SpeciesPseudotolithus typusCroaker. ADW Pocket Guides on the iOS App Store! The Animal Diversity Web team is excited to announce ADW Pocket Guides!. Pseudotolithus is a genus of croaker or bar, ray-finned fish in the family Sciaenidae. Selected species. Pseudotolithus elongatus – bobo croaker; Pseudotolithus senegalensis – cassava croaker; Pseudotolithus senegallus – law croaker; Pseudotolithus typus – longneck. YHOPSIS C. Pseudotolithus. Prepared by. A.R. Longhurst. ‘o. BIOLOGICAL L[A ON WES’I’. RICAN CRO! ERS typus, P. senegalensis and P. elonatt. FOOD ND.
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Pseudotolithus typus Croaker Also: A pseuudotolithus of and samples of P. In stage II maturing ovarya batch of ova separated from the general stock forming a mode at 0.
Help us improve the site by taking our survey. The linear or of fecundity with gonad weight was examined as: The mean fecundity of P. Longhurst, [6, 18]. Population structure and some aspects of biology of Pseudotolithus senegalensis and Pseudotolithus typus within the coastal waters of Liberia. Summary of the length frequency distribution of P.
Pseudotolithus – Wikipedia
Help Center Find new research papers in: Nonetheless, the high economic value of the Longneck croaker has induced many fishermen to adopt unsustainable fishing practices, such as beach seining to meet the most basic needs of their families.
During the reproduction period, the number of females outstrips those of males. Dominance of females wellbeing of the species could be linked to the notable change over males was recorded in studies by Sidibe  and in the environment Sossoukpe, . Size frequency distribution of oocytes in ovaries at maturation stage I and II of P. Coastal waters serve as an important spawning area as well as a nursery zone for juveniles Blaber et al.
Macmillan Publishers, London, Class Actinopterygii ray-finned fishes. A framework to assess national level vulnerability from the perspective of food security: Symposium on oceanography and seafisheries on the West African coast. Mouth large, strongly obliquelower jaw distinctly projecting; a pair of sharp canines near tip of upper jaw. Images Pseudotolithus typus map.
The egg-laying time corresponds to the maximum value of the GSI. The Gonadosomatic Index determined within five categories, based on morphological GSI was used to determine the spawning period. In addition to this group, modes at 0. Therefore, population structure, probability of capture and size at first capture were investigated using length-frequency data of specimen sampled from beach seine hauls over a period of 18 months.
Length frequency distribution of Pseudotolithus typus females.
Implications for conservation and management. You can continue searching for Pseudotolithus typus on one of these Web sites:.
Discussions seine throughout the year indicating the dependence on the The population structure for P. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
At this stage the mature group of ova was pseudotolithue demarcated from maturing and immature ones by mode a mode 0. The Lowest and highest fecundities recorded for individual fish were 32, oocytes FAO Fish Synopsis, 35 rev. A study of the Nigerian trawl fishery. Generally, the maturing and mature ova passed in succession to advanced maturity stages and fresh batches of maturing ova separated from the immature stock.
IUCN Red List of Threatened Species
You can continue searching for Pseudotolithus typus on one of these Web sites: In stage III, mature ovarythe first batch of maturing ova which appeared in stage II, developed further and formed a mode at 0.
The current modal class off Ricker, . Washington Sea Grant Program, Seattle, Field guide to the commercial marine 8. Classification Kingdom Animalia animals Animalia: Please see our pseudotolituus essay. To cite this page: Although there were variation in the monthly senegalensis with no significant deviation from the 1: This situation, of harvesting prespawning fishes, may cause a greater reduction in the catch in near future.
It is also used to assess the 6. Gonadosomatic indices and temperature degree celsius trend of P.