Sexuality in the Garden: Insects, Nature’s Pimps

Monday, August 15th, 2011

Nowadays, sex is easy to come by. A meal bought, a bottle of wine consumed and hot botanist later, you’ll find yourself blissfully falling asleep and satiated. (You can go here, here or here.) But for most plant life, sex is a bit trickier. Imagine being firmly rooted, seeing a potential mate, feeling the urge and not being able to reach out and say, “Hey, are you from Tennessee? Cause your the only ten I see!”.

Devastating, right?

Take for instance a simple Coconut Palm tree (Cocos nucifera), a tree that can grow on a beach, drop it’s fruit, ultimately getting swept away by the tides, and redeposited on another beach thousands of miles away. This coconut (not a botanical nut at all, but a fruit) can germinate and grow on a beach, so far from it’s species with only a washed up bottle of  rum, and the soft, distant melody of steel drums to keep it company.

With such a divide, it’s amazing how these trees pollinate and reproduce. Even self pollinators need some help (by wind, insects, etc.) with getting off, so to speak. However, Nature has that covered by introducing pollinators. Insects such as, honey bees, wasps, moths, flies and beetles – eat and mate within flowers, collecting pollen on their bodies, and transferring that pollen to other plants. Arguably, these pollinators act as the most successful Pimps, in the history of “Pimpdom“. Not only are the plants getting what they need – hot, nasty, throw-me-down pollination – but the insects are benefiting immensely as well. In the form of money – one might conclude. A safe place to hide in, eat from, and mate among is damn fine payment for a little exchange of plant jiz.

Although it may seem like the insect is doing all the “dirty” work, some flowers can aid the pimping process along, quite ingeniously. Take, for instance, the Yucca flaccida plant, which has evolved to attract the Tegeticula yuccasella moth. The yucca provides food for the moth’s larvae, and in exchange, the female moths pollinate. First gathering up to a dozen pollinia within the yucca flower and forming them into a golden mass with her prehensile palpi. When ready, she crawls into the flower and positions herself in such a way that her egg deposit into the flowers ovary wall (between the carpels). A single, slender egg is inserted into the flower’s ovule chamber. After laying, she takes the pollinia and draws them back and forth over the stigma, pressing pollen into the central stigmatic depression. This insures pollination of the flower in which she has deposited an egg. Germinating pollen grains send up to hundreds of sperm-bearing pollen tubes into the ovary, resulting in the fertilization of hundreds of ovules (immature seeds) inside, some of which provide food for the hungry moth larva. Sex had. Moth paid. Transaction completed.

In conclusion, in the words of the late, great Notorious B.I.G., “Pimpin’ ain’t easy, but it sure is fun!”.

 

A few of the BAPP’s crew have come together for a united post! For more fantastic plant/sex posts, check out – Derek‘s, Katie‘s and Rob‘s.

the buzz on bee’s wings

Tuesday, June 28th, 2011

I took this picture in a client’s garden a few weeks ago, and found myself instantly enamored with the detail in the bee’s wings. Constantly carrying a camera on me, paired with constantly being amongst dirt and the like, tends to make for great pictures. This bee picture being one of them, as it quickly became my muse on the subject of bee’s wings.

The Western or European honey bee (Apis mellifera) have two pairs of wings, the fore wing being larger and the hind being the smaller of the two. Each wing is flat, thin, membranous and strengthened by various veins. The wings have 8 sets of muscles that move these wings in the precise way necessary for flight. A honey bee’s wings are arranged in two pairs that are coupled together by a row of hooks on the hind wing that grip in a groove that exists on the rear edge of the fore wing. As the wings unfold for flight the hooks automatically fall into the groove and lock the two wings into a single aerofoil surface. Although the wings are coupled they are still relatively flexible due to a chemical that moves through the hollow veins. This traveling chemical allows for the wings to bend considerably while in flight.

However, just flapping the wings does not result in flight. The driving force results from a propeller-like twist given to each wing during the upstroke and the down-stroke. Slight variations in the actual angles of the wings determine whether the bee hovers, moves forwards or turns. When bees need to compensate for heavier cargo, they don’t flap their wings faster – they stretch out their wing stroke amplitude. This way of compensation, has spurred much research for model designs for aircrafts that hover in place, and can carry loads for disaster relief efforts.

Honey bees have an incredibly rapid wing beat. The fruit fly (that is 1/8th the size) flaps it’s wings 200 times each second – the much larger honey bee flaps 230 times per second (this is just for hovering – not transporting pollen, etc.). As an insect gets smaller, their aerodynamic performance decreases and to compensate they tend to flaps their wings faster. A honey bee can fly for up to six miles in one flight, and as fast as 15 miles per hour.

Bees buzz by generating rapid wing-beats that create wind vibrations, which people hear as buzzing. The larger the bee, the slower the wing beat, and lower the buzzing. Other bees, such as bumblebees, are capable of vibrating their wing muscles and thorax (one form of buzzing) while visiting flowers – this helps shake pollen off flowers for easier collection. Honey bees are incapable of this kind of pollen collection, thus quiet while foraging. Bees use their wings for flight, as well as thermoregulation, hive communication, and pollen harvest/collection.

Interesting, no?

Emergence

Monday, February 7th, 2011

I understand it’s cold and snowing elsewhere in the world. But here, in Half Moon Bay, CA – it’s almost 70 degrees.

In tribute to this fabulous weather that is inspiring emergence in my garden, here are some lovely emergence related links.

Take a moment to indulge:

Emergence

emergence

Emergence

emergence

Emergence

BFF with Honey Bees!

Saturday, May 29th, 2010

It’s been long standing that I am besties with honey bees. This is unlike my sister some people who freak the fuck out when ever honey bees buzz around. So, in an effort to over come any fear you may have with our flying farmers, here are a few tips on how to help save the bees:

1. Don’t freak the fuck out Embrace the Bees!

Bees truly don’t want to bother you, in fact, they don’t even want to be around you! If encountered by a bee, let it do it’s thing and they will fly away.

2. Plant More Flowers!

Well, duh! That’s an easy one! But really… if you have an unruly part of your garden that you have no clue what to do with, broadcast some wildflower seeds for the bees.

3. Leave More Flowers…

It’s hard for me not to dead-head right away, but it really does help to let your flowers fully bloom out before cutting them off. That way the bees get a few more days of pollen… which can lead to pounds and pounds of extra honey.