scholarly journals The Big Naked-backed Bat, Pteronotus gymnonotus, Chiroptera, Mormoopidae, in its northernmost geographic distribution range

Therya ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 449-459
Author(s):  
Ricardo Lopez-Wilchis ◽  
Aline Méndez-Rodríguez ◽  
Javier Juste ◽  
Juan Luís García-Mudarra ◽  
Fernando Salgado-Mejia ◽  
...  

The Big Naked-backed Bat, Pteronotus gymnonotus, is one of the 15 species currently recognized of this genus, with relatively few specimens in scientific collections, besides being poorly studied.  It has a geographical distribution spanning from  México through Central America and reaching Perú and Brazil, in which it occupies a variety of habitats from desert to tropical forests below 400 meters above sea level.  Here, we report the records that demonstrate its presence, and data about its natural history in southeastern  México, the northernmost part of its geographic distribution range.  Between June 2002 and July 2018, we captured specimens in 44 bat roosts located in southeastern  México, including the Parque Estatal Agua Blanca, Macuspana, Tabasco; Grutas de Martínez de la Torre, Matías Romero Avendaño, Oaxaca; and in Cueva de Villa Luz, Tapijulapa, Tabasco.  In the three locations mentioned, we recorded the occurrence of P. gymnonotus individuals, whose taxonomic identification at species level was corroborated by both morphological data and genetic analyses.  Previously, the only records of P. gymnonotus in  México were from only four specimens scattered across time, so these new recorded locations confirm the presence of this species in the country.  In addition to this, in Agua Blanca State Park and Villa Luz Cave we found a reproductive resident population.  The record from Grutas de Martínez de la Torre is located in the middle of the Tehuantepec Isthmus, a well known biogeographical barrier for many taxa in the transitional area to the Pacific lowland’s region.  We suggest that the occurrence of P. gymnonotus in México is also associated with large remnants of evergreen and gallery forests, located in the lowland areas along the Gulf of  México and in the north and east of the Tehuantepec Isthmus.

Check List ◽  
2015 ◽  
Vol 11 (4) ◽  
pp. 1703
Author(s):  
Román Felipe Díaz-Ayala ◽  
Paul David Gutiérrez Cárdenas ◽  
Angelly Mariela Vásquez-Correa ◽  
Jóse Rances Caicedo-Portilla

Based on recent records, published data, and review of specimens deposited in scientific collections, we present an updated map of the geographic distribution of Diploglossus monotropis in Colombia. Our data show that this species has a wide geographical distribution, including the Pacific versant of the Cordillera Occidental, the inter-Andean valley of the Magdalena River, and the Caribbean lowlands of northern Colombia.


Zootaxa ◽  
2021 ◽  
Vol 4902 (1) ◽  
pp. 1-81
Author(s):  
MATHIAS HARZHAUSER

Evolutionary history, diversity and (paleo)geographic distribution of Cainozoic to present-day species of the Trochidae subfamilies Cantharidinae and Trochinae are discussed based on an extensive literature survey. In total, 393 species-level taxa, assigned to 24 genera and subgenera, are listed from the NE Atlantic, the E Atlantic, the North Sea, the (Proto)-Mediterranean Sea, the Central Paratethys Sea and the Eastern Paratethys Sea. Short diagnosis and subjective and objective junior synonyms for genus-level taxa are given. Stratigraphic ranges and geographic distribution are listed for species-level taxa.                The European fossil record suggests a first major radiation during the middle Eocene and a second diversity pulse during the Miocene, when most extant genera were already present. At the species level, however, the present-day fauna is geologically very young, originating during the Pleistocene and Holocene. Overall, no convincing correlation of evolution and diversity of European Cantharidinae and Trochinae with major geodynamic events (e.g. Tethys Closure) can be observed. An exception is the somewhat overlooked spectacular radiation of Cantharidinae following the hydrological isolation of the Paratethys Sea during the late Miocene. The critical evaluation of the fossil record provides anchor points to test molecular phylogenies. A major discrepancy between both approaches appears only for Jujubinus, which suggests that Paleocene species have to be excluded from the genus.                Gibbuliculus nov. gen. is introduced as new genus for a group of Oligocene to Pleistocene species, placed so far in “Colliculus” sensu auctores non Monterosato, 1888. Anceps siminescui nov. nom, Gibbuliculus saccoi nov. nom, Gibbula tavanii nov. nom., Gibbula s.l. lovellreevei nov. nom. and Gibbula s.l. steiningeri nov. nom. are proposed as new names for the preoccupied Trochus semistriatus Siminescu & Barbu, 1940, Gibbula protumida Sacco, 1896, Gibbula minima Tavani, 1939, Trochus (Gibbula) reevei Harmer, 1923 and Trochus amedei bicincta Schaffer, 1912. 


1997 ◽  
Vol 14 (2) ◽  
pp. 172-187
Author(s):  
Arif Sultan

Within a short span of time a number of economic blocs have emergedon the world horizon. In this race, all countriedeveloped, developingand underdeveloped-are included. Members of the North America FreeTrade Agreement (NAITA) and the European Economic Community(EEC) are primarily of the developed countries, while the EconomicCooperation Organization (ECO) and the Association of South EastAsian Nations (ASEAN) are of the developing and underdevelopedAsian countries.The developed countries are scrambling to create hegemonies throughthe General Agreement on Tariff and Trade (GATT). In these circumstances,economic cooperation among Muslim countries should be onthe top of their agenda.Muslim countries today constitute about one-third of the membershipof the United Nations. There are around 56 independentMuslim states with a population of around 800 million coveringabout 20 percent of the land area of the world. Stretchingbetween Atlantic and the Pacific Oceans, the Muslim Worldstraddles from North Africa to Indonesia, in two major Islamicblocs, they are concentrated in the heart of Africa to Indonesia,in two major blocs, they are concentrated in the heart of Africaand Asia and a smaller group in South and Southeast Asia.'GATT is a multilateral agreement on tariffs and trade establishing thecode of rules, regulations, and modalities regulating and operating internationaltrade. It also serves as a forum for discussions and negotiations ...


2018 ◽  
Vol 76 (3) ◽  
pp. 626-638 ◽  
Author(s):  
J Anthony Koslow ◽  
Pete Davison ◽  
Erica Ferrer ◽  
S Patricia A Jiménez Rosenberg ◽  
Gerardo Aceves-Medina ◽  
...  

Abstract Declining oxygen concentrations in the deep ocean, particularly in areas with pronounced oxygen minimum zones (OMZs), are a growing global concern related to global climate change. Its potential impacts on marine life remain poorly understood. A previous study suggested that the abundance of a diverse suite of mesopelagic fishes off southern California was closely linked to trends in midwater oxygen concentration. This study expands the spatial and temporal scale of that analysis to examine how mesopelagic fishes are responding to declining oxygen levels in the California Current (CC) off central, southern, and Baja California. Several warm-water mesopelagic species, apparently adapted to the shallower, more intense OMZ off Baja California, are shown to be increasing despite declining midwater oxygen concentrations and becoming increasingly dominant, initially off Baja California and subsequently in the CC region to the north. Their increased abundance is associated with warming near-surface ocean temperature, the warm phase of the Pacific Decadal oscillation and Multivariate El Niño-Southern Oscillation Index, and the increased flux of Pacific Equatorial Water into the southern CC.


1977 ◽  
Vol 8 (1) ◽  
pp. 128-148 ◽  
Author(s):  
Sylvia J. Hallam

Following several discussions in recent numbers of Quaternary Research on the peopling of the Americas, this paper suggests that movements into the New World should be viewed in the wider context of subsistence, technology, and movement around the western littorals of the Pacific, resulting in the colonization not of one but of two new continents by men out of Asia. Specific points which have been raised by these recent papers are reviewed in the light of Australian, Wallacian, and East Asian data.(1) The earliness of watercraft is evidenced by chronology of the human diaspora through Wallacia and Greater Australia.(2) The simplistic nomenclature of chopper-flake traditions masks considerable complexity and technological potential, revealed in detailed Antipodean studies.(3) These traditions also have great potential for adapting to differing ecological zones, evidenced within Greater Australia; and for technological and economic innovation there, through Southeast Asia, and to Japan and the north Asian littoral.(4) The history of discovery and the nature of the evidence from Australia cannot validly be used to controvert early dates in the Americas.(5) Demographic data from Australia suggest that total commitment to a rapid-spread “bowwave” model for the peopling of new continents may be unwise.


2021 ◽  
Vol 13 (5) ◽  
pp. 1013
Author(s):  
Kuo-Wei Yen ◽  
Chia-Hsiang Chen

Remote sensing (RS) technology, which can facilitate the sustainable management and development of fisheries, is easily accessible and exhibits high performance. It only requires the collection of sufficient information, establishment of databases and input of human and capital resources for analysis. However, many countries are unable to effectively ensure the sustainable development of marine fisheries due to technological limitations. The main challenge is the gap in the conditions for sustainable development between developed and developing countries. Therefore, this study applied the Web of Science database and geographic information systems to analyze the gaps in fisheries science in various countries over the past 10 years. Most studies have been conducted in the offshore marine areas of the northeastern United States of America. In addition, all research hotspots were located in the Northern Hemisphere, indicating a lack of relevant studies from the Southern Hemisphere. This study also found that research hotspots of satellite RS applications in fisheries were mainly conducted in (1) the northeastern sea area in the United States, (2) the high seas area of the North Atlantic Ocean, (3) the surrounding sea areas of France, Spain and Portugal, (4) the surrounding areas of the Indian Ocean and (5) the East China Sea, Yellow Sea and Bohai Bay sea areas to the north of Taiwan. A comparison of publications examining the three major oceans indicated that the Atlantic Ocean was the most extensively studied in terms of RS applications in fisheries, followed by the Indian Ocean, while the Pacific Ocean was less studied than the aforementioned two regions. In addition, all research hotspots were located in the Northern Hemisphere, indicating a lack of relevant studies from the Southern Hemisphere. The Atlantic Ocean and the Indian Ocean have been the subjects of many local in-depth studies; in the Pacific Ocean, the coastal areas have been abundantly investigated, while offshore local areas have only been sporadically addressed. Collaboration and partnership constitute an efficient approach for transferring skills and technology across countries. For the achievement of the sustainable development goals (SDGs) by 2030, research networks can be expanded to mitigate the research gaps and improve the sustainability of marine fisheries resources.


2021 ◽  
Vol 33 (2) ◽  
pp. 382-411
Author(s):  
Chris Madsen

Henry Eccles, in classic studies on logistics, describes the dynamics of strategic procurement in the supply chain stretching from home countries to military theatres of operations. Naval authorities and industrialists concerned with Japanese aggression before and after Pearl Harbor looked towards developing shipbuilding capacity on North America’s Pacific Coast. The region turned into a volume producer of merchant vessels, warships and auxiliaries destined for service in the Pacific and Indian Oceans. Shipbuilding involved four broad categories of companies in the United States and Canada that enabled the tremendous production effort.


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