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Male sperm storage impairs sperm quality in the zebrafish. Sci Rep 2021; 11:16689. [PMID: 34404815 PMCID: PMC8371167 DOI: 10.1038/s41598-021-94976-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/19/2021] [Indexed: 01/03/2023] Open
Abstract
Variation in sperm traits is widely documented both at inter- and intraspecific level. However, sperm traits vary also between ejaculates of the same male, due for example, to fluctuations in female availability. Variability in the opportunities to mate can indeed have important consequences for sperm traits, as it determines how often sperm are used, and thus the rate at which they are produced and how long they are stored before the mating. While being stored within males’ bodies, sperm are subjected to ageing due to oxidative stress. Sperm storage may significantly impair sperm quality, but evidence linking male sperm storage and variation in sperm traits is still scarce. Here, we tested the effect of the duration of sperm storage on within-male variation in sperm traits in the zebrafish, Danio rerio. We found that without mating opportunities, sperm number increased as storage duration increased, indicating that sperm continue to be produced and accumulate over time within males without being discharged in another way. Long sperm storage (12 days) was associated with an overall impairment in sperm quality, namely sperm motility, sperm longevity, and sperm DNA fragmentation, indicating that sperm aged, and their quality declined during storage. Our results confirm that male sperm storage may generate substantial variation in sperm phenotype, a source of variation which is usually neglected but that should be accounted for in experimental protocols aiming to assay sperm traits or maximise fertilization success.
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DETERMINING THE SAFETY OF REPEATED ELECTROEJACULATIONS IN VEILED CHAMELEONS CHAMAELEO CALYPTRATUS. J Zoo Wildl Med 2021; 50:557-569. [PMID: 33517624 DOI: 10.1638/2019-0004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2019] [Indexed: 11/21/2022] Open
Abstract
Investigation into antemortem semen collection methods in reptiles is required to counteract anthropogenic induced reptile biodiversity loss and to further develop assisted reproductive technologies in reptiles. The purpose of this study was to evaluate whether repeated electroejaculation under anesthesia could be done safely in the veiled chameleon (Chamaeleo calyptratus). Electroejaculation under anesthesia (alfaxalone 15 mg/kg intravenously) was performed once weekly over a 4-wk period in 12 Chamaeleo calyptratus. External vent appearance and cloacoscopy was performed prior to and after electroejaculation to assess the effect of the electroejaculation on the external and internal anatomy. Hematological and chemistry values were evaluated prior to the study and afterwards. Semen collection was successful in 50% of the electroejaculation events. Cloacoscopy images scores were significantly higher between the pre- and postelectroejaculation events for each week. No significant difference was observed between study week 1 prior to electroejaculation and study week 4 after electroejaculation in vent external morphology (P = 0.157), and internal cloacal scoring (P = 0.058). A significant increase in the white blood cell counts (P = 0.015), absolute heterophil counts (P = 0.02), absolute monocyte counts (P = 0.003), and albumin (P = 0.038) was observed between the pre- and postejaculation sampling periods. Aspartate aminotransferase (P = 0.001) and potassium (P = 0.036) decreased significantly between the pre- and postsampling periods. Vent image scores were significantly higher (P = 0.046) between the pre- and postsampling images collected during week 1; however, there were no significant differences noted between pre- and postsample images for weeks 2 (P= 0.063), 3(P= 0.083), or 4 (P= 0.083). Serial electroejaculation procedures under alfaxalone anesthesia can be performed safely in veiled chameleons. Although changes were observed in the complete blood count and biochemistry results, these changes were determined to not be clinically significant. The results of this study demonstrate that antemortem assisted reproductive techniques such as electroejaculation can be safely used repeatedly.
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Konvalina JD, Stanley JW, Trauth SE, Plummer MV. No Sperm Morphometric Differences between Two Populations of Diamond-backed Watersnakes (Nerodia rhombifer) with Varying Resource Availability. COPEIA 2020. [DOI: 10.1643/cg-17-692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- John D. Konvalina
- Department of Biology, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816; . Send reprint requests to this address
| | - Jonathan W. Stanley
- Department of Biological Sciences, Arkansas State University, P.O. Box 599, State University, Arkansas 72467;
| | - Stanley E. Trauth
- Department of Biological Sciences, Arkansas State University (Emeritus), P.O. Box 599, State University, Arkansas 72467;
| | - Michael V. Plummer
- Department of Biology, Harding University (Emeritus), Box 12251, Searcy, Arkansas 72143;
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Lawrence M, Mastromonaco G, Goodrowe K, Santymire R, Waddell W, Schulte-Hostedde A. The effects of inbreeding on sperm morphometry of captive-bred endangered mammals. CAN J ZOOL 2017. [DOI: 10.1139/cjz-2016-0291] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Captive breeding is used for the conservation of endangered species, but inbreeding can result when a small number of founders are used to establish populations. Inbreeding can reduce the proportion of normal sperm in an ejaculate, but may also have effects on sperm size and shape (morphometry). We investigated the effects of inbreeding on sperm morphometry of black-footed ferrets (Mustela nigripes (Audubon and Bachman, 1851)) and red wolves (Canis rufus Audubon and Bachman, 1851) from captive breeding programs to determine if more inbred males produced sperm of poor quality (bulky head, small midpiece, short tail). We measured sperm head length, head width, midpiece length, midpiece width, and tail length on 10 sperm from each male of both species. A negative relationship between variation in sperm tail length and inbreeding coefficient (f) was found in black-footed ferret, suggesting that more inbred individuals will have reduced genetic and phenotypic variation. Analyses indicated a negative relationship between sperm head width and f and a positive relationship between sperm tail length and f in red wolf, suggesting that more inbred male red wolves could have faster sperm. These results indicate that inbreeding affects functionally important aspects of sperm morphometry, but that these effects may not be entirely negative.
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Affiliation(s)
- M. Lawrence
- Department of Biology, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - G. Mastromonaco
- Reproductive Physiology, Toronto Zoo, Scarborough, ON M1B 5K7, Canada
| | - K. Goodrowe
- Point Defiance Zoo and Aquarium, Tacoma, WA 98407, USA
| | - R.M. Santymire
- Davee Center for Epidemiology and Endocrinology, Lincoln Park Zoo, Chicago, IL 60614, USA
| | - W. Waddell
- Point Defiance Zoo and Aquarium, Tacoma, WA 98407, USA
| | - A.I. Schulte-Hostedde
- Department of Biology, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
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Rheubert J, Messak JA, Siegel DS, Gribbins KM, Trauth SE, Sever DM. Inter- and intraspecific variation in sperm morphology of Sceloporus consobrinus and Sceloporus undulatus (Squamata: Phrynosomatidae). Biol J Linn Soc Lond 2017. [DOI: 10.1093/biolinnean/blw043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Silva K, Zogno M, Camillo A, Pereira R, Almeida-Santos S. Annual changes in seminal variables of golden lanchead pitvipers (Bothrops insularis) maintained in captivity. Anim Reprod Sci 2015; 163:144-50. [DOI: 10.1016/j.anireprosci.2015.10.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 10/26/2015] [Accepted: 10/30/2015] [Indexed: 10/22/2022]
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Marshall DJ. Environmentally induced (co)variance in sperm and offspring phenotypes as a source of epigenetic effects. ACTA ACUST UNITED AC 2015; 218:107-13. [PMID: 25568457 DOI: 10.1242/jeb.106427] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Traditionally, it has been assumed that sperm are a vehicle for genes and nothing more. As such, the only source of variance in offspring phenotype via the paternal line has been genetic effects. More recently, however, it has been shown that the phenotype or environment of fathers can affect the phenotype of offspring, challenging traditional theory with implications for evolution, ecology and human in vitro fertilisation. Here, I review sources of non-genetic variation in the sperm phenotype and evidence for co-variation between sperm and offspring phenotypes. I distinguish between two environmental sources of variation in sperm phenotype: the pre-release environment and the post-release environment. Pre-release, sperm phenotypes can vary within species according to male phenotype (e.g. body size) and according to local conditions such as the threat of sperm competition. Post-release, the physicochemical conditions that sperm experience, either when freely spawned or when released into the female reproductive tract, can further filter or modify sperm phenotypes. I find evidence that both pre- and post-release sperm environments can affect offspring phenotype; fertilisation is not a new beginning – rather, the experiences of sperm with the father and upon release can drive variation in the phenotype of the offspring. Interestingly, there was some evidence for co-variation between the stress resistance of sperm and the stress resistance of offspring, though more studies are needed to determine whether such effects are widespread. Overall, it appears that environmentally induced covariation between sperm and offspring phenotypes is non-negligible and further work is needed to determine their prevalence and strength.
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Affiliation(s)
- Dustin J Marshall
- School of Biological Sciences, Monash University, VIC 3800, Australia
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Blengini CS, Sergio N, Gabriela C, Giojalas LC, Margarita C. Variability in sperm form and function in the context of sperm competition risk in two Tupinambis lizards. Ecol Evol 2014; 4:4080-92. [PMID: 25505535 PMCID: PMC4242561 DOI: 10.1002/ece3.1262] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 09/06/2014] [Accepted: 09/09/2014] [Indexed: 12/25/2022] Open
Abstract
In polyandrous species, sperm morphometry and sperm velocity are under strong sexual selection. Although several hypotheses have been proposed to explain the role of sperm competition in sperm trait variation, this aspect is still poorly understood. It has been suggested that an increase in sperm competition pressure could reduce sperm size variation or produce a diversity of sperm to maximize male fertilization success. We aim at elucidating the variability of sperm morphometric traits and velocity in two Tupinambis lizards in the context of sperm competition risk. Sperm traits showed substantial variation at all levels examined: between species, among males within species, and within the ejaculate of individual males. Sperm velocity was found to be positively correlated with flagellum: midpiece ratio, with relatively longer flagella associated with faster sperm. Our results document high variability in sperm form and function in lizards.
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Affiliation(s)
- Cecilia S Blengini
- Laboratorio de Biología del Comportamiento, Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Universidad Nacional de Córdoba Av. Vélez Sársfield 299, X5000JJC, Córdoba, Argentina
| | - Naretto Sergio
- Laboratorio de Biología del Comportamiento, Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Universidad Nacional de Córdoba Av. Vélez Sársfield 299, X5000JJC, Córdoba, Argentina
| | - Cardozo Gabriela
- Laboratorio de Biología del Comportamiento, Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Universidad Nacional de Córdoba Av. Vélez Sársfield 299, X5000JJC, Córdoba, Argentina
| | - Laura C Giojalas
- Centro de Biología Celular y Molecular, Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Investigaciones Biológicas y Tecnológicas (IIByT) CONICET, Universidad Nacional de Córdoba Av.Velez Sarsfield 1611, X5016GCA, Córdoba, Argentina
| | - Chiaraviglio Margarita
- Laboratorio de Biología del Comportamiento, Facultad de Ciencias Exactas, Físicas y Naturales, Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Universidad Nacional de Córdoba Av. Vélez Sársfield 299, X5000JJC, Córdoba, Argentina
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Friesen CR, Squire MK, Mason RT. Intrapopulational variation of ejaculate traits and sperm depletion in red-sided garter snakes. J Zool (1987) 2014. [DOI: 10.1111/jzo.12092] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. R. Friesen
- Department of Zoology; Oregon State University; Corvallis OR USA
| | - M. K. Squire
- Department of Zoology; Oregon State University; Corvallis OR USA
- Department of Biology; Texas A&M University; College Station TX USA
| | - R. T. Mason
- Department of Zoology; Oregon State University; Corvallis OR USA
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ULLER TOBIAS, SCHWARTZ TONIA, KOGLIN TROY, OLSSON MATS. Sperm Storage and Sperm Competition Across Ovarian Cycles in the Dragon Lizard,Ctenophorus fordi. ACTA ACUST UNITED AC 2013; 319:404-8. [DOI: 10.1002/jez.1803] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/21/2013] [Accepted: 04/24/2013] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - TROY KOGLIN
- School of Biological Sciences; University of Wollongong; Wollongong; NSW; Australia
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Wong PBY, Wiley EO, Johnson WE, Ryder OA, O’Brien SJ, Haussler D, Koepfli KP, Houck ML, Perelman P, Mastromonaco G, Bentley AC, Venkatesh B, Zhang YP, Murphy RW. Tissue sampling methods and standards for vertebrate genomics. Gigascience 2012; 1:8. [PMID: 23587255 PMCID: PMC3626508 DOI: 10.1186/2047-217x-1-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Accepted: 07/12/2012] [Indexed: 11/18/2022] Open
Abstract
The recent rise in speed and efficiency of new sequencing technologies have facilitated high-throughput sequencing, assembly and analyses of genomes, advancing ongoing efforts to analyze genetic sequences across major vertebrate groups. Standardized procedures in acquiring high quality DNA and RNA and establishing cell lines from target species will facilitate these initiatives. We provide a legal and methodological guide according to four standards of acquiring and storing tissue for the Genome 10K Project and similar initiatives as follows: four-star (banked tissue/cell cultures, RNA from multiple types of tissue for transcriptomes, and sufficient flash-frozen tissue for 1 mg of DNA, all from a single individual); three-star (RNA as above and frozen tissue for 1 mg of DNA); two-star (frozen tissue for at least 700 μg of DNA); and one-star (ethanol-preserved tissue for 700 μg of DNA or less of mixed quality). At a minimum, all tissues collected for the Genome 10K and other genomic projects should consider each species' natural history and follow institutional and legal requirements. Associated documentation should detail as much information as possible about provenance to ensure representative sampling and subsequent sequencing. Hopefully, the procedures outlined here will not only encourage success in the Genome 10K Project but also inspire the adaptation of standards by other genomic projects, including those involving other biota.
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Affiliation(s)
- Pamela BY Wong
- Department of Ecology and Evolutionary Biology, University of Toronto, 25
Willcocks St., Toronto, Ontario, M5S 3B2, Canada
- Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, 100
Queen`s Park, Toronto, Ontario, M5S 2C6, Canada
| | - Edward O Wiley
- Division of Ichthyology, Biodiversity Institute, University of Kansas, 1345
Jayhawk Boulevard, Lawrence, Kansas, 66045, USA
| | - Warren E Johnson
- Laboratory of Genomic Diversity, National Cancer Institute, 31 Center Drive,
Frederick, Maryland, 21702-1201, USA
| | - Oliver A Ryder
- San Diego Zoo Institute for Conservation Research, 15600 San Pasqual Valley Road,
Escondido, California, 92027, USA
| | - Stephen J O’Brien
- Theodosius Dobzhansky Center for Genome Bioinformatics, St. Petersburg State
University, 8 Viborgskaya Street, St. Petersburg, 194044, Russia
| | - David Haussler
- Center for Biomolecular Science and Engineering, University of California Santa
Cruz, 1156 High Street, Santa Cruz, California, 95064, USA
| | - Klaus-Peter Koepfli
- Laboratory of Genomic Diversity, National Cancer Institute, 31 Center Drive,
Frederick, Maryland, 21702-1201, USA
| | - Marlys L Houck
- San Diego Zoo Institute for Conservation Research, 15600 San Pasqual Valley Road,
Escondido, California, 92027, USA
| | - Polina Perelman
- Laboratory of Animal Cytogenetics, Institute of Molecular and Cellular Biology,
Lavrentiev 10, Novosibirsk, 630090, Russia
| | - Gabriela Mastromonaco
- Reproductive Physiology, Toronto Zoo, 361A Old Finch Avenue, Scarborough, Ontario,
M1B 5K7, Canada
| | - Andrew C Bentley
- Division of Ichthyology, Biodiversity Institute, University of Kansas, 1345
Jayhawk Boulevard, Lawrence, Kansas, 66045, USA
| | - Byrappa Venkatesh
- Comparative Genomics Laboratory, Institute of Molecular and Cell Biology, A*STAR,
Biopolis, Singapore, 138673, Singapore
| | - Ya-ping Zhang
- State Key Laboratory of Genetic Resource and Evolution, Kunming Institute of
Zoology, Chinese Academy of Sciences, 32 Jiaochang Donglu, Kunming, Yunnan,
650223, China
- Laboratory for Conservation and Utilization of Bioresources, Yunnan University, 2
North Cuihu Road, Kunming, Yunnan, 650091, China
| | - Robert W Murphy
- Department of Ecology and Evolutionary Biology, University of Toronto, 25
Willcocks St., Toronto, Ontario, M5S 3B2, Canada
- Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, 100
Queen`s Park, Toronto, Ontario, M5S 2C6, Canada
- State Key Laboratory of Genetic Resource and Evolution, Kunming Institute of
Zoology, Chinese Academy of Sciences, 32 Jiaochang Donglu, Kunming, Yunnan,
650223, China
| | - G10KCOS
- Genome 10 K Community of Scientists. http://www.genome10k.org/, Santa Cruz,
California, USA
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