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  1. 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

    Content type: Research

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  2. 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

    Content type: Methodology

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  3. 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

    Content type: Research

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  4. 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

    Content type: Research

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  5. 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

    Content type: Research

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  6. 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

    Content type: Research

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  7. 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

    Content type: Research

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  9. 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

    Content type: Review

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  10. 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

    Content type: Review

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  12. 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

    Content type: Research

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  13. 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

    Content type: Research

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  14. 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

    Content type: Research

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  15. 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

    Content type: Research

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  16. 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

    Content type: Research

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  17. 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

    Content type: Research

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  18. 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

    Content type: Research

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  20. 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

    Content type: Research

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  21. 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

    Content type: Research

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  22. 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

    Content type: Research

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  23. 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

    Content type: Research

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  25. 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

    Content type: Research

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  26. 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

    Content type: Research

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  27. 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

    Content type: Research

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  28. 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

    Content type: Research

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  30. 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

    Content type: Research

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  31. 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

    Content type: Research

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  32. In small hibernators, global downregulation of the endocannabinoid system (ECS), which is involved in modulating neuronal signaling, feeding behavior, energy metabolism, and circannual rhythms, has been report...

    Authors: Christian Boyer, Laura Cussonneau, Charlotte Brun, Christiane Deval, Jean-Paul Pais de Barros, Stéphanie Chanon, Nathalie Bernoud-Hubac, Patricia Daira, Alina L. Evans, Jon M. Arnemo, Jon E. Swenson, Guillemette Gauquelin-Koch, Chantal Simon, Stéphane Blanc, Lydie Combaret, Fabrice Bertile…

    Citation: Frontiers in Zoology 2020 17:35

    Content type: Research

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  33. The feeding apparatus of salamanders consists mainly of the cranium, mandible, teeth, hyobranchial apparatus and the muscles of the cranial region. The morphology of the feeding apparatus in turn determines th...

    Authors: Daniel Schwarz, Nicolai Konow, Laura B. Porro and Egon Heiss

    Citation: Frontiers in Zoology 2020 17:34

    Content type: Research

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  34. Explanations for the ecological dominance of ants generally focus on the benefits of division of labour and cooperation during foraging. However, the principal innovation of ants relative to their wasp ancesto...

    Authors: Christian Peeters, Roberto A. Keller, Adam Khalife, Georg Fischer, Julian Katzke, Alexander Blanke and Evan P. Economo

    Citation: Frontiers in Zoology 2020 17:33

    Content type: Research

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  35. Fitness is strongly related to locomotor performance, which can determine success in foraging, mating, and other critical activities. Locomotor performance on different substrates is likely to require differen...

    Authors: Rishab Pillai, Eric Nordberg, Jendrian Riedel and Lin Schwarzkopf

    Citation: Frontiers in Zoology 2020 17:32

    Content type: Research

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  36. The initiation of desert conditions in the Tarim Basin in China since the late Miocene has led to the significant genetic structuring of local organisms. Tarim Red Deer (Cervus elaphus yarkandensis, TRD) have ada...

    Authors: Buweihailiqiemu Ababaikeri, Shamshidin Abduriyim, Yilamujiang Tohetahong, Tayerjan Mamat, Adil Ahmat and Mahmut Halik

    Citation: Frontiers in Zoology 2020 17:31

    Content type: Research

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  37. Metamorphic climax is the crucial stage of amphibian metamorphosis responsible for the morphological and functional changes necessary for transition to a terrestrial habitat. This developmental period is sensi...

    Authors: Wei Zhu, Liming Chang, Tian Zhao, Bin Wang and Jianping Jiang

    Citation: Frontiers in Zoology 2020 17:30

    Content type: Research

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  38. Growth trajectories should be adapted to selective factors of each species’ environment. However, major shaping forces of growth and development are unclear, especially when studying several traits at once. Bi...

    Authors: Vladimír Remeš, Beata Matysioková and Jakub Vrána

    Citation: Frontiers in Zoology 2020 17:29

    Content type: Research

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  39. Despite the diverse morphology of the adult squamate naso-palatal complex – consisting of the nasal cavity, vomeronasal organ (VNO), choanal groove, lacrimal duct and superficial palate – little is known about...

    Authors: Paweł Kaczmarek, Katarzyna Janiszewska, Brian Metscher and Weronika Rupik

    Citation: Frontiers in Zoology 2020 17:28

    Content type: Research

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  40. Understanding how wild species respond to novel situations with associated risk can provide valuable insights for inter-specific behavioral variation and associations with pace-of-life (POL). Rodents, a global...

    Authors: Ian Nicholas Best, Pei-Jen Lee Shaner, Hsuan-Yi Lo, Kurtis Jai-Chyi Pei and Chi-Chien Kuo

    Citation: Frontiers in Zoology 2020 17:27

    Content type: Research

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  41. Behaviour during hibernation contributes to energy conservation in winter. Hibernating bats select roosts with respect to physiological and environmental stressors, available local microclimate and species-spe...

    Authors: Natália Martínková, Stuart J. E. Baird, Vlastislav Káňa and Jan Zima

    Citation: Frontiers in Zoology 2020 17:26

    Content type: Research

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  42. Temperature affects many aspects of performance in poikilotherms, including how prey respond when encountering predators. Studies of anti-predator responses in fish mainly have focused on behaviour, whereas ph...

    Authors: Karl Filipsson, Eva Bergman, Larry Greenberg, Martin Österling, Johan Watz and Ann Erlandsson

    Citation: Frontiers in Zoology 2020 17:25

    Content type: Research

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  43. Morphological novelties have been acquired through evolutionary processes and related to the adaptation of new life-history strategies with new functions of the bodyparts. Cephalopod molluscs such as octopuses...

    Authors: Ryosuke Kimbara, Mayuko Nakamura, Kohei Oguchi, Hisanori Kohtsuka and Toru Miura

    Citation: Frontiers in Zoology 2020 17:24

    Content type: Research

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  44. Invasive species are of substantial concern because they may threaten ecosystem stability and biodiversity worldwide. Not surprisingly, studies examining the drivers of biological invasion have increased in nu...

    Authors: Austin M. Garner, Alexandra M. Pamfilie, E. J. Hamad, Rachael Kindig, Joshua T. Taylor, Colleen K. Unsworth and Peter H. Niewiarowski

    Citation: Frontiers in Zoology 2020 17:23

    Content type: Research

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  46. The gut is the major organ for nutrient absorption and immune response in the body of animals. Although effects of fasting on the gut functions have been extensively studied in model animals (e.g. mice), littl...

    Authors: Haijian Sun, Jiaying Wang, Yutong Xing, Yi-Hsuan Pan and Xiuguang Mao

    Citation: Frontiers in Zoology 2020 17:21

    Content type: Research

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  47. The ground pattern underlying the nervous system of the last common ancestor in annelids was long thought to be settled, consisting of a dorsal brain, circumoesophageal connectives and a subepithelial, ladder-...

    Authors: Hannah Schmidbaur, Thomas Schwaha, Rico Franzkoch, Günter Purschke and Gerhard Steiner

    Citation: Frontiers in Zoology 2020 17:20

    Content type: Research

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  48. Ascidians (phylum Chordata, class Ascidiacea) represent the closest living invertebrate relatives of the vertebrates and constitute an important model for studying the evolution of chordate development. The so...

    Authors: Tal Gordon, Lachan Roth, Federico Caicci, Lucia Manni and Noa Shenkar

    Citation: Frontiers in Zoology 2020 17:19

    Content type: Research

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  • ISSN: 1742-9994 (electronic)

Frontiers in Zoology

ISSN: 1742-9994