NDLI: Larval abundance, growth, and recruitment of japanese spanish mackerel scomberomorus niphonius.

Please wait, while we are loading the content...

Larval abundance, growth, and recruitment of japanese spanish mackerel scomberomorus niphonius.

Content Provider	CiteSeerX
Author	Shoji, Jun Tanaka, Masaru
Abstract	We examined the relationships among larval and juvenile abundance and catch per unit fishing effort (CPUE) of subsequent 1-year-old Japanese Spanish mackerel in the central Seto Inland Sea, Japan, from 1995 to 1999 to test the hypothesis that year-class strength of the mackerel is determined by the juvenile stage. There was no significant correlation between larval and juvenile abundance while juvenile abundance was positively correlated with CPUE of subsequent 1-year-old fish, indicating that year-class strength was determined by early juvenile stage. Mean larval growth rate estimated by otolith microstructure ranged between 0.43 and 0.92 mm day-1.There was a significant positive correlation between prey fish (clupeiform larvae) abundance and mean growth rate of the mackerel larvae. The fish prey abundance during peak occurrence period of the mackerel larvae was higher in 1995 and 1999 than in the other three years. The larval growth rates were significantly higher and strong year-class occurred in 1995 and 1999. The larval abundance was highest, but the juvenile abundance was lowest in 1997, indicating higher mortality during larval period in this year. We concluded that fish prey availability is one of the most important determinants for growth and survival of Japanese Spanish mackerel larvae, which are almost completely piscivorous from their first feeding stage.
File Format	PDF
Access Restriction	Open
Subject Keyword	Larval Abundance Juvenile Abundance Japanese Spanish Mackerel Scomberomorus Niphonius Mackerel Larva Year-class Strength Larval Growth Rate Mm Day-1 Early Juvenile Stage Significant Correlation Subsequent 1-year-old Fish Central Seto Inland Sea Larval Period First Feeding Stage Japanese Spanish Mackerel Larva Peak Occurrence Period Juvenile Stage Mean Growth Rate Fish Prey Availability Fish Prey Abundance Strong Year-class Prey Fish Mean Larval Growth Rate Significant Positive Correlation Subsequent 1-year-old Japanese Spanish Mackerel Important Determinant Otolith Microstructure Unit Fishing Effort
Content Type	Text

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in