scholarly journals First Report on the Diversity and Distribution of Parasitic Monogenoids (Platyhelminthes) From Catfishes (Siluriformes) in Arunachal Pradesh, India

Author(s):  
Amit Tripathi ◽  
Leki Wangchuk ◽  
Dobium Narba ◽  
Chawan Matey

Abstract Monogenoidea (Platyhelminthes), one of the largest groups of ectoparasitic metazoans worldwide, comprises over 10,000 nominal species distributed globally, many of which may represent a serious threat to their fish hosts in aquaculture conditions. The fish fauna of Arunachal Pradesh, India– a global hotspot of biodiversity– is reasonably well-documented, with at least 213 known species (including 69 Siluriformes). These faunas are an essential resource for this tribal state’s economy. In sharp contrast, information on parasitic monogenoids of fish from the region is extremely limited, with only nine species described to date. In this study, 21 species of catfishes were collected and examined with the aim of expanding the current knowledge of the diversity and distribution of monogenoid species from Arunachal Pradesh. 15 (62.5%) of the 21 catfish species studied were infected with a total of 25 monogenoid species (11 previously described and 14 newly discovered in this study). Ten species of catfish were the first host records for new parasite species, while two species of catfish were new host records for previously known monogenoids. Arunachal Pradesh represents new geographic locality records for all 11 previously described parasite species, thus significantly expanding their distribution area from North and South India to extreme Northeast India. The patterns of parasite species richness in relation to three ecological traits (fish habitat, body size, and elevation) as well as host specificity across the 21 examined species of catfishes, the unique problem of too many parasite species in Wallago attu, and the future of parasitology in Arunachal Pradesh, India are discussed.

Zootaxa ◽  
2021 ◽  
Vol 5023 (2) ◽  
pp. 239-250
Author(s):  
LAISHRAM KOSYGIN ◽  
PRATIMA SINGH ◽  
SHIBANANDA RATH

Glyptothorax rupiri, a new sisorid catfish, is described from the Brahmaputra River basin in Arunachal Pradesh, northeast India. It differs from its congeners in the Indian subcontinent by the following combination of characters: the presence of plicae on the ventral surface of the pectoral spine and first pelvic-fin ray; a posteriorly serrated dorsal-fin spine, its length 11.3–12.2% SL; body depth at anus 11.2–13.4% SL; a thoracic adhesive apparatus longer than broad, with a V-shaped median depression which opens posteriorly; an arrow-shaped anterior nuchal plate element; adipose-fin base length 10.9–12.6% SL; nasal barbel not reaching anterior orbital margin; 14–18 serrae on posterior margin of the pectoral-fin spine; body with two longitudinal pale-cream stripes; densely tuberculated skin; and the presence of numerous tubercles on the dorsal surface of pectoral and pelvic-fin rays.  


2013 ◽  
Vol 10 (6) ◽  
pp. 4009-4036 ◽  
Author(s):  
A. Braga-Henriques ◽  
F. M. Porteiro ◽  
P. A. Ribeiro ◽  
V. de Matos ◽  
Í. Sampaio ◽  
...  

Abstract. Cold-water corals are widely considered as important structural components of benthic habitats, potentially enhancing local abundance in a variety of fish and invertebrate species. Yet, current knowledge of the taxonomic diversity and distribution patterns of these vulnerable, slow-growing organisms is scarce and fragmented, limiting the effectiveness of spatial management and conservation measures. We have conducted an exhaustive compilation of records of alcyonaceans, antipatharians, scleractinians and stylasterids available through present day to assess the diversity, distribution and spatial structure of coral assemblages in the Azores exclusive economic zone (EEZ). The resulting database comprises 2501 entries concerning historical oceanographic expeditions and other published sources, as well as unpublished data from bottom longline by-catch. Our taxonomic inventory appears to be fairly complete for the explored habitats, accounting for 164 species (79 alcyonaceans, 58 scleractinians, 18 antipatharians and 9 stylasterids), nine of which were documented for the first time. The Azores EEZ harbours a mixed coral fauna with several zoogeographic origins, showing the closest affinity with the Lusitanian–Mediterranean region. Very few apparent endemics were found (14%), and only in part supported by consistent sampling. Coral diversity is particularly high between 300 and 900 m depths, in areas recognized as traditional fishing grounds or exploitable fish habitat within the 100-mile limit of the EEZ. The composition of coral assemblages shows significant geographical structure among longitudinal sections of the study area at comparable depths (100–1500 m). There is no evidence of a possible role of the Mid-Atlantic Ridge or latitudinal effects underlying this pattern, which suggests that it may instead reflect assemblage variability among features. Stronger changes in species composition were found along the bathymetric gradient. Notwithstanding the mix of partially overlapping steno- and eurybathic species that characterize the vertical distribution of corals, there is a distinct transition from shallow (100–600 m) to intermediate (600–1000 m) depths. The analysis presented here constitutes a valuable contribution for efficient conservation policies of coral-associated vulnerable marine ecosystems and their sustainable use as fishing areas.


2017 ◽  
Vol 17 (3) ◽  
pp. 148-159
Author(s):  
Samuel Lalronunga ◽  
C. Lalrinchhana

Specimens of a rare rhacophorid frog of the genus Theloderma were collected from Hmuifang, Mizoram, India. Based on their morphology and molecular analysis (16S rRNA), the specimens were identified as Theloderma moloch, a rare species previously recorded only from the Himalayan foothills of India and China. The present record significantly extends the known range of the species and is a first record for the state of Mizoram and Indo-Burma biodiversity hotspot. The uncorrected p-distance between the specimen from Mizoram, NE India and the specimen from Arunachal Pradesh, India (KU169993) and Tibet, China (KU243081) are 0.0% and 1.2% respectively.


2021 ◽  
Vol 67 (1-3) ◽  
Author(s):  
Md Asghar

ABSTRACT Understanding the reproductive profile of a population is required for making and implementing various health policies. A plethora of studies on the behaviour of fertility and mortality across the globe have been reported. Very few studies have been reported from the population of Arunachal Pradesh, one of the states in northeast India. The present study aims to examine the reproductive profile of a small tribe of Arunachal Pradesh, namely, Miju Mishmi, inhabiting the Indo-Myanmar-China border area. Two hundred and ten households were surveyed to collect the information regarding fertility, mortality, and associated factors using a pretested schedule. Miju Mishmi is experiencing considerably high fertility and mortality. Many social and biological factors for fertility and mortality prevailing in this population were identified. The existence of reproductive compensation is also found in this population. However, unlike in many Indian societies, Miju Mishmi has no preference for a son and hence no impact on fertility.


Phytotaxa ◽  
2021 ◽  
Vol 494 (3) ◽  
pp. 268-272
Author(s):  
MOMANG TARAM ◽  
DIPANKAR BORAH ◽  
MARK HUGHES

A new species of Begonia sect. Platycentrum, B. kekarmonyingensis, from Kekar Monying, a place of historical significance in Arunachal Pradesh, Northeast India is illustrated and described. It is allied to B. cathcartii and B. menglianensis, and morphological similarities and differences between the species are discussed. It has been assessed as Vulnerable according to IUCN Red List criteria.


Gene ◽  
2020 ◽  
Vol 754 ◽  
pp. 144860
Author(s):  
Pramod Kumar Pandey ◽  
Yambem Suresh Singh ◽  
Partha Sarathi Tripathy ◽  
Ram Kumar ◽  
Santosh Kumar Abujam ◽  
...  

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1160
Author(s):  
Martino Adamo ◽  
Stefano Mammola ◽  
Virgile Noble ◽  
Marco Mucciarelli

We studied the ecology, distribution, and phylogeography of Tephroseris balbisiana, a rare plant whose range is centered to the South-Western Alps. Our aim was to assess the extent of intraspecific variability within the nominal species and the conservation status of isolated populations. We studied genetic diversity across the whole species range. We analyzed leaf traits, which are distinctive morphological characters within the Tephroseris genus. A clear pattern of genetic variation was found among populations of T. balbisiana, which clustered according to their geographic position. On the contrary, there was a strong overlap in the morphological space of individuals across the species’ range, with few peripheral populations diverging in their leaf morphology. Studying habitat suitability by means of species distribution models, we observed that T. balbisiana range is primarily explained by solar radiation and precipitation seasonality. Environmental requirements could explain the genetic and morphological uniformity of T. balbisiana in its core distribution area and justify genetic, morphological, and ecological divergences found among the isolated populations of the Apennines. Our findings emphasize the need to account for the whole diversity of a species, comprising peripheral populations, in order to better estimate its status and to prioritize areas for its conservation.


2016 ◽  
Vol 88 (11) ◽  
pp. 1999-2003
Author(s):  
Dipankar Biswas ◽  
Manika Buragohain ◽  
Kaushal Yadav ◽  
Mousumi Dutta ◽  
Kimmi Sarmah ◽  
...  

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