Early development of pearlside Maurolicus stehmanni off south‐eastern Brazil

Autor:	Marcelo Rodrigues-Ribeiro, Kazuko Suzuki, Rodrigo Silvestre Martins
Rok vydání:	2022
Předmět:	Larva Mesopelagic zone fungi Fishes Photophore Zoology Maurolicus Aquatic Science Biology biology.organism_classification Habitat Animal Fins Animals Ecosystem Allometry Snout Brazil Ecology Evolution Behavior and Systematics
Zdroj:	Journal of Fish Biology. 100:519-531
ISSN:	1095-8649 0022-1112
Popis:	The pearlside Maurolicus stehmanni is one of the most abundant mesopelagic fishes off southeastern Brazil and plays a key role in the regional ecosystem. However, its early life history remains poorly understood. This study examined the M. stehmanni early life stages, from eggs to juveniles, including all developmental changes in external morphology. Larvae are simple in morphology and lack specialised larval structures. Notochord flexion begins at ~ 5.15 mm BL and larvae ≥ 5.95 mm BL are flexed. The relative growth of seven measured larval characters (head length, body depth, snout length, eye diameter, pre-dorsal length, pre-ventral length, and pre-anal length) have transition points (allometric inflexion points), indicating biphasic growth patterns which are likely related to shifts in habitat use, feeding, and behaviour. Larval development is similar to that of other Maurolicus species. The relatively fast development of the fins, photophores, swimbladder, and pigmentation suggests a precocious adoption of a micronektonic lifestyle in the mesopelagic environment. This article is protected by copyright. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::935a1295c5d1950e7159179a7f5e7fa4 https://doi.org/10.1111/jfb.14962 Zobrazit plný text záznamu Plný text