Assessment of interspecific variations in the reproductive patterns of co-existing female mullet species inhabiting intertidal mudflats of Indian Sundarbans

2020 ◽  
Vol 39 ◽  
pp. 101446
Author(s):  
Anwesha Roy ◽  
Anupam Podder ◽  
Soumyadip Panja ◽  
Missidona Biswas ◽  
Atreyee Chaudhuri ◽  
...  
2016 ◽  
Vol 547 ◽  
pp. 79-89 ◽  
Author(s):  
RF Freitas ◽  
EC Schrack ◽  
Q He ◽  
BR Silliman ◽  
EB Furlong ◽  
...  

Author(s):  
Derek Burton ◽  
Margaret Burton

Interspecific fish reproductive patterns, outputs and life cycles display the greatest variability within the vertebrates. Early stages of oogenesis can be repeated in adult fish, contrasting with mammals; the pre-set sequence of cell divisions in gametogenesis is otherwise similar and is described in detail. Most fish deposit much yolk (vitellogenesis) in developing eggs. Migrations, beach-spawning and mouth-brooding are some of the interesting variations. Fertilization is predominantly external but is internal in some groups such as chondrichthyans. The omission of annual reproduction is well established in some freshwater species and the idea that this may also be the case for marine teleosts is gaining acceptance. This should be taken into account for intensively fished species. The possible roles of external cues, hormones, pheromones and neural factors acting as ‘switches’ and coordinators in gametogenesis and reproductive behaviour are discussed.


2021 ◽  
Vol 30 (4) ◽  
pp. 883-895
Author(s):  
Benjamin Andrieux ◽  
Juliette Signor ◽  
Vincent Guillou ◽  
Michael Danger ◽  
Franck Jabot

Author(s):  
Sandip Giri ◽  
Sourav Samanta ◽  
Partho Protim Mondal ◽  
Oindrila Basu ◽  
Samiran Khorat ◽  
...  

Hydrobiologia ◽  
2020 ◽  
Author(s):  
Roeland A. Bom ◽  
Jan A. van Gils ◽  
Karen Molenaar ◽  
Andy Y. Kwarteng ◽  
Reginald Victor ◽  
...  

2021 ◽  
pp. 239386172110146
Author(s):  
Prama Mukhopadhyay

Internal migration constitutes a major source of steady flow of population in India, and reports published by the World Economic Forum (WEF),1 2017 state that interstate migration in the country has doubled during 2001–2011, compared to the previous decade.2 In developing countries, such migration is often considered to be an effective way for income diversification for the economically marginalised sections of the society, even though its effect on ‘human development’ is oft debated. This article would engage with this debate and bring out how migration from the Indian part of the Sundarbans to other parts of the country is not only changing the demography of the region but is also having a strong impact on the local perception and attachment towards the deltaic landscape. By bringing in ethnographic details from a village in the Indian Sundarbans, which was predominately inhabited by the fishing community earlier, this article would bring out how traditional occupations like fishing are slowly losing their popularity in the face of the lure of out-migration, as the very identity of the ‘indigenous’ Sundarban fisher folks—who were once rightfully considered to be the true conservator of the forests—is changing. From there, this article would engage with the broader debate of rethinking whether migration can be considered as a positive indicator of development in such ecologically fragile areas like the Sundarban deltas, which used to indeed have a distinct economic, social and cultural life of its own.


1997 ◽  
Vol 78 (3) ◽  
pp. 830-838 ◽  
Author(s):  
Y. Yoshinaga ◽  
T. Okayama ◽  
W. Ohno ◽  
S. Shiraishi

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