Feeding resource partitioning between two understorey insectivorous birds in a fragment of Neotropical cloud forest

Manhães, Marco Antônio; Dias, Manoel Martins; Lima, A. L. C.

doi:10.1590/1519-6984.09114

Cited by 4 publications

(3 citation statements)

References 31 publications

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“…Myiothlypis leucoblephara , Manhães et al . 2015; Stigmatura budytoides , Guerra Navarro 2016). Because the main foraging manoeuvre of Chilean Elaenias is sally‐hovering (i.e.…”

Section: Methodsmentioning

confidence: 99%

“…To evaluate the abundance of arthropods eaten by Chilean Elaenias, we considered only those individuals that were longer than 1 mm, because this is the minimum prey size consumed by other Neotropical passerines of similar size (e.g. Myiothlypis leucoblephara, Manhães et al 2015;Stigmatura budytoides, Guerra Navarro 2016). Because the main foraging manoeuvre of Chilean Elaenias is sally-hovering (i.e.…”

Section: Climatic and Food Abundance Data Collectionmentioning

confidence: 99%

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Fruit abundance may fine‐tune timing of reproduction of the Chilean Elaenia (Elaenia chilensis), a long‐distance migratory bird in South America

Gorosito

Tuero

Cueto

2023

Ibis

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Timing of reproduction has a great impact on the breeding success of birds because a mismatch with the moment when environmental conditions are warm or when food is most plentiful can reduce nestling survival and increase the energetic cost of parental care. Consequently, birds synchronize gonadal maturation with the most favourable environmental conditions, using photoperiod changes throughout the year as an initial proximal cue. Additionally, non‐photic cues, such as temperature and food abundance, may be necessary to fine‐tune reproductive timing. However, the influence of non‐photic cues on finely tuning reproductive timing is not yet fully understood for migratory birds. Here, we evaluate how much non‐photic cues influence the reproductive timing of the Chilean Elaenia Elaenia chilensis, a long‐distance migrant that reproduces in the Andean–Patagonian Forest. We assessed associations of mean temperature, ripe fruit and arthropod abundances with the number of nests in the laying period, and also with the number of nests with hatchlings. In both analyses we used cross‐correlations and partial least squares path modelling. Mean temperature was not consistently associated with the breeding phenology of Chilean Elaenias. The increase in number of nests in the laying period was preceded by the increase in caterpillar abundance and coincided with the increase in ripe fruit abundance. The timing of nests with hatchlings matched with the timing of highest ripe fruit abundance. Both types of food could contribute to the beginning of reproduction of birds and be used as proximal cues by Chilean Elaenias. Ripe fruits would also be beneficial for nestling growth because parents feed them with fruits, and might potentially play an ultimate role in reproduction. Because ripe fruit abundance was related to the egg‐laying and hatching stages, it may be the main cue used by Chilean Elaenias to fine‐tune reproductive timing. These findings allow advances in our understanding of the importance of non‐photic cues in the reproductive phenology of migratory birds and also generalize our knowledge among regions and taxa, as most studies on this topic focus on the Northern Hemisphere.

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“…Myiothlypis leucoblephara , Manhães et al . 2015; Stigmatura budytoides , Guerra Navarro 2016). Because the main foraging manoeuvre of Chilean Elaenias is sally‐hovering (i.e.…”

Section: Methodsmentioning

confidence: 99%

Section: Climatic and Food Abundance Data Collectionmentioning

confidence: 99%

Fruit abundance may fine‐tune timing of reproduction of the Chilean Elaenia (Elaenia chilensis), a long‐distance migratory bird in South America

Gorosito

Tuero

Cueto

2023

Ibis

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“…Pharmacological reagents in channel research. Because the insectivorous conotoxin can kill many kinds of worms [5] , it has the potential to cultivate new varieties of insect-resistant crops or develop it as a peptide insecticide. Therefore, conotoxin has become a new source of new drug development and a powerful tool for pharmacology and neuroscience [6] , and it ranks rst in the research of animal neurotoxins.…”

mentioning

confidence: 99%

Prediction of Conotoxin Type Based on Long Short-term Memory Network

Wang

Chang

Wei

2021

Preprint

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Background: Conotoxin is a valuable peptide that targets ion channels and neuronal receptors. The toxin has been proven to be an effective drug for treating a series of diseases, but the process of identifying the type of toxin through traditional wet experiments is very complicated, low efficiency and high cost, but the method of machine learning is used to identify the cono toxin. Training in the process can effectively change this status quo.Methods: A method to predict the type of spiral toxin using the sequence information of the toxin combined with the long-term short-term memory network (LSTM) method model. This method only needs to take the conotoxin peptide sequence as input, and uses the character embedding method in text processing to automatically map the sequence to the feature vector representation, and extract the features for training and prediction.Results: Experimental results show that the correct index of this method on the test set reaches 0.80, and the AUC (area under the ROC curve) value reaches 0.817. For the same test set, the AUC value of the KNN algorithm is 0.641, and the AUC value of the method proposed in this paper is 0.817.Conclusions: The algorithm does not require manual feature extraction and feature reconstruction steps, thereby simplifying the algorithm design, and can use the advantages of the long-term dependence of LSTM according to the characteristics of the cono toxin sequence, so that its classification can be better predicted, and the classification of the cono toxin can be better predicted. The sequence information of spirotoxin combined with the LSTM method can be better than the KNN classification algorithm.

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Selective predation by the White-browed Warbler (Myiothlypis leucoblephara), a Neotropical understorey insectivorous bird

Lima

Manhães

Melo

2020

Studies on Neotropical Fauna and Environment

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Feeding resource partitioning between two understorey insectivorous birds in a fragment of Neotropical cloud forest

Cited by 4 publications

References 31 publications

Fruit abundance may fine‐tune timing of reproduction of the Chilean Elaenia (Elaenia chilensis), a long‐distance migratory bird in South America

Fruit abundance may fine‐tune timing of reproduction of the Chilean Elaenia (Elaenia chilensis), a long‐distance migratory bird in South America

Prediction of Conotoxin Type Based on Long Short-term Memory Network

Selective predation by the White-browed Warbler (Myiothlypis leucoblephara), a Neotropical understorey insectivorous bird

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