573 search hits
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Los ciempiés escutigeromorfos (Scutigeromorpha), escolopendromorfos (Scolopendromorpha) y geofilomorfos (Geophilomorpha) de la selva tropical caducifolia de la reserva de Chamela, Jalisco, México
(2012)
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Fabio Germán Cupul-Magaña
- La Reserva de la Biosfera de Chamela-Cuixmala se localiza en la costa del Pacífico del estado mexicano
de Jalisco. La Reserva fue fundada en 1993 y se extiende por 13142 hectáreas. Es una de las pocas reservas en México
creada para la protección de la selva tropical caducifolia (seca) y sistemas asociados. Cinco especies de ciempiés han
sido registradas previamente para la Reserva: Cormocephalus impressus Porat, 1876; Dendrothereua linceci (Wood,
1867); Ectonocryptoides quadrimeropus Shelley y Mercurio, 2005; Scolopendra polymorpha (Wood, 1861) y
Scolopendra viridis Say, 1821. A partir de julio de 2010 se inició con el primer estudio formal de la fauna de ciempiés
en la Reserva. Después de un año de muestreos, ocho morfoespecies de ciempiés se han determinado para la Reserva:
Cryptops (Haplocryptops) cf. acapulcensis Verhoeff, 1934; Cryptops sp.; Rhysida immarginata (Porat, 1876);
Scolopendra morsitans Linnaeus, 1758; Polycricus sp.; Sogona sp.; Orphnaeus sp.; y Straberax sp. Esta es la primera
vez que Cryptops (Haplocryptops) cf. acapulcensis es encontrada en otra localidad distinta de su localidad tipo.
Estudios previos han determinado el papel de los ciempiés como parte de la dieta de mamíferos y componente de la
fauna del suelo.
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Changes in the fledging success over time with increasing population size in the Northern Lapwing Vanellus vanellus on Wangerooge Island (Lower Saxony, Germany)
(2006)
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Julia Schröder
Mathias Heckroth
Thomas Clemens
- In this study, we report the results of a long-term investigation on changes in population size and fledging
success of Northern Lapwing on Wangerooge, a German Wadden Sea island. This population is increasing over a period
of 34 years in contrast to numerous populations in North-western Europe. The reproductive success however declines
over time and also with population density. Both effects cannot be considered separately due to autocorrelation.
However, it is noted that the population on Wangerooge is not sustained by local recruitment only. This outcome is
even more alarming as coastal areas and islands are considered as rare high quality meadow bird habitats. According
to the present results Wangerooge cannot be considered as a source habitat for Northern Lapwings in North-western
Germany.
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Breeding success of Black-tailed Godwits Limosa limosa under ‘mosaic management’, an experimental agrienvironment scheme in The Netherlands
(2006)
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Hans Schekkerman
Wolf Teunissen
Ernst Oosterveld
- Black-tailed Godwits (Limosa limosa) have been declining for decades in The Netherlands and so far this has
not been slowed by conservation measures. A new form of agri-environment scheme was tried out in 2003-2005 at 6
sites where a ‘grassland mosaic’ (200-300 ha) was created by collectives of farmers through a diverse use of fields including
postponed and staggered mowing, (early) grazing, creating ‘refuge strips’ during mowing, and active nest protection.
We measured breeding success of godwits in each of the experimental sites and nearby, paired controls. Breeding
success was higher (0.28 chicks fledged /pair) in mosaics than in controls, but due to lower agricultural nest losses only.
Chick survival was 11 % in both mosaics and controls. The amount of late-mown and other grassland suitable for chicks
hardly differed between treatments during the fledging period, mainly due to rainfall delaying postponed mowing in
all sites. Chick survival was however positively correlated with site variation in the amount of high grass (>18 cm).
Breeding success was high enough to compensate for adult mortality (ca. 0.6) in only one mosaic site. Chick survival
was lower than in previous Godwit studies, indicating that additional loss factors have increased. Predation (50-80 % of
chicks, mostly by birds) is a candidate, but changes in the suitability of late-mown grassland (insect abundance and
sward density in grass monocultures) may also play a role. Consequently a higher management investment is needed
to achieve a self-sustaining population.
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The importance of early breeding in Black-tailed Godwits (Limosa limosa)
(2006)
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Julia Schröder
Jos Hooijmeijer
Christiaan Both
Theunis Piersma
- Human impacts on the landscape have increased the penalties for Black-tailed Godwits laying their eggs
too late, especially in the very intensive agricultural landscapes of The Netherlands. Thus, godwits have experienced a
dramatic change of their fitness landscape, because the advance in mowing date made late clutches worthless destroying
either eggs or chicks. To determine the driving forces of the recent population decline we study the individual
variation in timing of breeding with respect to reproductive success in a population unaffected by mowing. Our results
show that even in a low intensity agricultural area it is very important for godwits to breed early in the season.
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Chalcosicya maya n. sp, a new Mexican species (Coleoptera: Chrysomelidae: Eumoplinae) and its implications for morphology and biogeography
(2012)
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R. Wills Flowers
- Chalcosicya maya, new species, (Coleoptera: Chrysomelidae: Eumolpinae) is described and the species
key of Blake (1951) is modified to accommodate it. This is the first known mainland species of this previously
Antillean genus. Sclerotized rods in the apical segment of the ovipositor of Chalcosicya Blake and related genera
are shown to be useful systematic characters within the eumolpine tribe Adoxini. Relationships with other genera
suggest that Chalcosicya belongs to a clade derived from ancestors with a western Tethyian distribution.
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Recognition of Chyrsobothris thoracica guadeloupensis Descarpentries, 1981 at the species level (Coleoptera: Buprestidae)
(2012)
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Norman E. Woddley
Julien Touroult
- Evidence is presented that the subspecies Chrysobothris thoracica guadeloupensis Descarpentries, 1981
(Coleoptera: Buprestidae) should be recognized at the species level. Character evidence is provided to separate C.
guadeloupensis, new status, from C. thoracica Fabricius, 1798. Both species are illustrated with habitus photographs
and images of the male genitalia.
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Ein Nachweis von Corispermum filifolium (Chenopodiaceae) aus Deutschland
(2010)
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Alexander P. Sukhorukov
- Ein schon im 19. Jahrhundert richtig bestimmter Beleg von Corispermum filifolium aus Darmstadt wird bestätigt. Dies stellt den ersten Nachweis der Art in Mitteleuropa dar. Auf Unterschiede zu C. leptopterum wird hingewiesen.
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New records of biting midges of the genus Culicoides Latreille from Mexico (Diptera: Ceratopogonidae)
(2012)
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Herón Huerta
M. Rodríguez Castrejón
William L Grogan Jr.
Sergio Ibánez-Bernal
- We provide the first records of six species of biting midges (Diptera: Ceratopogonidae) in the genus
Culicoides Latreille from Mexico: C. baueri Hoffman, C. castillae Fox, C. debilipalpis Lutz, C. iriartei Fox, C. leoni
Barbosa and C. pusilloides Wirth and Blanton. In addition, C. leopoldoi Ortiz is confirmed from Mexico, and new
records are included for 25 other species previously recorded in Mexico: C. arubae Fox and Hoffman, C. blantoni Vargas
and Wirth, C. crepuscularis Malloch, C. daedalus Macfie, C. diabolicus Hoffman, C. foxi Ortiz, C. furens (Poey), C.
gabaldoni Ortiz, C. haematopotus Malloch, C. hylas Macfie, C. insignis Lutz, C. jamaicensis Edwards, C. luteovenus
Root and Hoffman, C. neopulicaris Wirth, C. nigrigenus Wirth and Blanton, C. pampoikilus Macfie, C. panamensis
Barbosa, C. paraensis (Goeldi), C. phlebotomus (Williston), C. poikilonotus Macfie, C. pusillus Lutz, C. stigmalis Wirth,
and all three species in the C. (Monoculicoides) variipennis complex, C. variipennis (Coquillett), C. occidentalis Wirth
and Jones, and C. sonorensis Wirth and Jones.
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A summary of the endemic beetle genera of the West Indies (Insecta: Coleoptera); bioindicators of the evolutionary richness of this Neotropical archipelago
(2012)
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Stewart B. Peck
Daniel E. Perez-Gelabert
- The Caribbean Islands (or the West Indies) are recognized as one of the leading global biodiversity hot
spots. This is based on data on species, genus, and family diversity for vascular plants and non-marine vertebrates. This
paper presents data on genus level endemicity for the most speciose (but less well publicised) group of terrestrial
animals: the beetles, with 205 genera (in 25 families) now recognized as being endemic (restricted) to the West Indies.
The predominant families with endemic genera are Cerambycidae (41), Chrysomelidae (28), Curculionidae (26), and
Staphylinidae (25). This high level of beetle generic endemicity can be extrapolated to suggest that a total of about
700 genera of all insects could be endemic to the West Indies. This far surpasses the total of 269 endemic genera of all
plants and non-marine vertebrates, and reinforces the biodiversity richness of the insect fauna of the West Indies.
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A new species of Chrysina Kirby (Coleoptera: Scarabaeidae: Rutelinae) from Oaxaca, Mexico
(2012)
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José Monzón Sierra
- Chrysina arellanoi new species (Coleoptera: Scarabaeidae: Rutelinae) is described from the southernmost
part of the Sierra Madre del Sur in Oaxaca, Mexico
