Morphology of the male reproductive apparatus and sperm ultrastructure of Thaumastocoris peregrinus Carpintero & Dellape 2006 (Heteroptera: Thaumastocoridae)

Micron, Journal Year: 2025, Volume and Issue: 192-193, P. 103811 - 103811

Published: March 7, 2025

Language: Английский

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In Vitro Gene Conservation Status and the Quality of the Genetic Resources of Native Hungarian Sheep Breeds

Veterinary Sciences, Journal Year: 2024, Volume and Issue: 11(8), P. 337 - 337

Published: July 25, 2024

Studies revealed a global loss of genetic resources for local sheep breeds. Therefore, the current study aimed to introduce and highlight progress made on Hungary’s existing gene conservation program (small Gene Bank). Furthermore, we evaluated breed (Tsigai, Cikta, Racka), season, individual variabilities (n = 24) pre-freeze post-thaw semen stored in Bank enhance The samples were cryopreserved manually, spermatozoa analyzed motility (CASA), viability, chromatin structure, morphometry sperm nuclei. Ejaculate volume, concentration, subjective standard motility, kinematic parameters, spermatozoa’s head area deviation differed significantly among breeds (p < 0.05). Season affected ejaculate total number/ejaculate, STR, BCF, ALH. We observed significant 0.001; 0.05) season interaction VCL, LIN, WOB, average perimeter nucleus length (Tsigai Cikta but statistically same as Racka). Similarly, proportion suitable freezing. There was difference parameters viability rams across Tsigai rams. differences many quality parameters. are good quality, with more than 40% having intact membranes low abnormal condensation.

Language: Английский

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Sperm morphology of Tingidae Laporte, 1833 (Miroidea: Cimicomorpha)

Microscopy Research and Technique, Journal Year: 2024, Volume and Issue: 87(6), P. 1384 - 1397

Published: Feb. 21, 2024

Abstract Here, we describe for the first time sperm morphology of Tingidae (Heteroptera). They are small insects presenting lacy patterns on their pronotum and hemielytra exclusively phytophagous, with many economically important species. We studied five species tribe Tingini (Tinginae): Teleonemia scrupulosa , Vatiga illudens Gargaphia lunulata Leptopharsa sp., Corythucha arcuata . Their spermiogenesis process is similar to other Heteroptera, some differences in formation centriole adjunct. This structure extends anteroposterior spermatid axis, flanking nucleus, possibly contributing nucleus remodeling elongation. The mature also that features corroborate group's monophyly. Our data support previous results sister family, Miridae, which exhibits characteristics exclusive this taxon, not present or Heteroptera. relationship genera suggest closer between Overall, study sheds light ultrastructure provides information understanding evolution diversity Research Highlights Heteroptera adjunct derived from a strip pericentriolar material extending Miridae distinguishable using morphology.

Language: Английский

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Morphology of the male reproductive system and sperm of Leptoglossus zonatus (Dallas, 1852) (Heteroptera: Coreidae)

Microscopy Research and Technique, Journal Year: 2024, Volume and Issue: 87(6), P. 1359 - 1372

Published: Feb. 21, 2024

Abstract Taxonomic data on Coreidae have been fragmented over time and need to be revised. Likewise, related the development of germ cells features male reproductive system, including sperm, will contribute understanding biological mechanisms reproduction systematics its representatives. Aiming provide these data, we describe morphology system spermatozoa Leptoglossus zonatus using light transmission electron microscopies, respectively. Each two testes is surrounded by a bright red‐pigmented sheath formed seven follicles arranged side side. The vasa deferentia are filled with individualized especially in their final portion, which dilated curved. After dilation, receive ducts accessory glands mesodermal origin. other unpaired gland ectodermal origin opens into ejaculatory duct. Both glandular types densely coiled lumens secreted material. Testicular contain cysts at different stages spermatogenesis, indicating continuous production gametes throughout adult life. Mature sperm measure around 310 μm long, nucleus 36 flagellum only an axoneme 9 + 2 microtubules symmetrical mitochondrial derivatives. Like Heteroptera, acrosome has single structure (without perforatorium), there no bodies flagella, derivatives connected axonemes, supporting synapomorphic condition characteristics for this suborder bedbugs. Research Highlights slender about length, long. Spermatogenesis occurs life equally testicular follicles. centriole adjunct L. does not give rise bodies. produces filamentous secretion, whereas sac, secretion globular.

Language: Английский

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First report of aberrant sperm in Edessinae and analysis of the male reproductive system of Edessa rufomarginata (De Geer, 1773) (Hemiptera: Pentatomidae)

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(12), P. e0311254 - e0311254

Published: Dec. 12, 2024

Edessinae is one of the ten subfamilies Pentatomidae, and it further divided into seven genera. Among these, Edessa Fabricius, 1803 most diverse genus, boasting around 300 species recognized for their ecological economic significance worldwide. The inclusion various pentatomids in genus has led to mistakes its taxonomy due common morphological features misidentifications. An alternative avoid use datasets characterize classify insects, such as male reproductive system sperm morphology, variability conserved traits within a clade. Thus, we described morphology system, spermatozoa, spermiogenesis rufomarginata (De Geer, 1773) using light microscopy. We discovered that consists pair elongated testes with four follicles each. analysis revealed first time presence dimorphic spermatozoa Edessinae. There are two distinct morphotypes: type I, produced by 1, 2, 3, total length approximately 325 μm nucleus 34 II, follicle 4, measuring 156 73 nucleus, showing an aberrant different from what been Pentatomidae. dimorphism E . not reported any other Pentatomidae date, may contribute establishing taxonomic limits subfamily

Language: Английский

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Eavesdropping on Referential Yellow Warbler Alarm Calls by Red-Winged Blackbirds Is Mediated by Brood Parasitism Risk

Frontiers in Ecology and Evolution, Journal Year: 2021, Volume and Issue: 9

Published: Oct. 5, 2021

Referential alarm calls that denote specific types of dangers are common across diverse vertebrate lineages. Different can indicate a variety threats, which often require actions to evade. Thus, benefit from the call, listeners referential must be able decode signaled threat and respond it in an appropriate manner. Yellow warblers ( Setophaga petechia ) produce “seet” signal conspecifics presence nearby obligate brood parasitic brown-headed cowbirds Molothrus ater ), lay their eggs nests other species, including yellow warblers. Our previous playback experiments have found red-winged blackbirds Agelaius phoeniceus species also parasitized by cowbirds, eavesdrop upon strongly warbler seet during incubation stage breeding with aggression similar responses both cowbird chatters predator calls. To assess whether blackbird vary own risk parasitism, we presented same playbacks nestling (when parasitism is lower than incubation). As predicted, mediated toward chatter warblers’ anti-parasitic parallel low current stage. These results further support flexibly antiparasitic as frontline defense against at nests.

Language: Английский

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Sperm Numbers as a Paternity Guard in a Wild Bird

Cells, Journal Year: 2022, Volume and Issue: 11(2), P. 231 - 231

Published: Jan. 11, 2022

Sperm competition is thought to impose strong selection on males produce competitive ejaculates outcompete rival under mating conditions. Our understanding of how different sperm traits influence fertilization success, however, remains limited, especially in wild populations. Recent literature highlights the importance incorporating multiple ejaculate and pre-copulatory sexually selected analyses aimed at acts traits. However, variation a male's ability gain success may also depend upon range social ecological factors that determine opportunity for events both within outside pair-bond. Here, we test an effect quantity size male reproductive red-back fairy-wren (Malurus melanocephalus) while simultaneously accounting sexual potential socio-ecological correlates success. We found number (i.e., cloacal protuberance volume), but not morphology, was associated with red-backed fairy-wrens. Most notably, large numbers available copulation achieved greater within-pair paternity results suggest use as defensive strategy guard system where there high risk female control copulation. Finally, our work opportunities when examining role determining

Language: Английский

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The impact of diet quality on the velocity, morphology and normality of sperm in the zebra finch Taeniopygia guttata

Journal of Experimental Biology, Journal Year: 2022, Volume and Issue: 225(9)

Published: April 11, 2022

Sperm traits can influence fertilisation success, but there is still much we do not understand about sperm condition dependence, that is, how depend on the male's energy acquisition and allocation. This especially pronounced in avian taxa, despite extensive observational studies sampling wild populations. In this study, collected samples before after experimentally reducing diet quality of wild-derived captive zebra finches small mixed-sex groups, which compared with individuals a control diet. We measured length components (head, midpiece, flagellum total length), proportion normal morphology, were progressively motile swimming velocity (curvilinear velocity; VCL). The only trait found to be impacted by reduced was significant decrease midpiece length. consistent emerging evidence other non-model systems, as well fact alter mitochondrial density structure tissue types. There also over course experiment for both experimental groups (i.e. unrelated diet). largely unchanged morphology emphasizes are important determinants velocity, likely including seminal fluid composition.

Language: Английский

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The size of the sperm head influences the gynogenetic success in teleost fish

Aquaculture, Journal Year: 2024, Volume and Issue: unknown, P. 741768 - 741768

Published: Oct. 1, 2024

Language: Английский

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Sperm swimming speed and morphology differ slightly among the three genetic morphs of ruff sandpiper (Calidris pugnax), but show no clear polymorphism

Frontiers in Ecology and Evolution, Journal Year: 2024, Volume and Issue: 12

Published: Dec. 2, 2024

The ruff sandpiper ( Calidris pugnax ) is a lekking shorebird with three male morphs that differ remarkably in behavior, ornaments, size, and endocrinology. are determined by an autosomal inversion. Aggressive Independents evolved first, female-mimicking Faeders ~4 mil year ago when short segment of chromosome reversed orientation, semi-cooperative Satellites ~70,000 years through recombination the Independent Faeder inversion-segment genotypes. Although genetic differences between affect numerous phenotypic traits, it unknown whether they also sperm traits. Here, we use captive-bred population ruffs to compare other birds swimming speed morphology among morphs. Ruff resembled those passerines, but moved differently. slowest had longest midpiece. Independents’ were neither fastest nor least variable, shortest tail midpiece contains energy-producing mitochondria, its length was not associated speed. Instead, two velocity metrics weakly positively correlated head (absolute relative). We conclude there indication quantitative morphs, no clear polymorphism.

Language: Английский

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