Studies on the population biology of Mirogobius lacustris herre

Date

3-1985

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Zenaida Batac Catalan

Abstract

Some studies on the population biology of Microgobius locustris Herre ("dulong") were conducted and described in the present work. Fresh samples procured from the landed catch from Laguna de Bay, for a one year period, March,1934 to February, 1985, showed that the females are mature at a minimum length and weight of 14.52 mm and 0.03 g respectively. It reaches it maximum size at 19.56 mm and 0.12 g. Die mini-mum length and weight of sexually mature male were 12.37 mm and 0.07 g, respectively reaching its maximum size at 18.81 mm and 0.11 g. the average monthly increment of the fish is approximately 1 mm and it appears to mature during the end of its first year of life. Computation of the regression equation for all monthly samples indicated positive linear relationship between length and weight. It was found that the length-weight relationship for the species is significantly different from 3. The relative condition obtained for each individual suggested that the fish becomes bulkier or heavier in substance or both as it grows longer. De sex ratio was 2 : 1 (female : male).

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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