scholarly journals Details of Eastern Coyote, Canis latrans, Predation on Great Black-backed Gull, Larus marinus, Eggs on Boot Island National Wildlife Area, Nova Scotia

2007 ◽  
Vol 121 (4) ◽  
pp. 426
Author(s):  
Colin M. MacKinnon ◽  
Andrew C. Kennedy ◽  
Donald W. Colpitts
Keyword(s):  
Nova Scotia ◽  
Canis Latrans ◽  
Field Observations ◽  
Photographic Evidence ◽  
Egg Shells ◽  
Larus Marinus ◽  
First Time

We detail field observations of Eastern Coyote eating Great Black-backed Gull eggs for the first time in the literature. Photographic evidence of the remaining egg shells allowed us to identify the Coyote as the predator.

CHAETOCNEMA CONCINNA (MARSHAM, 1802), A EUROPEAN FLEA BEETLE INTRODUCED IN NORTH AMERICA (COLEOPTERA: CHRYSOMELIDAE: ALTICINAE)

1990 ◽  
Vol 122 (4) ◽  
pp. 647-650
Author(s):  
Laurent Lesage
Keyword(s):  
Nova Scotia ◽  
North America ◽  
Prince Edward Island ◽  
Host Plants ◽  
Flea Beetle ◽  
Collection Data ◽  
First Time

AbstractChaetocnema concinna (Marsham, 1802), a European flea beetle, is reported for the first time from Canada. Preliminary collection data indicate that it may feed on the same host plants as in Europe. It has been collected to date in Prince Edward Island, Nova Scotia, and Maine.

scholarly journals Mass bleaching of soft coral, Sarcophyton spp. in Thailand and the role of temperature and salinity stress

2009 ◽  
Vol 66 (7) ◽  
pp. 1515-1519 ◽  
Author(s):  
Suchana Chavanich ◽  
Voranop Viyakarn ◽  
Thepsuda Loyjiw ◽  
Priyapat Pattaratamrong ◽  
Anchalee Chankong
Keyword(s):  
Salinity Stress ◽  
Soft Coral ◽  
Elevated Temperatures ◽  
Gulf Of Thailand ◽  
Field Observations ◽  
Experimental Trial ◽  
First Time ◽  
Upper Gulf Of Thailand ◽  
Mass Bleaching

Abstract Chavanich, S., Viyakarn, V., Loyjiw, T., Pattaratamrong, P., and Chankong, A. 2009. Mass bleaching of soft coral, Sarcophyton spp. in Thailand and the role of temperature and salinity stress. – ICES Journal of Marine Science, 66: 1515–1519. From June to October 2006 and 2007, mass bleaching of the soft coral, Sarcophyton spp., occurred for the first time in the upper Gulf of Thailand. Approximately 90% of the populations experienced extensive bleaching, and almost 95% of colonies were affected. Field observations also revealed that fragmentation of Sarcophyton spp. set in 1 month after the onset of bleaching. Some colonies started to recover to some extent by the end of July, with 95% of the population of Sarcophyton spp. recovering by October. Both acute and chronic trials were conducted to determine whether temperature and/or salinity triggered bleaching. In the acute tests, Sarcophyton spp. at 40°C and salinity 20 psu were completely bleached, and death occurred after 57 and 204 h, respectively. However, the colonies at 40 psu could survive through the experimental trial. In the chronic tests, Sarcophyton spp. died when exposed to 34°C, whereas complete bleaching and mortality of Sarcophyton spp. occurred at salinities of 10 and 49 psu. We conclude that elevated temperatures had a greater effect on the bleaching of Sarcophyton spp. than did salinity.

scholarly journals Planetary Cinema

2021 ◽  
Author(s):  
Tiago Luca
Keyword(s):  
Media History ◽  
Media Culture ◽  
Late Nineteenth Century ◽  
Film Culture ◽  
Combined Approach ◽  
The Earth ◽  
Photographic Evidence ◽  
The Media ◽  
The Impact ◽  
First Time

The story is now familiar. In the late 1960s humanity finally saw photographic evidence of the Earth in space for the first time. According to this narrative, the impact of such images in the consolidation of a planetary consciousness is yet to be matched. This book tells a different story. It argues that this narrative has failed to account for the vertiginous global imagination underpinning the media and film culture of the late nineteenth century and beyond. Panoramas, giant globes, world exhibitions, photography and stereography: all promoted and hinged on the idea of a world made whole and newly visible. When it emerged, cinema did not simply contribute to this effervescent globalism so much as become its most significant and enduring manifestation. Planetary Cinema proposes that an exploration of that media culture can help us understand contemporary planetary imaginaries in times of environmental collapse. Engaging with a variety of media, genres and texts, the book sits at the intersection of film/media history and theory/philosophy, and it claims that we need this combined approach and expansive textual focus in order to understand the way we see the world.

scholarly journals Softening and instability of natural slopes in highly fissured plastic clay shales

2006 ◽  
Vol 6 (4) ◽  
pp. 529-539 ◽  
Author(s):  
L. Picarelli ◽  
G. Urciuoli ◽  
A. Mandolini ◽  
M. Ramondini
Keyword(s):  
Laboratory Data ◽  
Field Observations ◽  
Plastic Clay ◽  
Clay Shales ◽  
Italian Apennines ◽  
First Time ◽  
Natural Slopes

Abstract. Softening is often considered to be the main cause of first-time slides in OC clay, but so far the mechanics of softening has not been satisfactorily explained. Bearing on laboratory data and field observations about landslides in tectonized highly plastic clay shales of Italian Apennines, the paper describes a process of soil weakening that could explain some failures of natural slopes.

Parasitism and phenology of Dasineura mali (Diptera: Cecidomyiidae) in Canadian apple (Rosaceae) orchards

2020 ◽  
Vol 152 (3) ◽  
pp. 355-373
Author(s):  
J.E. Cossentine ◽  
A.M. Brauner ◽  
J.L. Franklin ◽  
M.C. Robertson ◽  
P.N. Buhl ◽  
...  
Keyword(s):  
British Columbia ◽  
Nova Scotia ◽  
Molecular Analysis ◽  
Malus Domestica ◽  
Pheromone Trap ◽  
The Third ◽  
Alien Pest ◽  
First Time ◽  
Fraser Valley ◽  
Dasineura Mali

AbstractThe apple leaf midge, Dasineura mali (Kieffer) (Diptera: Cecidomyiidae), an invasive alien pest established for many years in Nova Scotia, Canada, has invaded Ontario and British Columbia, Canada apple (Malus domestica Borkhausen; Rosaceae) orchards, damaging growing tips of trees. Molecular analysis indicated that Nova Scotia populations are genetically different from Ontario and British Columbia populations. Pheromone trap captures, oviposition on growing apple terminals, and the incidence of third instars indicate three D. mali generations in each province. Platygaster demades Walker (Hymenoptera: Platygastridae), released in Nova Scotia in 1993, parasitised 34% of the third midge generation in that province and was reared from D. mali for the first time in 2016 in the Fraser Valley of British Columbia. Lyrcus nigroaeneus Ashmead (Hymenoptera: Pteromalidae) parasitised up to 21% of D. mali in southwestern Ontario. Synopeas myles (Walker) (Hymenoptera: Platygastridae) was recorded from D. mali for the first time, one specimen in each of Nova Scotia and Ontario, and was the most important parasitoid in British Columbia. Synopeas myles parasitism in Okanagan and Similkameen, British Columbia orchards increased from 0% to a mean of 30% of D. mali larvae from 2014 to 2016. Other minor parasitoids included Platygaster tuberosula Kieffer (Hymenoptera: Platygasteridae) in all three provinces and Aphanogmus vicinus Förster (Hymenoptera: Ceraphronidae) in British Columbia.

Description of the pupa and observations on the distribution, ecology, and life history of Quedius spelaeus spelaeus Horn (Coleoptera: Staphylinidae) in Nova Scotia, Canada

Zootaxa ◽  
2006 ◽  
Vol 1226 (1) ◽  
pp. 61 ◽  
Author(s):  
MAX MOSELEY ◽  
JAN KLIMASZEWSKI ◽  
CHRISTOPHER G. MAJKA
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Glacial Refugia ◽  
Disjunct Distribution ◽  
Late Instar ◽  
History Of ◽  
First Time

The troglophilic staphylinid beetle Quedius spelaeus spelaeus Horn 1871, has been found in a number of porcupine dung caves in Nova Scotia where it appears to be the dominant predator on other invertebrates. In culture, late-instar larvae were observed to excavate and remain in cavities excavated in dung, and to pupate in these cavities. The pupa is described for the first time and compared with other pupae in the genus Quedius Stephens. The apparently disjunct distribution of the species in Nova Scotia is discussed and it is suggested that it may have colonized the province from Atlantic glacial refugia.

Lacconotus punctatus and the family Mycteridae (Coleoptera) newly recorded in Atlantic Canada

2006 ◽  
Vol 138 (5) ◽  
pp. 636-637 ◽  
Author(s):  
Christopher G. Majka ◽  
Gary Selig
Keyword(s):  
Nova Scotia ◽  
First Record ◽  
Saproxylic Beetles ◽  
Atlantic Canada ◽  
The Family ◽  
First Time ◽  
Developing Knowledge

AbstractLacconotus punctatus LeConte is reported for the first time from Atlantic Canada from a specimen collected in Bridgewater, Nova Scotia. This is the first record of the family Mycteridae in the region. The bionomics and systematics of the species are briefly discussed. The report is also situated in the context of the developing knowledge of saproxylic beetles in the region.

A synopsis of Actenosigynes Moure, Graf & Urban, 1999 (Hymenoptera: Colletidae)—new species, possible oligolecty and biogeographic comments

Zootaxa ◽  
2009 ◽  
Vol 2292 (1) ◽  
pp. 15-24 ◽  
Author(s):  
FERNANDO A. SILVEIRA
Keyword(s):  
New Species ◽  
Type Species ◽  
Disjunct Distribution ◽  
Mountain Range ◽  
New Taxon ◽  
Field Observations ◽  
Light Yellow ◽  
Speciation Event ◽  
Identification Analysis ◽  
First Time

A second species of Actenosigynes from the Mantiqueira mountain range, in the southeastern Brazilian state of Minas Gerais, is described. This new taxon can be readily distinguished from the type species of the genus, A. fulvoniger (Michener, 1989), by its entirely black-pubescent mesosoma and by the light-yellow pilosity on its terga, among other characters. Females of the two known species are illustrated for the first time and a key is presented for their identification. Analysis of the pollen extracted from the scopa of the holotype of the new species and field observations of A. fulvoniger indicate that both species of Actenosigynes are oligolectic on flowers of Loasaceae as pollen sources. This presumed couple of sister species is the first example of a speciation event related to the isolation of populations of temperate and subtropical bee species on the top of southeastern-Brazilian mountains. It suggests that complexes of sibling species may exist among the other bee species with similar disjunct distribution.

Predation on feather stars by regular echinoids as evidenced by laboratory and field observations and its paleobiological implications

Paleobiology ◽  
2017 ◽  
Vol 43 (2) ◽  
pp. 274-285 ◽  
Author(s):  
Angela Stevenson ◽  
Forest J. Gahn ◽  
Tomasz K. Baumiller ◽  
George D. Sevastopulo
Keyword(s):  
Field Observations ◽  
Gut Content ◽  
Bathymetric Range ◽  
Photographic Evidence ◽  
Content Analyses ◽  
Reef Environments ◽  
Large Populations ◽  
Stalked Crinoids ◽  
Feather Star ◽  
Feather Stars

AbstractAmong extant crinoids, the feather stars are the most diverse and occupy the greatest bathymetric range, being especially common in reef environments. Feather stars possess a variety of morphological, behavioral and physiological traits that have been hypothesized to be critical to their success, especially in their ability to cope with predation. However, knowledge of their predators is exceptionally scant, consisting primarily of circumstantial evidence of attacks by fishes. In this study the question whether regular echinoids, recently shown to consume stalked crinoids, also consume feather stars is explored. Aquarium observations indicate that regular echinoids find feather stars palatable, including feather stars known to be distasteful to fish, and that regular echinoids can capture and eat live feather stars, including those known to swim. Gut-content analyses of the echinoidAraeosoma fenestratum(Thomson, 1872), which is commonly observed with large populations of the feather starKoehlermetra porrecta(Carpenter, 1888) in video transects from marine canyons off the coast of France, revealed elements of feather stars in the guts of 6 of 13 individuals. The high proportion of crinoid material (up to 90%), and the presence of articulated crinoid skeletal elements in the gut ofA. fenestratum, suggest that these echinoids consumed at least some live crinoids, although they may have also ingested some postmortem remains found in the sediment. Additionally, photographic evidence from the northeast Atlantic suggests that another regular echinoid,Cidaris cidaris(Linnaeus, 1758), preys on feather stars. Thus in spite of the broad suite of antipredatory adaptations, feather stars are today subject to predation by regular echinoids and may have been since the Mesozoic, when this group of crinoids first appeared.

scholarly journals ANNOTATED LIST OF THE MAMMALS OF NOVA SCOTIA

2004 ◽  
Vol 42 (2) ◽  
Author(s):  
Fred W. Scott ◽  
Andrew J. Hebda
Keyword(s):  
Nova Scotia ◽  
Canis Latrans ◽  
Procyon Lotor ◽  
Peromyscus Leucopus ◽  
Lynx Rufus ◽  
Mephitis Mephitis ◽  
Mammal Species ◽  
Glaucomys Volans ◽  
Terrestrial Mammals ◽  
Cape Breton

The latest taxonomic, distributional, habitat and conservation status information is presented for a total of 91 species of marine and terrestrial mammals presently or historically known from Nova Scotia. Four of them are extirpated and one is extinct. Of the 86 remaining species 51 are terrestrial (46 native, 5 introduced). The terrestrial mammals include 9 species of Insectivora, 6 (+ one tentative) of Chiroptera, one Primate, 12 Carnivora, 1 Perrissodactyla, 3 Artiodactyla, 19 Rodentia and 1 Lagomorpha. Native species include Boreal, Transition Zone and Austral elements, the result of Nova Scotia’s mid-latitude position on the continental coast.The 32 recorded marine species include 6 Carnivora (5 seals, walrus) and 26 Cetacea: Delphinidae (10 species), Phocoenidae (1), Monodontidae (1), Kogiidae (2), Physeteridae (1), Ziphiidae (4), Eschrichtiidae (1, extirpated), Balaenopteridae (5) and Balaenidae (1).Since 1971 four small mammal species (Sorex gaspensis, S. dispar, Glaucomys volans and Microtus chrotorrhinus) have been added to the provincial fauna, as a result of the first systematic and intensive sampling ever done in Nova Scotia. All are disjunct and three of them are restricted to forested talus habitats in the Cobequid Mts. or the Cape Breton Highlands. With the two disjunct species already known (Sorex arcticus maritimensis and Peromyscus leucopus caudatus), there are 6 disjunct mammals in the province, comprising 14.3 % of native non-volant terrestrial mammals, 33 % of insectivores and 18.8 % of native rodents. Two of them (Sorex gaspensis and Microtus chrotorrhinus) occur only on Cape Breton Island. No other area of similar size north of Mexico has a comparable proportion of disjunct mammals.Cape Breton Island historically has had a depauperate mammal fauna, lacking 8 species that were present on the adjacent mainland. The building of the connecting Canso Causeway in 1953-55 had a major zoogeographic impact, as it caused the western third of the strait to freeze over in winter and allowed the invasion and establishment of four large mammal species (Canis latrans, Procyon lotor, Mephitis mephitis and Lynx rufus).Le document présente l’information la plus récente sur la taxonomie, la répartition, l’habitat et la situation de 91 espèces de mammifères marins et terrestres qui vivent actuellement ou ont déjà vécu en Nouvelle-Écosse. Quatre d’entre elles ont disparu et une est éteinte. Sur les 86 autres espèces, 51 sont terrestres (46 espèces indigènes et 5 espèces introduites). Les mammifères terrestres comprennent 9 Insectivora, 6 (+ une espèce provisoire) Chiroptera, un Primate, 12 Carnivora, un Perrissodactyla, 3 Artiodactyla, 19 Rodentia et un Lagomorpha. La Nouvelle-Écosse étant située à une latitude moyenne sur la côte continentale, les espèces indigènes qui y vivent sont des éléments de la zone boréale, de la zone de transition et de la zone australe.Parmi les 32 espèces marines signalées, on compte 6 Carnivora important a (5 phoques et le morse) et 26 Cetacea: Delphinidae (10 espèces), Phocoenidae (1), Monodontidae (1), Kogiidae (2), Physeteridae (1), Ziphiidae (4), Eschrichtiidae (1, disparue), Balaenopteridae (5) et Balaenidae (1).Depuis 1971, à la suite du premier échantillonnage systématique et intensif mené en Nouvelle-Écosse, quatre espèces de petits mammifères (Sorex gaspensis, S. dispar, Glaucomys volans et Microtus chrotorrhinus) se sont ajoutées aux espèces fauniques de la province. Ce sont toutes des espèces disjointes, et trois d’entre elles sont confinées aux talus d’éboulis boisés des monts Cobequid ou des hautes-terres du Cap-Breton. Si on inclut les deux espèces disjointes déjà connues (Sorex arcticus maritimensis et Peromyscus leucopus caudatus), il existe 6 espèces disjointes de mammifères dans la province, qui représentent 14,3 % des mammifères terrestres indigènes qui ne volent pas, 33 % des Insectivores et 18,8 % des Rongeurs indigènes. Deux d’entre elles (Sorex gaspensis et Microtus chrotorrhinus) ne sont présentes que dans l’île du Cap-Breton. Au nord du Mexique, aucune autre région de taille semblable n’a une telle proportion d’espèces disjointes de mammifères.Dans le passé, l’île du Cap-Breton renfermait relativement peu de mammifères : on y trouvait 8 espèces de moins que dans la partie continentale de la Nouvelle-Écosse. La construction de la levée de Canso en 1953-1955 a eu un impact important zoogéographique du fait que, depuis, le tiers ouest du détroit gèle durant l’hiver, ce qui a permis à quatre espèces de gros mammifères (Canis latrans, Procyon lotor, Mephitis mephitis et Lynx rufus) de gagner l’île et de s’y établir.

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