scholarly journals Different on the inside: extreme swimbladder sexual dimorphism in the South Asian torrent minnows

2014 ◽  
Vol 10 (7) ◽  
pp. 20140348 ◽  
Author(s):  
Kevin W. Conway ◽  
Ralf Britz ◽  
Dustin S. Siegel
Keyword(s):  
Sexual Dimorphism ◽  
South Asian ◽  
Unknown Function ◽  
Freshwater Fishes ◽  
Flowing Water ◽  
The South ◽  
Internal Organs ◽  
Sexual Dimorphisms ◽  
First Time

The swimbladder plays an important role in buoyancy regulation but is typically reduced or even absent in benthic freshwater fishes that inhabit fast flowing water. Here, we document, for the first time, a remarkable example of swimbladder sexual dimorphism in the highly rheophilic South Asian torrent minnows ( Psilorhynchus ). The male swimbladder is not only much larger than that of the female (up to five times the diameter and up to 98 times the volume in some cases), but is also structurally more complex, with multiple internal septa dividing it into smaller chambers. Males also exhibit a strange organ of unknown function or homology in association with the swimbladder that is absent in females. Extreme sexual dimorphism of non-gonadal internal organs is rare among vertebrates and the swimbladder sexual dimorphisms that we describe for Psilorhynchus are unique among fishes.

Remarks on some interesting African Pamphagidae and Acrididae (Insecta: Orthoptera: Acridoidea)

Zootaxa ◽  
2020 ◽  
Vol 4751 (1) ◽  
pp. 29-54
Author(s):  
BRUNO MASSA
Keyword(s):  
Sexual Dimorphism ◽  
South African ◽  
The South ◽  
Male And Female ◽  
Female Sex ◽  
First Time

The author reports about the results of a study of Porthetinae (Pamphagidae) and other Acridoidea preserved in some European museums. The taxonomy of African Porthetinae is still poorly known; some genera were established on variable characters (e.g.: the number of the flagellum segments, the shape of the hind femora or the prosternal tubercle) and collections generally hold only few specimens of this group. These insects are characterized by a remarkable sexual dimorphism, the males generally are winged while females are apterous. Because many species were described only from one sex (sometimes the female sex), there are objective difficulties to identify them correctly. The following synonymies are proposed here: Pagopedilum Karsch, 1896 = Stolliana Bolívar, 1916; Pagopedilum brevis (Walker, 1870) = Pagopedilum martini Bolívar, 1915; Cultrinotus poultoni Bolívar, 1915 = Cultrinotus luanensis Uvarov, 1953. The male of Pagopedilum bradyanum (Saussure, 1887) and adults male and female of Pagopedilum brevis (Walker, 1870) (known only from the nymph) are described. The distinction of the genera Lobosceliana Dirsh, 1958 and Xiphoceriana Dirsh, 1958 is revealed to be very difficult and they are probably synonyms, but more material should be studied. The stridulatory system found in different genera of Porthetinae is briefly described. Further, the South African Batrachotetrix cantans Saussure, 1888 (Pamphagidae: Akicerinae) is recorded for the first time in Namibia, Barombia tuberculosa sublaevis Bolívar, 1905 (Acrididae: Catantopinae) is synonymized with B. t. tuberculosa Karsch, 1891, a probable new brachypterous species of Rhachitopis (Acrididae: Euryphyminae) is reported from Angola, the Namibian Pycnodictya herero Karny, 1910 (Acrididae: Oedipodinae) is recorded for the first time from Angola, and the Tanzanian Tmetonota dispar Miller, 1929 (Acrididae: Oedipodinae) is recorded for the first time from Kenya. 

scholarly journals Exploring Sexual Dimorphism in the Intestinal Microbiota of the Yellow Drum (Nibea albiflora, Sciaenidae)

2022 ◽  
Vol 12 ◽  
Author(s):  
Haidong Li ◽  
Lei Lu ◽  
Ruiyi Chen ◽  
Shanshan Li ◽  
Dongdong Xu
Keyword(s):  
Sex Differences ◽  
Sexual Dimorphism ◽  
Microbial Communities ◽  
Intestinal Microbiota ◽  
Internal Organs ◽  
Ecological Processes ◽  
Sexual Dimorphisms ◽  
Significant Difference ◽  
Nibea Albiflora ◽  
Main Components

Most of fish species exhibit striking sexual dimorphism, particularly during growth. There are also sexual dimorphisms of internal organs and biological functions, including those of intestinal microbiota, which likely plays a key role in growth. In this study, the growth and intestinal microbiota of the female, male, and all-female Nibea albiflora (yellow drums) were comprehensively analyzed. The caged culture female and all-female yellow drums showed higher growth rates than males. A further analysis of the intestinal microbiota showed a significant difference in diversity between females and males in the summer, whereas there were no significant differences in the diversity and richness between females and males in the winter. In contrast, a significant difference in richness was observed between all-female and male fish, regardless of the season. Although the main composition of the intestinal microbiota showed no significant sex differences, the community structure of the intestinal microbiota of yellow drums did. Furthermore, the correlations between intestinal microbial communities are likely to be influenced by sex. The ecological processes of the intestinal microbial communities of the yellow drums showed clear sexual dimorphism. Further network analysis revealed that, although the main components of the network in the intestinal microbiota of female, male, and all-female fish were similar, the network structures showed significant sex differences. The negative interactions among microbial species were the dominant relationships in the intestinal ecosystem, and Bacteroidetes, Firmicutes, and Proteobacteria were identified as the functional keystone microbes. In addition, the functional pathways in the intestinal microbiota of yellow drums showed no significant sexual or seasonal differences. Based on the findings of this study, we gain a comprehensive understanding of the interactions between sex, growth, and intestinal microbiota in yellow drums.

From the Promise of Samosas to Hosting Bollywood Blowouts: Innovations in Reaching Out to the South Asian Community

2012 ◽  
Author(s):  
Rahul Sharma ◽  
Razia Kosi ◽  
Ulash Thakore-Dunlap ◽  
Sushama Kirtikar
Keyword(s):  
South Asian ◽  
The South ◽  
Asian Community ◽  
South Asian Community

Labels, Histories, Politics: Indian/South Asian Dance on the Global Stage

2008 ◽  
Vol 26 (2) ◽  
pp. 223-243 ◽  
Author(s):  
AVANTHI MEDURI
Keyword(s):  
South Asian ◽  
First Century ◽  
Nation State ◽  
The South ◽  
Global Networks ◽  
Indian Nation ◽  
The 1950S ◽  
Twenty First Century ◽  
The Uk

In this paper, I discuss issues revolving around history, historiography, alterity, difference and otherness concealed in the doubled Indian/South Asian label used to describe Indian/South Asian dance genres in the UK. The paper traces the historical genealogy of the South Asian label to US, Indian and British contexts and describes how the South Asian enunciation fed into Indian nation-state historiography and politics in the 1950s. I conclude by describing how Akademi: South Asian Dance, a leading London based arts organisation, explored the ambivalence in the doubled Indian/South Asian label by renaming itself in 1997, and forging new local/global networks of communication and artistic exchange between Indian and British based dancers and choreographers at the turn of the twenty-first century.

Heritage

2018 ◽  
Author(s):  
Omar Shaikh ◽  
Stefano Bonino
Keyword(s):  
Facial Expressions ◽  
South Asian ◽  
Online Video ◽  
The South ◽  
Men And Women ◽  
The Public ◽  
Video Footage ◽  
Community Heritage ◽  
Personal Accounts ◽  
The Way

The Colourful Heritage Project (CHP) is the first community heritage focused charitable initiative in Scotland aiming to preserve and to celebrate the contributions of early South Asian and Muslim migrants to Scotland. It has successfully collated a considerable number of oral stories to create an online video archive, providing first-hand accounts of the personal journeys and emotions of the arrival of the earliest generation of these migrants in Scotland and highlighting the inspiring lessons that can be learnt from them. The CHP’s aims are first to capture these stories, second to celebrate the community’s achievements, and third to inspire present and future South Asian, Muslim and Scottish generations. It is a community-led charitable project that has been actively documenting a collection of inspirational stories and personal accounts, uniquely told by the protagonists themselves, describing at first hand their stories and adventures. These range all the way from the time of partition itself to resettling in Pakistan, and then to their final accounts of arriving in Scotland. The video footage enables the public to see their facial expressions, feel their emotions and hear their voices, creating poignant memories of these great men and women, and helping to gain a better understanding of the South Asian and Muslim community’s earliest days in Scotland.

Alternate Futures after the South Asian Nuclear Tests: Pokhran as Prologue

Asian Survey ◽  
1999 ◽  
Vol 39 (3) ◽  
pp. 504-524 ◽  
Author(s):  
Wade L. Huntley
Keyword(s):  
South Asian ◽  
The South ◽  
Nuclear Tests

Sphagnum mosses (Sphagnaceae, Bryophyta) of South Ossetia (Caucasus)

2017 ◽  
Vol 51 ◽  
pp. 232-241 ◽  
Author(s):  
G. Ya. Doroshina ◽  
E. Yu. Kuzmina ◽  
I. A. Nikolajev
Keyword(s):  
The South ◽  
The Caucasus ◽  
South Ossetia ◽  
Sphagnum Mosses ◽  
Botanical Institute ◽  
Ecological Conditions ◽  
Komarov Botanical Institute ◽  
The World ◽  
First Time

Information on the Sphagnum mosses of the South Ossetia is generalized, the resulted list is presented. Nine species of Sphagnum are included in the list, whereabouts data and references to the publications are given, and the presence of a sample in the Herbarium of the Komarov Botanical Institute RAS (LE) is noted. The species Sphagnum platyphyllum (Lindb. ex Braithw.) Warnst. rarely occurring in the Caucasus is reported in the South Ossetia for the first time. The species was found in the Caucasus, South Ossetia, at the side of the Ertso Lake (42°28ʹN, 43°45ʹE), 1720 m a. s. l., among sedge thickets at the margin of the overgrowing lake. The peculiarities of its occurrence and ecological conditions are considered. Its distribution in the Caucasus and in the world is discussed.

The first data on the lichen flora of Dagestan beech forests

2013 ◽  
Vol 47 ◽  
pp. 215-221 ◽  
Author(s):  
A. B. Ismailov ◽  
G. P. Urbanavichus
Keyword(s):  
Lichen Species ◽  
The South ◽  
Beech Forests ◽  
Saprotrophic Fungi ◽  
South Eastern ◽  
Caucasus Mountains ◽  
First Time ◽  
Lichen Flora

49 lichen species and 2 species of non-lichenized saprotrophic fungi are recorded for the first time in beech forests of the south-eastern part of piedmont Dagestan. Among them, 34 species and 9 genera are new to Dagestan Republic, and 2 species, Diplotomma pharcidium (Ach.) M. Choisy and Rinodina albana (A. Massal.) A. Massal., are new to Caucasus Mountains.

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