The reproductive cycle and its control; frequency of spawning and fecundity in Blennius pholis L.

Shackley, S. E.; King, P. E.

doi:10.1016/0022-0981(77)90028-4

Cited by 24 publications

(40 citation statements)

References 7 publications

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“…Rearing temperature was 15 °C throughout, and since the fish were exposed to natural daylight, but not natural temperature conditions, the light regime must have been the stimulus for oviposition, as found for B1ennius pholls by Shackley & King (1977}. Some of the males, however, appeared to be always in reproductive mood, since different males displayed nuptial coloration throughout the year. The extension of the spawning period might have been due to the relatively low water temperature of 15 °C, which is probably below the optimum rearing temperature for the species, but it provides the investigator with egg and larval material almost continuously throughout the year.…”

Section: Discussionmentioning

confidence: 99%

Observations on the reproductive and larval biology ofBlennius pavo (Pisces: Teleostei)

Westernhagen

1983

Helgolander Meeresunters

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Social behaviour and spawning of adult Blennius pavo kept in the laboratory are described. Eggs are deposited in batches on the walls of artificial spawning places (PVC pipes). One male guards and tends the eggs of different females in one spawning place. Larval hatching occurs in groups according to oviposition. Minimum incubation temperature is around 14-15 °C. Larval survival in 1-1 rearing jars is not related to larval total length but to density of larval stock. An experimental population of laboratory reared juvenile and adolescent B. pavo displays a male to female ratio of 1:1.4. Factors possibly influencing the sex ratio of this littoral fish are discussed in view of the situation in its natural environment.

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Section: Discussionmentioning

confidence: 99%

Observations on the reproductive and larval biology ofBlennius pavo (Pisces: Teleostei)

Westernhagen

1983

Helgolander Meeresunters

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“…Many papers have been published concerning its reproductive biology and ecology (e.g. Qasim, 1956Qasim, , 1957Dunne, 1977;Shackley and King, 1977;Laming et al, 1982;Milton, 1983;Almada et al, 1990aAlmada et al, , 1990bAlmada et al, , 1992Faria et al, 1996;Gonçalves, 1997).…”

Section: Introductionmentioning

confidence: 99%

Embryonic and larval development of <i>Lipophrys pholis</i> (Pisces: Blenniidae)

Faria¹,

Borges²,

Gil³

et al. 2002

Sci. Mar.

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SUMMARY: Information on the early ontogeny of Lipophrys pholis is scattered and incomplete. In this paper we describe for the first time the full developmental sequence from egg to juvenile in controlled conditions. In addition, some notes on the spawning behaviour of adults and the behaviour of larvae are provided. During oviposition, the female follows the male's path, suggesting that the male may apply sperm on the nest before spawning. Embryonic development lasted 16 days (17ºC) and larval development to settlement lasted 29 days (15.5-17.5ºC). At hatching, mean larval total length was 5.0 mm. The larvae hatched with the mouth and anus opened, with pigmented eyes and almost no yolk, and started to feed within one day. They first settled 29 days after hatching (13-14 mm TL) and showed full juvenile pigmentation and behaviour 8 to 9 days later (17-19 mm TL).

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“…Although the morphology (Ford 1922, Bath 1976, Arruda 1979, Laming et al 1982, ecology and behaviour (Lebour 1927, Qasim 1956, 1957, Gibson 1967a,b, 1982, 1999, Dunne 1977, Shackley and King 1977, Milton 1983, Zander 1986, 1999, Almada et al 1990a,b, 1992, Faria et al 1996, 2002, Faria and Almada 1999 and diet (Gibson 1972, Mazé et al 1999, Monteiro et al 2005 of L. pholis are well characterized, only scattered and incomplete information exists on female gonadal development and maturation (Lebour 1927, Qasim 1956, 1957, Shackley and King 1977, Fives 1986). Data on gonad development is of prime importance because many contaminants interfere with reproductive pathways, affecting fertility parameters, causing dysfunction of sexual development (intersex), and altering sex ratio (Jobling et al 1998, Schmitt et al 2005.…”

Section: Introductionmentioning

confidence: 99%

“…Staging based on the appearance of whole oocytes can also be useful, though oocytes in transitional stages of development are a potential source of uncertainty (Qasim 1957). Sizing oocytes may also be used to measure development (Shackley and King 1977) but little information is given on the physiological status of the ovaries. Therefore, histological studies, although time consuming, appear to be one of the most reliable and objective sources of information on the determination of spawning cycles.…”

Section: Introductionmentioning

confidence: 99%

“…Data on gonad development is of prime importance because many contaminants interfere with reproductive pathways, affecting fertility parameters, causing dysfunction of sexual development (intersex), and altering sex ratio (Jobling et al 1998, Schmitt et al 2005. Although there are several methods for staging gonadal development, some are based on the external visual examination of the ovary (Qasim 1956, Shackley andKing 1977), which, though simple and rapid, involves a high level of subjectivity that can lead to inaccurate results. Staging based on the appearance of whole oocytes can also be useful, though oocytes in transitional stages of development are a potential source of uncertainty (Qasim 1957).…”

Section: Introductionmentioning

confidence: 99%

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The annual cycle of oogenesis in the shanny, <i>Lipophrys pholis</i> (Pisces: Blenniidae)

Ferreira¹,

Santos²,

Reis-Henriques³

et al. 2012

Sci. Mar.

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SUMMARY:Lipophrys pholis has been shown to be responsive to a variety of environmental contaminants, some of them able to impair reproduction. Description of the normal cycle of oogenesis of this newly proposed sentinel species is important since this data may function as a baseline for comparison in ecotoxicological studies, among other applications. Based on histological observations, L. pholis ovarian development in adult is asynchronous, and 7 ovarian germ cells can be described (oogonia, early and late perinuclear oocytes, cortical-alveolar oocytes, early vitellogenic oocytes, vitellogenic oocytes and spawning oocytes). Using a stereological approach together with the morphologic characteristics of ovarian cells, the ovarian cycle of L. pholis was divided into 3 maturation stages: early oogenesis (May); mid-oogenesis (September), and spawning (November to January). Ovarian cell proportions and gonadosomatic index confirmed that the reproductive period of L. pholis near the southern limit of distribution of the species occurs during cold-water periods, between November and May. The collected data will help to fill some of the gaps in information that still exist on L. pholis oogenesis, thus allowing a better integration of this species as a sentinel for the detection of contaminants in European coastal waters.Keywords: Lipophrys pholis, sentinel species, intertidal, oogenesis, gonadal development. RESUMEN: Ciclo anual de oogénesis en Lipophrys phoLis (Pisces: Blenniidae). -En trabajos recientes, se ha visto que Lipophrys polis es sensible a diversos contaminantes medioambientales, algunos de los cuales pueden afectar a la reproducción. La descripción del ciclo normal de oogénesis de esta nueva propuesta de especie centinela es importante, ya que serviría como referencia para futuros estudios toxicológicos, entre otras aplicaciones. En base a observaciones histológicas, se pueden describir siete estados de los oocitos (oogonia, estado perinuclear temprano y tardío, estado cortico-alveolar, vitelogénesis temprana, vitelogénesis y oocitos desovados). Desde un enfoque estereológico, junto con las características morfológicas de las células ováricas, el ciclo ovárico de L. polis se ha dividido en tres estados de maduración: oogénesis temprana (mayo), oogénesis media (septiembre) y desove (de noviembre a enero). Las proporciones de las células ováricas y el índice gonadosomático, confirmaron que el periodo reproductivo de L. polis, en el límite meridional de distribución de la especie, se produce durante los periodos de agua fría, entre noviembre y mayo. Los datos obtenidos ayudarán a cubrir algunas de las lagunas que todavía existen en el conocimiento de la ovogénesis de L. pholis, permitiendo, por tanto, una mejor integración de esta especie como centinela para la detección de contaminantes en las aguas costeras europeas.

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The reproductive cycle and its control; frequency of spawning and fecundity in Blennius pholis L.

Cited by 24 publications

References 7 publications

Observations on the reproductive and larval biology ofBlennius pavo (Pisces: Teleostei)

Observations on the reproductive and larval biology ofBlennius pavo (Pisces: Teleostei)

Embryonic and larval development of <i>Lipophrys pholis</i> (Pisces: Blenniidae)

The annual cycle of oogenesis in the shanny, <i>Lipophrys pholis</i> (Pisces: Blenniidae)

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