Legedatum und Gelegegröße der Kohlmeise(Parus major) in mediterranen Gebieten: Ein Vergleich zwischen vier verschiedenen Biotopen

Beldal, Eduardo J.; Barba, Emilio; Gil‐Delgado, José A.; Iglesias, Domingo J.; López, Germán; Monrós, Juan S.

doi:10.1007/bf01653337

Cited by 31 publications

(25 citation statements)

References 24 publications

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“…Males are presumably balancing the costs of investing in gonadal growth during a time of year when temperature and food abundance are relatively low, with the benefits of having viable sperm as soon as females become receptive. Since nest initiation typically occurs later at higher elevations relative to lower ones (Johnston 1954;Sanz 1997;Belda et al 1998;Widmer and Biebach 2001), males in the mountains probably benefit by delaying investment in reproductive development longer than males on the coast. Age (Dawson 2003), condition (Evans and Goldsmith 2000) and female behavior (reviewed in Wingfield and Marler 1988) have all been shown to influence reproductive development in males.…”

Section: Discussionmentioning

confidence: 96%

“…In near-equatorial environments where photoperiod changes very little during the year, birds can use day length to time seasonal reproduction, but other cues closely tied to wet/dry seasons better explain inter-year variation in reproductive cycles (Hypophylax n. naevioides: Hau et al 1998Hau et al , 2000Wikelski et al 2000). Furthermore, along wide altitudinal gradients at the same latitude where differences in photoperiodic cues are slight, conspecifics tend to delay reproduction with increasing altitude (Johnston 1954;Sanz 1997;Belda et al 1998;Widmer and Biebach 2001). Therefore, localized cues like temperature, rainfall and food availability (called supplementary cues) can accelerate or decelerate an individual's seasonal reproductive development.…”

Section: Introductionmentioning

confidence: 95%

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Reproductive development according to elevation in a seasonally breeding male songbird

et al. 2004

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Seasonal temperate zone breeders respond to increasing day length to anticipate the approach of spring breeding conditions. Other (supplementary) environmental cues, such as temperature and precipitation, were historically thought to play unimportant roles in reproductive timing. We demonstrate variation in reproductive timing across small geographic distances by examining the vernal testicular recrudescence of adult song sparrows (Melospiza melodia morphna) breeding in coastal (0-10 m elevation) and montane (280-1220 m elevation) habitats. Each year, these birds experienced the same photoperiod, but were exposed to different supplementary cues that varied with altitude. Coastal birds experienced warmer and more stable temperatures during late winter and early spring than did montane birds. We measured bud opening, emergence of new green shoots, and arthropod biomass to monitor the pace of spring's approach. New spring shoots emerged 2 months earlier on the coast than in the mountains and buds on flowering trees and shrubs also tended to open earlier at the coast. Arthropod biomass was similar in both the mountains and the coast during early spring, and began to increase in early summer. Reproductive morphology (i.e. testis volume and cloacal protuberance length) developed up to 2 months earlier on the coast than in the mountains. Testicular recrudescence occurred earlier on the coast in most years and proceeded at a faster rate in 1 year. Circulating levels of luteinizing hormone, follicle stimulating hormone and prolactin increased through the season, but did not correlate with differences between sites. Both populations responded similarly when exposed to identical photoperiodic cues in the laboratory. Therefore, we suggest that an integrated response to cues characteristic of location and elevation account for differences in patterns measured in the field.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 95%

Reproductive development according to elevation in a seasonally breeding male songbird

et al. 2004

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“…Barba 1992, Barba et al . 1995, Belda et al . 1998), as well as recent analyses of geographical trends in breeding traits (Sanz 1998), allows a reconsideration of the above explanations.…”

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confidence: 99%

Geographical variation in egg size of the Great Tit Parus major: a new perspective

Encabo

Barba

Gil‐Delgado

et al. 2002

Ibis

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A recent study on geographical variation in egg size of Great Tits Parus major concluded that: (1) mean egg size tended to increase with increasing latitude; and (2) mean egg size was positively correlated with mean clutch size. Including new data on both egg and clutch size, we reanalysed the relationships between egg size, clutch size and latitude, and investigated the possible effects of habitat type, female body size and egg shape on these relationships. We found that (1) egg volume showed minimum values around 51°N, increasing both north and southwards; (2) female body size increased linearly with increasing latitude; (3) female body size was positively correlated with egg breadth, but not with egg length or egg volume; (4) the sphericity index of the eggs (breadth to length ratio) was largest at medium latitudes, and eggs were more elongated towards the north and the south; (5) the relationship between clutch size and latitude was curvilinear, with the largest clutch sizes at intermediate latitudes; (6) egg size was not correlated with clutch size when the complete latitudinal range was considered, but egg size was negatively correlated with clutch size between 40 and 51°N; and (7) egg size did not differ among habitat types. We suggest that female body size (which probably limits egg breadth), and the pressure for producing large eggs (which in turn increases the reproductive success) are the main determinants of geographical variation in egg size and shape. Populations of small‐bodied Great Tits seem to escape from the limits of their size, producing relatively elongated eggs, so that from a certain latitude southwards, egg volume does not decrease in spite of a decrease in female body size. Moreover, the negative relationship between egg and clutch size at low latitudes suggests that energetic trade‐offs may also contribute to determine egg size in the south.

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“…This lack of difference may be caused by similar food phenology (Belda et al 1998). Perrins (1991) has suggested that the laying dates of great tits are related to the appearance of caterpillars in their habitat.…”

Section: Discussionmentioning

confidence: 99%

“…They inhabit almost any habitat type, such as pure coniferous forest, deciduous or evergreen broadleaved forest, urban parks, and gardens with poor vegetation (Cramp and Perrins 1993;Belda et al 1998). In South Korea, the most common birds using artificial nest boxes are tits, e.g.…”

Section: Introductionmentioning

confidence: 99%

Breeding ecology of tits using artificial nest boxes in coniferous and deciduous forests in Mt. Namsan, Seoul Metropolitan, Korea

Rhim

Son

Kim

et al. 2013

Forest Science and Technology

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This study was conducted to elucidate the breeding ecology of tits in artificial nest boxes in both deciduous and coniferous forests located in Mt. Namsan, Seoul Metropolitan, Korea, from March to June 2012. Great tit Parus major and varied tit P. varius both used the artificial nest boxes in the coniferous forest, but only the great tit used the artificial nest boxes in the deciduous forest for breeding. There were 27 artificial nest boxes in the coniferous forest and 17 in the deciduous forest. The rate of breeding success was 6.7-26.7% for both study sites. The clutch size of varied tits was less than that of great tits. Brood size, incubation period and nestling care period were the same for great and varied tits in the coniferous forest. There were no differences related to forest type for number of breeding pairs, breeding behaviors, egg measurements, and results of hatching, fledgling and breeding for great tits bred in artificial nest boxes. Long-term ecological research on food availability and breeding success of tits is needed for the conservation of these birds and their habitats.

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Legedatum und Gelegegröße der Kohlmeise(Parus major) in mediterranen Gebieten: Ein Vergleich zwischen vier verschiedenen Biotopen

Cited by 31 publications

References 24 publications

Reproductive development according to elevation in a seasonally breeding male songbird

Reproductive development according to elevation in a seasonally breeding male songbird

Geographical variation in egg size of the Great Tit Parus major: a new perspective

Breeding ecology of tits using artificial nest boxes in coniferous and deciduous forests in Mt. Namsan, Seoul Metropolitan, Korea

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