Influence of breeding time, nest size, and egg size on the breeding success of the Common Moorhen Gallinula chloropus

Amininasab, Seyed Mehdi; Hosseini-Moosavi, Seyed Masoud; Xu, Charles C.Y.

doi:10.1016/j.actao.2021.103779

Cited by 3 publications

(4 citation statements)

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“…Although breeding time is known to be an important factor for breeding success, timing likely has a greater influence on food availability in terrestrial bird species rather than water or shore birds because terrestrial foods ( e.g., insects) are more dependent on temperature and vegetation budburst. 43 We did, however, observe that earlier breeders laid larger clutches, but clutch size was still insignificant towards breeding success.…”

Section: Discussioncontrasting

confidence: 60%

“…50,51 We also expected higher breeding success in larger eggs due to greater amounts of nutrients. 52,53 In studies of Williams 54 and Amininasab et al, 43 a positive and negative effect of egg size on breeding success was found, respectively. In contrast, Vinuela 55 and Amininasab et al 48 found no relationship between egg weight and breeding success, like the current study.…”

Section: Discussionmentioning

confidence: 95%

“…38,47 In contrast, we were unable to find a significant effect of nest size on breeding success in moorhens and little grebes in the same study area. 43,48 This nest size-dependent breeding success likely varies between precocial and alticial chicks. In altricial nestlings such as little bitterns, 49 nest size may be more important since they spend longer periods in the nest.…”

Section: Discussionmentioning

confidence: 99%

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Influence of breeding time, nest size, water depth, and egg size on the breeding success of the little bittern Ixobrychus minutus

Amininasab

Hosseini-Moosavi

2022

Avian Biology Research

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Understanding the factors that influence avian reproductive output is critical for bird conservation as they reveal key considerations that directly impact a species’ long term survival and should be integrated into management plans. To better this understanding for the little bittern Ixobrychus minutus, we investigated how their breeding success relates to breeding time, nest size, water depth, and egg size in a man-made wetland (Ab-bandan) during the 2008 breeding season in Mazandaran Province, northern Iran. For each nest, the dates of the first egg laying, the first hatching, and the first fledging were recorded as well as clutch sizes. Nest size parameters (height, depth, and diameter), water depth under the nest, and egg characteristics (shape index and weight) were measured. The first egg was laid on March 21 and the last chick left the nest on June 24. From 140 eggs in 25 nests, 127 eggs hatched (91%) and 121 fledglings left their nests (87%). Generalized linear modeling revealed that nest diameter positively affected breeding success ( p = 0.001) meaning larger nests were more likely to produce fledglings. Further studies will be necessary to elucidate the underlying mechanisms.

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Section: Discussioncontrasting

confidence: 60%

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

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Influence of breeding time, nest size, water depth, and egg size on the breeding success of the little bittern Ixobrychus minutus

Amininasab

Hosseini-Moosavi

2022

Avian Biology Research

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“…Birds are among the most ecologically and evolutionarily conserved vertebrates as several avian species are able to survive across wide geographical regions of the world [ 1 ]. Gallinula chloropus (Linnaeus, 1758), also called common moorhen, Eurasian moorhen, or black gallinule, is a wild aquatic bird belonging to the family Rallidae was shown to withstand harsh environmental conditions [ 2 ]. It is the founding member of the genus Gallinula, one of the family's main genera [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Anatomical, histochemical, and immunohistochemical observations on the gastrointestinal tract of Gallinula chloropus (Aves: Rallidae)

Abdellatif¹,

Farag²,

Metwally³

2022

BMC Zool

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Background Gallinula chloropus (Linnaeus, 1758) is a wild aquatic omnivorous bird characterized by a marked resistance to harsh environmental conditions and a worldwide distribution. In this study, anatomical, morphometrical, histochemical, and immunohistochemical techniques were employed to study the structure of the gastrointestinal tract of Gallinula chloropus. Results The esophagus appeared tubular with no distinct crop. Both superficial (SPG) and deep (DPG) proventricular glands were present. The DPG filled about two-thirds of the total wall thickness. Histochemically, the mucosubstances revealed mixed alcian blue-PAS positive reactions. They were mainly localized in the acini of the esophageal glands and SPG, gastric surface epithelium, duct system of DPG, and intestinal goblet cells. The highest number of goblet cells per every 1 mm2 of the intestinal mucosa was seen within the ileum and rectum, 2555 ± 468 and 2607 ± 653 respectively. Notably, glucagon immunoreactive (IR) cells were abundant in the mucosa of the small and large intestines and the proventriculus, while somatostatin IR cells were concentrated within the acini of the DPG. IR cells for the mitosis marker phospho-histone H3 (PHH3) were highest within the entire intestinal crypts and mucosa-associated lymphoid tissues (MALT). In contrast, cells IR for the apoptosis marker C.CASP3 were remarkable in epithelial cells at the tips of intestinal villi and in MALT, reflecting the dynamic nature of the latter mentioned structures. Conclusions The findings of the present study advance our knowledge of the gross and microscopic anatomy of the gastrointestinal tract in wild birds and could help to enhance the productivity of Aves via improving gut health.

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Sunny, hot and humid nesting locations with diverse vegetation benefit Osmia bees nearby almond orchards in a mediterranean area

Polidori,

Rodrigo-Gómez,

Ronchetti

et al. 2023

J Insect Conserv

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Wild bees (Hymenoptera: Apoidea) play an important role as pollinators of many crops and managed populations of Osmia spp. (Megachilidae), through the installation of trap-nests, proved to be efficient in several fruit orchards. In order to optimize the trap-nest protocols, it is necessary to understand which environmental factors play a major role in the reproductive success of these bees. Here, we studied how climate, land use and vegetation affect nest occupation rate (OR, i.e. total number of colonized tunnels/total number of tunnels in the trap-nest), brood productivity (BP, i.e. total number of brood cells built in a completed nest tunnel) and parasitism rate (PR, i.e. total number of parasitized brood cells/BP) in Osmia bees nearby almond orchards in South-East Spain, a largely understudied Mediterranean area. We found that the summer solar radiation positively influenced all three parameters, while spring solar radiation positively affected OR and BP, and negatively PR. Higher abundance of pastures and forests compared with crops increased OR, though not BP, and reduced PR. Vegetation evenness and diversity of dominant plant species also positively affected OR and BP, while they were unimportant for PR. OR was not affected by climate, but BP increased with maximum temperature in the warmest month and decreased with temperature annual range. PR also increased with high temperature, as well as with precipitation. Arid conditions limited OR and BP and boosted parasitism. Overall, it seems that Osmia bees nearby almond field in this area would benefit from trap-nest installation in well solar-radiated, hot and humid sites with a diverse vegetation. Since we have also found a negative association between PR and BP in nests with at least one parasitized cell, environmental conditions which improve productivity will also likely reduce parasitism in these bees.Implications for insect conservation Optimization of trap-nesting protocols for maintaining abundant Osmia populations is crucial to an effective use of these bees as managed pollinators. In our study we suggest that trap-nests locations should be chosen also taking into account a number of local climatic and habitat factors, given their importance in affecting key traits of reproductive success in these solitary bees.

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Influence of breeding time, nest size, and egg size on the breeding success of the Common Moorhen Gallinula chloropus

Cited by 3 publications

References 35 publications

Influence of breeding time, nest size, water depth, and egg size on the breeding success of the little bittern Ixobrychus minutus

Influence of breeding time, nest size, water depth, and egg size on the breeding success of the little bittern Ixobrychus minutus

Anatomical, histochemical, and immunohistochemical observations on the gastrointestinal tract of Gallinula chloropus (Aves: Rallidae)

Sunny, hot and humid nesting locations with diverse vegetation benefit Osmia bees nearby almond orchards in a mediterranean area

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