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Title: Morphological identification and occurrence of engraulid eggs off Gulf of Mannar, South east coast of India
Authors: Saroj, J
Jawahar, P
Srinivasan, A
Neethiselvan, N
Jayakumar, N
Keywords: Abundance;Eggs;Engraulidae;Gulf of Mannar;Taxonomy
Issue Date: Sep-2020
Publisher: NISCAIR-CSIR, India
Abstract: Sampling of eggs of species of family Engraulidae was investigated at three stations in the nearshore waters of Gulf of Mannar, for the period of January 2018 to December 2018. During sampling, the quantities and distributions of eggs of engraulids were determined. Horizontal tow was conducted from the surface (0-5 m), a plankton net of 45 cm in diameter and 150 μm mesh. The eggs of engraulids sampled in plankton tows were found to be 542.92 ind./100 m3. A total of 1,075 eggs belonging to 8 species were identified during the sampling period. Eggs of Encrasicholina heteroloba, E. punctifer, Setipinna taty, Stolephorus baganensis, S. tri, Thryssa hamiltonii, T. dussumieri and T. mystax were identified. Engraulid eggs were found throughout the year in the nearshore waters of Punnakayal and Thoothukudi, but they were much abundant during the summer season. A significant positive correlation was found between environmental factors and the occurrence of eggs at Thoothukudi and Punnakayal stations. Thus Punnakayal region of Gulf of Mannar is identified as the spawning ground for the engraulid fishes.
Page(s): 1565-1570
ISSN: 2582-6727 (Online); 2582-6506 (Print)
Appears in Collections:IJMS Vol.49(09) [September 2020]

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