Podrobný výpis o publikaci

DYKOVÁ, Iva, Jakub ŽÁK, Radim BLAŽEK, Holger ZIMMERMANN, Matej POLAČIK, Veronika BARTÁKOVÁ a Martin REICHARD. Oogenesis, spermatogenesis and spermiation structures in Lake Tanganyika Synodontis species (Mochokidae, Telostei: Siluriformes). Journal of Vertebrate Biology. Institute of Vertebrate Biology, Czech Academy of Sciences, 2024, roč. 73, č. 24023, s. 1-32. ISSN 2694-7684. Dostupné z: https://dx.doi.org/10.25225/jvb.24023.

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TY  - JOUR
ID  - 2402200
AU  - Dyková, Iva - Žák, Jakub - Blažek, Radim - Zimmermann, Holger - Polačik, Matej - Bartáková, Veronika - Reichard, Martin
PY  - 2024
TI  - Oogenesis, spermatogenesis and spermiation structures in Lake Tanganyika Synodontis species (Mochokidae, Telostei: Siluriformes)
JF  - Journal of Vertebrate Biology
VL  - 73
IS  - 24023
SP  - 1-32
EP  - 1-32
PB  - Institute of Vertebrate Biology, Czech Academy of Sciences
SN  - 26947684
KW  - cuckoo catfish
KW  - gonad histology
KW  - ovaries
KW  - testes
UR  - https://doi.org/10.25225/jvb.24023
N2  - Synodontis catfishes in Lake Tanganyika have undergone a modest radiation, with differences among species in reproductive strategies, including one species that has evolved to be an obligate brood parasite. Here, we provide insights into the reproductive traits and histology of male and female reproductive organs of five Lake Tanganyika Synodontis species (S. irsacae, S. melanostictus, S. multipunctatus, S. petricola and S. polli). We describe the structures employed in oogenesis, spermiogenesis and spermiation. We show that the shape and size of the urogenital papilla is a valuable trait for sex determination in all species except S. polli, where the imprecision reached > 20 %. From a histological perspective, the inter-specific structural differences associated with the type of reproductive strategy were not found in the ovaries. However, testicular histology indicated variations in spermiation structures among species, namely in S. multipunctatus and S. irsacae. The differences identified may be related to variation in reproductive strategies among species. In particular, weaker eosinophily of testicular secretions was found in S. multipunctatus than in other species, suggesting the possibility of a different composition. Experimental manipulation of environmental and hormonal stimuli represents a promising direction for further research into the structural and functional diversity of male gonads in Synodontis species from Lake Tanganyika.
ER  -

Základní údaje
Originální název	Oogenesis, spermatogenesis and spermiation structures in Lake Tanganyika Synodontis species (Mochokidae, Telostei: Siluriformes)
Autoři	DYKOVÁ, Iva (203 Česká republika, garant, domácí), Jakub ŽÁK (203 Česká republika, domácí), Radim BLAŽEK (203 Česká republika, domácí), Holger ZIMMERMANN, Matej POLAČIK, Veronika BARTÁKOVÁ a Martin REICHARD (203 Česká republika, domácí).
Vydání	Journal of Vertebrate Biology, Institute of Vertebrate Biology, Czech Academy of Sciences, 2024, 2694-7684.

Další údaje
Originální jazyk	angličtina
Typ výsledku	Článek v odborném periodiku
Obor	10613 Zoology
Stát vydavatele	Česká republika
Utajení	není předmětem státního či obchodního tajemství
WWW	URL
Impakt faktor	Impact factor: 1.500 v roce 2022
Organizační jednotka	Přírodovědecká fakulta
Doi	http://dx.doi.org/10.25225/jvb.24023
UT WoS	001209054100001
Klíčová slova anglicky	cuckoo catfish; gonad histology; ovaries; testes
Štítky	rivok
Příznaky	Mezinárodní význam, Recenzováno
Změnil	Změnila: Mgr. Marie Šípková, DiS., učo 437722. Změněno: 24. 5. 2024 08:41.

Anotace
Synodontis catfishes in Lake Tanganyika have undergone a modest radiation, with differences among species in reproductive strategies, including one species that has evolved to be an obligate brood parasite. Here, we provide insights into the reproductive traits and histology of male and female reproductive organs of five Lake Tanganyika Synodontis species (S. irsacae, S. melanostictus, S. multipunctatus, S. petricola and S. polli). We describe the structures employed in oogenesis, spermiogenesis and spermiation. We show that the shape and size of the urogenital papilla is a valuable trait for sex determination in all species except S. polli, where the imprecision reached > 20 %. From a histological perspective, the inter-specific structural differences associated with the type of reproductive strategy were not found in the ovaries. However, testicular histology indicated variations in spermiation structures among species, namely in S. multipunctatus and S. irsacae. The differences identified may be related to variation in reproductive strategies among species. In particular, weaker eosinophily of testicular secretions was found in S. multipunctatus than in other species, suggesting the possibility of a different composition. Experimental manipulation of environmental and hormonal stimuli represents a promising direction for further research into the structural and functional diversity of male gonads in Synodontis species from Lake Tanganyika.

Anotace

Synodontis catfishes in Lake Tanganyika have undergone a modest radiation, with differences among species in reproductive strategies, including one species that has evolved to be an obligate brood parasite. Here, we provide insights into the reproductive traits and histology of male and female reproductive organs of five Lake Tanganyika Synodontis species (S. irsacae, S. melanostictus, S. multipunctatus, S. petricola and S. polli). We describe the structures employed in oogenesis, spermiogenesis and spermiation. We show that the shape and size of the urogenital papilla is a valuable trait for sex determination in all species except S. polli, where the imprecision reached > 20 %. From a histological perspective, the inter-specific structural differences associated with the type of reproductive strategy were not found in the ovaries. However, testicular histology indicated variations in spermiation structures among species, namely in S. multipunctatus and S. irsacae. The differences identified may be related to variation in reproductive strategies among species. In particular, weaker eosinophily of testicular secretions was found in S. multipunctatus than in other species, suggesting the possibility of a different composition. Experimental manipulation of environmental and hormonal stimuli represents a promising direction for further research into the structural and functional diversity of male gonads in Synodontis species from Lake Tanganyika.