. We suggest that misconceptions about natural selection arise from mistaken categorization. Our thesis for explaining students’ failure to understand this concept, or evolution in general, is not that they necessarily fail to understand individual Darwinian principles; rather, they often fail to understand the ontological features of equilibration processes, of which evolution is one instance. They thus attribute the evolutionary process in general, and natural selection in particular, with event-like properties. For example, naive students appear to focus on the idea of survival of the fittest, but embed this idea within an event ontology that involves actors struggling to overcome obstacles and achieve goals. Results showed that most naive subjects’ evolutionary explanations reflected an event ontology. Furthermore, event ontology attributes were positively correlated with Non-darwinian explanations; by contrast, equilibration attributes, when present, were positively correlated with key Darwinian principles. -
A Molecular Phylogeny of the Neotropical Butterfly Genus Anartia
MOLECULAR PHYLOGENETICS AND EVOLUTION Molecular Phylogenetics and Evolution 26 (2003) 46–55 www.elsevier.com/locate/ympev A molecular phylogeny of the neotropical butterfly genus Anartia (Lepidoptera: Nymphalidae) Michael J. Blum,a,b,* Eldredge Bermingham,b and Kanchon Dasmahapatrab,c a Department of Biology, Duke University, Durham, NC 27705, USA b Smithsonian Tropical Research Institute, Naos Island Molecular Laboratories, Unit 0948, APO-AA 34002-0948, Panama, FL, USA c Department of Biology, Galton Laboratory, University College, 4 Stephenson Way, London NW1 2HE, UK Received 2 August 2001; received in revised form 17 June 2002 Abstract While Anartia butterflies have served as model organisms for research on the genetics of speciation, no phylogeny has been published to describe interspecific relationships. Here, we present a molecular phylogenetic analysis of Anartia species relationships, using both mitochondrial and nuclear genes. Analyses of both data sets confirm earlier predictions of sister species pairings based primarily on genital morphology. Yet both the mitochondrial and nuclear gene phylogenies demonstrate that Anartia jatrophae is not sister to all other Anartia species, but rather that it is sister to the Anartia fatima–Anartia amathea lineage. Traditional bi- ogeographic explanations for speciation across the genus relied on A. jatrophae being sister to its congeners. These explanations invoked allopatric divergence of sister species pairs and multiple sympatric speciation events to explain why A. jatrophae flies alongside all its congeners. The molecular phylogenies are more consistent with lineage divergence due to vicariance, and range expansion of A. jatrophae to explain its sympatry with congeners. Further interpretations of the tree topologies also suggest how morphological evolution and eco-geographic adaptation may have set species range boundaries. -
Final Lower Rio Grande Valley and Santa Ana National Wildlife
Final Lower Rio Grande Valley and Santa Ana National Wildlife Refuges Comprehensive Conservation Plan September 1997 (Reprint March 1999) U.S. Fish and Wildlife Service U.S. Department of the Interior Cover Artwork by Brian Cobble Table of Contents VISION........................................................................................................................................... 5 Executive Summary................................................................................................................... 6 1.0 Introduction and Regional Setting................................................................................. 8 1.1 LRGV Challenges............................................................................................... 8 2.0 Planning Perspectives and Considerations................................................................ 9 2.1 National Wildlife Refuge System ................................................................... 9 2.2 The Service & Ecosystem Management ...................................................... 9 2.3 Refuge Complex and Management Districts........................................... 10 2.4 Laguna Atascosa NWR -- A Partner with LRGV NWR............................ 10 2.5 Planning Perspectives.................................................................................... 10 2.6 The Issues.......................................................................................................... 11 2.7 The Need for Action........................................................................................ -
Ecology, Population Biology and Mortality of Euptoieta Hegesia Cramer (Nymphalidae) on Jamaica
}<mrnal <1 the Lepidopterists' Society 52(1), 1998, 9-39 ECOLOGY, POPULATION BIOLOGY AND MORTALITY OF EUPTOIETA HEGESIA CRAMER (NYMPHALIDAE) ON JAMAICA PHILLIP J. SCHAPPERT] AND JOEL S. SHORE Department of Biology, York University, 4700 Keele Street, North York, Ontario M3J IP3, Canada ABSTRACT. We examine the ecology, population biology and potential sources of mortality of Euptoieta hegesia, a tropical lowland butterfly from Jamaica, using a combina tion of captive rearing, studies of natural populations, and experimental approaches. We provide detailed observations of the life cycle and methods for captive rearing of this spe cies. We assess the relative performance of larvae on primary and secondary hostplants, distribution of larvae on the primary hostplant, hostplant population utilization, and the distribution of E. hegesia on the island. A mark-release-recapture study was conducted to estimate population parameters and we recorded sex, size, age (as estimated by wing wear), and wing damage sustained by the butterflies prior to their initial capture. We pro vide evidence that Tumera ulmifdia is the plimary hostplant of K hegesia on Jamaica and that butterfly population size is not limited by the availability of hostplants. These short lived butterflies appear to be residents of discrete hostplant populations and experience high mortality levels. Females are damaged more frequently, show more total damage and more frequent symmetrical hindwing damage (attributablc to ground-based predators) than do males. Wc compare the results of the population study with available studies of other tropical butterflies and suggest that lowland butterfly population structure and dy namics are Significantly different from that of rainforest species. -
TERRITORIALITY and COURTSHIP BEHAVIOR in MALE Anartia Fatima (NYMPHALINAE) Cristianne Frazier
TERRITORIALITY AND COURTSHIP BEHAVIOR IN MALE Anartia fatima (NYMPHALINAE) Cristianne Frazier Department of Zoology, University of Wisconsin-Madison _______________________________________________________________ ABSTRACT Chasing behavior in butterflies may be the result of territorial defense or simply the result of mate location. Such aggressive behavior is frequently observed in male Anartia fatima. It was hypothesized that older male Anartia fatima would be more aggressive than younger males, who have less to lose if they do not defend access to females. Behavioral observations were made on 38 males. Multiple regressions were run to see how age and ambient conditions affected the behavior of the males. Older males were found to be more aggressive and spend more time in courtship, but it could not be concluded that the aggressive behavior in Anartia fatima was ultimately a result of the need to defend a territory to gain access to females. It is more likely that "aggressive" behavior is actually chasing as part of mate location and courtship behavior. Any benefits a male receives from being inherently "aggressive" as a result of the demands of courtship are secondary. Temperature was the abiotic condition factor to exhibit the most significant impact on the behavior of males. Increasing temperatures tended to result in an increase in the amount of time a male spent off of his perch and an increase in the maximum distance between perches. RESUMEN Es posible que el comportamiento de persecución en mariposas es el resultado de la defensa del territorio o de la localización de las compañeras. Este comportamiento agresivo fue observado frecuentemente en machos de Anartia fatima. -
A SKELETON CHECKLIST of the BUTTERFLIES of the UNITED STATES and CANADA Preparatory to Publication of the Catalogue Jonathan P
A SKELETON CHECKLIST OF THE BUTTERFLIES OF THE UNITED STATES AND CANADA Preparatory to publication of the Catalogue © Jonathan P. Pelham August 2006 Superfamily HESPERIOIDEA Latreille, 1809 Family Hesperiidae Latreille, 1809 Subfamily Eudaminae Mabille, 1877 PHOCIDES Hübner, [1819] = Erycides Hübner, [1819] = Dysenius Scudder, 1872 *1. Phocides pigmalion (Cramer, 1779) = tenuistriga Mabille & Boullet, 1912 a. Phocides pigmalion okeechobee (Worthington, 1881) 2. Phocides belus (Godman and Salvin, 1890) *3. Phocides polybius (Fabricius, 1793) =‡palemon (Cramer, 1777) Homonym = cruentus Hübner, [1819] = palaemonides Röber, 1925 = ab. ‡"gunderi" R. C. Williams & Bell, 1931 a. Phocides polybius lilea (Reakirt, [1867]) = albicilla (Herrich-Schäffer, 1869) = socius (Butler & Druce, 1872) =‡cruentus (Scudder, 1872) Homonym = sanguinea (Scudder, 1872) = imbreus (Plötz, 1879) = spurius (Mabille, 1880) = decolor (Mabille, 1880) = albiciliata Röber, 1925 PROTEIDES Hübner, [1819] = Dicranaspis Mabille, [1879] 4. Proteides mercurius (Fabricius, 1787) a. Proteides mercurius mercurius (Fabricius, 1787) =‡idas (Cramer, 1779) Homonym b. Proteides mercurius sanantonio (Lucas, 1857) EPARGYREUS Hübner, [1819] = Eridamus Burmeister, 1875 5. Epargyreus zestos (Geyer, 1832) a. Epargyreus zestos zestos (Geyer, 1832) = oberon (Worthington, 1881) = arsaces Mabille, 1903 6. Epargyreus clarus (Cramer, 1775) a. Epargyreus clarus clarus (Cramer, 1775) =‡tityrus (Fabricius, 1775) Homonym = argentosus Hayward, 1933 = argenteola (Matsumura, 1940) = ab. ‡"obliteratus" -
Sensory and Cognitive Constraints and Opportunities in Bats
Sensory and Cognitive Constraints and Opportunities in Bats by Jeneni Thiagavel A thesis submitted in conformity with the requirements for the Degree of Doctor of Philosophy Department of Ecology and Evolutionary Biology University of Toronto © Copyright by Jeneni Thiagavel, 2019 i Sensory and Cognitive Constraints and Opportunities in Bats Doctor of Philosophy, 2019 Jeneni Thiagavel, Department of Ecology and Evolutionary Biology, University of Toronto Here I report on three comparative studies and one review chapter addressing the relationships between sensory reliance, neuroanatomy, skull morphology and body size, as they relate to diet and foraging in bats. In chapter two, I use morphological and echolocation data to test whether (i) mass-signal frequency allometry or (ii) emitter-limited (maximum gape) signal directionality better explain the negative relationship between size and peak frequency in bats. The results suggest that body mass and forearm length were important predictors of open space echolocation call peak frequency in ways that (i) reflect species- specific size differences, and (ii) suggest the influence of preferred foraging habitat. In chapter three, I test the predictions that the ancestral bat had (i) an auditory brain design capable of supporting early laryngeal echolocation, but (ii) eyes of insufficient absolute size to allow insect tracking at night. The results suggest that bats’ common ancestor had eyes too small to allow for successful aerial hawking of flying insects at night, but an auditory brain design sufficient to afford echolocation. Further, we find that those with less sophisticated biosonar have relatively larger eyes than do sophisticated echolocators. ii In chapter four, I continue to explore apparent trade-offs between echolocation call design and vision in predatory bats. -
Plant Attractants: Integrating Insights from Pollination and Seed Dispersal Ecology
Evol Ecol DOI 10.1007/s10682-016-9870-3 Plant attractants: integrating insights from pollination and seed dispersal ecology 1 2 2 Kim Valenta • Omer Nevo • Carlos Martel • Colin A. Chapman1,3,4 Received: 29 February 2016 / Accepted: 22 October 2016 Ó Springer International Publishing Switzerland 2016 Abstract Reproduction in many angiosperms depends on attracting animals that provide pollination and seed dispersal services. Flowers and fleshy fruits present various features that can attract animal mutualists through visual, olfactory, acoustic, and tactile cues and signals, and some of these traits may result from selection exerted by pollinators and seed dispersers. Plant attractants can provide information regarding the presence, location, and quality of the reward. However, because of the different functional outcomes of pollination and seed dispersal, pollination systems are thought to be more highly specialized than seed dispersal systems. Despite these interesting parallels and contrasts, theoretical and empirical insights in the sensory ecology of pollination and seed dispersal are rarely considered together. Here, we review extant theory and data of sensory attractants from both pollination and seed dispersal systems. We discuss theoretical and empirical simi- larities and differences between pollination and seed dispersal and offer suggestions for ways in which insights from each field may benefit the other in future. Keywords Animal–plant interactions Á Communication Á Coevolution Á Foraging ecology Á Mutualism Á Sensory ecology & Kim Valenta [email protected] 1 Department of Anthropology, McGill University, Montreal, QC, Canada 2 Institute of Evolutionary Ecology and Conservation Genomics, University of Ulm, Helmholtzstr. 10-1, 89081 Ulm, Germany 3 McGill School of Environment, McGill University, Montreal, QC, Canada 4 Wildlife Conservation Society, Bronx, NY, USA 123 Evol Ecol Introduction For many plant species, particularly angiosperms, reproduction requires animals as polli- nators, seed dispersers, or both (Schaefer et al. -
Lepidoptera: Nymphalidae)
insects Article Experimental Manipulation of Dispersal Ability in A Neotropical Butterfly Anartia fatima (Lepidoptera: Nymphalidae) Robert B. Srygley 1,2 ID 1 Smithsonian Tropical Research Institute, Apdo. 2072, Balboa, Republic of Panama 2 USDA-Agricultural Research Service, Northern Plains Agricultural Research Lab, 1500 N. Central Ave., Sidney Montana, MT 59270, USA; [email protected]; Tel.: +1-406-433-9420 Received: 17 July 2018; Accepted: 21 August 2018; Published: 22 August 2018 Abstract: Research on endangered British butterflies has found that butterfly populations in small refuges evolve to allocate more mass to the thorax (flight muscle) and less to the abdomen than populations in large refuges. The observed change in mass allocation affects two morphological features relevant to flight: the flight muscle ratio (FMR) and the position of center of body mass (cmbody). The author tested whether a decrease in FMR or a change in cmbody reduced the ability to disperse by experimentally weight-loading Neotropical Anartia fatima butterflies. In one treatment group, FMR was decreased but cmbody was not altered, whereas in the second group FMR was decreased and cmbody was repositioned further posterior. In one mark–release–recapture (MRR) experiment, butterflies dispersed relatively slowly, and treatment groups did not differ significantly. In a replicate experiment, butterflies dispersed more quickly, and control butterflies dispersed more rapidly than either treatment group. Differences in dispersal were consistent with a causal relationship between FMR and movement. A more posterior cmbody had little effect on dispersal beyond that due to the change in FMR. These results support the hypothesis that an increase in mass allocation to the thorax in small, dispersed refugia is due to selection on the ability to disperse. -
Lepidoptera Are Relevant Bioindicators of Passive Regeneration in Tropical Dry Forests
diversity Article Lepidoptera are Relevant Bioindicators of Passive Regeneration in Tropical Dry Forests Luc Legal 1,* , Marine Valet 1, Oscar Dorado 2, Jose Maria de Jesus-Almonte 2, Karime López 2 and Régis Céréghino 1 1 Laboratoire écologie fonctionnelle et environnement, Université Paul Sabatier, CNRS, 31062 Toulouse, France; [email protected] (M.V.); [email protected] (R.C.) 2 Centro de Educación Ambiental e Investigación Sierra de Huautla, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Mexico; [email protected] (O.D.); [email protected] (J.M.d.J.-A.); [email protected] (K.L.) * Correspondence: [email protected] Received: 12 April 2020; Accepted: 4 June 2020; Published: 9 June 2020 Abstract: Most evaluations of passive regeneration/natural succession or restoration have dealt with tropical rain forest or temperate ecosystems. Very few studies have examined the regeneration of tropical dry forests (TDF), one of the most damaged ecosystem types in the world. Owing to their species diversity and abundance, insects have been widely used as bioindicators of restoration. Butterflies were among the most abundant and useful groups. We sampled four sites with different levels of anthropogenic disturbance in a Mexican TDF (Morelos State) and compared butterfly communities. A first goal was to examine whether adult butterflies were significant bioindicators owing to their specificity to restricted habitats. A second aim was to determine if differences exist in butterfly communities between some fields abandoned from 4–8, 8–15 and 15–30 years and a reference zone considered as primary forest. We found 40% to 50% of the species of butterflies were specifically related to a habitat and/or a level of anthropogenic disturbance. -
A Field Guide to the Butterfly Caterpillars of North America by Thomas J
CATERPILLARS IN THE FIELD AND GARDEN Field Guide Series edited by Jeffrey Glassberg Butterflies through Binoculars: The Boston- New York-Washington Region by Jeffrey Glassber g Butterflies through Binoculars: The East by Jeffrey Glassber g Butterflies through Binoculars: Florida by Jeffrey Glassberg , Marc C. Minno, and John V Calhoun Dragonflies through Binoculars: A Field Guide to Dragonflies of North America, north of Mexico by Sidney W. Dunkle Butterflies through Binoculars: The West by Jeffrey Glassber g Caterpillars in the Field and Garden: A Field Guide to the Butterfly Caterpillars of North America by Thomas J. Allen, Ji m P . Brock, and Jeffre y Glassber g CATERPILLARS IN THE FIELD AND GARDEN A FIELD GUIDE TO THE BUTTERFLY CATERPILLARS OF NORTH AMERICA Thomas J. Allen, Jim R Brock, and Jeffrey Glassberg OXTORD UNIVERSITY PRES S 2005 OXPORD UNIVERSITY PRESS Oxford University Press, Inc., publishes work s that further Oxford University's objective of excellence in research, scholarship , and education . Oxford Ne w York Auckland Cap e Town Da r es Salaam Hon g Kong Karach i Kuala Lumpur Madri d Melbourn e Mexic o City Nairob i New Delhi Shangha i Taipe i Toront o With offices i n Argentina Austri a Brazi l Chil e Czec h Republic Franc e Greec e Guatemala Hungar y Ital y Japa n Polan d Portuga l Singapor e South Korea Switzerlan d Thailan d Turke y Ukrain e Vietna m Copyright © 200 5 by Glassberg Publications Published by Oxford University Press, Inc. 198 Madison Avenue, New York, New York 1001 6 www.oup.com Oxford is a registered trademark of Oxford University Press All rights reserved.