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Einleitung: Ernährungsbiologische Untersuchungen dienen unter anderem dazu, die Position einzelner Tierarten in der jeweiligen Lebensgemeinschaft, der sie angehören, näher zu bestimmen. Dabei wird man sich nicht darauf beschränken können, die Nahrungsbestandteile in kleinen Serien zu ermitteln, denn die Zusammensetzung der Nahrung variiert entsprechend den Umweltbedingungen und dem physiologischen Zustand des Tieres. Die Variationsbreite des Nahrungsspektrums ist allerdings bei omnivoren Tieren, zu denen auch die Sperlinge zählen, verhaltnismäßig schwer zu erfassen, und es bedarf dazu einer grösseren Anzahl von Stichproben aus verschiedenen Populationen, die in unterschiedlichen Lebensräumen vorkommen. Noch schwieriger ist es, die Variationsursachen zu erkennen, denn dazu sind quantitative Untersuchungen über das Nahrungsangebot und seine Ausnutzung notwendig. Die Arbeiten in dieser Richtung sind in den letzten Jahren vor allem von L. Tinbergen und seinen Schülern, denen Vögel und Arthropoden als Forschungsobjekte dienten, entscheidend gefördert worden. Doch auch viele andere Forscher davor und danach befassten sich mit Nahrungsuntersuchungen an Vögeln und begründeten damit eine Sammlung von Faktenmaterial zur Problemstellungen, die zum Teil nur im Rahmen ökologischer Komplexaufgaben sinnvoll bearbeitet werden können. Im Internationalen Biologischen Programm bot sich eine Gelegenheit, die Ergebnisse vieler tausender Arbeitsstunden, die der Erforschung der Ernährung von Haus- und Feldsperling gewidmet waren, zusammenzufassen und einer allgemeinen Synthese zuzuführen. Auf Grund ihrer weiten Verbreitung und der hohen Dominanz, dle die Sperlinge stellenweise erreichen können, ist nicht nur ihre Bedeutung im Artengefüge (species network; Elton 1966) von Ökosystemen ziemlich hoch einzuschätzen, sondern es besteht auch ein begründetes volkswirtschaftliches Interesse an der Verringerung der von ihnen in der Landwirtschaft verursachten Schäden. Die im folgenden vorgetragenen Fakten und Vorstellungen sollen dazu beitragen, ein Modell zu finden, das die Rolle der Sperlinge in verschiedenen Ökosystemen zum Ausdruck bringt und uns dadurch befähigt, zweckmässigere Wege bei der Regulierung von Sperlingspopulationen einzuschlagen. Es kann jedoch nicht die Aufgabe dieser Abhandlung sein, die trophische Position der Sperlinge in verschiedenen Klima- und Vegetationsgsbieten erschöpfend zu analysieren und quantitativ zu vergleichen, da dies einen Gesamtüberblick über das produktionsbiologische Datenmaterial voraussetzt, der erst noch in Gemeinschaftsarbeit geschaffen werden muss.
L'Autore esamina le specie di Scafopodi del Neogene del Bacino del Mediterraneo, dandone un'ampia iconografia. Vengono riassunte varie notizie relative alle differenti specie ed in particolar modo viene proposta una rilettura filologicamente corretta delle diagnosi originarie. Due nuove specie sono istituite: Fustiaria (Fllstiaria) emersoni e Cadulus (Gadila) razzorei, dal Pliocene italiano. Anche le specie attuali mediterranee sono esaminate e correlate, ove occorra, alle forme fossili.
Nahrungsmittelallergikern steht aufgrund inakzeptabler Nebenwirkungen bei der spezifischen Immuntherapie zurzeit noch keine kausale Therapie dieser Erkrankung zur Verfügung. Demzufolge bleibt die Vermeidung der entsprechenden Lebensmittel für Nahrungsmittelallergiker der einzige Weg möglicherweise lebensbedrohlichen allergischen Reaktionen zu entgehen. Ziel dieser Arbeit war es, das Potential eines viralen Vektors für die Verwendung bei der spezifischen Immuntherapie der Lebensmittelallergie zu untersuchen. Die Überlegung dahinter war, das Risiko eines anaphylaktischen Schocks, der bei Injektion eines Allergens immer gegeben ist, durch intrazelluläre Expression des Proteins über das rekombinante Virus zu verringern. Zusätzlich dazu bringt das modifizierte Vacciniavirus Ankara (MVA) ideale Voraussetzungen für eine Allergievakzine mit: Die Infektion mit MVA führt zu einer stark Th1-gerichteten Immunantwort gegen die viral exprimierte Proteine, die möglicherweise die allergische Th2-gerichtete Immunantwort modulieren kann. Die prophylaktische Immunisierung mit MVA-OVA im Mausmodell der systemischen Sensibilisierung gegen Ovalbumin (OVA) führte dosisabhängig zur Suppression der spezifischen IgE-Antwort und somit zum Schutz vor allergischer Sensibilisierung. Zusätzlich konnte nachgewiesen werden, dass die Vakzinierung mit MVA-OVA eine dauerhafte spezifische IgG-Antwort induziert. Diese Daten unterstützen das Konzept einer Modulation der Sensibilisierung durch MVA-Vakzine. Weiterhin wurden zwei rekombinante Vakzinen generiert, mittels derer entweder das Tropomyosin aus Garnelen (Pen a 1) oder das Lipid-Transfer-Protein aus Haselnuss (Cor a 8) intrazellulär exprimiert werden konnte. Dass die Sensibilisierung gegen diese Allergene häufig mit schweren allergischen Reaktionen korreliert, unterstreicht die Notwendigkeit einer verbesserten Immuntherapie in diesem Bereich. Während MVA-Pen a 1 in ausreichender Menge und Qualität für die Verwendung im Mausmodell hergestellt werden konnte, gelang es nicht, eine homogene Population von MVA-Cor a 8 zu gewinnen, in der das Selektionsgen K1L nicht mehr vorhanden war. Parallel zur Virusherstellung wurden Mausmodelle der Sensibilisierung gegen Cor a 8 und Pen a 1 entwickelt. Vergleiche unterschiedlicher Mausstämme ergaben, dass sich Mäuse des Stammes CBA/J am empfänglichsten für eine systemische Sensibilisierung mit Cor a 8 sind. Aufgrund von Erfahrungen zur Sensibilisierung gegen Pen a 1 wurden Mäuse des Stammes C3H/HeJ bei der Etablierung eines Garnelenallergiemodells verwendet. Es zeigte sich, dass durch die intragastrale Applikation von 0,1 mg Pen a 1 sowie Choleratoxin als Adjuvanz (drei Gaben in dreiwöchigem Abstand), gefolgt von einer systemischen Gabe des Allergens mit Aluminiumhydroxid eine spezifische Sensibilisierung hervorgerufen werden konnte, die nach Exposition mit Pen a 1 zu allergischen Symptomen führte. Auch in diesem Modell bot die prophylaktische Immunisierung mit MVA-Pen a 1 Schutz vor Pen a 1spezifischer Sensibilisierung. Um die therapeutische Effektivität der Vakzine ermitteln zu können, muss die begonnene Etablierung eines Allergiemodells mit symptomauslösenden Provokationen und immunologischen Analysen weitergeführt werden. Der in dieser Studie beobachtete starke schützende Effekt einer Vakzinierung mit MVA vor allergischer Sensibilisierung und das sehr gute Sicherheitsprofil dieses Vektors in klinischen Studien zu anderen Erkrankungen belegt die Möglichkeit einer Verwendung von MVA zur erfolgreichen spezifischen Immuntherapie der Lebensmittelallergie.
Habitat, food and population dynamics of the field vole Microtus agrestis (L.) in south Sweden
(1971)
The habitat, food and population dynamics of the field vole (Microtus agrestis) were studied mainly in southernmost Sweden (Scania) with a few comparisons from a northern locality. The habitats of Microtus agrestis consist mainly of successional stages, arising from abandoned cultivated fields, drained mires and felled mature forests. They were characterized botanically and classified according to moisture and time since abandonment. Capture distributions were significantly clumped, being most contagious at the lowest densities. Microdistribution was affected more by shelter than by food conditions. The weight of the stomach contents showed various skewed distributions, giving indications of the feeding behaviour of various population categories. The staple food in southernmost Sweden was various grasses, while herbs, gnss seeds, vegetative storage organs and moss were primary food items during summer, summer-autumn, winter and early summer respectively. In a northern locality herbs played a more important role in summer. Among plant species e.g. Agrostis spp., Festuca rubra, Achillea millefolium and Ranunculus spp. were often eaten, while the common Deschampsia caesjJiiosa and Charnaenerion angustifoliurn were disliked. There were clear differences between habitats but plant species belonging to the same group replaced each other in the diet. There were few differences between populatipn categories. Experiments disclosed the same preferences as found at stomach analysis. Digestibility was higher during spring than winter, that of the preferred species being highest. The digestibility was most affected by the proportions of crude protein but the changes in weight by the amounts consumed. The animals showed a decided interest in certain carbohydrates and fatty substances with differences between seasons and years. The interest in sugars was not correlated with the similar interest in bark. The probability of capture was especially low in juveniles and during winter. Trap lines and grids showed the same trappability, but, the intervals between checkings influenced the removal rate. The density changes on two distant, large, dry fields in southernmost Sweden were correlated, while a nearby isolated population in a spruce plantation fluctuated out of phase. The increases during the reproductive season were significantly lower than those expected at exponential increase. The density in various habitats did not depend on the moisture conditions. Differences in population structure and body weight in various areas were partly related to the phase of population development. However, there were also differences in the same area between habitats, which might differ in plant nutrient supply. The animals had a low energy reserve in their depot fat, which would only sustain the animals for 5-14 hours in an emergency. It was highest during midwinter but with significant depressions in April and December. Drier habitats could sustain populations of little more than 200 animals/ha over :winter and these densities were not realized in southernmost Sweden. The spring-summer density variations in a northern locality were correlated with the spruce seed supply during the following autumn-winter. A relation was assumed with the quantity or quality of previous storage tissues. In southernmost Sweden, with irregular and low-amplitude fluctuations, there was no clear relation to primary production.
Arthropods inhabiting the sporophores of Fomes fomentarius (Polyporaceae) in Gatineau Park, Quebec
(1971)
The fauna of the sporophores of the perennial bracket fungus Fomes fomentarius (L. ex Fr.) Kickx were examined in a 3-year study. One species of molluscs and more than 152 species of arthropods excluding mites, representing 13 orders, 70 families, and 5400 individuals, emerged from or were found on or in, 1448 sporophores detached from dead birch trees; the sporophores were collected each year in Gatineau Park, Que., kept individually in screen-topped glass jars in a laboratory, and examined for several months. Mites, which were recorded quantitatively only in the final year, added 4 orders, 19 families, and 30 species to the preceding totals. Mites were the most frequently occurring and probably the most numerous arthropods, followed by Coleoptera, Psocoptera, Collembola, Hymenoptera, and Diptera. The key organisms of the fauna were five species of beetles that were primarily responsible for tunnelling and destruction of the sporophores and would therefore exert great influence on the composition of the community. Their tunnels provided shelter and food for many smaller arthropods or facilitated their feeding. Some beetle species tunnelled the sporophores for one season and others, for several, but many living sporophores and most dead ones tunnelled by beetles were tunnelled in the same season by more than one species of beetles. There was considerable latitude in types of sporophores inhabited by various arthropods but some species were particularly attracted to living or dead, to younger or older, and to smaller or larger, sporophores. Some species were also attracted to certain regions of the sporophore more than were other species. Possible economic implications of observations made in the study are discussed.
Application of vibrational spectroscopy to the problem of structure determination of molecules of biological interest goes back to the early uses of raman and infrared spectroscopy in the study of organic molecules. For reviews of earlier work the reader is referred to compilations by Kohlrausch (1943) and by Jones and Sandorfy (1956), whereas more recently a comprehensive discussion has been presented by Bellamy (1975). These compilations accentuate the correlation of vibrational spectra with molecular structure from an essentially empirical point of view and culminate in the establishment of empirical correlation charts. For typical examples the reader is referred to Weast (1974) and Bellamy (1975). There have been many treatments of the theoretical basis of molecular vibrational spectroscopy. Among them the classical work by Herzberg (1945) and by Wilson et al. (1955) should be mentioned. Applications of infrared spectroscopy (IR) to structure problems of biological interest have been summarized by Susi (1969), Fraser and MacRae (1973), and Wallach and Winzler (1974). It was remarked quite eraly that relevant structural information about biological systems often requires study in aqueous solution, which forms the natural environment for most biologically important systems. Besides critical control of experimental conditions and samples the conventional methods of raman spectroscopy may be applied to aqueous solutions in a quite straightforward manner, cf. the contribution by Lord and Mendelson, Chapter 8. The condition of biological environment, i.e., the study in aqueous solutions, by IR spectroscopy is difficult to achieve by conventional absorption technique, since the high absorption coefficient of water in wide regions of the mid and far infrared implies use of thin layers and high concentrations. As a consequence the application of special techniques for measurement of IR spectra of biological material has been a necessity in many cases. This contribution covers the following topics: (1) specific spectroscopic techniques used in this field, in particular for membrane spectroscopy, (2) discussion of typical results derived from application of IR techniques to model and natural membrane systems and to important constituent molecules of such systems.
Die Arbeit enthält Ergänzungen und Korrekturen zu Teil I der Revision, insbesondere einen revidierten Bestimmungsschlüssel für die in Europa vertretenen Gattungen und Bemerkungen zur Taxonomie und Verbreitung der Arten. Zusätzlich wird die Gattung Baryenemis Förster revidiert. Es werden eine Gattung (Gelanes spec. nov.; Typusart Thersylochus fusculus Holmgren) und 30 Arten neu beschrieben, sechs bisher als Gattungen ausgefaßte Taxa als Untergattungen eingeordnet und neun Arten neu synonymisiert.
El autor hace observaciones sobre diferentes formas de Enmolpidos sudamericanos. Agrega una lista provisoria de especies y variedades argentinas. Llama la atención sobre el hecho que los Eumolpidos son mal conocidos y sobre la necesidad de revisar el sistema de clasificacion de este grupo, en lo que se refiere a los géneros y tribus. Se enumeran 87 especies de Eumolpidos para la República Argentina, varias de ellas señaladas por primera vez en el país.
Hatching asynchrony and the onset of incubation in birds revisited : when is the critical period?
(1995)
1. Birds are unique among animals in being able to influence the birthing intervals of their young through the timing of the onset incubation. However, many species hatch their young asynchronously, frequently resulting in reduced survivorship for later-hatched young. This is the Paradox of Hatching Asynchrony. 2. The Brood Reduction Hypothesis provided a resolution to the paradox by suggesting an adaptive function to the offspring mortality that results from asynchrony. Experimental tests have provided little support, and 16 alternative hypotheses have been proposed, but few have been tested. Most experimental tests have not measured important parameters such as parental effort and postfledging survival. Many have lacked adequate controls or sufficient statistical power. 3. We divide the hypotheses for hatching asynchrony into four categories based on the effects of intrinsic or extrinsic factors during a critical period of the nesting cycle which constrains reproductive success. Hatching asynchrony could be simply the consequence of the early onset of incubation during egg-laying, either as a result of physiological constraints on incubation or because parents derive fitness benefits from the protective function of early incubation. During the nestling period, hatching asynchrony could be adaptive if it allowed parents to eliminate one or more nestlings selectively, or increased parental efficiency. Alternatively, parents could manipulate the duration of the different periods of the nesting cycle to maximize benefits. 4. Because the onset of incubation generally determines hatching patterns, we encourage refocusing attention from the search for adaptive hatching patterns during the nestling period to the events surrounding the onset of incubation during egg-laying. Many factors can affect when incubation is begun, including physiology, and interactions with the environment, predators, competitors, and mates. 5. Patterns of the onset of incubation are difficult to determine and to quantify, in part because many birds begin incubating gradually, or at night. In some species, the onset of incubation varies with clutch size, but not in others. 6. The onset of incubation is the principle proximate control of hatching patterns, but other factors, such as egg size, embryonic vocalizations, and time of year may also affect hatching patterns. 7. Synchronous hatching is the primitive condition in birds, and is widespread in the lower, primarily precocial taxa. Most altricial species hatch their eggs asynchronously, although some exhibit synchrony as a secondarily derived trait. Hatching patterns show wide variation within some orders and families. 8. Patterns of the onset of incubation and hatching in a species may reflect the influence of multiplefactors. The relative importance of those factors may depend on the trade-offs associated with the potential benefits of early incubation to the survival of eggs and the potential costs to the survivor of later-hatching young associatedwith nestling size hierarchies. 9. The relative effects of multiple factors can be examined by integrating the results of empirical tests of single factors through modeling. 10. We demonstrated the use of a stochastic model by using empirical data from the House Sparrow. Results revealed the trade-offs inherent in the onset of incubation from differences in egg viability and nestling survivorship. An intermediate onset of incubation produced the greatest fledging success. 11. Other factors may be integrated into such models if they can be measured in terms of their effects on fledging success. Different factors, represented by different hypotheses, vary in how readily they may be modeled.
Vengono descritti 2 nuovi sottogeneri di Agrilus: Lilliput (specie tipo: A. paracuspidatus Obenberger, 1939) e Agriphylus (specie tipo: A. maddalenae n. sp.). Vengono inoltre descritte 34 nuove specie e 4 nuove sottospecie di Agrilus (sensu lato) provenienti da diverse regioni del continente africano e dall' Arabia Saudita: A. (Paralophotus) sahelicus n. sp. del Marocco; A. (Diplolophotus) rastellii n. sp., A. (Paralophotus) rubescens n. sp., A. (Paralophotus) vo- 101 n. sp. del Senegal; A. (Lilliput) minimus n. sp., A. (Diplolopbotus) somalus n. sp., A. (Paralopbotus) myops n. sp. della Somalia; A. (Robertius) ocellatus n. sp. del Kenya; A. (Duftus) exoletus ugandensis n.ssp. dell'Uganda; A. (Pinarius) muehlei n. sp., A. (Robertius) provincialis n. sp., A. (Robertius) syndici n. sp., A. (Agrilus) wagneri n.sp. del Ruanda; A. (Pantberina) teocchii n. sp., A. (Robertius) delenilor celtivorus n. ssp., A. (Robertius) regius n. sp., A. (Roher/ius) ocularius n. sp., A. (Robertius) boanoi n. sp., A. (Robertius) mabokeamls n. sp.,A. Vlgrilus) parapupala n. sp.) A. (Agrilus) pupalinus n. sp., A. (Agrilus) hal'l7lodius centrafricanu.' n. ssp. della Repubblica Centrafricana; A. (Nigritius) leveyi n. sp., A. (Agrilus) 01- mii tropicus n. ssp. dello Zambia; A. (Agriphylus) maddalenac n. sp., Il. (Robertius) iniudicatus n. sp. della Sierra Leone; A. (Robertius) scutatus n. sp., Il. (Rohertius) rotundus n. sp. della Costa d'Avorio; A. (Robcrtius) zehra/us n. sp., Il. (Rohertius) subgravidus n. sp., A. (Agrilus) balena n. sp. del Camerun; Il. (Agripbylus) trico n. sp., A. (Pantherina) barbutulus n. sp., A. (Agrilus) salurnus 11. sp. dello Zaire; A. (Agrilus) olmii n. sp. del Mozambico; A. (Lilliput) lorscbbammcri n. sp. del Botswana e del Sud Africa.; A. (Robertius) bruschii n. sp. dei Sud Africa, Botswana e del Mozambico; A. (Bubagrilus) saudita n. sp. dell'Arabia Saudita. Sulla base dell\'esame del materiale tipico viene proposta infine una nuova sinonimia: A. schoutedeni Kerremans, 1913 (= A. rothkircbi Obenberger, 1923), nov. syn.
Fly larvae of the Anthomyiidae, Muscidae, Calliphoridae, and Sarcophagidae are scavengers and breed in filthy material such as animal dung, human feces, dead animals and decaying vegetables. Therefore, the presence of these larvae in our environment indicates defective sanitary conditions, and offers many problems from the standpoint of public health. Clinically, the larvae of some species cause myiasis in man and animals. On the other hand, in the field of legal medicine postmortem time of dead bodies is estimated in some cases by the species and age of larvae collected from them. Thus, the fly larvae are closely associated with our lives. Morphologic studies on larval stages of flies were started in the beginning of this century by Portchinsky (1910), Banks (1912), MacGregor (1914), and Keilin (1915 and 1917). Portchinsky first described chiefly the habits and metamorphosis, and later MacGregor emphasized structure of posterior spiracles in the identification of the larvae. Keilin (1917) discovered and emphasized the importance of the characteristic structures such as the cephalopharyngeal sclerite, anterior and posterior spiracles and other external and internal characters. Following them, many authors made comparative and systematic studies of fly larvae and there are many reports of such research. However, morphology, taxonomy and ecology of these fly larvae have not been studied systematically in Japan. During the period from 1915 to 1936, 10 or more accounts were made about fly larvae that caused intestinal myiasis in man. In 1937, Kodama and Yasuda reported Ophyra nigra Wied. asa cause of intestinal myiasis. Yasuda (1939) reported 12 species of fly larvae in Seoul, Korea with detailed drawings and descriptions. Lopes (1943 and 1946) reported sarcophagid larvae from Neotropical region. Hall (1947) described calliphorid larvae from North America in his publication "The blow flies of North America". In 1951, Roback used the characters of the larvae such as pharyngeal sclerites and posterior spiracles for the classification of the Calypterate, Diptera. In the same year, Zimin reported Russian muscoicllarvae in his publication "Fauna USSR, Muscidae" using the external characters such as spines, papillae, and anal plate on the body surface as well as anterior and posterior spiracles and cepahlopharyngeal sclerite. Fan (1957) reported some filth fly larvae from China. In Japan, Kana et a!. (1950-1958) described larvae of 39 species belonging to 4 families. In the present paper, the author describes 3rd stage larvae belonging to 70 species in 33 genera of 4 families. In addition, photographs of internal and external structures and keys to families and species of 3rd stage larvae are given. Moreover, 6 species belonging to Muscidae and 1 species ofSarcophagidae for which the larvae were not seen are cited from the descriptions and figures published by Keilin (1917), Zimin (1951), Kano and Sato (1951), and Fan (1957). Those species are also included in the keys of this paper.
Fauna of Isopoda and Tanaidacea in the coastal zones of the Antarctic and Subantarctic waters
(1968)
This work presents results of the processing of the material collected by the Soviet Antarctic Expedition (1955 - 1963), chiefly on the "Ob" and to a lesser extent by the geographer E. S. Korotkevich and the ichthyologist V. M. Makushek., during their wintering at the Mirnyi station, as well as by the hydrobiologist G. A. Solyanik on board the whalers "Slava" and "Ivan Nosenko."
Notes on some primates, Carnivora and the babirusa from the Indo-Malayan and Indo-Australian regions
(1949)
The Great Spotted Woodpecker is the most common and best-known woodpecker species in the W Palearctic. The sections Habitat, Distribution, Population, Movements, Food, Social pattern and behaviour, Voice, Breeding, Plumages, Bare parts, Moults, Measurements, Weights, and Geographical variation have been updated or completely rewritten, and a new section has been added on Conservation. High flexibility enables the Great Spotted Woodpecker to utilize a great variety of habitats, from Arctic taiga through boreal and temperate to Mediterranean (N Africa and Canary Islands) and Alpine forest zones, wherever there are mature trees of any sort with sufficient growth to accommodate nest-holes and with a supply of available food. The Distribution and Population sections include new data of population tendencies, with stable or positive trends in most European countries and fluctuating populations in N Europe. Recent negative range trends with small decreases only in S Europe, apparently due to loss of wooded habitats. The Conservation section presents literature on the Great Spotted Woodpecker as the key or umbrella species for secondary cavity-nesting species. This section also demonstrates the importance of woodpeckers as indicators for naturally dynamic forests with tree species diversity, forest management, and sustainable forestry. Woodpeckers can be part of a monitoring system of e.g. sustainable forestry, but species from other organism groups are also required. The section on Movements has been updated with new data on dispersal and summer/autumn and spring migration. The Great Spotted Woodpecker uses a very wide and varied diet and is characterized as a 'universalist' in food-gathering; pecking and hammering are most important in autumn and winter, gleaning and probing are important at times of high food availability at the tree surface in spring and summer. It takes arthropods and insect larvae, coniferous seeds and various nuts mainly in autumn and winter, and drills holes for sap-sucking in spring, takes surface dwelling arthropods and caterpillars, bird eggs and nestlings, and fruits and berries in spring and summer. The Social pattern and behaviour section presents new data on the mating system, parental effort, pair-bond, divorce rate, survival rate, and mortality. Great Spotted Woodpeckers are socially and genetically monogamous with a potential to polyandry, which was recorded in Japan. Changes of partner between seasons common. Males usually invest more in nesthole construction and guarding than the females and contribute the same amount or more to brood care. Males usually incubate and brood at night, as with all studied woodpeckers, and defend territories, which seem to be important for female choice. Females compete intensely for access to males and perform male-like courtship behaviours such as drumming. Great Spotted Woodpeckers are intelligent and currently doing damage to house facades. The Voice section presents mainly new data on calls and instrumental signals of the young. The Breeding section has been updated with new information about nest-sites, breeding behaviour, and breeding success. New data on age determination are shown in the Bare parts and Moults sections. Additional data are provided on size and weight.