Reproductive biology of the onychophoran Euperipatoides rowelli

Article


Sunnucks, Paul, Curach, Natalie C., Young, Anthony, French, Jordan, Cameron, Ray, Briscoe, Dave A. and Tait, Noel N.. 2000. "Reproductive biology of the onychophoran Euperipatoides rowelli." Journal of Zoology. 250, pp. 447-460. https://doi.org/10.1017/S0952836900004039
Article Title

Reproductive biology of the onychophoran Euperipatoides rowelli

ERA Journal ID2960
Article CategoryArticle
AuthorsSunnucks, Paul, Curach, Natalie C., Young, Anthony, French, Jordan, Cameron, Ray, Briscoe, Dave A. and Tait, Noel N.
Journal TitleJournal of Zoology
Journal Citation250, pp. 447-460
Number of Pages14
YearApr 2000
Place of PublicationUnited Kingdom
ISSN0952-8369
1469-7998
Digital Object Identifier (DOI)https://doi.org/10.1017/S0952836900004039
Web Address (URL)https://zslpublications.onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.2000.tb00788.x
Abstract

The reproductive biology of the ovoviviparous peripatus Euperipatoides rowelli was investigated from field collections and laboratory cultures. The sexes have different demographics. The frequency distribution of individual weight is essentially L-shaped in females, but closer to normality for males: thus the sexes must exhibit different patterns of growth and/or mortality males are generally much smaller and rarer than females. The primary sex ratio seems to be 1:1 with equal investment in the sexes, while the tertiary ratio is highly female-biased. Logs with fewer individuals tend to be male-biased while well-populated logs tend to be female-biased. Males mature at 15-30% of the bodyweight of mature females. The weight frequency distribution of males without developed sperm in their tracts is strongly skewed to the lower weights, while that of males with sperm is more normally distributed, indicating that sperm production occurs as soon in life as possible. Males mature in their first year of life, if growth rates in culture may be extrapolated to the wild. In contrast to this rapid maturity in males, females may mature as late as their second or third years. Most mature females, and many prior to maturity, carry sperm in their spermathecae. After maturity, there is an approximately linear relationship between body mass and number of developing embryos. Reproduction in E rowelli is significantly seasonal despite high individual variance, with a major bout of parturition in November-December (summer). A female can harbour one developed and one undeveloped batch of embryos in each uterus excesses of developed embryos in one uterus are counterbalanced by deficits of undeveloped ones, indicating that females can use their paired reproductive tracts independently. Individual females in culture can experience episodes of parturition approx. 6 months apart without re-mating, thus gestation may be 6 months or more sperm in spermathecae remain capable of vigorous swimming for at least 9.5 months.

KeywordsOnychophora; reproduction; sex ratio; female paternity control; Euperipatoides rowelli
Public Notes

There are no files associated with this item.

Byline AffiliationsMacquarie University
Monash University
Library Services
Permalink -

https://research.usq.edu.au/item/wz95z/reproductive-biology-of-the-onychophoran-euperipatoides-rowelli

  • 19
    total views
  • 0
    total downloads
  • 1
    views this month
  • 0
    downloads this month

Export as

Related outputs

Determining the optimum climate preseason for plant phenology analysis using rubber (Hevea brasiliensis) as a model
Azizan, Fathin Ayuni, Young, Anthony and Aziz, Ammar Abdul. 2022. "Determining the optimum climate preseason for plant phenology analysis using rubber (Hevea brasiliensis) as a model." Remote Sensing Letters. 13 (11), pp. 1121-1130. https://doi.org/10.1080/2150704X.2022.2131477
Whole-Genome Data from Curtobacterium flaccumfaciens pv. flaccumfaciens Strains Associated with Tan Spot of Mungbean and Soybean Reveal Diverse Plasmid Profiles
Vaghefi, Niloofar, Adorada, Dante L., Huth, Lauren, Kelly, Lisa A., Poudel, Barsha, Young, Anthony and Sparks, Adam H.. 2021. "Whole-Genome Data from Curtobacterium flaccumfaciens pv. flaccumfaciens Strains Associated with Tan Spot of Mungbean and Soybean Reveal Diverse Plasmid Profiles." Molecular Plant-Microbe Interactions. 34 (10), pp. 1216-1222. https://doi.org/10.1094/MPMI-05-21-0116-A
Using Multi-Temporal Satellite Data to Analyse Phenological Responses of Rubber (Hevea brasiliensis) to Climatic Variations in South Sumatra, Indonesia
Azizan, Fathin Ayuni, Astuti, Ike Sari, Aditya, Mohammad Irvan, Febbiyanti, Tri Rapani, Williams, A., Young, Anthony and Aziz, Ammar Abdul. 2021. "Using Multi-Temporal Satellite Data to Analyse Phenological Responses of Rubber (Hevea brasiliensis) to Climatic Variations in South Sumatra, Indonesia." Remote Sensing. 13 (15), pp. 1-23. https://doi.org/10.3390/rs13152932
Kinetics of slow release of nitrogen fertiliser from multi-layered nanofibrous structures
Javazmi, Leila, Young, Anthony, Ash, Gavin J. and Low, Tobias. 2021. "Kinetics of slow release of nitrogen fertiliser from multi-layered nanofibrous structures." Scientific Reports. 11, pp. 1-9. https://doi.org/10.1038/s41598-021-84460-x
Australia: A Continent Without Native Powdery Mildews? The First Comprehensive Catalog Indicates Recent Introductions and Multiple Host Range Expansion Events, and Leads to the Re-discovery of Salmonomyces as a New Lineage of the Erysiphales
Kiss, Levente, Vaghefi, Niloofar, Bransgrove, Kaylene, Dearnaley, John D. W., Takamatsu, Susumu, Tan, Yu Pei, Marston, Craig, Liu, Shu-Yan, Jin, Dan-Ni, Adorada, Dante L., Bailey, Jordan, Cabrera de Alvarez, Maria Graciela, Daly, Andrew, Dirchwolf, Pamela Maia, Jones, Lynne, Nguyen, Thuan Dat, Edwards, Jacqueline, Ho, Wellcome, Kelly, Lisa, ..., Braun, Uwe. 2020. "Australia: A Continent Without Native Powdery Mildews? The First Comprehensive Catalog Indicates Recent Introductions and Multiple Host Range Expansion Events, and Leads to the Re-discovery of Salmonomyces as a New Lineage of the Erysiphales." Frontiers in Microbiology. 11, pp. 1-31. https://doi.org/10.3389/fmicb.2020.01571
Investigation of slow release of urea from biodegradable single- and double-layered hollow nanofibre yarns
Javazmi, Leila, Low, Tobias, Ash, Gavin and Young, Anthony. 2020. "Investigation of slow release of urea from biodegradable single- and double-layered hollow nanofibre yarns." Scientific Reports. 10 (1). https://doi.org/10.1038/s41598-020-76395-6
Effect of various urea concentrations on nitrogen slow release from PLLA nanofiber mat
Javazmi, Leila, Low, Tobias, Young, Anthony and Ash, Gavin. 2020. "Effect of various urea concentrations on nitrogen slow release from PLLA nanofiber mat." 8th International Conference on Nanoscience and Nanotechnology (ICONN 2020). Brisbane, Australia 09 - 13 Feb 2020 Brisbane, Australia.
Characterising the genotypic diversity of Curtobacterium flaccumfaciens pv. Flaccumfaciens, the cause of tan spot on mungbean
Vaghefi, Niloofar, Adorada, Dante, Adorada, Encarnacion, Kelly, Lisa, Young, Anthony and Sparks, Adam. 2019. "Characterising the genotypic diversity of Curtobacterium flaccumfaciens pv. Flaccumfaciens, the cause of tan spot on mungbean." 2019 Australian Summer Grains Conference: Enduring Farm Profitability (ASCG 2019). Gold Coast, Australia 08 - 10 Jul 2019
What can we learn from population genomics studies of Curtobacterium flaccumfaciens pv. flaccumfaciens, the cause of tan spot on mungbean?
Vaghefi, N., Adorada, D., Adorada, E., Kelly, L., Young, A. and Sparks, A.. 2019. "What can we learn from population genomics studies of Curtobacterium flaccumfaciens pv. flaccumfaciens, the cause of tan spot on mungbean?" 22nd Biennial Australasian Plant Pathology Society Conference (APPS 2019): Strong Foundations, Future Innovations. Melbourne, Australia 25 - 28 Nov 2019
Encapsulation of flutriafol fungicide into electrospun biodegredable poly (L-lactide) nanofibers
Javazmi, Leila, Low, Tobias, Ash, Gavin and Young, Anthony. 2018. "Encapsulation of flutriafol fungicide into electrospun biodegredable poly (L-lactide) nanofibers." 2018 Applied Nanotechnology and Nanoscience International Conference (ANNIC 2018). Berlin, Germany 22 - 24 Oct 2018
Pressurised dewatering of sugarcane press mud for logistical transport efficiency and industrial reuse
Wieck, T., Bennett, J.McL., Redmond, T.W. and Young, A.. 2019. "Pressurised dewatering of sugarcane press mud for logistical transport efficiency and industrial reuse." Sugar Tech: an international journal of sugar crops and related industries. 21 (2), pp. 235-243. https://doi.org/10.1007/s12355-018-0621-3
Improved RSD management in Harwood leads to record yields
Young, Anthony. 2017. "Improved RSD management in Harwood leads to record yields." 39th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2017). Cairns, Australia 03 - 05 May 2017 Mackay, Australia.
Fungal planet description sheets: 69-91
Crous, P. W., Groenewald, J. Z., Shivas, R. G., Edwards, J., Seifert, K. A., Alfenas, A. C., Alfenas, R. F., Burgess, T. I., Carnegie, A. J., Hardy, G. E. St J., Quaedvlieg, W., Young, A. J., McTaggart, A. R., Pascoe, I. G., Porter, I. J., Louis-Seize, G., Pereira, O. L., Hüberli, D., Jung, T., ..., White, G. P.. 2011. "Fungal planet description sheets: 69-91." Persoonia. 26, pp. 108-156. https://doi.org/10.3767/003158511X581723
The effect of protein supplied in the growth medium on plant pathogen resistance
Lonhienne, Thierry G. A., Trusov, Yuri, Young, Anthony, Schmidt, Susanne and Paungfoo-Lonhienne, Chanyarat. 2014. "The effect of protein supplied in the growth medium on plant pathogen resistance." Plant Signaling and Behavior. 9 (10). https://doi.org/10.4161/15592324.2014.976159
Effects of externally supplied protein on root morphology and biomass allocation in Arabidopsis
Lonhienne, Thierry G. A., Trusov, Yuri, Young, Anthony, Rentsch, Doris, Nasholm, Torgny, Schmidt, Susanne and Paungfoo-Lonhienne, Chanyarat. 2014. "Effects of externally supplied protein on root morphology and biomass allocation in Arabidopsis." Scientific Reports. 4, pp. 1-8. https://doi.org/10.1038/srep05055
Molecular detection of diverse Leifsonia strains associated with sugarcane
Young, Anthony J. and Nock, Catherine J.. 2017. "Molecular detection of diverse Leifsonia strains associated with sugarcane." Plant Disease: an international journal of applied plant pathology. 101 (8), pp. 1422-1431. https://doi.org/10.1094/PDIS-01-17-0016-RE
Generating and assessing chlorotic streak disease (CSD) ratings for twenty sugarcane varieties grown at Harwood
Young, Anthony, Davis, Wayne and Lokes, Steve. 2013. "Generating and assessing chlorotic streak disease (CSD) ratings for twenty sugarcane varieties grown at Harwood." Bruce, R. C. (ed.) 35th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2013). Townsville, Australia 16 - 18 Apr 2013 Mackay, Australia.
Efficient diagnosis of ratoon stunting disease of sugarcane by quantitative PCR on pooled leaf sheath biopsies
Young, Anthony J., Kawamata, Asuka, Ensbey, Mark A., Lambley, Eleanore and Nock, Catherine J.. 2016. "Efficient diagnosis of ratoon stunting disease of sugarcane by quantitative PCR on pooled leaf sheath biopsies." Plant Disease: an international journal of applied plant pathology. 100 (12), pp. 2492-2498. https://doi.org/10.1094/PDIS-06-16-0848-RE
Possible origin of ratoon stunting disease following interspecific hybridization of Saccharum species
Young, A. J.. 2016. "Possible origin of ratoon stunting disease following interspecific hybridization of Saccharum species." Plant Pathology. 65 (9), pp. 1403-1410. https://doi.org/10.1111/ppa.12545
Seedbed inspections underestimate the overall incidence of ratoon stunting disease
Young, Anthony. 2016. "Seedbed inspections underestimate the overall incidence of ratoon stunting disease." International Sugar Journal: a technical and commercial periodical devoted entirely to the sugar and sweetener industry. 118 (1413), pp. 254-258.
Insights into the epidemiology of chlorotic streak disease as determined by multiple field assessments
Young, Anthony and Ensbey, Mark. 2016. "Insights into the epidemiology of chlorotic streak disease as determined by multiple field assessments." International Sugar Journal: a technical and commercial periodical devoted entirely to the sugar and sweetener industry. 118 (March), pp. 216-220.
Ramichloridium spp. on Musa in northern Queensland: introducing Ramichloridium ducassei sp. nov. on leaf streaks of Ducasse banana
Shivas, R. G., Grice, K. R. E. and Young, A. J.. 2011. "Ramichloridium spp. on Musa in northern Queensland: introducing Ramichloridium ducassei sp. nov. on leaf streaks of Ducasse banana." Australasian Plant Pathology. 40 (1), pp. 61-65. https://doi.org/10.1007/s13313-010-0014-x
Insights into the epidemiology of chlorotic streak disease as determined by multiple field assessments
Young, Anthony and Ensbey, Mark. 2015. "Insights into the epidemiology of chlorotic streak disease as determined by multiple field assessments." Bruce, R. C. (ed.) 37th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2015). Bundaberg, Australia 28 - 30 Apr 2015 Mackay, Australia.
Novel diagnostic method for ratoon stunting disease: development and implications for RSD management
Young, Anthony J., Nock, Catherine J., Martin, Aimee and Ensbey, Mark. 2014. "Novel diagnostic method for ratoon stunting disease: development and implications for RSD management." Bruce, R. C. (ed.) 36th Annual Conference of the Australian Society of Sugar Cane Technologists (AASCT 2014). Gold Coast, Australia 29 Apr - 01 May 2014 Mackay, Australia.
Reassessing RSD: insights from Harwood
Young, Anthony, Lokes, Steve, Davis, Wayne and Aitken, Bob. 2012. "Reassessing RSD: insights from Harwood." Bruce, R. C. (ed.) 34th Annual Conference of the Australian Society of Sugar Cane Technologists (ASSCT 2012). Palm Cove, Australia 01 - 04 May 2012 Mackay, Australia.
Outbreak of angular leaf spot, caused by Xanthomonas fragariae, in a Queensland strawberry germplasm collection
Young, Anthony J., Marney, Thomas S., Herrington, Mark, Hutton, Don, Gomez, Apollo O., Villiers, Adam, Campbell, Paul R. and Geering, Andrew D. W.. 2011. "Outbreak of angular leaf spot, caused by Xanthomonas fragariae, in a Queensland strawberry germplasm collection." Australasian Plant Pathology. 40 (3), pp. 286-292. https://doi.org/10.1007/s13313-011-0045-y
Stem cankers on sunflower (Helianthus annuus) in Australia reveal a complex of pathogenic Diaporthe (Phomopsis) species
Thompson, S. M., Tan, Y. P., Young, A. J., Neate, S. M., Aitken, E. A. B. and Shivas, R. G.. 2011. "Stem cankers on sunflower (Helianthus annuus) in Australia reveal a complex of pathogenic Diaporthe (Phomopsis) species." Persoonia. 27, pp. 80-89. https://doi.org/10.3767/003158511X617110