Role of biogeochemical parameters in delineating suitable habitats of juvenile Hilsa (Tenualosa ilisha) within an estuary

Surveying the role of climate changes on the species distributions in the past, present and future, and correlating these with changes in distribution ranges have attracted considerable research interest. The leopard geckos of the genus Eublepharis Gray, 1827 (family Eublepharidae), as a vicariate group, comprises six valid species distributed from Turkey through the Iranian Plateau to India, of which E. angramainyu, E. macularius and E. turcmenicus occur in Iran. In this study, we modelled the potential distribution areas for E. angramainyu and determined the suitable habitats in the past (the last interglacial [LIG] and mid-Holocene [MH]), present (1950–2000), and also predicted four scenarios in the future (2050) by using the maximum entropy approach (MaxEnt). The obtained models indicated very good values of the area under curve (AUC): LIG = 0.996 ± 0.003, MH = 0.996 ± 0.004, contemporary period = 0.995 ± 0.004, and the future = 0.997 ± 0.002. Precipitation of the coldest quarter and precipitation of the warmest quarter were the most important factors shaping the distribution of E. angramainyu. As it seems, climatic changes have been responsible for a southward shift in distribution and suitable habitats of E. angramainyu from the LIG (~150,000–120,000 years ago) to the future. The representative concentration pathway (RCP) 2.6 scenario model of the future predicted a much more restricted distribution and less suitable habitats due to radiation of the forcing level which reaches a value of around 3.1 W/m² by mid-century and returns to 2.6 W/m² by 2100.

Download Full-text

Plasmodium Infections in Anopheles Mosquitoes in Ubon Ratchathani Province, Northeastern Thailand During a Malaria Outbreak

Journal of the American Mosquito Control Association ◽

10.2987/17-6715.1 ◽

2018 ◽

Vol 34 (1) ◽

pp. 11-17 ◽

Cited By ~ 1

Author(s):

Anchana Sumarnrote ◽

Vincent Corbel ◽

Hans J. Overgaard ◽

Olivier Celhay ◽

Nattapol Marasri ◽

...

Keyword(s):

Malaria Transmission ◽

Malaria Vectors ◽

Anopheles Species ◽

Community Activities ◽

Anopheles Mosquitoes ◽

Human Landing ◽

Suitable Habitats ◽

Malaria Outbreak ◽

Northeastern Thailand

ABSTRACT An unprecedented malaria outbreak occurred in Ubon Ratchathani Province, northeastern Thailand, in 2014. The province showed the highest number of malaria cases of all Thai provinces. Five entomological surveys were conducted at 8 sentinel sites from September 2013 to September 2015 to address the role of different Anopheles species in malaria transmission. Mosquito collections were conducted using human landing catches and cow bait. A total of 10,369 Anopheles mosquitoes were collected and 2,240 were morphologically identified as potential malaria vectors, including An. dirus (n = 78), An. minimus (n = 18), An. sawadwongporni (n = 4), An. barbirostris s.l. (n = 819), An. philippinensis (n = 612), An. nivipes (n = 676), An. annularis (n = 42), An. aconitus (n = 7), and An. rampae (n = 142). Real-time polymerase chain reaction was used to screen for the presence of Plasmodium spp. in salivary glands. The proportion of primary vectors of surveyed villages was very low (<1%), and no Plasmodium-infected specimens were detected among in the 2,240 Anopheles mosquitoes tested. The absence of positive Plasmodium samples during malaria outbreaks suggests that malaria transmission most likely occurred outside the villages, particularly in the deep-forested hilly areas that provided suitable habitats for competent malaria vectors. These results emphasize the need to develop vector control related to village community activities to reduce malaria transmission along Thailand border areas.

Download Full-text

In silico characterization of Myogenic Factor 6 transcript of Hilsa, Tenualosa ilisha and putative role of its SNPs with differential growth

Meta Gene ◽

10.1016/j.mgene.2017.06.003 ◽

2017 ◽

Vol 13 ◽

pp. 140-148 ◽

Cited By ~ 2

Author(s):

B.K. Divya ◽

Prabhaker Yadav ◽

Prachi Masih ◽

Rajeev K. Singh ◽

Vindhya Mohindra

Keyword(s):

In Silico ◽

Differential Growth ◽

Putative Role ◽

Myogenic Factor ◽

Tenualosa Ilisha ◽

In Silico Characterization

Download Full-text

Selecting Suitable Habitats for Reintroductions: Variation, Change and the Role of Species Distribution Modelling

Reintroduction Biology ◽

10.1002/9781444355833.ch3 ◽

2012 ◽

pp. 73-104 ◽

Cited By ~ 41

Author(s):

Patrick E. Osborne ◽

Philip J. Seddon

Keyword(s):

Species Distribution ◽

Species Distribution Modelling ◽

Distribution Modelling ◽

Suitable Habitats

Download Full-text

The role of peri-urban wetland and meadow habitats in the protection of trans-Saharan migrant passerine species in a central European city

Rivista Italiana di Ornitologia ◽

10.4081/rio.2018.406 ◽

2018 ◽

Vol 88 (1) ◽

pp. 47-52

Author(s):

Grzegorz Kopij

Keyword(s):

Bird Species ◽

Natura 2000 ◽

Urban Wetlands ◽

Lanius Collurio ◽

Sw Poland ◽

Suitable Habitats ◽

Special Protection Areas ◽

The City ◽

Remiz Pendulinus

Densities were estimated for several passerine longdistance migrant species associated with peri-urban wetlands and meadows in the city of Wroclaw (293 km2), SW Poland. Acrocephalus arundinaceus, A. scirpaceus, Locustella naevia and Lanius collurio nested in a crude density of more than 0.2 pairs/territorial males per 100 ha. The group of four other species (Saxicola torquatus, Locustella fluviatilis, L. luscinioides and Acrocephalus schoenobaenus) bred in a crude density between 1.1 and 1.5 pairs per 10 km2. The least numerous were the Sylvia nisoria (0.06 pairs per 100 ha) and Remiz pendulinus (0.02 pairs per 100 ha). Most of these species nested in the city in higher crude density than in a neighbouring rural area, richer of suitable habitats. Most breeding pairs occupied extensive peri-urban wetlands and meadows. These habitats could play an important role in conservation of these trans-Saharan migrants, as well as other water and marshland bird species. Such habitats are postulated to be protected as nature reserves or Special Protection Areas of the Natura 2000.

Download Full-text

Using parasites as biological tag for Hilsa shad (Tenualosa ilisha) migration in Bangladesh waters

Bangladesh Journal of Zoology ◽

10.3329/bjz.v48i2.52366 ◽

2021 ◽

Vol 48 (2) ◽

pp. 243-251

Author(s):

Md Aminul Islam Bhuiyan ◽

Zannatun Nahar Jhinu

Keyword(s):

Host Fish ◽

Cestode Parasite ◽

Tenualosa Ilisha ◽

Host Fishes ◽

Acanthocephalan Parasite ◽

Ecological Habitats ◽

Initial Selection ◽

Selection Of ◽

Biological Tags

The study was aimed at following the movement of adolescent Tenualosa ilisha from nursery grounds to feeding and spawning grounds or other type of movements in Bangladesh waters. To accomplish this, data on metazoan endoparasites were used as biological tags for detection of migratory route. A total of 2667 host fishes were collected from eleven sites covering the three different ecological habitats of Bangladesh. Initial selection of parasites as biological tags was executed by using established criteria, primarily on the basis of different level of infection in different habitats. The role of incidental parasites as tags is also discussed. Overall fourteen species under eleven genus of endohelminths were identified from alimentary canal and associated organs of host, only three species of them had satisfied the criteria of being as biological tag. These are cestode parasite Ilisha parthenogenetica and acanthocephalan parasite Acanthosentis indica and Acanthosentis hilsai. Higher prevalence of these parasites at respective sites and the trend of prevalence of infection in size class of host fish demonstrated host‟s anadromous nature and reinforced the belief that the T. ilisha as a whole, migrates from the sea to the rivers via the estuaries and vice versa. Bangladesh J. Zool. 48(2): 243-251, 2020

Download Full-text