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Gonadal Development And Sexual Dimorphism Of Gobiomorus Dormitor From The Estuarine System Of Tecolutla, Veracruz, Mexico, Raquel Hernandez-Saavedra, Jose Antonio Martinez-Perez, Nancy J. Brown-Peterson, Mark S. Peterson
Gonadal Development And Sexual Dimorphism Of Gobiomorus Dormitor From The Estuarine System Of Tecolutla, Veracruz, Mexico, Raquel Hernandez-Saavedra, Jose Antonio Martinez-Perez, Nancy J. Brown-Peterson, Mark S. Peterson
Gulf and Caribbean Research
The bigmouth sleeper, Gobiomorus dormitor, is a benthic, euryhaline species, and is very abundant in river mouths, coastal lagoons, and sites away from marine influence from south Florida to Dutch Guyana. There are few studies of its life history, ecology, and abundance, particularly within Mexican waters. Nine trips to Tecolutla estuary, Veracruz, Mexico, were taken between October 1995 and May 1998 to estimate the gonadal development and sexual dimorphism of G. dormitor. A total of 94 individuals ranging from 15–260 mm SL and 0.05–181 g were captured. Seventy-two specimens were adults (60 females, 12 males) and 22 were …
Feeding Habits And Sexual Dimorphism Of The Violet Goby, Gobioides Broussoneti Lacepede (Pisces: Gobiidae), In The Estuarine System Of Tecolutla, Veracruz, Mexico, Sergio Mata-Cortes, Jose Antonio Martinez-Perez, Mark S. Peterson
Feeding Habits And Sexual Dimorphism Of The Violet Goby, Gobioides Broussoneti Lacepede (Pisces: Gobiidae), In The Estuarine System Of Tecolutla, Veracruz, Mexico, Sergio Mata-Cortes, Jose Antonio Martinez-Perez, Mark S. Peterson
Gulf and Caribbean Research
Gobioides broussoneti were sampled in Silveña estuary, a branch of the Tecolutla estuary, Veracruz, Mexico, during 2 trips made between February 1998 and June 1999 to evaluate diet and sexual dimorphism. A total of 65 G. broussoneti ranging from 49–401 mm SL (0.7–124.2 g WW) were collected. There was a 1:1.2 sex ratio in favor of females. Seven food types were noted, with filamentous algae (25.4%) and detritus (21.3%) representing the principal food types. A 24 h feeding study revealed that this species feeds continuously throughout the day. The ovaries of all female G. broussoneti contained previtellogenic oocytes, characteristic of …