Honey Bees Tune Colony and Individual Foraging to Multi-Predator Presence and Food Quality
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Oak Woodland Litter Spiders James Steffen Chicago Botanic Garden
Oak Woodland Litter Spiders James Steffen Chicago Botanic Garden George Retseck Objectives • Learn about Spiders as Animals • Learn to recognize common spiders to family • Learn about spider ecology • Learn to Collect and Preserve Spiders Kingdom - Animalia Phylum - Arthropoda Subphyla - Mandibulata Chelicerata Class - Arachnida Orders - Acari Opiliones Pseudoscorpiones Araneae Spiders Arachnids of Illinois • Order Acari: Mites and Ticks • Order Opiliones: Harvestmen • Order Pseudoscorpiones: Pseudoscorpions • Order Araneae: Spiders! Acari - Soil Mites Characteriscs of Spiders • Usually four pairs of simple eyes although some species may have less • Six pair of appendages: one pair of fangs (instead of mandibles), one pair of pedipalps, and four pair of walking legs • Spinnerets at the end of the abdomen, which are used for spinning silk threads for a variety of purposes, such as the construction of webs, snares, and retreats in which to live or to wrap prey • 1 pair of sensory palps (often much larger in males) between the first pair of legs and the chelicerae used for sperm transfer, prey manipulation, and detection of smells and vibrations • 1 to 2 pairs of book-lungs on the underside of abdomen • Primitively, 2 body regions: Cephalothorax, Abdomen Spider Life Cycle • Eggs in batches (egg sacs) • Hatch inside the egg sac • molt to spiderlings which leave from the egg sac • grows during several more molts (instars) • at final molt, becomes adult – Some long-lived mygalomorphs (tarantulas) molt after adulthood Phenology • Most temperate -
Crab Spiders Impact Floral-Signal Evolution Indirectly Through Removal
ARTICLE DOI: 10.1038/s41467-018-03792-x OPEN Crab spiders impact floral-signal evolution indirectly through removal of florivores Anina C. Knauer1, Moe Bakhtiari1,2 & Florian P. Schiestl1 The puzzling diversity of flowers is primarily shaped by selection and evolutionary change caused by the plant’s interaction with animals. The contribution of individual animal species to net selection, however, may vary depending on the network of interacting organisms. Here 1234567890():,; we document that in the buckler mustard, Biscutella laevigata, the crab spider Thomisus onustus reduces bee visits to flowers but also benefits plants by feeding on florivores. Uninfested plants experience a trade-off between pollinator and spider attraction as both bees and crab spiders are attracted by the floral volatile β-ocimene. This trade-off is reduced by the induced emission of β-ocimene after florivore infestation, which is stronger in plant populations where crab spiders are present than where they are absent, suggesting that plants are locally adapted to the presence of crab spiders. Our study demonstrates the context-dependence of selection and shows how crab spiders impact on floral evolution. 1 Department of Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland. 2Present address: Institute of Biology, University of Neuchatel, Rue Emile-Argand 11, 2000 Neuchatel, Switzerland. Correspondence and requests for materials should be addressedto F.P.S. (email: fl[email protected]) NATURE COMMUNICATIONS | (2018) 9:1367 | DOI: 10.1038/s41467-018-03792-x | www.nature.com/naturecommunications 1 ARTICLE NATURE COMMUNICATIONS | DOI: 10.1038/s41467-018-03792-x lant–animal interactions are a major driver of plant Crab spiders camouflage themselves on flowers to hunt flower- evolution, including both local adaptation and species visiting insects such as pollinators (Fig. -
The Effects of Native and Non-Native Grasses on Spiders, Their Prey, and Their Interactions
Spiders in California’s grassland mosaic: The effects of native and non-native grasses on spiders, their prey, and their interactions by Kirsten Elise Hill A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Environmental Science, Policy, and Management in the GRADUATE DIVISION of the University of California, Berkeley Committee in charge: Professor Joe R. McBride, Chair Professor Rosemary G. Gillespie Professor Mary E. Power Spring 2014 © 2014 Abstract Spiders in California’s grassland mosaic: The effects of native and non-native grasses on spiders, their prey, and their interactions by Kirsten Elise Hill Doctor of Philosophy in Environmental Science and Policy Management University of California, Berkeley Professor Joe R. McBride, Chair Found in nearly all terrestrial ecosystems, small in size and able to occupy a variety of hunting niches, spiders’ consumptive effects on other arthropods can have important impacts for ecosystems. This dissertation describes research into spider populations and their interactions with potential arthropod prey in California’s native and non-native grasslands. In meadows found in northern California, native and non-native grassland patches support different functional groups of arthropod predators, sap-feeders, pollinators, and scavengers and arthropod diversity is linked to native plant diversity. Wandering spiders’ ability to forage within the meadow’s interior is linked to the distance from the shaded woodland boundary. Native grasses offer a cooler conduit into the meadow interior than non-native annual grasses during midsummer heat. Juvenile spiders in particular, are more abundant in the more structurally complex native dominated areas of the grassland. -
Biodiversity and Community Structure of Spiders in Saran, Part of Indo-Gangetic Plain, India
Asian Journal of Conservation Biology, December 2015. Vol. 4 No. 2, pp. 121-129 AJCB: FP0062 ISSN 2278-7666 ©TCRP 2015 Biodiversity and Community structure of spiders in Saran, part of Indo-Gangetic Plain, India N Priyadarshini1*, R Kumari1, R N Pathak1, A K Pandey2 1Department of Zoology, D. A. V. College, J. P. University, Chhapra, India 2School of Environmental Studies, Jawaharlal Nehru University, New Delhi, India (Accepted November 21, 2015) ABSTRACT Present study was conducted to reveals the community structure and diversity of spider species in different habitat types (gardens, crop fields and houses) of Saran; a part of Indo – Gangetic Plain, India. This area has very rich diversity of flora and fauna due to its climatic conditions, high soil fer- tility and plenty of water availability. The spiders were sampled using two semi-quantitative methods and pitfall traps. A total of 1400 individual adult spiders belonging to 50 species, 29 genera and 15 families were recorded during 1st December 2013 to 28th February 2014. Spider species of houses were distinctive from other habitats it showed low spider species richness. The dominant spider fami- lies were also differs with habitat types. Araneidae, Pholcidae and Salticidae were the dominant spi- der families in gardens, houses and crop fields respectively. Comparison of beta diversity showed higher dissimilarity in spider communities of gardens and houses and higher similarity between spi- der communities of crop fields and gardens. We find that spiders are likely to be more abundant and species rich in gardens than in other habitat types. Habitat structural component had great impact on spider species richness and abundance in studied habitats. -
Mimicry and Camouflaging Spiders
Antelope Island Spider Festival Mimicry and Camouflaging Spiders In the natural world mimicry is a phenomenon These spiders will mimic ants in several encountered frequently in the natural world, different ways. Anything from moving in the and the world of spiders is no exception. same fashion as ants to even having altered body shapes. One species, Castianeira Mimicry can be used by one organism to avoid longipalpa (kass-tee-uh-NEE-ruh lon-jih-PAHL- predation by puh), even goes so far as to wave around its looking or front two legs like antennae. acting similar to a more For the most part spiders in the Corinnidae dangerous family don’t spin a web with the exception of a organism. Such small shelter, called a sac, to rest in underneath as with the a log or rock or in the leaf litter when they scarlet king aren’t hunting for food or looking for mates. snake, which is Corinnidae spiders tend to prey on smaller harmless, and insects. Some common prey items include ants, the eastern ant larvae, leaf or tree hoppers, fruit flies, and coral snake, micro moths. which is highly venomous. Another phenomenon found frequently in the natural world is camouflage, and once again Mimicry can also be used aggressively, as in a spiders utilize this as well. predator resembling its prey, or a parasite its host. There are several examples of spiders Camouflage can be used by an organism to performing this kind of mimicry. blend in with its background to avoid predation. It can also be used by an ambush There are at least two families of spiders with predator to blend in with the background so members that practice mimicry. -
Gillespie, RG 1989. Diet-Induced Color Change in the Hawaiian Happy
Gillespie, R. G . 1989 . Diet-induced color change in the Hawaiian happy-face spider Theridion grallator (Araneae, Theridiidae) . J . Arachnol ., 17:171-177 . DIET-INDUCED COLOR CHANGE IN THE HAWAIIAN HAPPY-FACE SPIDER THERIDION GRALLATOR, (ARANEAE, THERIDIIDAE) Rosemary G. Gillespie' Department of Entomology, University of Hawaii, Honolulu, Hawaii 96822' USA ABSTRACT The Hawaiian happy-face spider Theridion grallator,Simon is a smalll spider, endemic to Hawaii, where it is found under leaves in the wet and mesic forests . The abdomen is pale, translucent yellow, but variable amounts of red, black or white pigment may be superimposed on this to generate a host of patterned morphs . The translucence of the abdomen may enhance crypsis against predators searching the underside of leaves ; the variability in the superimposed pattern may serve to counteract the development of a search image by the predator . The present study documents plasticity in base coloration, which can changee rapidly and markedly following ingestion of certain types of prey . This may be merely a consequence of abdominal translucence . But it is interesting to note that it adds a whole new dimension to the color polymorphism of the species . INTRODUCTION Color change in animals is a widespread phenomenon . It is generally associated with a change in physiological state . This in turn may be induced by ontogenetic or environmental changes, or stress . In spiders, color change is known to occur under a variety of circumstances . Ontogenetic modifictions are widespread, with the adult coloration being attained in the final molt (Bonnet 1933; Homann 1946; Millot 1949). More rapid changes in color pattern have been noted in spiders of the family Araneidae, which accumulate guanine beneath the cuticle during periods of starvation, thereby developing a pattern of opaque white blotches over the abdomen (Foelix 1979) . -
Arachnida, Araneae) of Macaronesia II: the Native Forests and Dry Habitats of Madeira Archipelago (Madeira and Porto Santo Islands)
Biodiversity Data Journal 8: e47502 doi: 10.3897/BDJ.8.e47502 Data Paper Standardised inventories of spiders (Arachnida, Araneae) of Macaronesia II: The native forests and dry habitats of Madeira archipelago (Madeira and Porto Santo islands) Jagoba Malumbres-Olarte‡,§, Mário Boieiro ‡, Pedro Cardoso§,|,‡, Rui Carvalho ‡, Luís Carlos Fonseca Crespo¶,§, Rosalina Gabriel‡, Nuria Macías Hernández§,#, Octávio S. Paulo¤, Fernando Pereira‡, Carla Rego‡, Alejandra Ros-Prieto‡«, Isamberto Silva , Ana Vieira¤, François Rigal »,‡, Paulo A. V. Borges‡,˄ ‡ CE3C – Centre for Ecology, Evolution and Environmental Changes / Azorean Biodiversity Group and Universidade dos Açores, Angra do Heroísmo, Azores, Portugal § LIBRe – Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland | IUCN SSC Spider & Scorpion Specialist Group, Helsinki, Finland ¶ Biodiversity Research Institute UB, Departament Department of Evolutionary Biology, Ecology and Environmental Sciences (Arthropods), Barcelona, Spain # Island Ecology and Evolution Research Group, IPNA-CSIC, Tenerife, Canary Islands, Spain ¤ Faculdade de Ciências da Universidade de Lisboa, Departamento de Biologia Animal e Centro de Biologia Ambiental, Computational Biology and Population Genomics Group, Lisbon, Portugal « Instituto das Florestas e da Conservação da Natureza, Funchal, Portugal » Environment and Microbiology Team, Université de Pau et des Pays de l'Adour, Pau Cedex, France ˄ IUCN - SSC Mid-Atlantic Island Invertebrates Specialist -
SA Spider Checklist
REVIEW ZOOS' PRINT JOURNAL 22(2): 2551-2597 CHECKLIST OF SPIDERS (ARACHNIDA: ARANEAE) OF SOUTH ASIA INCLUDING THE 2006 UPDATE OF INDIAN SPIDER CHECKLIST Manju Siliwal 1 and Sanjay Molur 2,3 1,2 Wildlife Information & Liaison Development (WILD) Society, 3 Zoo Outreach Organisation (ZOO) 29-1, Bharathi Colony, Peelamedu, Coimbatore, Tamil Nadu 641004, India Email: 1 [email protected]; 3 [email protected] ABSTRACT Thesaurus, (Vol. 1) in 1734 (Smith, 2001). Most of the spiders After one year since publication of the Indian Checklist, this is described during the British period from South Asia were by an attempt to provide a comprehensive checklist of spiders of foreigners based on the specimens deposited in different South Asia with eight countries - Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan and Sri Lanka. The European Museums. Indian checklist is also updated for 2006. The South Asian While the Indian checklist (Siliwal et al., 2005) is more spider list is also compiled following The World Spider Catalog accurate, the South Asian spider checklist is not critically by Platnick and other peer-reviewed publications since the last scrutinized due to lack of complete literature, but it gives an update. In total, 2299 species of spiders in 67 families have overview of species found in various South Asian countries, been reported from South Asia. There are 39 species included in this regions checklist that are not listed in the World Catalog gives the endemism of species and forms a basis for careful of Spiders. Taxonomic verification is recommended for 51 species. and participatory work by arachnologists in the region. -
Insects and Plants Short-Winged Green Grasshopper Often, Insects Can Be Found on Or Around Certain Plants Because of Their Life Cycles
Order Orthoptera: Grasshoppers & Kin Insects and Plants Short-winged Green Grasshopper Often, insects can be found on or around certain plants because of their life cycles. Here Dichromorpha viridis are a few plants at Horse Hill that support a Can be green, brown, or a high diversity of insect species. mix. Found in fields. Milkweed Fork-tailed Bush Katydid Clusters of pink flowers, large Insects seed pods. Insects that eat this Scudderia furcata are often red/orange and black Found on deciduous trees to show they are poisonous. and shrubs. Their call can be heard day and night. Goldenrod Various types found in fields Order Diptera: Flies and forests. Attracts many types of pollinators and predators. Hover Fly Blackberry Toxomerus geminatus Thorny brambles. Insects use the The larva of this harmless leaves, stems, and fruit for food bee-mimic is a predator of and also for shelter. aphids, helping gardeners. Jewelweed Deer Fly Also called touch-me-not for its Chrysops sp. exploding seed pods. Usually grows near poison ivy and is a of Horse Hill Nature Only females bite, males natural remedy for such. drink nectar. The larvae are aquatic. Most common in July. Why be interested in insects? Preserve Class Arachnida: Spiders & Kin Insects dominate planet Earth in both diversity Other arthropods are also diverse, and and multitude. They come in every shape, color, captivating in their life cycles and habits. and form, some undergoing transformations that defy imagination. The vast majority of Goldenrod Crab Spider By Molly Jacobson insects are beneficial or harmless, and all are Misumena vatia fascinating. -
Spider Community Composition and Structure in a Shrub-Steppe Ecosystem: the Effects of Prey Availability and Shrub Architecture
Utah State University DigitalCommons@USU All Graduate Theses and Dissertations Graduate Studies 5-2012 Spider Community Composition and Structure In A Shrub-Steppe Ecosystem: The Effects of Prey Availability and Shrub Architecture Lori R. Spears Utah State University Follow this and additional works at: https://digitalcommons.usu.edu/etd Part of the Philosophy Commons Recommended Citation Spears, Lori R., "Spider Community Composition and Structure In A Shrub-Steppe Ecosystem: The Effects of Prey Availability and Shrub Architecture" (2012). All Graduate Theses and Dissertations. 1207. https://digitalcommons.usu.edu/etd/1207 This Dissertation is brought to you for free and open access by the Graduate Studies at DigitalCommons@USU. It has been accepted for inclusion in All Graduate Theses and Dissertations by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. SPIDER COMMUNITY COMPOSITION AND STRUCTURE IN A SHRUB-STEPPE ECOSYSTEM: THE EFFECTS OF PREY AVAILABILITY AND SHRUB ARCHITECTURE by Lori R. Spears A dissertation submitted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY in Ecology Approved: ___________________________ ___________________________ James A. MacMahon Edward W. Evans Major Professor Committee Member ___________________________ ___________________________ S.K. Morgan Ernest Ethan P. White Committee Member Committee Member ___________________________ ___________________________ Eugene W. Schupp Mark R. McLellan Committee Member Vice President for Research and Dean of the School of Graduate Studies UTAH STATE UNIVERSITY Logan, Utah 2012 ii Copyright © Lori R. Spears 2012 All Rights Reserved iii ABSTRACT Spider Community Composition and Structure in a Shrub-Steppe Ecosystem: The Effects of Prey Availability and Shrub Architecture by Lori R. -
Misumena Nigromaculata
The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2008: T58053406A58061347 Scope: Global Language: English Misumena nigromaculata Assessment by: Cardoso, P., Crespo, L.C., Silva, I., Borges, P. & Boieiro, M. View on www.iucnredlist.org Citation: Cardoso, P., Crespo, L.C., Silva, I., Borges, P. & Boieiro, M. 2018. Misumena nigromaculata. The IUCN Red List of Threatened Species 2018: e.T58053406A58061347. http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T58053406A58061347.en Copyright: © 2018 International Union for Conservation of Nature and Natural Resources Reproduction of this publication for educational or other non-commercial purposes is authorized without prior written permission from the copyright holder provided the source is fully acknowledged. Reproduction of this publication for resale, reposting or other commercial purposes is prohibited without prior written permission from the copyright holder. For further details see Terms of Use. The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN Red List Partners are: Arizona State University; BirdLife International; Botanic Gardens Conservation International; Conservation International; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas A&M University; and Zoological Society of London. If you see any errors or have any questions or suggestions on what is shown in this document, please provide us with feedback so that we can correct or extend the information provided. THE IUCN RED LIST OF THREATENED SPECIES™ Taxonomy Kingdom Phylum Class Order Family Animalia Arthropoda Arachnida Araneae Thomisidae Taxon Name: Misumena nigromaculata Denis, 1963 Taxonomic Source(s): Platnick, N.I. -
Complete Report
The effect of crab spider presence on pollinator behaviour in the field. Sarah van Broekhoven Supervisors: Marcel Dicke Mariella Herberstein Felipe Gawryszewski Table of content Introduction ................................................................................................................................ 3 Materials & Methods.................................................................................................................. 6 Plants and insects ................................................................................................................... 6 Experimental setup................................................................................................................. 7 Statistical analysis .................................................................................................................. 7 Results........................................................................................................................................ 8 Spectral reflectance curves..................................................................................................... 8 Between-patch analyses ....................................................................................................... 10 Within-patch analyses .......................................................................................................... 13 Discussion ................................................................................................................................ 15 Between-patch