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Dawson LC, Meagher R, Ahloy‐Dallaire J, Mason G. Practice does not make perfect: Juvenile object play does not improve the predation skills of adult mink in “simulated prey” tests. Dev Psychobiol 2022; 64:e22268. [DOI: 10.1002/dev.22268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 02/03/2022] [Accepted: 02/06/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Lauren C. Dawson
- Department of Integrative Biology University of Guelph Guelph ON Canada
| | - Rebecca Meagher
- Department of Animal Science and Aquaculture Dalhousie University Truro NS Canada
| | | | - Georgia Mason
- Department of Integrative Biology University of Guelph Guelph ON Canada
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2
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Möckel D, Groulx T, Faure PA. Development of hearing in the big brown bat. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2020; 207:27-42. [PMID: 33200279 DOI: 10.1007/s00359-020-01452-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/24/2020] [Accepted: 10/23/2020] [Indexed: 01/14/2023]
Abstract
We studied the development of hearing in newborn pups of the big brown bat, Eptesicus fuscus. In the majority of pups, the opening of both outer auditory canals occurred on or before postnatal day (PND) 7, but in some, it extended to PND 11. Using repeated auditory brainstem response (ABR) recordings, we tracked the progressive development and maturation of auditory sensitivity in 22 E. fuscus pups every 3 days, from PND 10 to PND 31, with additional recordings in a subset of bats at 2 months, 3 months and 1 year of life. There was a profound increase in auditory sensitivity across development for frequencies between 4 and 100 kHz, with the largest threshold shifts occurring early in development between PND 10 and 19. Prior to PND 13-16 and when pups were still non-volant, most bats were unable to hear frequencies above 48 kHz; however, sensitivity to these higher ultrasonic frequencies increased with age. Notably, this change occurred near the age when young bats started learning how to fly and echolocate.
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Affiliation(s)
- Doreen Möckel
- Department of Psychology, Neuroscience & Behaviour, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Thomas Groulx
- Department of Psychology, Neuroscience & Behaviour, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Paul A Faure
- Department of Psychology, Neuroscience & Behaviour, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada.
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Zieliński D, Ślaska B, Rozempolska-Rucińska I. Maternal behaviour in American mink females with different behavioural profiles. JOURNAL OF ANIMAL AND FEED SCIENCES 2019. [DOI: 10.22358/jafs/114136/2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Malmkvist J, Hansen SW, Damgaard BM, Christensen JW. Maternal temperament modulates curiosity and cortisol responses in farmed mink. Physiol Behav 2019; 211:112679. [DOI: 10.1016/j.physbeh.2019.112679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 09/03/2019] [Accepted: 09/05/2019] [Indexed: 11/24/2022]
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Linnenschmidt M, Wiegrebe L. Ontogeny of auditory brainstem responses in the bat, Phyllostomus discolor. Hear Res 2019; 373:85-95. [PMID: 30612027 DOI: 10.1016/j.heares.2018.12.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/23/2018] [Accepted: 12/21/2018] [Indexed: 01/15/2023]
Abstract
Hearing is the primary sensory modality in bats, but its development is poorly studied. For newborns, hearing appears essential in maintaining contact with their mothers and to develop echolocation abilities. Here we measured auditory brainstem responses (ABRs) to clicks and narrowband tone pips covering a large frequency range (5-90 kHz) in juveniles (p7 to p200) and adults of the bat, Phyllostomus discolor. Tone-pip audiograms show that juveniles at p7 are already quite responsive, not only below 20 kHz but up to 90 kHz. Hearing sensitivity increases further until about p14 and is then refined, possibly correlated with growth and differentiation of the animals' outer ears. ABR amplitudes decrease within the first 3-4 months, inversely correlated with the bat weight and forearm length. ABR Wave I latency decreases with increasing stimulation level. ABR duration (measured between Waves I and V) is longer in juveniles and shortens with age which may reflect temporal refinement of auditory brainstem neurons to accommodate the exceptional temporal precision required for effective echolocation. Overall our data show that P. discolor bats have good hearing very early in life. The current method represents a fast and minimally invasive way of characterizing basic hearing in bats.
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Affiliation(s)
- Meike Linnenschmidt
- Division of Neurobiology, Dept. Biology II, Ludwig-Maximilians-University Munich, Großhaderner Str. 2, 82152, Planegg-Martinsried, Germany.
| | - Lutz Wiegrebe
- Division of Neurobiology, Dept. Biology II, Ludwig-Maximilians-University Munich, Großhaderner Str. 2, 82152, Planegg-Martinsried, Germany.
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Malmkvist J. Early recognition of offspring vocalisation by mink mothers. Appl Anim Behav Sci 2019. [DOI: 10.1016/j.applanim.2018.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Schou TM, Malmkvist J. Maternal nest building and choice of nest site are temperature dependent in mink: Parent-offspring temperature conflict? Appl Anim Behav Sci 2018. [DOI: 10.1016/j.applanim.2018.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Brandt C, Brande-Lavridsen N, Christensen-Dalsgaard J. The Masked ABR (mABR): a New Measurement Method for the Auditory Brainstem Response. J Assoc Res Otolaryngol 2018; 19:753-761. [PMID: 30238407 DOI: 10.1007/s10162-018-00696-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 09/04/2018] [Indexed: 11/26/2022] Open
Abstract
The auditory brainstem response (ABR) is relatively non-invasive, and in many species, the only practical way to assess auditory sensitivity. The two main methods for measuring ABR are using either transients or tone bursts as a stimulus. The transient stimulus produces strong neural responses that contain no frequency information. In contrast, tone bursts stimulate only a small part of the auditory system, eliciting weaker neural responses but supplying frequency information. Furthermore, short tone bursts become less and less frequency specific with increasing stimulus wavelength, making them unsuitable for testing low-frequency hearing. Here, we develop a method that can measure sensitivity to both low and high-frequency stimuli. The method is based on masking of a transient response by long-duration sinusoids. The measurement system is developed as a highly portable system that runs on battery power. It has been used in a variety of animals in our lab and in the field, including squid (Mooney et al. in J Exp Biol 213: 3748-3759, 2010), lungfish (Christensen-Dalsgaard et al. in J Neurophys 105: 1992-2004, 2011b), alligators (Bierman et al. in J Exp Biol 217: 1094-1107, 2014), and mink (Brandt et al. in J Exp Biol 216: 3542-3550, 2013). Here, we present data recorded from Tokay geckos and compare the results with tone burst ABR measurements. This method produces results comparable to tone burst stimulations at higher frequencies (above 1 kHz) but has several advantages: it is relatively insensitive to fluctuations in neural signal level, it allows measurements at very low frequencies, it allows constant monitoring of the state of the animal, and can be used to measure directional hearing.
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Affiliation(s)
- Christian Brandt
- Institute of Clinical Research, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark.
- Institute of Biology, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark.
| | - Nanna Brande-Lavridsen
- Institute of Biology, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
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Nielsen BL. Making sense of it all: The importance of taking into account the sensory abilities of animals in their housing and management. Appl Anim Behav Sci 2018. [DOI: 10.1016/j.applanim.2018.04.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Gerhardt P, Henning Y, Begall S, Malkemper EP. Audiograms of three subterranean rodent species (genus Fukomys) determined by auditory brainstem responses reveal extremely poor high-frequency hearing. ACTA ACUST UNITED AC 2017; 220:4377-4382. [PMID: 29025871 DOI: 10.1242/jeb.164426] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 10/05/2017] [Indexed: 11/20/2022]
Abstract
Life underground has shaped the auditory sense of subterranean mammals, shifting their hearing range to low frequencies. Mole-rats of the genus Fukomys have, however, been suggested to hear at frequencies up to 18.5 kHz, unusually high for a subterranean rodent. We present audiograms of three mole-rat species, Fukomys anselli, Fukomys micklemi and the giant mole-rat Fukomys mechowii, based on evoked auditory brainstem potentials. All species showed low sensitivity and restricted hearing ranges at 60 dB SPL extending from 125 Hz to 4 kHz (5 octaves) with most-sensitive hearing between 0.8 kHz and 1.4 kHz. The high-frequency cut-offs are the lowest found in mammals to date. In contrast to predictions from middle ear morphology, F. mechowii did not show higher sensitivity than F. anselli in the low-frequency range. These data suggest that the hearing range of Fukomys mole-rats is highly restricted to low frequencies and similar to that of other subterranean mammals.
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Affiliation(s)
- Patricia Gerhardt
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, 45117 Essen, Germany
| | - Yoshiyuki Henning
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, 45117 Essen, Germany
| | - Sabine Begall
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, 45117 Essen, Germany
| | - E Pascal Malkemper
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, 45117 Essen, Germany .,Department of Wildlife Management, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, 16521 Praha 6, Czech Republic
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Wahlberg M, Delgado-García L, Kristensen JH. Precocious hearing in harbour porpoise neonates. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2017; 203:121-132. [DOI: 10.1007/s00359-017-1145-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 01/04/2017] [Indexed: 11/29/2022]
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Malmkvist J, Sørensen DD, Larsen T, Palme R, Hansen SW. Weaning and separation stress: maternal motivation decreases with litter age and litter size in farmed mink. Appl Anim Behav Sci 2016. [DOI: 10.1016/j.applanim.2016.05.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Blackstad JS, Osen KK, Scharfman HE, Storm-Mathisen J, Blackstad TW, Leergaard TB. Observations on hippocampal mossy cells in mink (Neovison vison) with special reference to dendrites ascending to the granular and molecular layers. Hippocampus 2015; 26:229-45. [PMID: 26286893 DOI: 10.1002/hipo.22518] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 08/10/2015] [Accepted: 08/11/2015] [Indexed: 12/25/2022]
Abstract
Detailed knowledge about the neural circuitry connecting the hippocampus and entorhinal cortex is necessary to understand how this system contributes to spatial navigation and episodic memory. The two principal cell types of the dentate gyrus, mossy cells and granule cells, are interconnected in a positive feedback loop, by which mossy cells can influence information passing from the entorhinal cortex via granule cells to hippocampal pyramidal cells. Mossy cells, like CA3 pyramidal cells, are characterized by thorny excrescences on their proximal dendrites, postsynaptic to giant terminals of granule cell axons. In addition to disynaptic input from the entorhinal cortex and perforant path via granule cells, mossy cells may also receive monosynaptic input from the perforant path via special dendrites ascending to the molecular layer. We here report qualitative and quantitative descriptions of Golgi-stained hippocampal mossy cells in mink, based on light microscopic observations and three-dimensional reconstructions. The main focus is on the location, branching pattern, and length of dendrites, particularly those ascending to the granular and molecular layers. In mink, the latter dendrites are more numerous than in rat, but fewer than in primates. They form on average 12% (and up to 29%) of the total dendritic length, and appear to cover the terminal fields of both the lateral and medial perforant paths. In further contrast to rat, the main mossy cell dendrites in mink branch more extensively with distal dendrites encroaching upon the CA3 field. The dendritic arbors extend both along and across the septotemporal axis of the dentate gyrus, not conforming to the lamellar pattern of the hippocampus. The findings suggest that the afferent input to the mossy cells becomes more complex in species closer to primates.
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Affiliation(s)
- Jan Sigurd Blackstad
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Kirsten K Osen
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Helen E Scharfman
- Center for Dementia Research, The Nathan Kline Institute for Psychiatric Research, Orangeburg New York and Departments of Psychiatry, Physiology & Neuroscience, New York University Langone Medical Center, New York, New York
| | - Jon Storm-Mathisen
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Theodor W Blackstad
- Department of Anatomy, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Trygve B Leergaard
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
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Malmkvist J, Palme R. Early transfer of mated females into the maternity unit reduces stress and increases maternal care in farm mink. Appl Anim Behav Sci 2015. [DOI: 10.1016/j.applanim.2015.03.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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