This study was carried out during May 2010 – April 2011 in order to determine various biological properties of red mullet occurring in the Eastern Black Sea region. The average length and weight of 1435 specimens were determined as 13.13 cm and 23.14 g, respectively. Weight-length relationship was determined as W = 0.0088 L3.0338. The age distribution of this population ranged between I and VII...

Summary The decreasing trends in fertility rates in many industrialized countries are now so dramatic that they deserve much more scientific attention. Although social and behavioural factors undoubtedly play a major role for these trends, it seems premature, and not based on solid information, to conclude that these trends can be ascribed to social and behavioural changes alone. There is evide...

The fecundity of Liza parsia (Hamilton) was estimated studying 80 gravid females collected from the local markets in Khulna during November 2007 to January 2008. ranged 37,675 (total length 15.5 cm, body weight 39.791 g and ovary 3.532 g) 1,87,442 21.8 118.8 18.421 g). mean calculated be 91269.29±35501.09. 8.657±3.458 while that left right lobes were 4.467±1.823 4.192±1.667 respectively. diamet...

(Abstracted from Hum Reprod 2021;36:2309–2320) Time to pregnancy (TTP), defined as the interval of time between a couple beginning practice unprotected intercourse and conception, is measure fecundity, which an individual's biologic capacity reproduce. Fecundity has reportedly decreased over recent decades for unknown reasons that may include lifestyle, behavioral, environmental factors.

We tested the hypothesis that mild winter temperatures are detrimental to the survival and reproductive potential of insects. We measured survival, body size, and potential fecundity of a freeze tolerant insect, the goldenrod gall fly (Eurosta solidaginis), after overwintering in the laboratory for ~3 mo. frozen at -22 degrees C, unfrozen at 0 degrees C, or unfrozen at 12 degrees C. Larvae held...

Longevity, duration of the oviposition period, realized fecundity, potential fecundity, and egg fertility of the beet armyworm, Spodoptera exigua (Hübner), were examined in the laboratory under three different adult diet regimes. All parameters were signiÞcantly reduced for the water-only diet compared with 10% honey or sucrose diets, except fertility, which could not be measured after 5 d beca...

Fecundity of guchibaim, Mastacembelus pancalus was described based on 100 samples collected from the experimental ponds of the Field Laboratory Complex, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh during the period from May to July 2007. The surveyed sample ranged from 115 to165mm in total length and 6.97±0.44 to 10.52±0.22g in average body weight. The ovary weight of t...