scholarly journals Four new species of Acalypha L. (Euphorbiaceae, Acalyphoideae) from the West Indian Ocean Region

PhytoKeys ◽  
2020 ◽  
Vol 140 ◽  
pp. 57-73
Author(s):  
Iris Montero-Muñoz ◽  
Geoffrey A. Levin ◽  
José M. Cardiel
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Western Indian Ocean ◽  
Molecular Evidence ◽  
Indian Ocean Region ◽  
The West ◽  
Ocean Region ◽  
West Indian Ocean ◽  
Conservation Assessments ◽  
First Time

Four new species of Acalypha (Euphorbiaceae, Acalyphoideae) from the Western Indian Ocean Region, based on morphological and molecular evidence, are described, illustrated, and mapped. Acalypha gillespieae sp. nov., A. leandrii sp. nov. and A. nusbaumeri sp. nov. are endemic to Madagascar, and A. mayottensis sp. nov. is known only from Mbouzi islet (Mayotte), in the Comoros Archipelago. We also describe for the first time in Acalypha the presence of membranous or chartaceous perules covering the axillary buds. Preliminary conservation assessments of the new species are also provided.

Pontoniine shrimps (Decapoda: Palaemonidae) from the island of Socotra, with descriptions of new species of Dactylonia Fransen, 2002 and Periclimenoides Bruce, 1990

Zootaxa ◽  
2006 ◽  
Vol 1137 (1) ◽  
pp. 1 ◽  
Author(s):  
A. J. BRUCE
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Present Report ◽  
Western Indian Ocean ◽  
North West ◽  
The North ◽  
First Occurrence ◽  
West Indian Ocean ◽  
First Time ◽  
North Western

The present report provides information on 20 pontoniine shrimp taxa from the island of Socotra, collected by Dr Michael Apel, including two new species, of the genera Dactylonia Fransen and Periclimenoides Bruce. Thirteen species are reported from Yemen for the first time, 8 are newly recorded from the north western Indian Ocean. The record of Periclimenoides is the first occurrence of this genus in the western Indian Ocean. The number of pontoniine shrimps known from the north west Indian Ocean is now increased from 32 to 44 taxa.

scholarly journals Nomenclatural review of Acalypha (Euphorbiaceae) of the Western Indian Ocean Region (Madagascar, the Comoros Archipelago, the Mascarene Islands and the Seychelles Archipelago)

PhytoKeys ◽  
2018 ◽  
Vol 108 ◽  
pp. 85-116 ◽  
Author(s):  
Iris Montero Muñoz ◽  
José María Cardiel ◽  
Geoffrey A. Levin
Keyword(s):  
Indian Ocean ◽  
Western Indian Ocean ◽  
New Combinations ◽  
Indian Ocean Region ◽  
New Name ◽  
Ocean Region ◽  
Mascarene Islands ◽  
First Time

This work presents a critical nomenclatural review of the Acalypha species of the Western Indian Ocean Region (Madagascar, the Comoros Archipelago, the Mascarene Islands and the Seychelles Archipelago). This is the first treatment of Acalypha of Madagascar since Leandri’s monograph in 1942. A total of 151 scientific names related to Acalypha from this region are treated. We recognise 35 species (28 native and seven introduced), treat 93 names as synonyms (28 of them for the first time) and identify three as doubtful or excluded names. We designate lectotypes for 41 names, make two new combinations and propose one new name.

scholarly journals Invasion of coral reefs of Lakshadweep atolls by a central Indo-Pacific corallimorph

2021 ◽  
Author(s):  
Alvin A. ◽  
Aju K. R. ◽  
Sreenath K. R. ◽  
Pradeep M. A. ◽  
Nisha E. A. ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Coral Reefs ◽  
Tropical Indian Ocean ◽  
Western Indian Ocean ◽  
Competitive Interaction ◽  
Benthic Organisms ◽  
Indian Ocean Region ◽  
External Disturbances ◽  
Ocean Region ◽  
First Time

Abstract Worldwide, coral reefs are in decline due to mass bleaching, natural calamities, diseases, and anthropogenic stressors that expose large swathe of unutilized substratum which is later occupied by other benthic organisms like corallimorpharians, anemones, macroalgae etc. In the current work, we describe for the first time, the competitive interaction between a corallimorph and hard corals, observed in Kavaratti and Chetlat atolls in the tropical Indian Ocean, which is the first reported instance of an invasion of corallimorpharian in the entire Lakshadweep islands. The corallimorph, Rhodactis bryoides Haddon & Shackleton, 1893, is identified by morphological and molecular analysis. It is found that the species has no previous records from the western Indian Ocean region. Since the competitive interaction among reef organisms for space will have significant repercussions on the entire reef ecosystem in the future, we observed the pace of invasion for six months and calculated the relative abundance of the corallimorph using transects. None of the previous factors causing a corallimorpharia outbreak viz., external disturbances and nutrient enrichment were observed in this region. However, these tropical atolls are prone to occasional bleaching during the summer seasons. Further investigation needs to be conducted on the biology of this species, the interaction with other benthic groups and the environmental descriptors promoting the invasion.

“Research in the Western Indian Ocean Region” Conference’: Preliminary Report and Recommendations

1966 ◽  
Vol 9 (01) ◽  
pp. 33-37
Author(s):  
Aidan Southall
Keyword(s):  
Indian Ocean ◽  
Cultural Anthropology ◽  
Western Indian Ocean ◽  
Social Background ◽  
Columbia University ◽  
Indian Ocean Region ◽  
Research Committee ◽  
Northwestern University ◽  
Ocean Region ◽  
Syracuse University

The conference was sponsored by the African Research Committee and was held at the Minnowbrook Conference Center of Syracuse University from October 30 to November 2, 1965. The disciplines represented were social and cultural anthropology, musicology, sociology, social psychology, political science, and history. Participants included Philip Allen (Department of State); Frederick Burke (Syracuse University); Remi Clignet (Northwestern University); L. Gray Cowan (Columbia University); Norma McCloud (Tulane University); John Middleton (Northwestern University); Allen Rawick (Library of Congress); Aidan Southall, Chairman (Syracuse University); and Peter Wilson (Yale University). The conference concentrated its efforts on seeking and sharing a common understanding of the social background of the diverse ocean and island region that includes Madagascar, the Comoros, Mauritius, Réunion, and the Seychelles and on exploring precisely the extent to which linked interdisciplinary and comparative studies would be fruitful. The conference came to a strong and unanimous conclusion that the Western Indian Ocean Region offers the challenging possiblity of a real breakthrough in a number of dissimilar but closely interlocking research interests. The main recommendations of the conference are as follows: 1. That a rather informal clearinghouse should be established which would institute and maintain contact between social scientists interested in the region and keep them up to date on all relevant plans and work in progress. 2. That a careful and detailed application should be drawn up to obtain funds for carrying out a series of well-balanced and integrated studies, attracting graduate students and training them for further work, securing library resources, and forming appropriate ties with interested scholars and academic institutions overseas.

India’s Strategic Interests and Partnership with Island States of Africa in the Western Indian Ocean Region

2020 ◽  
Vol 7 (2) ◽  
pp. 227-243
Author(s):  
Raghvendra Kumar
Keyword(s):  
Indian Ocean ◽  
Western Indian Ocean ◽  
Power Dynamics ◽  
Indian Ocean Region ◽  
Island States ◽  
Global Power ◽  
Challenges And Opportunities ◽  
Ocean Region ◽  
Indian Ocean Island ◽  
The Indian Ocean

The Indian Ocean has turned into the new geographical centre of power, where global power dynamics is being revealed. It has been transformed into a geostrategic heartland, forecasting new challenges and opportunities, and at the core of this is an emerging power, India, which, being located at a strategic juncture in the Indian Ocean, shapes much of this geostrategic transformation. Therefore, sustaining and improving security and continuing economic expansion, with an increased strategic presence in the region to safeguard its national, regional and global interests are some of the elements which greatly influence India’s involvement with the strategic island states of Africa in the Western Indian Ocean Region. In this backdrop, this article has tried to contextualise the ‘Western Indian Ocean Region’ and ‘situate the actors’ to explore the various contours of geostrategic engagements the region is witnessing. Further, the article examines India’s strategic interests in the Western Indian Ocean, which are critical for its global power aspirations. It discusses the linkages between India and the Western Indian Ocean island states of Africa, which would become the precursor for newer strategies and help in harnessing the potential of mutually beneficial cooperation. Lastly, the article seeks to re-engage with the island states of Africa to help forge a deeper cultural and strategic bond, which would be crucial in balancing the power equation in the region.

scholarly journals Flatfoot in Africa, the cirripede Chthamalus in the west Indian Ocean

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11710
Author(s):  
Noa Simon-Blecher ◽  
Avi Jacob ◽  
Oren Levy ◽  
Lior Appelbaum ◽  
Shiran Elbaz-Ifrah ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Cryptic Species ◽  
Morphological Characteristics ◽  
West Indian ◽  
Western Indian Ocean ◽  
Rocky Intertidal ◽  
Morphological Data ◽  
The West ◽  
African Species ◽  
West Indian Ocean

Barnacles of the genus Chthamalus are commonly encountered rocky intertidal shores. The phylogeography of the different species in the Western Indian Ocean is unclear. Using morphological characteristics as well as the molecular markers mitochondrial cytochrome oxygenase subunit I (COI) and the nuclear sodium-potassium ATPase (NaKA), we identified four clades representing four species in the Western Indian Ocean and its adjacent seas. Among these species, a newly identified species, Chthamalus barilani, which was found in Madagascar, Zanzibar and Tanzania. Chthamalus from the coasts of Tanzania and Zanzibar is identified morphologically as C. malayensis, and clusters with C. malayensis from the Western Pacific and the Indo Malayan regions. C. malayensis is regarded as a group of four genetically differentiated clades representing four cryptic species. The newly identified African clade is genetically different from these clades and the pairwise distances between them justify the conclusion that it is an additional cryptic species of C. malayensis. This type of genetic analyses offers an advantage over morphological characterization and allowed us to reveal that another species, C. barnesi, which is known from the Red Sea, is also distributed in the Arabian Sea and the Persian Gulf. We could also confirm the presence of the South African species C. dentatus in the Mozambique channel. This represents the Northeastern limit of C. dentatus, which is usually distributed along the coast of southern Africa up to the Islands of Cape Verde in West Africa. Altogether, based on a combination of morphology and genetics, we distinct between four clusters of Chthamalus, and designate their distribution in the West Indian Ocean. These distinctions do not agree with the traditional four groups reported previously based merely on morphological data. Furthermore, these findings underline the importance of a combining morphological and genetics tools for constructing barnacle taxonomy.

Sign in / Sign up

Export Citation Format

Share Document