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  1. Quantity discrimination, the ability to discriminate a magnitude of difference or discrete numerical information, plays a key role in animal behavior. While quantitative ability has been well documented in fis...

    Authors: Feng-Chun Lin, Martin J. Whiting, Ming-Ying Hsieh, Pei-Jen Lee Shaner and Si-Min Lin
    Citation: Frontiers in Zoology 2021 18:49
  2. Temperate bat species use extended torpor to conserve energy when ambient temperatures are low and food resources are scarce. Previous research suggests that migratory bat species and species known to roost in...

    Authors: Riley F. Bernard, Emma V. Willcox, Reilly T. Jackson, Veronica A. Brown and Gary F. McCracken
    Citation: Frontiers in Zoology 2021 18:48
  3. In many mammalian species, once the permanent teeth have erupted, the only change to dentition is a gradual loss of tooth surface/height through wear. The crown of the teeth cannot be repaired once worn. When ...

    Authors: Roberta Chirichella, Anna Maria De Marinis, Boštjan Pokorny and Marco Apollonio
    Citation: Frontiers in Zoology 2021 18:47
  4. Ant colonies are plagued by a diversity of arthropod guests, which adopt various strategies to avoid or to withstand host attacks. Chemical mimicry of host recognition cues is, for example, a common integratio...

    Authors: Christoph von Beeren, Adrian Brückner, Philipp O. Hoenle, Bryan Ospina-Jara, Daniel J. C. Kronauer and Nico Blüthgen
    Citation: Frontiers in Zoology 2021 18:46

    The Correction to this article has been published in Frontiers in Zoology 2022 19:2

  5. One of the most prominent life-history trade-offs involves the cost of reproduction. Oxidative stress has been proposed to be involved in this trade-off and has been associated with reduced life span. There is...

    Authors: Paul Juan Jacobs, Daniel William Hart and Nigel Charles Bennett
    Citation: Frontiers in Zoology 2021 18:45
  6. Many annelids, including well-studied species such as Platynereis, show similar structured segments along their body axis (homonomous segmentation). However, numerous annelid species diverge from this pattern and...

    Authors: Nadezhda Rimskaya-Korsakova, Nadezda Karaseva, Timofei Pimenov, Hans Tore Rapp, Eve Southward, Elena Temereva and Katrine Worsaae
    Citation: Frontiers in Zoology 2021 18:44
  7. Interspecific interactions within ecological networks can influence animal fitness and behaviour, including nest-site selection of birds and ants. Previous studies revealed that nesting birds and ants may bene...

    Authors: Marta Maziarz, Richard K. Broughton, Luca Pietro Casacci, Grzegorz Hebda, István Maák, Gema Trigos-Peral and Magdalena Witek
    Citation: Frontiers in Zoology 2021 18:43
  8. Mitochondrial function involves the interplay between mitochondrial and nuclear genomes. Such mitonuclear interactions can be disrupted by the introgression of mitochondrial DNA between taxa or divergent popul...

    Authors: Yuting Ding, Wenli Chen, Qianqian Li, Stephen J. Rossiter and Xiuguang Mao
    Citation: Frontiers in Zoology 2021 18:42
  9. Many animals lower their metabolic rate in response to low temperatures and scarcity of food in the winter in phenomena called hibernation or overwintering. Living at high altitude on the Tibetan Plateau where...

    Authors: Yonggang Niu, Xuejing Zhang, Haiying Zhang, Tisen Xu, Lifeng Zhu, Kenneth B. Storey and Qiang Chen
    Citation: Frontiers in Zoology 2021 18:41
  10. Amphibian biodiversity is declining globally, with over 40% of species being considered threatened to become extinct. Crucial to the success of conservation initiatives are a comprehensive understanding of lif...

    Authors: Jeffrey P. Ethier, Aurore Fayard, Peter Soroye, Daeun Choi, Marc J. Mazerolle and Vance L. Trudeau
    Citation: Frontiers in Zoology 2021 18:40
  11. Poison frogs are known for the outstanding diversity of alkaloid-based chemical defences with promising therapeutic applications. However, current knowledge about chemical defences in Dendrobatoidea superfamil...

    Authors: Mabel Gonzalez, Pablo Palacios-Rodriguez, Jack Hernandez-Restrepo, Marco González-Santoro, Adolfo Amézquita, Andrés E. Brunetti and Chiara Carazzone
    Citation: Frontiers in Zoology 2021 18:39
  12. In egg-laying animals, mothers can influence the developmental environment and thus the phenotype of their offspring by secreting various substances into the egg yolk. In birds, recent studies have demonstrate...

    Authors: Lucia Mentesana, Martin N. Andersson, Stefania Casagrande, Wolfgang Goymann, Caroline Isaksson and Michaela Hau
    Citation: Frontiers in Zoology 2021 18:38
  13. The acoustic adaptation hypothesis (AAH) states that signals should evolve towards an optimal transmission of the intended information from senders to intended receivers given the environmental constraints of ...

    Authors: Longhui Zhao, Juan C. Santos, Jichao Wang, Jianghong Ran, Yezhong Tang and Jianguo Cui
    Citation: Frontiers in Zoology 2021 18:37
  14. Primate colour vision depends on a matrix of photoreceptors, a neuronal post receptoral structure and a combination of genes that culminate in different sensitivity through the visual spectrum. Along with a co...

    Authors: Leonardo Dutra Henriques, Einat Hauzman, Daniela Maria Oliveira Bonci, Belinda S. W. Chang, José Augusto Pereira Carneiro Muniz, Givago da Silva Souza, Luiz Carlos de Lima Silveira, Olavo de Faria Galvão, Paulo Roney Kilpp Goulart and Dora Fix Ventura
    Citation: Frontiers in Zoology 2021 18:36
  15. The endless struggle to survive has driven harmless species to evolve elaborate strategies of deceiving predators. Batesian mimicry involves imitations of noxious species’ warning signals by palatable mimics. ...

    Authors: Marta Skowron Volponi, Luca Pietro Casacci, Paolo Volponi and Francesca Barbero
    Citation: Frontiers in Zoology 2021 18:35
  16. Warm-adapted species survived the cold stages of the past glacial-interglacial cycles in southern European peninsulas and recolonized major parts of Central and Northern Europe in the wake of postglacial warmi...

    Authors: Thomas Schmitt, Uwe Fritz, Massimo Delfino, Werner Ulrich and Jan Christian Habel
    Citation: Frontiers in Zoology 2021 18:34
  17. Human actions have altered natural ecosystems worldwide. Among the many pollutants released to the environment, ionizing radiation can cause severe damage at different molecular and functional levels. The acci...

    Authors: Pablo Burraco, Jean-Marc Bonzom, Clément Car, Karine Beaugelin-Seiller, Sergey Gashchak and Germán Orizaola
    Citation: Frontiers in Zoology 2021 18:33
  18. Parity mode (oviparity/viviparity) importantly affects the ecology, morphology, physiology, biogeography and evolution of organisms. The main hypotheses explaining the evolution and maintenance of viviparity a...

    Authors: J. L. Horreo, A. Jiménez-Valverde and P. S. Fitze
    Citation: Frontiers in Zoology 2021 18:32
  19. Comparative cognition has historically focused on a few taxa such as primates, birds or rodents. However, a broader perspective is essential to understand how different selective pressures affect cognition in ...

    Authors: Alvaro Lopez Caicoya, Federica Amici, Conrad Ensenyat and Montserrat Colell
    Citation: Frontiers in Zoology 2021 18:30
  20. Gelatinous zooplankton can be difficult to preserve morphologically due to unique physical properties of their cellular and acellular components. The relatively large volume of mesoglea leads to distortion of ...

    Authors: Dorothy G. Mitchell, Allison Edgar and Mark Q. Martindale
    Citation: Frontiers in Zoology 2021 18:29
  21. Signal detection is crucial to survival and successful reproduction, and animals often modify behavioral decisions based on information they obtained from the social context. Undeniably, the decision-making in...

    Authors: Ke Deng, Ya Zhou, Qiao-Ling He, Bi-Cheng Zhu, Tong-Liang Wang, Ji-Chao Wang and Jian-Guo Cui
    Citation: Frontiers in Zoology 2021 18:28
  22. In syllids (Annelida, Syllidae), the regenerative blastema was subject of many studies in the mid and late XXth century. This work on syllid regeneration showed that the blastema is developed by a process of dedi...

    Authors: Rannyele Passos Ribeiro, Bernhard Egger, Guillermo Ponz-Segrelles and M. Teresa Aguado
    Citation: Frontiers in Zoology 2021 18:27
  23. Trophic interactions are key processes, which determine the ecological function and performance of organisms. Many decapod crustaceans feed on plant material as a source for essential nutrients, e.g. polyunsat...

    Authors: Meike Stumpp, Reinhard Saborowski, Simon Jungblut, Hung-Chang Liu and Wilhelm Hagen
    Citation: Frontiers in Zoology 2021 18:26
  24. Animal communities have complex patterns of ecological segregation at different levels according to food resources, habitats, behavior, and activity patterns. Understanding these patterns among the community i...

    Authors: Battogtokh Nasanbat, Francisco Ceacero and Samiya Ravchig
    Citation: Frontiers in Zoology 2021 18:25
  25. Interannual variation in resource abundance has become more unpredictable, and food shortages have increasingly occurred in the recent decades. However, compared to seasonal fluctuations in resource abundance,...

    Authors: Jinjin Hou, Lei Li, Yafang Wang, Wenjuan Wang, Huiying Zhan, Nianhua Dai and Ping Lu
    Citation: Frontiers in Zoology 2021 18:24
  26. Corticosteroid-binding globulin (CBG) is a high-affinity plasma protein that binds glucocorticoids (GCs) and regulates their biological activities. The structural and functional properties of CBG are crucial t...

    Authors: Hai-Yan Lin, Gang Song, Fumin Lei, Dongming Li and Yanhua Qu
    Citation: Frontiers in Zoology 2021 18:22
  27. Birds exhibit an enormous diversity in adult skull shape (disparity), while their embryonic chondrocrania are considered to be conserved across species. However, there may be chondrocranial features that are d...

    Authors: Evelyn Hüppi, Ingmar Werneburg and Marcelo R. Sánchez-Villagra
    Citation: Frontiers in Zoology 2021 18:21
  28. Mating generally occurs after individuals reach adulthood. In many arthropods including spiders, the adult stage is marked by a final moult after which the genitalia are fully developed and functional. In seve...

    Authors: Lenka Sentenská, Aileen Neumann, Yael Lubin and Gabriele Uhl
    Citation: Frontiers in Zoology 2021 18:19
  29. Postzygote isolation is an important part of species isolation, especially for fish, and it can be divided into two aspects: genetic isolation and ecological isolation. With the increase in parental genetic di...

    Authors: Haoran Gu, Yuanfu Wang, Haoyu Wang, You He, Sihong Deng, Xingheng He, Yi Wu, Kaiyan Xing, Xue Gao, Xuefu He and Zhijian Wang
    Citation: Frontiers in Zoology 2021 18:18
  30. The jointed appendage is a key novelty in arthropod evolution and arthropod legs are known to vary enormously in relation to function. Among centipedes, the ultimate legs always are distinctly different from l...

    Authors: Andy Sombke and Carsten H. G. Müller
    Citation: Frontiers in Zoology 2021 18:17
  31. We tested the hypothesis that deep-sea fishes have poorly mineralized bone relative to shallower-dwelling species using data from a single family that spans a large depth range. The family Liparidae (snailfish...

    Authors: M. E. Gerringer, A. S. Dias, A. A. von Hagel, J. W. Orr, A. P. Summers and S. Farina
    Citation: Frontiers in Zoology 2021 18:16
  32. Anhydrobiosis can be described as an adaptation to lack of water that enables some organisms, including tardigrades, to survive extreme conditions, even some that do not exist on Earth. The cellular mechanisms...

    Authors: Daria Wojciechowska, Andonis Karachitos, Milena Roszkowska, Wiktor Rzeźniczak, Robert Sobkowiak, Łukasz Kaczmarek, Jakub Z. Kosicki and Hanna Kmita
    Citation: Frontiers in Zoology 2021 18:15
  33. Understanding the impacts of past and contemporary climate change on biodiversity is critical for effective conservation. Amphibians have weak dispersal abilities, putting them at risk of habitat fragmentation...

    Authors: Zhenhua Luo, Xiaoyi Wang, Shaofa Yang, Xinlan Cheng, Yang Liu and Junhua Hu
    Citation: Frontiers in Zoology 2021 18:14
  34. Worker reproduction has an important influence on the social cohesion and efficiency of social insect colonies, but its role in the success of invasive ants has been neglected. We used observations of 233 capt...

    Authors: Pauline Lenancker, Heike Feldhaar, Anja Holzinger, Melinda Greenfield, Angela Strain, Peter Yeeles, Benjamin D. Hoffmann, Wee Tek Tay and Lori Lach
    Citation: Frontiers in Zoology 2021 18:13
  35. The theory of delayed life history effects assumes that phenotype of adult individual results from environmental conditions experienced at birth and as juvenile. In seasonal environments, being born late in th...

    Authors: Anna S. Przybylska-Piech, Michał S. Wojciechowski and Małgorzata Jefimow
    Citation: Frontiers in Zoology 2021 18:11
  36. The yellow fever mosquito, Aedes aegypti, is the principal vector of medically-important infectious viruses that cause severe illness such as dengue fever, yellow fever and Zika. The transmission potential of mos...

    Authors: Jiayue Yan, Roumaissa Kibech and Chris M. Stone
    Citation: Frontiers in Zoology 2021 18:10
  37. Meligethes are pollen-beetles associated with flowers of Rosaceae as larvae. This genus currently consists of 63 known species in two subgenera, Meligethes and Odonthogethes, predominantly occurring in the easter...

    Authors: Meike Liu, Min Huang, Andrew Richard Cline, Emiliano Mancini, Andrea Scaramuzzi, Simone Paradisi, Paolo Audisio, Davide Badano and Simone Sabatelli
    Citation: Frontiers in Zoology 2021 18:9
  38. The connection between testosterone and territoriality in free-living songbirds has been well studied in a reproductive context, but less so outside the breeding season. To assess the effects of seasonal andro...

    Authors: Camila P. Villavicencio, Harriet Windley, Pietro B. D’Amelio, Manfred Gahr, Wolfgang Goymann and René Quispe
    Citation: Frontiers in Zoology 2021 18:8
  39. Nesting in large aggregations provides several important advantages for colonially breeding birds. However, it also imposes certain costs, associated with facilitated pathogen transmission and social stress. T...

    Authors: Maciej Kamiński, Tomasz Janiszewski, Piotr Indykiewicz, Jacek J. Nowakowski, Jarosław Kowalski, Beata Dulisz and Piotr Minias
    Citation: Frontiers in Zoology 2021 18:7
  40. Invasive species bring a serious effect on local biodiversity, ecosystems, and even human health and safety. Although the genetic signatures of historical range expansions have been explored in an array of spe...

    Authors: Yi Chen, Lei Zhao, Huajing Teng, Chengmin Shi, Quansheng Liu, Jianxu Zhang and Yaohua Zhang
    Citation: Frontiers in Zoology 2021 18:6
  41. Captive facilities such as zoos are uniquely instrumental in conservation efforts. To fulfill their potential as bastions for conservation, zoos must preserve captive populations as appropriate proxies for the...

    Authors: Leila Siciliano-Martina, Jessica E. Light and A. Michelle Lawing
    Citation: Frontiers in Zoology 2021 18:4
  42. Why a variety of social animals emit foraging-associated calls during group foraging remains an open question. These vocalizations may be used to recruit conspecifics to food patches (i.e. food advertisement h...

    Authors: Dongge Guo, Jianan Ding, Heng Liu, Lin Zhou, Jiang Feng, Bo Luo and Ying Liu
    Citation: Frontiers in Zoology 2021 18:3
  43. Condition indices (CIs) are used in ecological studies as a way of measuring an individual animal’s health and fitness. Noninvasive CIs are estimations of a relative score of fat content or rely on a ratio of ...

    Authors: Guy Sion, Maggie J. Watson and Amos Bouskila
    Citation: Frontiers in Zoology 2021 18:1
  44. The Chinese monal (Lophophorus lhuysii) is an endangered bird species, with a wild population restricted to the mountains in southwest China, and only one known captive population in the world. We investigated th...

    Authors: Dandan Jiang, Xin He, Marc Valitutto, Li Chen, Qin Xu, Ying Yao, Rong Hou and Hairui Wang
    Citation: Frontiers in Zoology 2020 17:36