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Paulo MDS, Rezende PH, Dias G, Lino-Neto J. Morphology of the male reproductive system and sperm of Leptoglossus zonatus (Dallas, 1852) (Heteroptera: Coreidae). Microsc Res Tech 2024; 87:1359-1372. [PMID: 38380559 DOI: 10.1002/jemt.24520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 12/14/2023] [Accepted: 02/06/2024] [Indexed: 02/22/2024]
Abstract
Taxonomic data on Coreidae have been fragmented over time and need to be revised. Likewise, data related to the development of germ cells and the features of the male reproductive system, including sperm, will contribute to understanding the biological mechanisms of reproduction and the systematics of its representatives. Aiming to provide these data, we describe the morphology of the male reproductive system and spermatozoa of Leptoglossus zonatus using light and transmission electron microscopies, respectively. Each of the two testes is surrounded by a bright red-pigmented sheath and formed by seven follicles arranged side by side. The two vasa deferentia are filled with individualized sperm, especially in their final portion, which is dilated and curved. After dilation, the vasa deferentia receive the ducts of the accessory glands of mesodermal origin. The other unpaired accessory gland is of ectodermal origin and opens into the ejaculatory duct. Both glandular types are densely coiled and have lumens filled with secreted material. Testicular follicles contain cysts with germ cells at different stages of spermatogenesis, indicating continuous production of gametes throughout adult life. Mature sperm measure around 310 μm long, with a nucleus of 36 μm and a flagellum formed only by an axoneme of 9 + 9 + 2 microtubules and two symmetrical mitochondrial derivatives. Like the sperm of other Heteroptera, the acrosome has a single structure (without perforatorium), there are no accessory bodies in the flagella, and the mitochondrial derivatives are connected to the axonemes, supporting the synapomorphic condition of these characteristics for this suborder of bedbugs. RESEARCH HIGHLIGHTS: The Leptoglossus zonatus sperm are slender and long, about 310 μm in length, and a nucleus 36 μm long. Spermatogenesis occurs throughout adult life and equally in the seven testicular follicles. The centriole adjunct in L. zonatus sperm does not give rise to accessory bodies. The ectodermal gland produces a filamentous secretion, whereas in the ectodermal sac, the secretion is globular.
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Affiliation(s)
- Mauricio da Silva Paulo
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Paulo Henrique Rezende
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Glenda Dias
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - José Lino-Neto
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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Bordin RO, Dos Santos Fernandes CE, Franco-Belussi L, Ribeiro Farias Leão T, Sanabria M. Sperm morphology and testicular histology of the polyandric species Leptodactylus podicipinus (Anura: Leptodactylidae) from an urban environment. Anat Rec (Hoboken) 2022; 305:3532-3542. [PMID: 35365960 DOI: 10.1002/ar.24928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/15/2022] [Accepted: 03/15/2022] [Indexed: 11/11/2022]
Abstract
Anurans have a high reproductive diversity, which is closely associated with testicular dynamics and sperm production. This variety in reproduction is modulated by the sexual characteristics of reproductive strategies, such as polyandry. Leptodactylus podicipinus has high reproductive plasticity, wide geographical distribution, and polyandric behavior. Although aspects of the testes and sperm of this species are known, knowledge about the relationship between these aspects and reproductive investment is scarce. The present study evaluated the morphological characteristics of the testes and sperm in an urban environment. We used 11 sexually mature males from the city of Campo Grande, Mato Grosso do Sul, Brazil. The specimens were obtained from night excursions between April and September; the months that constitute the post-rainy season. The biometric data (snout-vent length, testes, and body mass) were associated with sperm parameters (length of the spermatozoon head and tail). Stereological analyses of sperm morphology and the testes were performed. The results showed correlations between testis mass and spermatozoon length, which were positively related to head length and negatively related to tail length. The locular area and tail length were also negatively correlated. The percentage of normal spermatozoa was 97%; however, some sperm heads and tails exhibited different morphologies from the pattern described for the species. The germinative structure comprised more than 50% of the locular area composed of spermatozoa. The results of this study contribute to the knowledge of aspects related to the reproductive biology of L. podicipinus obtained from an urban environment.
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Affiliation(s)
- Rafael Oliveira Bordin
- Programa de pós graduação em Biologia Animal, Universidade Federal de Mato Grosso do Sul, 79070-900, Campo Grande, MS, Brasil
| | - Carlos Eurico Dos Santos Fernandes
- Laboratório de Patologia Experimental (LAPEx), Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brasil
| | - Lilian Franco-Belussi
- Laboratório de Patologia Experimental (LAPEx), Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brasil
| | - Taynara Ribeiro Farias Leão
- Programa de pós graduação em Biodiversidade, Universidade Estadual Paulista, São José do Rio Preto, SP, Brasil
| | - Marciana Sanabria
- Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, 79070-900, Campo Grande, Brasil
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Yang Y, Li Y, Wang Y, Hu J, Zhang M, Sun Y, Gu W, Zhang Y, Sun J, Jacques KJ, Xu S. The ultrastructure of spermatogenic cells and morphological evaluation of testicular development in the silver pomfret (Pampus argenteus). Anat Histol Embryol 2021; 50:1034-1042. [PMID: 34655102 DOI: 10.1111/ahe.12747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 08/31/2021] [Accepted: 09/24/2021] [Indexed: 11/28/2022]
Abstract
The silver pomfret (Pampus argenteus) is a widely distributed and economically important marine fish in the Indo-Pacific. In this study, we acquired the second generation of wild P. argenteus by artificial breeding and further studied the testicular development and ultrastructure of spermatogenesis. The results of gonadosomatic index (GSI) showed the spawning period of this marine fish was from April to June. Besides, through morphological analysis, we found that P. argenteus had an anastomosing tubular testis surrounded by a layer of tunica albuginea, in which spermatogenesis occurred in cysts where the synchronous germ cells were completely surrounded by the cytoplasmic projection of Sertoli cells. Meanwhile, based on submicroscopic characteristics, the germ cells are classified into nine different types. During the ontogenesis of testis, both the early stage of spermatogenesis and sperm were observed in P. argenteus. At sperm maturation stage, different types of spermatozoa and activation of sperms occurred non-synchronously in the tubules. Cytoplasmic bridges also were observed among synchronous germ cells within the cysts, suggesting an interrelated and differentiated relationship among these germ cells.
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Affiliation(s)
- Yang Yang
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Yaya Li
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Yajun Wang
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Jiabao Hu
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Man Zhang
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Yibo Sun
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Weiwei Gu
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Youyi Zhang
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Jiachu Sun
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Kimran Jean Jacques
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
| | - Shanliang Xu
- College of Marine Science, Ningbo University, Ningbo, China.,Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.,Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, China.,Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China
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Udoumoh AF, Igwebuike UM, Okoye CN, Ugwu UM, Oguejiofor CF. Assessment of age-related morphological changes in the testes of post-hatch light ecotype Nigerian indigenous chicken. Anat Histol Embryol 2020; 50:459-466. [PMID: 33368654 DOI: 10.1111/ahe.12649] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 11/09/2020] [Accepted: 12/11/2020] [Indexed: 11/28/2022]
Abstract
The age-related morphological changes of the testes in light ecotype Nigerian indigenous chicken were evaluated in this study using gross anatomical, histological and histomorphometric techniques. The results showed that the testes of 3- to 9-month-old birds were light pink while testes of sexually mature chicken were creamy white in colour. The left and right testicular weight, length, diameter, circumference and the organosomatic indices increased significantly (p < .05) with increasing age across the groups. Although the mean tubular diameter and epithelial height of the left and right seminiferous tubules increased significantly (p < .05) with age, the tubular diameter, epithelial height and luminal diameter did not vary significantly (p > .05) between the left and right testes of all the groups. The one-cell layer thick germinal epithelium of the left testes at 3 to 6 months old showed islands of cell proliferation that contained spermatogonia and spermatocytes. At 6 to 9 months, the left testes exhibited numerous early spermatids with occasional occurrence of late stage spermatids while the right testes showed scanty early stage spermatids. At 12 to 18 months, the germinal epithelia of both left and right testes were characterized by the presence of Sertoli cells, spermatogonia, primary spermatocytes, numerous early and late stage spermatids as well as spermatozoa. In conclusion, the morphological features highlighted in the present study show that at pre-pubertal periods, the left testes may develop faster than the right testes. However, both left and right testes may participate actively in the production of spermatozoa during the post-pubertal life.
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Affiliation(s)
- Anietie Francis Udoumoh
- Department of Veterinary Anatomy. Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
| | | | - Chidozie Nwabuisi Okoye
- Department of Veterinary Obstetrics and Reproductive Diseases, Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
| | - Ugochukwu Michael Ugwu
- Department of Veterinary Anatomy. Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
| | - Chike Fidelis Oguejiofor
- Department of Veterinary Obstetrics and Reproductive Diseases, Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria
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Miyaso H, Nagahori K, Takano K, Omotehara T, Kawata S, Li ZL, Kuramasu M, Wu X, Ogawa Y, Itoh M. Neonatal maternal separation causes decreased numbers of sertoli cell, spermatogenic cells, and sperm in mice. Toxicol Mech Methods 2020; 31:116-125. [PMID: 33100103 DOI: 10.1080/15376516.2020.1841865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neonatal maternal separation is an experimental model used to evaluate the effects of toxic stress in neonates, or early life stress. Although various physiological and psychological stresses during childhood have been reported, the effects of neonatal maternal separation on the male reproductive system remain unclear. Therefore, the present study evaluated the effects of neonatal maternal separation on the male reproductive system. In neonatal male ICR mice, maternal separation was performed for 0.5, 1, 2, and 4 hours/day, from postnatal day 1 to 10. At 10 weeks of age, the neonatal maternal separation mice exhibited decreases in both testicular weight and epididymal sperm number, along with various testicular morphological changes involving germ cells, Sertoli cells, and interstitial cells. Notably, neonatal maternal separation mice showed decreased numbers of Sertoli cells. Animals subjected to 0.5-, 1-, and 2-h/day neonatal maternal separation exhibited decreases in serum levels of testosterone but not in those of gonadotropin (luteinizing hormone and follicle-stimulating hormone). Together, these data showed that neonatal maternal separation in male mice causes decreased Sertoli cell numbers following puberty, resulting in subsequent decreased spermatogenic activity.
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Affiliation(s)
- Hidenobu Miyaso
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Kaiya Takano
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | | | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Miyuki Kuramasu
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Xi Wu
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Yuki Ogawa
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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