Assessment of stock vulnerability of Indian marine fishes to past changes in climate and options for adaptation

Dineshbabu, A P; Zacharia, P U; Sujitha, T.; Shoba, J. K.; Rajesh, K.; Vivekanandan, E; Pillai, S Lakshmi; Sivadas, M; Ghosh, Satarupa; Ganga, U; Nair, Rekha J; Najmudeen, T M; Koya, Mohammed; Chellappan, Anulekshmi; Dash, Gyanaranjan; Divipala, Indira; Akhilesh, K; Muktha, M; Dash, Swatipriyanka Sen; Grindran, R.; Ninan, Roshen G

doi:10.3354/cr01586

Cited by 14 publications

(10 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our study demonstrated the necessity for global data from all species in order to arrive at a thorough conclusion about the systematics of this genus to verify its concordance with morphological groupings in the previous literature. Recognition of species in catch is essential to avoid overexploitation and to assess the potential impact of fisheries on fish populations, particularly for species with a restricted geographical range (akin to many members of Scomberomorus) that are more vulnerable to climate change (Dineshbabu et al, 2020). It is extremely important to conduct niche breadth and range size studies with a wide sampling to predict their vulnerability to altering climatic conditions.…”

Section: Discussionmentioning

confidence: 99%

Resolved and Redeemed: A New Fleck to the Evolutionary Divergence in the Genus Scomberomorus Lacepède, 1801 (Scombridae) With Cryptic Speciation

Jeena

Rahuman²,

Roul³

et al. 2022

Front. Mar. Sci.

View full text Add to dashboard Cite

The genus Scomberomorus, with 18 nominal species, sustains a significant heterogeneous fishery throughout its range. The sole molecular systematic study of this genus concerned the species group S. regalis, which contains the new world taxa. The species diversity of Scomberomorus in the northern Indian Ocean has not been studied at the molecular level, often leading to misidentifications. Here, novel genetic data are provided that reconfigure species boundaries from the region. We used single and multilocus data (eight mitochondrial and three nuclear genes) to infer phylogenetic relationships, species delimitation, and the resurrection of a time-calibrated phylogenetic tree. Our aim was also to verify the hypothesis of geographical races in S. guttatus predicated on variable vertebral counts. Interestingly, all species delimitation analyses have recovered another highly cryptic species in the nominal S. guttatus previously believed to have an Indo-Pacific distribution. Scomberomorus guttatus (Bloch and Schneider, 1801) in the sensu stricto, is redeemed from its type locality based on genetic data and preliminary morphomeristic investigations and has a restricted distribution in the Bay of Bengal. The cryptic species Scomberomorus aff. guttatus which exhibits >10% genetic divergence from S. guttatus is resurrected here from the synonymy of the latter as Scomberomorus leopardus (Shaw, 1803). Widespread in the Indo-Pacific, this species contains two major molecular operational taxonomic units (MOTUs) with a divergence threshold of over 2% between them. Our analysis suggests that vertebral counts must be coupled with other features to identify the species/lineages in the nominal S. guttatus. The heterogeneity in the S. guttatus species group is discussed in relation to the ecological diversity of the region which facilitates larval recruitment and niche specialization. The results also revealed two allopatric putative species in S. commerson, found primarily in the Pacific and Indian Oceans. This study added genetic data from S. lineolatus and S. koreanus, not previously represented in the sequence repositories. Estimation of divergence time indicated that the Indo-West Pacific species group undergoes multiple diversification events besides the recent splits detected within S. leopardus.

show abstract

Section: Discussionmentioning

confidence: 99%

Resolved and Redeemed: A New Fleck to the Evolutionary Divergence in the Genus Scomberomorus Lacepède, 1801 (Scombridae) With Cryptic Speciation

Jeena

Rahuman²,

Roul³

et al. 2022

Front. Mar. Sci.

View full text Add to dashboard Cite

show abstract

“…In earlier work Shenoi et al (2004) and Brierley and Kingsford (2009), among others, have anticipated how climate shocks can weaken marine ecosystems and send shockwaves through coastal economies. In recent work Dineshbabu et al (2020) and Mujumdar et al (2020) document how the adverse impacts of climate shocks have jeopardized the livelihoods of people living in the Coastal India. In response to continuing livelihood challenges, male population chose to migrate intrastate and interstate from the Coastal India, as anticipated by Panda (2010) among others.…”

Section: Human Responses To the Continuing Crisis: Gender Dimensionsmentioning

confidence: 99%

“…Though actual fishing activities are male-centric and undertaken by males, women traditionally help their family members in the ancillary activities to the fishing, like cleaning and storing fish along with marketing. Dineshbabu et al (2020) argue that the rising temperature of the Bay of Bengal has increased frequencies and severities of algal blooms and, consequent, poisoning of fish stocks. Mujumdar et al (2020) evidence that continuing climate shocks, along with deteriorating marine ecosystems, have led to severe decreases in fisheries productivity in the Coastal India.…”

Section: Deskilling Among Skilled Women Of Villages Along the Bay Of ...mentioning

confidence: 99%

Commentary: Climate Adaptation Interventions in Coastal Areas: A Rapid Review of Social and Gender Dimensions

Gangopadhyay¹,

Suwandaru²,

Das³

et al. 2022

Front. Clim.

View full text Add to dashboard Cite

“…Based on the geographical characteristics and climatic variability, the coastline of India is divided into four zones viz., north-west (NW), south-west (SW), north-east (NE) and south-east (SE) regions (Vivekanandan, 2011). M. monoceros is distributed in all the four climatic zones and studies on climate change related species vulnerability have proved that the species is highly vulnerable in SW, SE, NE zones due to its life history traits and its response to trawling pressure (Dineshbabu et al, 2020). The present study was carried out to understand fishing ground-based stock status of the species, so that region-specific management plans can be derived to sustain this economically important fishery resource.…”

Section: Introductionmentioning

confidence: 99%

Population dynamics of the geographically defined metapopulations of brown shrimp Metapenaeus monoceros (Fabricius, 1798) from Indian waters

et al. 2022

View full text Add to dashboard Cite

Population dynamics of the brown shrimp Metapenaeus monoceros (Fabricius, 1798) was studied along the Indian coast using catch and effort data of trawlers from 8 States and 2 Union Territories for the period 2007-2015. Classical length-based stock assessment methods and spatial database of the shrimp catch were used to derive fishing ground related conclusions. Inclusion of spatial data revealed the possibility of existence of metapopulations of M. monoceros in the region. Maximum sustainable yield (MSY) cannot be a reasonable reference point for deciding the fishing pressure in M. monoceros. By analysing stock fluctuations noticed during the study period with varying spawning stock biomass combinations, retention of 40% spawning biomass seems to be a safe option for sustaining M. monoceros production from Indian waters. Based on this, the study recommends reduction of fishing pressure along north-west, south-west and northeast coast by 70, 60 and 70% respectively from the base level of effort in 2017. The study illustrates that the spatial data from fishing ground, can serve as an additional tool to derive management options. The study also emphasises the need for further investigations on the possibilities of metapopulations of M. monoceros which is widely distributed in all agro-climatic zones along the Indian coast. Keywords: Indian coast, Metapopulation, M. monoceros, Spatial study, Stock assessment

show abstract

Assessment of stock vulnerability of Indian marine fishes to past changes in climate and options for adaptation

Cited by 14 publications

References 31 publications

Resolved and Redeemed: A New Fleck to the Evolutionary Divergence in the Genus Scomberomorus Lacepède, 1801 (Scombridae) With Cryptic Speciation

Resolved and Redeemed: A New Fleck to the Evolutionary Divergence in the Genus Scomberomorus Lacepède, 1801 (Scombridae) With Cryptic Speciation

Commentary: Climate Adaptation Interventions in Coastal Areas: A Rapid Review of Social and Gender Dimensions

Population dynamics of the geographically defined metapopulations of brown shrimp Metapenaeus monoceros (Fabricius, 1798) from Indian waters

Contact Info

Product

Resources

About