Seasonal and Morphological Variations of Brown Trout (Salmo truttaf.fario) Kidney Peroxisomes: A Stereological Study

AbstractLiterature about fish kidney peroxisomes is scarce. To tackle this caveat, a stereological approach on renal peroxisome morphological parameters was performed for the first time in a fish, establishing correlations with maturation stages as it was previously done in brown trout liver. Three-year-old brown trout males and females were collected at the major seasons of their reproductive cycle. Trunk kidney was fixed and processed for catalase cytochemistry. Classical stereological methods were applied to electromicrographs to quantitate morphological parameters. Different seasonal variation patterns were observed between genders, and between renal proximal tubule segments I and II. In males, peroxisomes from proximal tubule segment II had a relatively higher volume and number in May, being individually bigger in February. Females presented similar trends, though with less marked variations. Overall, males and females did not show exactly the same seasonal patterns for most peroxisomal parameters, and no correlations were found between the latter and the gonado-somatic index (GSI). Hence, and despite the variations, the morphology of renal peroxisomes is not strictly correlated with gonad maturation kinetics, therefore suggesting that kidney peroxisome morphology is not seasonally modulated by sex steroids, like estradiol, as it seems to happen in liver peroxisomes.

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Kematangan gonad dan tipe pemijahan ikan lais, Ompok miostoma (Vaillant, 1902) di Daerah Aliran Sungai Mahakam Kalimantan Timur

Jurnal Iktiologi Indonesia ◽

10.32491/jii.v17i2.359 ◽

2018 ◽

Vol 17 (2) ◽

pp. 201

Author(s):

Jusmaldi Jusmaldi ◽

Dedy Duryadi Solihin ◽

Ridwan Affandi ◽

M F Rahardjo ◽

Rudhy Gustiano

Keyword(s):

Endemic Species ◽

Egg Size ◽

Histologic Examination ◽

Gonad Maturation ◽

Gonad Maturity ◽

Maturity Stages ◽

East Kalimantan ◽

Maturation Stages ◽

Examination Methods ◽

Males And Females

Silurid catfishes O. miostoma (Vaillant, 1902) is an endemic species in Mahakam Watershed East Kalimantan. Biology reproduction aspect of this species is not yet known. The purpose of this study was to determine the stages of gonad maturation characteristics, egg size, and spawning type. Fish sampling conducted monthly from November 2013 to Oc-tober 2014, using many gears at four locations in Mahakam Watershed, i.e: Semayang Lake, Belayan River, Siran River and Tering River. To determine the stages of gonad maturation in silurid catfishes were carried out by morphologic and histologic examination methods. Spawning fish type was determined based on the distribution of eggs diameter. The results of this research showed that there are five gonad maturation stages of males and females of silurid catfishes. Dis-tribution of eggs diameter in gonad maturity stages ranges from 0.54 – 1.30 mm with simultaneous spawning type.AbstrakIkan lais O. miostoma (Vaillant 1902) adalah spesies ikan endemik di Daerah Aliran Sungai (DAS) Mahakam Kaliman-tan Timur. Aspek biologi reproduksi ikan ini belum pernah diketahui. Penelitian ini bertujuan untuk menentukan karak-teristik tahap kematangan gonad, ukuran telur, dan tipe pemijahan. Pengambilan contoh ikan dilakukan setiap bulan, dari bulan November 2013 sampai Oktober 2014 menggunakan berbagai jenis alat tangkap pada empat lokasi penelitian di DAS Mahakam yang meliputi: Danau Semayang, Sungai Belayan, Sungai Siran, dan Sungai Tering. Penentuan ting-kat kematangan gonad ikan lais dilakukan dengan metode pemeriksaan morfologis dan histologis. Tipe pemijahan ikan lais ditentukan berdasarkan sebaran diameter telur. Hasil penelitian menunjukkan ada lima tahap kematangan gonad jantan dan betina ikan lais. Sebaran diameter telur pada tahap matang gonad berkisar dari 0,54 - 1,30 mm dengan tipe pemijahan serempak.

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Phosphatidylserine-Gold Nanoparticles (PS-AuNP) Induce Prostate and Breast Cancer Cell Apoptosis

Pharmaceutics ◽

10.3390/pharmaceutics13071094 ◽

2021 ◽

Vol 13 (7) ◽

pp. 1094

Author(s):

Allan Radaic ◽

Nam E. Joo ◽

Soo-Hwan Jeong ◽

Seong-II Yoo ◽

Nicholas Kotov ◽

...

Keyword(s):

Breast Cancer ◽

Gold Nanoparticles ◽

Biomedical Applications ◽

Therapeutic Potential ◽

Control Treatment ◽

Track Record ◽

Males And Females ◽

Breast And Prostate Cancer ◽

First Time

Prostate and breast cancer are the current leading causes of new cancer cases in males and females, respectively. Phosphatidylserine (PS) is an essential lipid that mediates macrophage efferocytosis and is dysregulated in tumors. Therefore, developing therapies that selectively restore PS may be a potential therapeutic approach for carcinogenesis. Among the nanomedicine strategies for delivering PS, biocompatible gold nanoparticles (AuNPs) have an extensive track record in biomedical applications. In this study, we synthesized biomimetic phosphatidylserine-caped gold nanoparticles (PS-AuNPs) and tested their anticancer potential in breast and prostate cancer cells in vitro. We found that both cell lines exhibited changes in cell morphology indicative of apoptosis. After evaluating for histone-associated DNA fragments, a hallmark of apoptosis, we found significant increases in DNA fragmentation upon PS-AuNP treatment compared to the control treatment. These findings demonstrate the use of phosphatidylserine coupled with gold nanoparticles as a potential treatment for prostate and breast cancer. To the best of our knowledge, this is the first time that a phosphatidylserine-capped AuNP has been examined for its therapeutic potential in cancer therapy.

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A review of the Sarcophaga (Heteronychia) (Diptera: Sarcophagidae) of Sardinia

Zootaxa ◽

10.11646/zootaxa.2318.1.24 ◽

2009 ◽

Vol 2318 (1) ◽

pp. 566-588 ◽

Cited By ~ 6

Author(s):

DANIEL WHITMORE

Keyword(s):

Canary Islands ◽

North Africa ◽

Junior Synonym ◽

Arthropod Diversity ◽

Italian Regions ◽

Males And Females ◽

First Time

An account is given of the species of Sarcophaga Meigen, 1826 subgenus Heteronychia Brauer & Bergenstamm, 1889 known from the island of Sardinia (Italy). Most of the nearly 1,400 specimens examined were collected in the SW part of the island during 2003–2006 as part of a project investigating the arthropod diversity of the Monti Marganai and Montimannu areas (respectively Carbonia-Iglesias and Medio Campidano provinces). The study resulted in the finding of eight species of Heteronychia, six of which are recorded from Sardinia for the first time. Sarcophaga (Heteronychia) penicillata Villeneuve, 1907, previously mentioned in the literature, is excluded from the fauna of the island. Sarcophaga (Heteronychia) thirionae (Lehrer, 1976) is recorded for the first time from Europe and North Africa (Algeria). One species, Sarcophaga (Heteronychia) gabrielei sp. nov., from various sites in the limestone massif of Marganai, is described as new. Previously unpublished records from other Italian regions and from other countries (Algeria, Canary Islands, Greece) are also given for several species. Sarcophaga (Heteronychia) schnabli Villeneuve, 1911 is recognized as a junior synonym of S. (H.) consanguinea Rondani, 1860 syn. nov. The possible synanthropy of Sarcophaga (Heteronychia) pandellei (Rohdendorf, 1937) is briefly discussed. A key to males and females of all known Sardinian and Corsican species of Sarcophaga (Heteronychia) is provided.

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Identification of proximal tubule segments in the mouse nephron by simultaneous visualization of alkaline phosphatase and γ-glutamyl transpeptidase

Acta Histochemica ◽

10.1016/s0065-1281(85)80011-8 ◽

1985 ◽

Vol 77 (1) ◽

pp. 37-IN3 ◽

Cited By ~ 2

Author(s):

Normand Brière ◽

Marc Martel ◽

Gérard Plante ◽

Claude Petitclerc

Keyword(s):

Alkaline Phosphatase ◽

Proximal Tubule ◽

Glutamyl Transpeptidase ◽

Proximal Tubule Segments ◽

Simultaneous Visualization

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Variation within and between Rivers in Adult Size and Sea Age at Maturity of Anadromous Brown Trout, Salmo trutta

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f91-119 ◽

1991 ◽

Vol 48 (6) ◽

pp. 1015-1021 ◽

Cited By ~ 29

Author(s):

Jan Henning L'Abée-Lund

Keyword(s):

Brown Trout ◽

Sexual Maturity ◽

Salmo Trutta ◽

Adult Size ◽

Age At Maturity ◽

Migration Distance ◽

Spawning Area ◽

Brown Trout Salmo Trutta ◽

Males And Females ◽

The Mean

I compared adult size and sea age at sexual maturity among nine populations of anadromous brown trout, Salmo trutta, in two Norwegian rivers to determine the extent of inter- and intrariverine variations. Variation in the mean length of spawners and in the mean sea age at sexual maturity were mainly dependent on the variations found within rather than between rivers. Mean lengths and mean age at maturity of males increased significantly with increasing altitude of the spawning area and with migration distance in freshwater. In females, positive significant correlations were found with mean lengths and altitude of the spawning area and with mean sea age at maturity and both spawning site altitude and migration distance. Mean lengths and ages of males and females were not significantly correlated with the rate of water discharge in the streams during spawning. The size of gravel substrate for spawning was of minor importance in explaining interpopulation variation in mean female size. The increase noted in mean length and in mean sea age at maturity of both males and females is probably an adaptation to greater energy expenditure to reach the uppermost natal spawning areas.

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The Australian species of Aponomma and Amblyomma (Ixodoidea).

Australian Journal of Zoology ◽

10.1071/zo9530111 ◽

1953 ◽

Vol 1 (1) ◽

pp. 111 ◽

Cited By ~ 18

Author(s):

FHS Roberts

Keyword(s):

New Species ◽

Australian Species ◽

Males And Females ◽

First Time ◽

Species Being

A study has been made of the Australian species of Aponomma and Amblyomma (Ixodoidea). Nine species of Aponomma were determined, namely A. trachysauri, A. hydrosauri, A. auruginans, A. decorosum, A. simplex, A. trimuculatum, A. tachyglossi, A, tropicum, and A. pulchrum, the last three species being new. Two previously described species, namely A. quadratum and A. ecinctum, were recognized among the material available for study. A detailed description given of each species together with essential figures. Keys to the males, females, and nymphs are included. Twelve species of Amblyomma were seen. Species previously described included A. moreliae, A. limbatum, A. albolimbatum, A. triguttatum, A. australiense, and A. papuanu. A. postoculatum and A. helvolum were not recognized among the material available for study. A. papuana is recorded from Australia for the first time. Four new species, namely A. sternne, A. echidnae, A. macropi, and A. moyi, are described. Keys to the males and females are given.

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Synopsis of the genus Bothriochloa (Poaceae: Andropogoneae) in India

Phytotaxa ◽

10.11646/phytotaxa.516.1.3 ◽

2021 ◽

Vol 516 (1) ◽

pp. 43-58

Author(s):

SHAHID NAWAZ LANDGE ◽

RAJENDRA D. SHINDE

Keyword(s):

Papua New Guinea ◽

Morphological Study ◽

Far East ◽

Detailed Comparison ◽

Disjunct Distribution ◽

Indian Species ◽

Taxonomic Study ◽

Morphological Attributes ◽

Morphological Variations ◽

First Time

During the taxonomic study of the genus Bothriochloa from India, B. ewartiana was reported for the first time in Asia from India. Earlier, it was known only from Australia, Lesser Sunda Island (Sumbawa, Timor), Philippines (Luzon), and Papua New Guinea (Madang). We have discussed about its amphitropical disjunct distribution over a vast continental gap with respect to some variability reported in the morphological attributes. A hypothesis behind its seclusion from Far East is also discussed. The images of the habitat and habit of B. ewartiana along with its detailed comparison with a close species B. woodrovii are provided. The taxonomic limits of each Indian species of Bothriochloa along with their ranges of morphological variations and distribution have been discussed in a detail. The Indian endemic B. parameswaranii (synonym nova) has been relegated, based on the morphological study, as a new taxonomic synonym of B. insculpta. Moreover, keys to identify closely allied genera and the species of Bothriochloa in India are provided. At the end, identification, taxonomic notes and the range of variations of Dichanthium foulkesii, D. jainii & D. concanense have been discussed in a detail.

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Intraspecific ecomorphological variations in Poecilia reticulata (Actinopterygii, Cyprinodontiformes): comparing populations of distinct environments

Iheringia Série Zoologia ◽

10.1590/1678-476620151052217222 ◽

2015 ◽

Vol 105 (2) ◽

pp. 217-222 ◽

Cited By ~ 1

Author(s):

Fábio T. Mise ◽

Fagner de Souza ◽

João P. A. Pagotto ◽

Erivelto Goulart

Keyword(s):

Poecilia Reticulata ◽

Principal Component ◽

Water Current ◽

Way Of Life ◽

Morphological Variations ◽

Current Availability ◽

Environment Type ◽

Morphological Variables ◽

Males And Females ◽

Morphological Differences

ABSTRACT Morphological variations, according to the principles of ecomorphology, can be related to different aspects of the organism way of life, such as occupation of habitats and feeding behavior. The present study sought to examine the intraspecific variation in two populations of Poecilia reticulata Peters, 1859, that occur in two types of environments, a lotic (Maringá Stream) and a lentic (Jaboti Lake). Due to a marked sexual dimorphism, males and females were analyzed separately. Thus, the proposed hypotheses were that the populations that occur in distinct environments present morphological differences. The morphological variables were obtained using morphometric measurements and the ecomorphological indexes. The data were summarized in a Principal Component Analysis (PCA). A Multivariate Analysis of Variance (Manova) was made to verify significant differences in morphology between the populations. Males and females showed similar ecomorphological patterns according to the environment they occur. In general the population from Maringá Stream had fins with major areas, and the Jaboti Lake population eyes located more dorsally. Additionally, others morphological differences such as wider mouth of the males from Maringá Stream, wider heads on Jaboti Lake females and more protractible mouths on males from Jaboti Lake suggest a set of environmental variables that can possibly influence the ecomorphological patterns of the populations, as the water current, availability of food resources and predation. In summary, the initial hypotheses could be confirmed, evidencing the occurrence of distinct ecomorphotypes in the same species according to the environment type.

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Review of the Priocnemis hyalinata species-group (Hymenoptera: Pompilidae), with description of a new species from China

Zootaxa ◽

10.11646/zootaxa.4254.5.4 ◽

2017 ◽

Vol 4254 (5) ◽

pp. 551

Author(s):

VALERY M. LOKTIONOV ◽

ARKADY S. LELEJ ◽

ZAI-FU XU

Keyword(s):

New Species ◽

Species Group ◽

Oriental Region ◽

Males And Females ◽

First Time ◽

One New Species ◽

A New Species

Eight species in the Priocnemis hyalinata species-group are reviewed. The species-group is recorded from Oriental Region for the first time, and one new species, Priocnemis (Priocnemis) yunnanensis Loktionov, Lelej & Xu, sp. nov. (China: Yunnan) is described and illustrated. The lectotype of Salius (Priocnemis) unicolor Gussakovskij is designated. The distribution of P. (P.) hyalinata (Fabricius), P. (P.) fennica Haupt and P. (P.) unicolor (Gussakovskij) is clarified and enlarged within Russia. Keys to species for males and females are given.

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